DE4213414C2 - Electricity charging system with several electricity dispensers for charging electrical energy collectors from electrically driven vehicles with electrical energy - Google Patents

Description

The invention relates to a power charging system with several Electricity dispensers, each with at least one socket for plugging in a charging cable and using it ordered mechanical security are provided and those one energy meter and one each Computing device determining electricity price are assigned.

A power system of this type is from the US-A 4 052 655, which is a charging system with several each shows self-sufficient petrol pumps, each with at least one socket for plugging in a drawer cable and a mechanical assigned to it Fuses are provided and each one has an energy quantity counter and determining the electricity price Computing device are assigned. With this arrangement it is a combined petrol station for rivers fuel and electricity. At filling stations for liquid However, fuel is usually operating and / or Surveillance personnel provided. It is therefore presumed to go here, which is also designed as a charging station tete area of the known arrangement is monitored. The problems that occur during unattended operation with regard to functional and accident safety and ver prevention of sabotage etc. are therefore provided this arrangement is not. Therefore here are also with exception one the plug of the charging cable in the assigned Locking socket when setting the desired  Activation of loading time and free when paying the price lock claw that can be given is no suitable safety facility provided; the one with the locking claw security achieved is not satisfactory. Is too the system constructed like a parking meter does not power designed fairly. In addition, payment is made through Coin insertion, which is an expensive theft protection, e.g. B. due to the use of massive, expensive housings makes, and a high maintenance and monitoring effort conditionally.

From US-A 3,765,567 is a gas station arrangement for known liquid fuel at the several petrol pumps a central terminal is assigned. This arrangement is for the design of a charging station and the establishment of with current-appropriate execution required safety devices cannot be used. Monitoring operations such as monitoring whether gasoline actually flows into the tank or the like not provided.

Charging automobiles on each self-sufficient working parking meters connected to the mains during the parking period is from the older application DE 41 01 053 known, at which the amount of electricity consumed by Money coins or with a check card. Here the problem arises that diverse There are opportunities for manipulation.

Proceeding from this, it is the task of the present one Invention, a power charging system of the generic type to improve simple and inexpensive means so that even with unmonitored operation a high Operational and functional safety are guaranteed can.  

This object is achieved in that a central terminal is provided, which is connected to the Energy metering devices of all electricity dispensers contains signal line-linked computing device and with the operational components of all electricity taps pillars is signal line linked, whereby between the Terminal and each fuel dispenser each one of these assigned interface device is switched on a the operating state of the mechanical fuse controlling safety device, one at Safety device responding to malfunctions and a safety device monitoring fault currents holds.

With these measures, the disadvantages of generic prior art completely eliminated. By having all the information processing, i.e. the entire organizational and Booking tasks such as authorization check, functional testing and approval, price determination and booking etc. are relocated to a central terminal the structure of the individual petrol pumps is very simple, which has a positive effect on the production costs. The Number of those required for information processing Components are reduced even with a large number of dispensers on one sentence, namely that of the terminal. In this To However, it cannot be overlooked that at Charging stations due to the very high required Cycle times only need a large number of taps results.

Another advantage of the measures according to the invention is to be seen in the fact that not only an inexpensive overall construction is achieved, but also a high degree Safety. The central terminal not only enables a high level of ease of use, with which already operating  errors is effectively prevented, but enables in In case of malfunctions etc. also a reliable one Signaling, which further prevents errors. The Interface device according to the invention guaranteed a high level of security in everyone at one for surveillance-free operation of a suitable charging station important direction, namely against incorrect operation and Sa botage, overcurrents and false currents. An accident or ver risk of injury is therefore largely excluded.  

In a further expedient development of the invention the computing device for a multiplication circuit the formation of the charge for the energy withdrawn corresponding signals from the amount of energy metering devices of the signa supplied len and correspond to the price per unit quantity of energy corresponding signals.

