CN120569590A - Method for operating a tank device for storing a gaseous fuel and tank device for storing a gaseous fuel - Google Patents
Method for operating a tank device for storing a gaseous fuel and tank device for storing a gaseous fuelInfo
- Publication number
- CN120569590A CN120569590A CN202380091872.0A CN202380091872A CN120569590A CN 120569590 A CN120569590 A CN 120569590A CN 202380091872 A CN202380091872 A CN 202380091872A CN 120569590 A CN120569590 A CN 120569590A
- Authority
- CN
- China
- Prior art keywords
- tank
- tbn
- valve device
- container
- determined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- 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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
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- 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
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- 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
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention relates to a method for operating a tank device (1) for storing a gaseous fuel for a motor vehicle, wherein the tank device (1) comprises a plurality of tank containers (TB 1, TB2, & gt, TBn) and at least one valve device (2). The invention also relates to a tank device (1) for storing gaseous fuel for a motor vehicle (F), comprising a plurality of tank containers (TB 1, TB2,..once., TBn) and at least one valve device (2) on the tank containers.
Description
Technical Field
The invention relates to a method for operating a tank device for storing gaseous fuel and to a tank device for storing gaseous fuel.
Background
Safety devices and/or valves may be installed in known pressure reservoirs. Fuel cell systems having a tank arrangement or tank for a gaseous medium are known for this purpose. In order to stabilize the pressure tank and prevent or at least mitigate the outflow of gas when the temperature of the storage medium increases or when there is a leak, the pressure tank may be equipped with a valve, for example. It is desirable here, however, to obtain a better understanding of the tank level of the tank in order to better operate the motor vehicle and its fuel supply in the operating state.
In an H 2 tank system, which typically has a plurality of gas tanks each equipped with a respective tank valve, it is not necessary that all tanks be equipped with respective pressure sensors. It is desirable to find tank levels in the tank and the plurality of tanks after pressure equalization is achieved.
In DE11 2006 003 013b4 a tank with a tap and a valve is disclosed, wherein the valve is fixed in the tap.
Disclosure of Invention
The invention provides a method for operating a tank device for storing gaseous fuel according to claim 1 and a tank device for storing gaseous fuel according to claim 7.
Preferred further developments are the subject matter of the dependent claims.
The invention is based on the idea of providing a method for operating a tank device for storing gaseous fuel and a tank device for storing gaseous fuel, wherein an open safety valve or a leak on the tank device can be better detected.
According to the invention, in a method for operating a tank system for storing gaseous fuel, the respective tank level in the respective tank vessel and the average tank level of the entire tank system are determined from the temperature determined for the respective tank vessel and the determined tank pressure at predetermined points in time, the difference between the tank level of the respective tank vessel determined and stored at the predetermined points in time and the average tank level of the entire tank system, which was determined last from the end of the previous operation, and the stored average tank level of the entire tank system before closing the respective valve device is determined, the respective determined difference is compared with a respective predetermined threshold value, and if the difference exceeds the predetermined threshold value, the presence of a leak is inferred.
The entire tank arrangement may be all tank containers and the entire piping system. The predetermined threshold may correspond to a threshold allowed for a particular operation.
The average tank level of the entire tank system can be determined from the tank levels of all tank containers (the tank levels are averaged taking into account the individual tank volumes) or additionally the volume of the pipe system can be taken into account in addition to the tank levels of all tank containers in the averaging process, said volume being known to the manufacturer.
The tank arrangement comprises a plurality of tank containers, at least one valve device connecting the respective tank container with the gas line system, wherein the at least one valve device is connected with the respective tank container, wherein each valve device is provided for letting in and/or letting out gaseous fuel into and/or out of the respective tank container and/or letting out the tank contents of the respective tank container in the direction of the gas line system, at least one high-pressure sensor in the gas line system, at least one temperature sensor in each tank container, and a control device connected with the temperature sensor, with the high-pressure sensor and the valve device.
According to a preferred embodiment of the method, the tank pressure is determined for each tank container by means of a pressure sensor on the respective tank container at a predetermined point in time before the respective valve device is opened.
According to a preferred embodiment of the method, the tank pressure is determined for the individual tank containers by means of a pressure sensor in the gas line system in such a way that the measured line pressure is assumed to be a uniform pressure for the individual tank containers at a predetermined point in time, wherein the predetermined point in time lies in a time interval after the individual valve devices have been opened directly up to the maximum time requirement expected for the pressure equalization of the individual tank containers.
According to a preferred embodiment of the method, the threshold value for the difference between the determined and stored tank levels is related individually and/or entirely to the time after opening the valve device.
