WO2012038387A1

WO2012038387A1 - Tank filling system

Info

Publication number: WO2012038387A1
Application number: PCT/EP2011/066258
Authority: WO
Inventors: Ingo Brussog; Jens BÖCKERMANN
Original assignee: Siemens Aktiengesellschaft
Priority date: 2010-09-24
Filing date: 2011-09-20
Publication date: 2012-03-29
Also published as: DE102010041326A1

Abstract

The invention relates to a tank filling system (10) comprising a tank inlet (20), a tank filling device (30), and a radio-based data communication device (40), wherein a radio connection is established for transferring data between a first data communication participant (25) and a second data communication participant (30) by means of the radio-based data communication device (40).

Description

description

Refueling System The invention relates to a refueling system, for example for vehicles or even for stationary tanks.

The refueling system is, for example, a tank filling device with a filler neck for connection to a tank inlet of a tank. Such a device is known in ^¬ play, from DE 10 2005 033 854. Another refueling system is known from US Pat. No. 5,343,906. By means of a refueling system, not only a vehicle but also, for example, an aircraft or an underground tank can be refueled.

An object of the present invention is to provide a refueling system which improves a refueling operation.

A solution of the problem succeeds, for example, in a Be ^¬ refueling system having the features of one of claims 1 to 16. Further solutions result in tank filling devices or tank inlets according to claims 1 to 16, which have the respectively associated features of the counter ^¬ tandes.

The refueling system has, in particular, a data communication device, whereby refueling, simpler, safer, and / or controllable, can be carried out by this or the data transmitted therewith. The data communication device is advantageous such extract ^¬ talten, for example, that there is no danger from sparks, or electromagnetic waves is produced. The refueling process relates in particular to gaseous or liquid fluids, such as gasoline, diesel, hydrogen, methanol, etc. A tank filling device comprises, for example, at its tank neck an optical data transmission interface, which is formed by the ends of a bundle of optical fibers, wherein the fiber ends are arranged on the outside of a plug-in element in a row. A tank comprises at its tank inlet a corresponding optical data transmission interface, which is likewise formed by the ends of a bundle of optical fibers, wherein the fiber ends are also arranged in a row on the outside of a mating plug element which fits to the plug element. This allows, for example, an over ^¬ transmission of emission-related data on the optical

Interface. The use of optical fibers as a data communication device prevents a possible sparking when contacting electrically conductive data transmission cable.

Serves a refueling system, eg filling a hydrogen tank (gas or liquid) or other gas tanks ^¬ so exacting requirements have to be done regarding the explosion onsschutzes. The formation of sparks should be avoided. The refueling system has, for example, a gas-tight, suitable for filling hydrogen, filler neck. The filler neck of the tank filling device is equipped with a data transmission interface with which data can be transmitted via the tank to be filled, for example of a vehicle, to the tank filling device. Relevant data to be transmitted are, for example:

• the size of the tank to be filled;

· The temperature in the tank to be filled;

• the pressure in the tank to be filled;

• etc.

With this data, it can be determined, for example with the aid of the tank filling device or another further refueling device, how much gas has to be filled into the tank in order to fill it as completely as possible. For gas tanks, eg also for hydrogen tanks, the problem occur that the temperature of the gas exerts a very large influence on the gas pressure, so that only a pressure measurement when filling the tank regularly not ^¬ sufficient to actually fill this approximately 100%. A transmission of data, for example, with respect to said parameters allows an improved refueling, which continuously records the data advantageous transmitted and can be ausgewer ^¬ tet. For gas tanks, especially in water ^¬ material tanks, is to ensure that a data transmission cut parts no ignition of the gas and no explosion of the gas can cause.

With the increased use of so-called zero-emission vehicles whose primary fuel is hydrogen, which is converted into electrical energy in fuel cells, for example, in order to drive emission-free electric motors, the importance of safe refueling systems is increasing. Hydrogen gas can be stored, for example, in high-pressure pressure tanks with a pressure of approximately 800 bar. When filling such a pressure tank, it is advantageous for safety reasons to use Be ^¬ tankung a highly secure mechanical coupling.