The conception according to the invention shows those with the determination of the withdrawn amounts of energy and their billing related plant compo components for all power pumps independently of summarize their number in a central terminal, that of the power pumps only the corresponding ones Information signals need to be fed to the Manufacturing price of each electricity pump and thus also the cost price of the entire charging system in the Comparison to a conventional electricity charging system with significantly reduce the same number of power pumps  device. It also provides the possibility of electricity petrol pumps as standard units of the same design Obvious dimensions and components for ferti what about a rationalization of production accordingly the cost price not only of the individual Electricity pump, but the entire electricity charging system good is coming. This is just like the reduction achieved the weight of the individual fuel dispenser also the La storage and production, warehousing and ver drive logistics highly beneficial, which also makes the Cost price of an electricity charging system according to the invention can be influenced favorably.

The number of with the determination of the remuneration for the ent required amount of energy required components reduced refer to a single sentence of the same, namely that of central terminals. The advantage of this is the elimination of Weight and cost of an unnecessary number of such compos and an increase in the universality of the whole Electricity charging system due to greater flexibility with regard to on the adaptation to site-specific contingent circumstances and requirements of the respective Ein sentence case.

The invention clearly provides the possibility without the previous inconvenience of the well-known Stromla system for the user only the actually ent amount of energy taken and the remuneration for this to collect and collect. The motorized audience is there show an increased willingness to electro  to use vehicles if on the one hand only short or with Tel routes are to be overcome and in the meantime long longer stand or parking breaks are available and available on the other hand at the selected locations, such as Office and administration buildings, department stores, so-called Park-and-ride parking lots at public stops means of transport or in parking lots of sports facilities or cultural centers, such as exhibitions or concerts halls or theaters, or in conventional parking lots sern, power charging systems according to the invention available stand.

This results in a very simple constructive Training and safe execution by namely the interface devices each with an electri circuit board and / or electronic components can be reduced and only for these a comparatively inexpensive contact rail against weight must be provided.

According to an expedient further education, the Inter face facilities each have a control circuit for the  operational components of the assigned electricity dispenser and a signal decoupled from it circuit for delivery of the operating states of these Components corresponding signals and their forwarding to the central terminal. This leaves not only the electrical circuit is advantageous simplify, but also an increase in operating achieve security.

Furthermore, the Er Find the central terminal using a button Field operable dialing device, which with al len power pumps is connected to the signal line and with means a power tap desired for energy consumption column can be selected. The interpretation can be so hit be that the selection device can be checked, whether the selected or selected electricity dispenser is ready for delivery, and otherwise a different one Electricity dispenser by, for example, light signal for Ener suggests or specifies casting removal.

After another practical training of the Erfin the central terminal can be a control device for the authorization of energy withdrawal from a stream have gas pump, depending on their activation by accepting the authorization of the respective user user the release of energy can be released. Here the control device can be a chip reading device for stamps. This can happen anywhere prove appropriate where recurring the same  remaining amounts of energy are to be reloaded, such as wise on a factory site where the employees limbs park their electric vehicles and correspond daily according to them provided by the general manager Chip brands always a constant amount of energy withdraw are authorized.

In the predominant number of applications of a power supply deananlage according to the invention, it will be a purpose prove moderate if the control device is a magnet card reading device for identification cards points. The control device can expediently be a Be assigned security device, through which only at Acceptance of further identification information, such as for example a personal identification code (e.g. secret number) the withdrawal of energy at each current tap is released, if the same the control facility by accepting the Magnetic card is activated. This makes the Security against abuse and especially unauthorized Increased energy consumption.

Another measure expediently further developing the invention assumption is that the central terminal is one of the Subordinate printer device for computing device Output of a log document for the loading process after Termination of the same. It can be advantageous central terminal one of the computing device and / or the Printer device upstream storage unit for Ab storage of the data required for billing or  Identification data of the respective user, as with for example customer name and number, as well as date and Time of the energy extraction process, energy delivered ge in kWh, for example.

Furthermore, the invention can thereby advantageously be completed be that the central terminal is a display dis play for the individual operations of the respective Chosen current dispenser, which preferably over LED display at least the last expired operator shows the next step to be performed announcement step. This will make the user Experience has shown that friendliness has increased significantly the acceptance of such a charging system by the Audience improved.