According to a preferred embodiment of the method, the threshold value for the difference between the determined and stored tank levels is related individually and/or in total to the difference in the respective temperature change of the respective tank container since the point in time at which the respective valve device was closed at run-time before the end.
According to a preferred embodiment of the method, the threshold value for the difference between the determined and stored tank levels is related solely and/or entirely to the mass of fuel taken through the consumption system since the opening of the corresponding valve device.
According to the invention, a tank arrangement for storing gaseous fuel for a motor vehicle comprises a plurality of tank containers, at least one valve device on the tank containers, which connects the tank containers with a gas line system, wherein the at least one valve device is connected with the respective tank container, wherein the valve device is provided for bringing gaseous fuel into and/or out of the respective tank container and/or separating the tank contents of the respective tank container in the direction of the gas line system, at least one high-pressure sensor in the gas line system, at least one temperature sensor in each tank container, and a control device, which is connected with the temperature sensor, with the high-pressure sensor and the valve device and is provided for carrying out the method according to the invention.
According to a preferred embodiment of the tank arrangement, a plurality of tank containers are connected to the same gas line.
According to a preferred embodiment of the tank arrangement, the control device is provided as a valve device for opening the tank container when the motor vehicle is started.
The gas conduit may be used to supply gaseous fuel to the tank container and also to transport gas from the tank container to the engine of the motor vehicle or to the fuel cell. The valve device may comprise a closable valve, which may be opened and closed electrically.
The motor vehicle may be a fuel cell motor vehicle. The gaseous fuel may here be a gaseous gas for operating the fuel cell, for example hydrogen or other possible gases for this purpose. On the other hand, the gaseous fuel may also be a gas for a gas-operated motor vehicle, such as CNG or LPG, in which case it may also be liquid gas.
In motor vehicles with fuel cell systems, tank containers filled with gaseous fuel may be present, wherein one or more tank containers may be under high pressure (up to 700bar nominal). During the downtime of a motor vehicle having an H 2 storage system, different pressures may be generated in the various tanks. This is because of different temperature variations in the individual tanks, for example, due to different tank embodiments or different environmental boundary conditions at the tanks, heating or cooling differently. This difference or effect may be considered for each can.
Each tank container may have one or more valve devices, such as a thermally activatable safety valve (TPRD) or shut-off valve. The tank containers may all be connected to a gas line into which the supply line of the respective tank container may lead and which may then lead to the fuel cell. By connection to the supply line and through the gas line, pressure equalization of the tank containers with respect to one another can be achieved in the supply line and the gas line, or tank containers with a lower pressure can be refilled with tank containers with a higher pressure. In the event of a leak, it is possible that a predetermined total discharge pressure can no longer be reached in the gas line, so that it can be inferred that a leak is present on at least one tank vessel connected to the line system.
According to one embodiment, each tank container having a significantly lower pressure (leakage) can be detected individually. The directly measured pressure may be lower than the pressure when the vehicle was parked prior to the vehicle, including accounting for temperature variations.
If not all tank containers are equipped with pressure sensors, in case of a leak on the tank container, the (high pressure) piping system (in the high pressure area) may follow the pressure of the failed tank container by recharging. After actuation of the valve, the defective tank container can be refilled by means of a further tank container. The desired line pressure (caused by all tank containers) and corrected for the desired temperature change cannot be achieved from the end of the previous run (before the standstill state). Too small a pressure gradient (below a threshold value) can be measured in the (high pressure) piping system. It can thus be deduced that a large amount of hydrogen is taken out, which is present on at least one tank container due to leakage or triggering of the TPRD.
The tank device may also be highlighted by combining the features mentioned in connection with the method and its advantages, and vice versa.
Other features and advantages of embodiments of the invention will be apparent from the following description of the embodiments with reference to the accompanying drawings.
Drawings
The invention is explained in more detail below on the basis of an embodiment which is shown in the schematic drawing of the figures.
The drawings show:
FIG. 1 is a schematic illustration of a tank arrangement for storing gaseous fuel for a motor vehicle according to one embodiment of the invention.
In the drawings, like reference numbers indicate identical or functionally identical elements.
Detailed Description
Fig. 1 shows a schematic view of a tank device for storing gaseous fuel for a motor vehicle according to one embodiment of the invention.