With the aid of a data communication device, at least one unidirectional communication, e.g. between the vehicle with the vehicle tank and a gas pump, so a Tankbefülleinrichtung establish. The tank filling device is compatible with the tank to be filled.

The refueling system is designed such that the vehicle tank tells the pump, for example, for which maximum pressure it is suitable and when the filling end (= maximum ^¬ pressure) is reached. Optionally, further data may be relevant, such as tank interior temperature, owner identification for billing purposes, etc. It may also be advantageous if bi-directional communication may take place instead of unidirectional communication, eg for the purpose of accelerated filling with variable flow over time. Assuming that a tank clutch is at least currency ^¬ end of the refueling in a potentially explosive area, ie in a region which is at risk of explosion, wired communication interface with Energieflüs ^¬ sen (electric current) can be a problem in the ignitable range. Fiber optic cables can help here. However, under certain circumstances, a complex fiber optic structure may be carried along with a refueling hose. The tank coupling necessary for refueling relates on the one hand to a tank inlet and on the other hand to a corresponding filler neck. Inlet and filler neck can be so out ^¬ forms that this is a flange system or even a kind of screw or Ba onett-closure.

In order to improve the operational safety of refueling, an arrangement with a tank filling device and a tank inlet can be used, in which the operating ^¬ safety increases and a threat is reduced by the data communication device or a data transmission interface. A refueling system with a simple and quick coupling of a tank neck of the tank filling device to the tank inlet is also desirable.

A refueling system includes, for example, a tank inlet (eg, a flange, a clutch, a Ba onettverschluss, etc.), a tank filling device, which fits functionally according to the respective tank inlet and a radio-based data ^¬ communication device. For refueling, for example, liquid hydrogen, gaseous hydrogen, liquid gas, natural gas, or the like is provided. By means of a radio-based data communication device, a radio link for data transmission between a first data communication subscriber and a second data communication subscriber can be set up. The tank inlet is for example a vehicle (truck, car, motorcycle, airplane, etc.) zugeord ^¬ net. The first data communication subscriber is therefore assigned to the vehicle. This may, for example, a tank system of the vehicle or a control system of the vehicle concern, or be arranged there. The second Datenkommu ^¬ nication subscriber is assigned to a tank source, such as a gas pump, a tanker truck, a tanker aircraft or the like.

Has a gas refueling device a data communication ^¬ device (communication device), which with radio technology, that wirelessly (for example, through the use of electromagnetic waves) is operating, then the Betankungseinrich- tung be made safer than, for example, in the use of communication cables which in an accident could be severed. Instead of the wireless radio-based communication, for example, a light-based communication may be provided. For example, light in the infrared range can be used for this purpose.

With the aid of radio operation, a clear assignment of a tank (e.g., a vehicle tank) to a gas pump, or to a plurality of dispensers, may become possible. This is achieved, for example, by the use of RFID technology or by measuring signal powers of transmitting antennas.

When using an RFID tag with an RFID tag on the part of the vehicle tank and an RFID detection in Nahfeld ^¬ area of the filler neck misallocation of multiple vehicles with distances in the meter range to a single pump can be virtually eliminated.

It is also possible to channel the transmission power in such a way that it essentially only reaches a specific receiver. This can be based on a spatial limitation of HF energy, which can be realized, for example, by constructive measures on the filler neck and vehicle tank opening. HF radiation can be conducted in a channel (eg a waveguide) between the filler neck and the vehicle tank opening in such a way that the HF radiation (carrier medium of the data connection) does not reach further vehicles or tank openings. In one refinement of the refueling system, the filler neck has a waveguide, with the waveguide of the filler neck connecting to another waveguide when the tank neck is coupled to the tank inlet, with a gas-tight waveguide next to a medium transport line being present in the coupled region of the tank inlet and filler neck the waveguide for coupling a high-frequency signal for data transmission is vorgese ^¬ hen. In the encapsulated at least in the coupling waveguide HF data transmission can then take place safely.

The refueling system can also be designed such that constructions within the mechanical tank coupling are avoided, which could serve as para ^¬ sitäre receiving antennas for radiated RF signals due to their shape and size and then possibly in the form of eddy current losses generated therefrom to dangerous heating could lead from components.