In a further expedient development of the invention each interface device is a safety device to show that energy consumption is assigned to it Only use a power dispenser if one of them is unused added operating exclusion state, such as For example, when a plug is in the closed position close area of a vehicle-fixed connection cable compartment of the stand covering the same swivel door, can be released.

To increase active and passive safety in Form of both operational security and avoidance danger of physical injury to the user or other audience can continue to interface any  direction have a safety device through which che when malfunctions occur, such as as an overcurrent predetermined minimum current, the energy withdrawal at the assigned electricity dispenser is lockable.

The further measure serves the same goal, that each Interface device on a security device indicates by which when fault currents occur certain minimum current, such as creep flow on the outer surface of the connecting cable, the Block energy consumption at the assigned power dispenser is cash.

In the following, the invention is based on a preferred Embodiment that shown in the drawings is described purely in more detail, for example. It shows

Figure 1 is a power charging system according to the invention with two electricity dispensers shown in side view and between these a front view of a common central terminal.

Figure 2 is a schematic representation of a circuit diagram of the power or charging circuit. and

FIGS. 3a and 3b consisting format for the sake of graphic representation separately reproduced parts of an interface means with control circuit for the required operational components of the associated current pump and said electrically decoupled signaling circuit for outputting the operating states of these components corresponding signals and their transmission to the central terminal .

As can be seen here from FIG. 1, the power charging system, designated as a whole by 40 , has two power dispensers, each designated as a whole by 1 , and both assigned a central terminal designated as a whole by 41 .

The power dispensers 1 each have a foundation or a base 2 which is fixed to the floor and on which a stand 3 is arranged which carries an operating unit 4 . The control unit 4 is protected against unauthorized access by a cover hood, which is shown but not described in more detail, and which has a viewing window 30 for the perception of the display of an energy quantity measuring device and a multicolored cover panel for function lamps 24 . In this case, these are designed as simple white lamps, which are arranged on the operating unit 4 , but they can also be designed as colored lamps, in which case a colored cover panel for the cover hood is unnecessary, but rather can be made simply translucent. The power dispensers 1 each have at least in the area of their stand 3 a not recognizable in Fig. 1 recess for receiving and leading down the or the plug-close areas (s) of the vehicle-fixed connection cable (also not shown) from the body height Socket arrangement for light and / or power current, this receiving compartment for the connection cable being formed in connection with a swing door 15 shown in FIG. 1 in the closed position, which is articulated on the stand 3 of the respective power dispenser 1 for pivoting.

The central terminal 41 also has a foundation 42 on which a stand 43 is arranged, which in turn carries an operating unit 44 . In Fig. 1 it is also shown that the stand 43 of the central terminal 41 , in which the required components can be accommodated but do not need to access to secure against unauthorized access and unauthorized manipulation with a cover 45 is closed.

Each fuel dispenser 1 has a charging circuit, designated as a whole by 71 , which is illustrated in FIG. 2. It is shown in a de-energized state in the usual way. Shown in solid lines is the high-voltage current path via a 3-phase fuse F3 and a 1-phase fuse F4 as well as a 3-phase enable contactor K1 ₁ and a current monitor K11 and a residual current circuit breaker Q1 to an energy gene measuring device 49 (counter) and from there via fuse F2 back to the other voltage potential, the fuses F3 and F4 being connected in parallel to one another, but all other components being connected in series to one another. A 3-phase fuse F1 is connected to the side of the fuse F2 facing the counter 49 . On the side of the fuse F2 facing away from the counter 49 , the line branches into a line containing a heater 72 and a line containing a release contactor K1 to which a contact K8 _{1 of} a coupling relay K8 of the control circuit shown in FIGS . 3a and 3b is connected and a string containing a current monitoring contactor or relay K11. The neutral conductors N and protective conductors PE are also shown in dash-dotted lines.