Tank arrangement 1 for storing gaseous fuel for a motor vehicle comprises a plurality of tank containers TB1, TB2, TBn, comprising at least one valve device 2 on a tank container, which connects a tank container TB1, TB2, TBn with a gas piping system GL, wherein the at least one valve device 2 is connected with a respective tank container TB1, TB2, TBn, wherein the valve device 2 is arranged for letting gaseous fuel in and/or out of a respective tank container TB1, TB2, TBn and/or for letting the tank contents of a respective tank container TB1, TB2, TBn separate in the direction of the gas piping system GL, further comprising at least one high-pressure sensor in the gas piping system GL, at least one temperature sensor in each tank container and comprising a control device connected with the temperature sensor, with the high-pressure sensor and with the valve device and arranged for carrying out the method according to the invention.
In the method, the respective tank levels in the respective tank containers and the average tank level of the entire tank system are determined from the temperatures determined for the respective tank containers and the determined tank pressures at predetermined points in time, the respective tank levels in the respective tank containers and the average tank level of the entire tank system determined at predetermined points in time are determined as a function of the difference between the last determined and stored tank level of the respective tank container and the stored average tank level of the entire tank system before closing the respective valve devices since the end of the previous operation, the respective determined differences are compared with the respective predetermined threshold values, and if the difference exceeds the predetermined threshold value, the presence of a leak is deduced.
A leak on the tank container or on one of the tank containers may be identified, wherein it may be a leak on a wall of the tank container itself or a leak of the valve device.
Methods for detecting open valves, for example thermally activatable safety valves (abbreviated TPRD) or large leaks, for example in the case of a shut-down state, can be carried out.
Fig. 1 shows a system consisting of a hydrogen storage with a tank device 1 and a fuel cell device BZE.
The plurality of tank containers TB1, TB2, respectively, is symbolically shown here as a tank, which can be connected to a safety valve SV, for example a TPRD, and to a shut-off valve 2. The tank side TS (e.g., toward the filling station) may be connected to the tank TB1,... The shut-off valve can be connected to the fuel cell BZ in the fuel cell system BZE by means of the regulator R, in particular via the gas line GL. The gas line GL may itself have a sensor Si on the high-pressure side, i.e. in the flow direction, upstream of the regulator, wherein on this side of the fuel cell, i.e. downstream of the regulator R, such a pressure sensor and/or a temperature sensor Si may also be present. The fuel cell BZ can be connected to the blower GB and to the exhaust gas region AB. The fuel cell can then supply the energy management system D, for example via the battery Batt, the capacitor or capacitors C, the associated control device D-SE, and can drive the electric motor M.
Although the present invention has been fully described hereinabove according to the preferred embodiments, the present invention is not limited thereto but may be modified in various ways and methods.
Claims (9)
1. Method for operating a tank device (1) for storing gaseous fuel for a motor vehicle, wherein the tank device (1) comprises:
a plurality of canister containers (TB 1, TB2,., TBn);
At least one valve device (2) connecting a respective tank container (TB 1, TB2, TBn) with the gas conduit system (GL), wherein the at least one valve device (2) is connected with the respective tank container (TB 1, TB2, TBn), wherein each valve device (2) is arranged for letting in and/or letting out the gaseous fuel from the respective tank container (TB 1, TB2, TBn) and/or for letting out the tank contents of the respective tank container (TB 1, TB2, TBn) in the direction of the gas conduit system;
At least one high-pressure sensor in the gas line system (GL),
At least one temperature sensor in each tank container, and
A control device connected to the temperature sensor, to the high-pressure sensor and to the valve device (2);
the method comprises the following steps:
-at predetermined points in time, from the temperature determined for the individual tank containers (TB 1, TB2,..once, TBn) and the tank pressure determined, determining the respective tank level in the respective tank container (TB 1, TB2,..once, TBn) and determining the average tank level of the entire tank arrangement;
-determining the difference between the determined tank level in the respective tank container (TB 1, TB2,..once, TBn) at the predetermined point in time and the average tank level of the entire tank arrangement relative to the last determined and stored tank level of the respective tank container since the end of the previous run and the stored average tank level of the entire tank arrangement before closing the respective valve device;
-comparing the respective difference values thus determined with respective predetermined thresholds;
-deducing that a leak is present if the difference exceeds said predetermined threshold.
2. Method according to claim 1, in which method, before opening the respective valve device, the tank pressure is determined for the respective tank container (TB 1, TB2, TBn) at a predetermined point in time by means of a pressure sensor on the respective tank container.
3. Method according to claim 1, in which method the tank pressure is determined for each tank vessel by means of a pressure sensor in the gas line system in such a way that the measured line pressure is assumed to be a uniform pressure for each tank vessel at the predetermined point in time, wherein in this case the predetermined point in time lies within a time interval after the opening of the respective valve device directly up to the maximum time requirement expected for the pressure equalization of the respective tank vessel.