The refueling system may be configured such that the tank inlet is mechanically coupled to a hydrogen tank of a mobility machine (eg, a passenger car, a truck, a bus, a motorcycle, an airplane, etc.), and that the tank filling device (eg, a dispenser with a refueling hose). is mechanically coupled to a hydrogen tank. During a refueling operation, the mechanical coupling is e.g. lockable.

The data communication device has, as antennas, by way of example ring antennas. These can be integrated into a coupling ^mechanism . The integration may be such that there is a ring antenna in the coupling mechanism of the tank neck both on the vehicle side and on a tank ^¬ hose side. It is advantageous if at least one of the ring antennas is arranged within a coupling mechanism. Has the Tankbefülleinrichtung of the filling system a tank connection piece for connection to the tank inlet of a tank, so it can be provided a tank nozzle-side data transfer interface ^¬ and the tank inlet tragungsschnittstelle a tank inlet-side data transfers that said data ^¬ tragungsschnittstellen antennas are or comprise these. It can be designed passively the tank inlet-side communication interface ^¬ imagine. Necessary energy for operating the passively designed data transmission interface is transmitted from a corresponding antenna, which may be associated with the dispenser, to the passive data transmission interface.

In a refueling system, energy for operating a vehicle-side identification device can also be transmitted by means of the ring antennas, so that distortions on the part of the vehicle electronics can be avoided. This can increase the safety of refueling as potential misfuellings are detected. For example, an identification code which is evaluated in the vehicle-side identification device is transmitted via the antennas. The vehicle-side identification device is operated by means of energy, which is transmitted via the antennas. Falsifications on the part of e.g. manipulated vehicle electronics can thus be excluded. The transferred energy remains at any time below a critical level for the ignitability of a possibly existing ignitable gas mixture.

The refueling system can be configured such that a plurality of radio-based data communication devices have a normalized transmission power. A standardized Ausges ^¬ taltung tank neck and tank coupling may have the advantage that at a standard transmission power on the transmitter side on the receiving side a standard reception power must be detectable within a certain tolerance, due to which the reception of other stations outside this tolerance band as " Jamming device "can be excluded. by a certain assignment of filling tank and pump can meet.

A transmitter on a filler neck can therefore be provided to always send with the same transmission power. Due to the defined geometry of the filler neck, a certain receiving power can be assumed at the vehicle tank opening. A correct assignment between filler neck and vehicle tank opening is obtained if the measured transmission power coincides with the expected within a certain tolerance range, this being, for example, a ^¬ adjustable and correctable. For example, a mechanical part of the tank ^¬ African coupling replaced and the replacement has other material properties such as defective / replaced part on, then the radiated power changes. The tolerance ^¬ belt can be adjusted in this regard. , The fueling system, a plurality of tank fill devices, which are different from each other beab ^¬ standet example, the tolerance band can be adjusted in each case also dependent on the spacing of adjacent fuel dispensers.

The radio-based data communication device can also be designed such that different transmission / reception frequencies are provided for different dispensing columns.

In a further embodiment of the refueling system, the radio-based data communications device to an adaptive control of the power of an RF transmission signal, wherein the particular ^¬ a minimum possible transmission power is adjustable. By means of the adaptive control of the RF power to a minimum, litter detections in the environment can be excluded or minimized. This can be combined with suitable shielding. Shielding can be achieved by designing the structure of the filler neck and / or the tank coupling.

To identify a particular data communication connection, RFID tags or 1-wire devices may also be used become. In one refinement of the refueling system, the radio-based data transmission device is connected, in terms of data technology, to a clearly programmable RFID tag and / or to a 1-wire component with unique serial numbering. For example, a tank type can be identified by means of the RFID tag and / or by means of the 1-wire brick. The unique serial numbering can be permanently linked to a specific tank type as a reference. Using shared antenna paths, an RFID tag is read within a metalli ^¬ rule (ie shielding) environment.

According to a further refinement of the refueling system, an authentication of the user is provided. The user is for example a gas station attendant, a refueling station or another person who can be associated with refueling. This user has, for example, a data carrier which is linked to the transmitter on the vehicle tank. By means of the data carrier supplied by the user, the filler neck can identify the associated vehicle tank and only then accepts a filling of the correct vehicle tank.