Each fuel dispenser 1 is also assigned an interface device designated as a whole by 46 and surrounded by dash-dotted lines, which either in the power dispenser 1 it serves or together with the corresponding interface devices 46 of the other power dispenser (s) 1 im Central terminal 41 can be accommodated. As apparent from Fig. 3a and 3b, each weils the interface device 46, a control circuit 47 and a signaling circuit 48, both of which are separated by a dash-double-dotted line in the representation. The control circuit 47 and signaling circuit 48 work like all other details of the interface device 46 with a signal voltage of 24 V.

The control circuit 47 has a dash-three-dot delimited start-up circuit 60 , which at the same time serves as a safeguard that energy can only be drawn from the associated power dispenser 1 when the swing door 15 of the same is closed. As shown, there is a switch 62 which can be actuated on the basis of a start-up pulse of 1 sec duration coming from the operating unit 44 of the central terminal 41 and a pulse which resets to a longer pulse of an adjustable between 1 min and 6 min, preferably 2 min Timing element K10 and a relay K6a and a relay K6b in parallel to the sem connected line between a pulse switch 62 and timing element K10 connected to the sem to the control of a signal generator designed, for example, as a buzzer 73 or otherwise acoustically or optically acting. The latter is shown in a separate line branch shown in FIG. 3b, in which a contact K6b _{2 of} the control relay K6b is also connected in series. Coupled with this circuit is a further current path connected to the connection point of the two relays K6a and K6b, in which a contact K6b _{1 of} the control relay K6b and a further contact K5b ₁ are connected in series, behind which this current path leads to both voltage poles branches, wherein in one branch a contact K10 ₁ and in the other branch a contact K6a _{1 of} the relay K6a and this is followed by a door opener 65 which is ready to open when the timer K10 and the relay K6a are activated.

A contact 61 of the opener 65 of the swing door 15 is located in a separate wiring harness and this is connected in parallel with one another, a signal relay K5a for the status report to the terminal and a door signal relay K5b for the status report to the power dispenser 1 . The contact K6b ₁ serves as a self-holding contact for the relay K6a and remains closed once it has picked up. Contact K5b ₁ is intended to interrupt this latching of relays K6a and K6b. The contact 61 of the door opener 65 serves as a signaling contact and closes when the swing door 15 opens. The door opener 65 is bypassed by a connection point for a bridging contact, by means of which an emergency opening of the part of the same which is to be kept accessible to the user is possible in the event of unforeseen faults on the relevant power dispenser 1 .

In the ladder circuit shown in Fig. 3a and 3b is shown to the right, then in FIG. 3b is a further conductor strand, in which a control relays K7 and to this in series a magnetically operated switch 64 lie gene. Further to the right from the signal generator strand (see FIG. Summer 73 ) there is a further line path with a coupling relay K8 for controlling the release contactor K1 for voltage release to the socket (s) in the charging circuit 71 according to FIG. 2. In series with this release relay K8, which, as can be seen from FIG. 2, operates on the open contactor K1 in FIG. 2, there is a contact K7 _{1 of} the control relay K7 and a contact K5b _{2 of} the door detector relay K5b and a closed-circuit current contact 63 , which is controlled by the Zen switch terminal 41 and only establishes a power line connection as long as the associated power dispenser 1 is released by the terminal 41 .

Further, a current path with a signaling relay K9 is shown in Fig. 3b for the transmission of the results obtained from the associated current pump 1 quantity of energy ent speaking information to the central terminal 41 shown for purposes dortiger billing. In series with the signaling relay K9 is a pulse-operated current meter switch 74 (not shown) of a mechanical energy meter for activating the energy quantity pulses required for evaluation in the terminal.

Rightmost of completeness in Fig. 3b via hal shown also a wiring harness for the internal illumination 58 in which to this in series, a contact of the control relay ₂ K7 K7 is located.