4. A method according to claims 1 and 3, in which method the threshold value for the difference between the determined and stored tank level is related solely and/or entirely to the time after opening the valve device.
5. Method according to claim 4, in which method the threshold value for the difference between the determined and stored tank levels is related individually and/or in total to the difference in the respective temperature change of the respective tank vessel since the point in time at which the respective valve device was closed at run-time before the end.
6. Method according to any of the preceding claims 1 to 5, in which method the threshold value for the difference between the determined and stored tank level is related solely and/or entirely to the mass of fuel taken through the consumer system since opening the respective valve device.
7. Tank device (1) for storing gaseous fuel for a motor vehicle (F), comprising:
a plurality of canister containers (TB 1, TB2,., TBn);
At least one valve device (2) on a tank container, which connects the tank container (TB 1, TB2,..once, TBn) with a gas pipe system (GL), wherein the at least one valve device (2) is connected with the respective tank container (TB 1, TB2,..once, TBn), wherein the valve device (2) is provided for letting in and/or letting out the gaseous fuel to the respective tank container (TB 1, TB2,..once, TBn) and/or for letting out the tank contents of the respective tank container (TB 1, TB2,..once, TBn) in the direction of the gas pipe system;
At least one high-pressure sensor in the gas line system (GL),
At least one temperature sensor in each tank container, and
Control device connected to the temperature sensor, to the high pressure sensor and to the valve device (2) and arranged for performing the method according to any of claims 1 to 6.
8. Tank arrangement (1) according to claim 7, in which the plurality of tank containers (TB 1, TB2, TBn) are connected to the same gas duct (GL).
9. Tank arrangement (1) according to claim 7 or 8, in which the control device is arranged as the valve device (2) for opening the tank container (TB 1, TB2, TBn) after a motor vehicle is started.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023200443.7A DE102023200443A1 (en) | 2023-01-20 | 2023-01-20 | Method for operating a tank device for storing a gas fuel and tank device for storing a gas fuel |
| DE102023200443.7 | 2023-01-20 | ||
| PCT/EP2023/087852 WO2024153446A1 (en) | 2023-01-20 | 2023-12-27 | Method for the operation of a tank unit for storing a gaseous fuel, and tank unit for storing a gaseous fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN120569590A true CN120569590A (en) | 2025-08-29 |
Family
ID=89473251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202380091872.0A Pending CN120569590A (en) | 2023-01-20 | 2023-12-27 | Method for operating a tank device for storing a gaseous fuel and tank device for storing a gaseous fuel |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20250134201A (en) |
| CN (1) | CN120569590A (en) |
| DE (1) | DE102023200443A1 (en) |
| WO (1) | WO2024153446A1 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1205704B1 (en) | 2000-11-08 | 2008-03-26 | GreenField AG | Process for filling a vehicle tank with gas |
| JP4935117B2 (en) | 2005-11-08 | 2012-05-23 | トヨタ自動車株式会社 | tank |
| CN100580305C (en) | 2007-07-12 | 2010-01-13 | 徐焕恩 | Safe and low-consumption intelligent gas supply system for gas storage cylinders |
| DE102011104711A1 (en) * | 2011-06-06 | 2012-12-06 | Zoz Gmbh | Vehicle with several storage tanks for hydrogen and method for displaying the available stock quantity and control for removal |
| DE102014000713A1 (en) * | 2014-01-18 | 2015-07-23 | Daimler Ag | Method for removing high pressure stored gas |
| DE102020113995A1 (en) | 2020-05-26 | 2021-12-02 | Bayerische Motoren Werke Aktiengesellschaft | Control unit and method for setting the pressure in the extraction line of a pressure vessel |
| DE102020123039A1 (en) | 2020-09-03 | 2022-03-03 | Bayerische Motoren Werke Aktiengesellschaft | Method for monitoring a pressure vessel system, pressure vessel system and motor vehicle |
| DE102021116567A1 (en) * | 2021-06-28 | 2022-12-29 | Voith Patent Gmbh | Fuel system for a pressure tank and for a gas-powered vehicle |
-
2023
- 2023-01-20 DE DE102023200443.7A patent/DE102023200443A1/en active Pending
- 2023-12-27 WO PCT/EP2023/087852 patent/WO2024153446A1/en active Pending
- 2023-12-27 KR KR1020257027013A patent/KR20250134201A/en active Pending
- 2023-12-27 CN CN202380091872.0A patent/CN120569590A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024153446A1 (en) | 2024-07-25 |
| KR20250134201A (en) | 2025-09-09 |
| DE102023200443A1 (en) | 2024-07-25 |
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