According to a further refinement of the refueling system, a database is provided for the comparison of read-out data. To increase the safety of refueling, a check of read data with a reference record in a global database to exclude counterfeits, for example, from tank data or vehicle data.

According to another embodiment of the refueling system is provided see ^¬ a test device for testing a Prüfschlüsseis, wherein a release means is provided for refueling by means of which a filling is releasable depending on the testing device. Characterized in that in addition to the direct radio path, a key is used, for example in the form of a record on a smart card, whose specific data is first confirmed tap-proof on the direct radio path before the refueling is activated, an increase in the security of the data transmission can be carried out.

According to a further embodiment of the refueling system, a position sensor is provided, wherein a refueling can be released depending on an actual value of the position sensor, wherein the position ^¬ sensor is in particular an optoelectronic sensor. The at least one position sensor can be used in such a way that data communication and / or a refueling process only start after reaching an "end position" of coupling elements of a coupling for refueling. To avoid sparking, an optoelectronic sensor can be provided.

According to a further refinement of the refueling system, a gas sensor and a unit for controlling the transmission power of the radio-based data communication device are provided, wherein the transmission power can be adapted as a function of measured values of the gas sensor. By using fast gas sensors, the RF power can be controlled in real time, depending on the content of the ignitable mixture.

According to a further refinement of the refueling system, at least one sensor for detecting a break of a refueling hose from a fuel pump is provided. For this purpose, the fuel pump has a short-circuit device for short-circuiting electrical lines, the electrical lines being electrically connected in the intended operating state to electrical lines in the refueling hose. When demolishing the refueling hose from the fuel pump, the short-circuiting device is activated. Thus, this is a safety device at the interface fuel pump refueling hose. If the hose is torn off the column, a flow of current in cables carried in the hose is prevented and no sparking occurs. The tearing of the tube can be detected by one or a plurality of position sensors. If the position is incorrect, the current is led past the hose before the point of separation, in which the path through the hose in front of the hose Hose is shorted. The cable guide can be looped.

By a second safety separation point on the stationary side of the refueling hose, the safety achieved by a wireless solution of the system can be further increased ^¬ who. This can be advantageous in the case of a system with radio receivers (also transmitters in the case of passive RFID tags and in bidirectional operation), with current-carrying cables in the refueling hose.

In a further embodiment of the system, position sensors on the hose and the fuel pump (which represents a tank filling device) and a looped cable guide in front of a plug-socket disconnection point ensure that the current flow is switched off in good time by the position detection during a violent removal of the refueling hose can cause that in the separating contacts no more ignitable sparks can arise.

The hose for fueling, for example, in such a decor with dark ^¬ tet that it has a desired separation point (eg for forgetful drivers, ...) has. Thus, in this forced separation, the current-carrying cable, which still exists at this point, do not generate sparks, the associated cable is laid in loops, so it initially remains a egg ^¬ ne time remains at hose separation, until it s.einem appropriate socket connector Connection is also forcibly separated. In the time Y, in which a cable excess length X is pulled apart with the velocity v, a Siche has ^¬ approximately electronics chance the cable floating being shuttered ^¬ th. This is also for example in turn triggered by a / multiple location sensors, the hose separation detect and signal. Such a position sensor may for example be a light barrier (optical) or eg a reed relay with magnet (mechanical-magnetic) or a Hall sensor with metal part or the like. The invention will be explained below with reference to Ausführungsbeispie ^¬ len. Showing:

1 shows a refueling system 10;

2 shows an RFID-based data transmission system in ei ^¬ nem refueling system;

3 shows a ring antenna-based data transmission system in a refueling system;

4 shows a waveguide-based data transmission system in a refueling system; and

5 shows a separation point of a refueling hose;

The illustration according to FIG. 1 schematically shows a situation in which a plurality of vehicles 25 are refueled. At a loading tankung with the illustrated example of a refueling system 10, for example, a data communication is ^¬ sets, wherein by evaluating the received power is performed an active filtering of the transmission sources. The vehicle 25 has a tank 24, which is connected to a tank inlet 20. The vehicle 25 further includes a ^¬ An antenna 41st By means of this antenna 41 data can be transmitted to a further antenna 40, 42 via a radio signal 39. Antennas 40 are each associated with a tank filling device 30 (eg a gas pump), or a central monitoring or control unit 21. The central monitoring ^¬ or control unit 21, as well as the Tankbefülleinrichtungen 30 are data communication participants, which can handle data communication via a common antenna (not shown in FIG 1). The tank filling devices 30 are connected to a common tank 34. A tank filling device 30 has one or more of the following features:

• a tank neck 32;

· A hose 31, so that the tank neck 32 as with the

Arrow 49 symbolizes at tank inlet is approachable;

An antenna 42; A means for receiving power detection 47, by means of which the signal strength of a received Funksig ^¬ nals can be determined, by means of the radio strength, an assignment of Tankbefülleinrichtungen 30 to the respective tanks 24 is possible;

A release device 52, by means of which a refueling can be released, this depending, in particular, on a positive check of the safe refueling and / or the approval of the refueling by a checking device 51;

• the test device 51;

• a database 50 for comparison of readout data or at least a data connection to a Derar ^¬ term database;

• a unit 55 for controlling the transmission power of the radio data, in particular the transmission Leis ^¬ tung depends adaptable measurement values of a gas sensor 54; and or

• a short-circuiting device 57 for shorting electrical lines, which are connected to the hose 31 for refueling.

The central monitoring or control unit 21 has one or more of the following features:

An antenna 42;

A means for receiving power detection 47, by means of which the signal strength of a received Funksig ^¬ nals can be determined, by means of the radio strength, an assignment of Tankbefülleinrichtungen 30 to the respective tanks 24 is possible;

• the test device 51; • a unit 55 for controlling the transmission power of the radio data, in particular the transmission Leis ^¬ tung depends adaptable measurement values of a gas sensor 54; and or

• a database 50 for comparison of readout data or at least a data connection to a Derar ^¬ term database.

In a radio-based solution, carrying cables or optical fibers, e.g. be avoided in a gas pressure hose in case of gas refueling. By already described unique assignment method of different radio subscribers, a confusion of records during refueling can be avoided.

In one embodiment of the refueling system 10, this is constructed in such a way that gas pumps (tank filling devices) are to be unlocked. For clearing the petrol pump, a data carrier is fed, e.g. a chip card or a card with magnetic stripes. Communication between the fuel pump and the vehicle is via a radio link. The data carrier is linked to the vehicle that is to be refueled. On the disk is a secret (and possibly encrypted) record, which knows only the vehicle to be refueled. The petrol station polls this secret record in the vehicle to be refueled in a secure manner. The query is such that a third listener can not recognize the record and possibly copy it. Only if the vehicle confirms by the correct answer to the query that it belongs to the data carrier, a refueling can take place. This starts e.g. only when position sensors have recognized the correct closure of the tank coupling.

The illustration according to FIG. 2 shows schematically the use of RFID technology in a refueling system. Shown is a nozzle 26 for H2 ~ refueling. An RFID tag 27 may be included in a possibly deleted communication area 28 be positioned. The nozzle 26 is a coupling 29 is assigned ^¬ . The coupling 29 has a hood 19 for shielding radio waves and a tube 31. Furthermore, an RFID reading antenna 18 for reading out the RFID 27 is provided. The clutch 29 may be coupled to a fuel pump for the fuel H2.

In the environment of the filler neck on the vehicle being fueled uniquely associated RFID tag befin ^¬ det in one embodiment. This may be using an RFID reader will read ^¬, the reader should be such that the generated RF energy reaches the level of the ignition of hydrogen gas mixtures at any time when hydrogen to refuel.

In the design of the tank nozzle in some Ausges ^¬ taltungen should be noted that no annular parasitic antennas arise that could be heated by eddy currents so that ignition could arise for a gas mixture. In order to avoid a large readout range and thus a large spread, the reader for the refueling case is mounted on the tank hose and the coupling in such a way that, in the case of coupling, a virtually hemispherical shielding to the outside takes place and the reader only has RFID tags in the vicinity of the sensor Tank stop can detect. Thus, by the combination "Mechanical shielding," and reaches "selective An antenna performance ^¬" that only the assigned to the tank filler neck RFID tag can be identified and can only be communicated with it.

A tank and / or vehicle-specific RFID tag can also be mounted in the interior of a vehicle-side filler neck, which is made of metal, for example. Since a "normal" function for an RFID tag is questionable in a metallic environment, tank-specific data is transmitted from the RFID tag or from a functionally similar on-board electronics to an annular antenna in the coupling area of the filler neck as a remedy. In a similar arrangement, the gas pump hearing coupling part provided with an annular antenna coil, so that in the coupled state, an HF-Übertra ^¬ tion can take place between the two annular antennas. A position sensor can be used for raising a transmission power before the final coupling position (locking) is reached. A complete coupling must be carried out in a highly gastight manner, so that gas explosions can be ruled out by ignitable HF energy radiation. An RF signal selectively controlled via gas detectors can additionally increase safety.

The illustration according to FIG. 3 schematically shows a data transmission by means of ring antennas 23, 33. The filler neck 32 has a first ring antenna 23. The tank inlet 20 has a second ring antenna 33. The loop antennas are integrated into the tank ^¬ clutch. In a coupling region 43 are not only the ring antennas 23, 33 but also seals 34 and 35, which seal the ring antennas 23 and 33. At least one of the ring antennas 23, 33 has a connection to a reading device. The further ring antenna, in particular that in the neck, for example, has a connection to a motor vehicle code. The tank inlet 20 has, in addition to the ring antenna 33, a gas sensor 54 and a position sensor 53. With the help of the position sensor, the position of the fuel nozzle 32 can be detected.

In one embodiment of the fueling system, there is a de ^¬ finierte coupling geometry, otherwise vehicle tank opening and tank neck are not compatible with each other and a refueling will not work. An RF transmission source is placed at a particular location of the refueling system. This transmission source transmits with a defined signal strength. Since the design of filler neck and vehicle tank opening in a refueling system can always be the same, it is possible assume that when placing an RF receiver at the complementary location to the transmitter there the measurable signal strength of the received signal within a certain tolerance always be the same becomes. If the receiver now receives a signal which is clearly different from the expected one Different signal strength, it can be assumed that the Sig ^¬ nal another source is collected as the associated gas pump. For bidirectional communication, transmitters and receivers are placed at the two locations.

The illustration according to FIG. 4 shows a refueling system in which the filler neck 32 also has a waveguide 45 in addition to a refueling channel 36. The tank inlet 20 has, as a counterpart to the filler neck 32 as well as a waveguide 46, and an inlet opening 43. Coupling of the tank filler neck and vehicle tank opening correspond. The two coupling pieces fit each other so that both cave conductors 45, 46 are sealed gas-tight. By means of the waveguide or other constructive measures, RF energy can be routed to the filler neck and vehicle tank opening. When refueling is carried out, the filler neck and the vehicle tank opening are connected to one another in such a way that a cavity forms at one point of the bearing surface. In this cavity, a radio transmission can take place. The cavity can be designed, for example, as a waveguide for RF energy. In this case, the width would have to be at least 75 mm for 2.4 GHz waves. If the fuel filler neck and the vehicle tank opening are made of metal, the shielding achieved thereby prevents HF energy from escaping out of the cavity. The cavity is gas-tight so that gas and radiation remain separated. Position sensors 53 on filler neck and vehicle tank opening detect whether the filler neck is in the coupled position. Only when the final refueling position has been reached, transmission ^{stages of} the radio modules are activated.

The illustration according to FIG. 5 shows a hose separation point. Shown is a stationary tube part 2 and a movable Lich tube part 3. A separation sensor 56, which operates on opti ^¬ shear and / or magnetic base is provided to determine a separation of the tube parts 2 and 3. If a hose separation is detected, dangerous potentials can tiale be closed in a cable inside. This ge ^¬ schieht advantageous in a few μ-seconds. An electric cable has a looped cable guide and a cable separator 5. The cable separator 5 is for example a plug-socket system. If the cable with potentially explosive potential (in / on the hose) after hose separation is eg x meters long, the reaction time for cable separation is calculated from the relative speed of both hose parts to each other

Claims

claims

1. refueling system (10) which has a Tankbefülleinrichtung (30) and a radio device (40,41,42), wherein by means of a radio link, a data transmission between a first Datenkommunikationsteilnehmer (21,30) and a second Datenkommunikationsteilnehmer (25) is buildable.

2. refueling system (10) according to claim 1, characterized in that a tank inlet (20) with a fuel tank (24) of a mobility machine (25) is mechanically coupled and that the tank filling device (30) is mechanically coupled to another fuel tank (34), wherein the fuel tank (24) and the other

Fuel tank in particular hydrogen tanks are.

3. refueling system (10) according to claim 1 or 2, d a d u r c h e c e n e c e s in that the tank filling device (30) has a tank neck (32) for connection to the tank inlet (20) of a tank (24), wherein the

Tank neck (32) has a tank side data transmission ^¬ interface (23) and the tank inlet (20) has a tank inlet side data transmission interface (33), in particular the data transmission interfaces (23,33) are antennas.

4. refueling system (10) according to one of claims 1 to 3, characterized in that the radio device (40,41,42) has a ring antenna (33), wherein the ring antenna (33) in a coupling region (43) of tank inlet (20). and filler neck (32) is arranged.

5. refueling system (10) according to any one of claims 3 or 4, characterized in that antennas (23,33) are arranged within a Kupplungsmechnik, in particular an antenna (33) on a vehicle side and an antenna (23) on the side of the fuel filler neck ( 32).

6. refueling system (10) according to any one of claims 1 to 5, characterized in that in particular ^¬ special by means of ring antennas (23,33) energy for operation ei ^¬ ner vehicle-side identification device is transferable, so that distortions on the part of the vehicle electronics can be avoided.

7. refueling system (10) according to any one of claims 1 to 6, characterized in that the tank neck (32) has a waveguide (45), wherein in coupling the tank nozzle (32) to the tank inlet (20) of the waveguide (45) of the tank neck (32) to another waveguide (46) connects, wherein in a coupled state of tank inlet (20) and tank neck (32) a gas-tight waveguide in the coupling region next to a medium transport line, wherein the waveguide is provided for coupling a high-frequency signal for data transmission ,

8. refueling system (10) according to one of claims 1 to 7, d a d e r c h e c e n e c e s that the

Radio device (40,41,42) has a normalized transmission power.

9. refueling system (10) according to one of claims 1 to 8, d a d u c h e c e n e z e i n h e that e

Receiving power detection (47) is provided, wherein the refueling system in particular a plurality of Tankbefüllungs- devices (30).

10. refueling system (10) according to one of claims 1 to 9, characterized in that an adaptive control of the power of an RF transmission signal is pre ^¬ see, in particular, a minimum possible transmission ^¬ power is adjustable.

11. refueling system (10) according to one of claims 1 to 10, characterized in that a Da ^¬ tenkommunikationsteilnehmer (21,25,30) data technically with a nem programmable unique RFID tag is connected and / or data technically connected to a 1-wire device with unique serial numbering, wherein by means of the RFID tag and / or by means of the 1-wire device, a tank type is identifiable.

12. refueling system (10) according to one of claims 1 to 11, characterized in that a data bank ^¬ (10) is provided for the adjustment of read-out data.

13. refueling system (10) according to any one of claims 1 to 12, d a d c h e c e n e c e in that a testing device (51) is provided for testing a Prüfschlis, a release device (52) is provided for refueling by means of which a refueling depending on the test device is releasable.

14. refueling system (10) according to any one of claims 1 to 13, d a d e r c h e c e n e c e in that a La- sensor (53) is provided, wherein a refueling depending on an actual value of the position sensor is releasable, wherein the position sensor is in particular an optoelectronic sensor.

15. refueling system (10) according to one of claims 1 to 14, characterized in that a gas sensor ^¬ (54) and a unit (55) is provided for controlling the transmission power of the data radio, wherein the transmission power is adaptable depending on measured values of the gas sensor.

16. refueling system (10) according to one of claims 1 to 15, characterized in that a Sen ^¬ sor (56) for detecting a tear of a refueling hose is provided by a fuel pump, that the fuel pump a short-circuiting device (57) for short circuiting electrical lines , wherein the electrical lines are electrically connected in the normal operating condition with electrical lines in the refueling hose, and that at Demolition of the refueling hose from the fuel pump the short- ^{circuiting device can} be activated.