To the left of the start-up and fuse circuit 60 , a further fuse device 67 is delimited in dotted lines in FIG. 3a, by means of which the removal of energy occurs in the event of malfunctions, such as, for example, an overcurrent of predetermined minimum current intensity, for example due to insulation damage or even a short circuit the associated power dispenser 1 is blocked. This fuse device 67 has a Lei line path in which a signaling relay K3 and in series with this in turn parallel circuit breaker F1 (assigned to the socket for single-phase or luminous flux) and F2 (assigned to the socket for three-phase or power current ) lie. Between the Si cherungsautomaten F1, F2 and the signal relay K3 is branched off a parallel path to the latter, in which a flasher unit 70 and a flashing red lamp 70 are a. If one of the circuit breakers F1 or F2 arises, for example, for the reasons mentioned, not only the signal relay K3 is actuated and switches one or both of the contacts K3 ₂ and K3 _{3 shown in} the signaling circuit 48 in order to transmit the message to the central terminal 41 That the relevant power pump 1 is disturbed, but it is also switched by actuation of the fuse switch F2, the release contactor K1 so that its contact K1 ₁ interrupts the power line via the energy meter 49 .

Further, a wiring harness with a signal relay K4 and to this in series a current monitor con tact K11 ₁ shown of the current monitoring relay K11 of the charging circuit 71, wherein between relay K4 and flow monitor contact K11 _1, which always turns when current flows, a permanently green lamp 70 b is closed. Via the contacts K4 ₁ and K4 _{2 of} the signaling circuit 48 , the message "current is running" is given to the central terminal 41 .

Finally, a further safety device 68 is also shown in dashed lines in FIG. 3a, by which the occurrence of fault currents of predetermined minimum current strength, such as leakage currents on the outer surface of the connecting cable, likewise blocks the energy consumption from the associated power dispenser 1 . This residual current securing device 68 has a line path with a signaling relay K2 for displaying the operating state at the central terminal 41 , which operates in a similar manner to the signaling relay K3. An earth leakage circuit breaker Q1 is connected in series with the signal relay K2, which closes when triggered. Between the signal relay K2 and the fault current protection switch Q1 is on the one hand a line path bridging the signal relay K2 in parallel with a flasher 69 a and this downstream flashing yellow lamp 69 a ₁ and in a further similar line path a further flasher 69 b with this downstream yellow flashing lamp 69 b ₁ connected. The yellow flashing lamp 69 b ₁ and the red flashing lamp 70 a and the permanently green lamp 70 b of the safety device 67 are connected to each other on their potential deep sides. The message from the signaling relay K2 to the central terminal can be made via the tapping contacts K2 ₂ and K2 _{3 of} the signaling circuit 48 . This also has the same type of contact taps K4 ₁ and K4 ₂ , which are assigned to the signaling relay K4, also the contacts K5a assigned to the signaling relay K5a ₂ and K5a _3, and - as can be seen in FIG. 3b men - to the signaling relay K9, contacts K9 ₂ and K9 ₃ . While with the relays K2, K3, K4 and K9 the signaling contacts K2 ₂ and K2 ₃ or K3 ₂ , K3 ₃ or K4 ₁ , K4 ₂ or K9 ₂ , K9 _{3 are designed} as NO contacts, the contacts K5a ₂ and K5a _{3 of} the door release signaling relay K5a are shown as changers. This only serves to illustrate that with each relay as desired or required or any corresponding on-site conditions, one or the other version can be used. Thus, the contacts K5a ₂ and K5a _{3 of} the relay K5a can also be designed as NO contacts and, on the other hand, the above-mentioned signaling contacts of relays K2, K3, K4 and K9 can be designed as changeover contacts.

On the far right in the part of the signaling circuit 46 shown in FIG. 3b, the supply line 75 of 24 V for the electricity meter and the interface 76 for this are also indicated.

The circuit of the interface device 46 , which, like the circuit 71 of the charging circuit according to FIG. 2, is shown in the de-energized idle state, is readily understandable for the person skilled in the art in terms of its electrical functioning, so that it does not require a description thereof. However, the operational sequence of a charging process on a power dispenser 1 is described below:

An electric vehicle is parked on the parking area belonging to a power dispenser 1 . The arrival time is set with the usual parking disc; the parking disc is clearly visible in the vehicle. Now the driver (user) goes to the central terminal 41 and inserts his magnetic card into the slot provided for this purpose in the magnetic card reader 55 of a control device 52 (cf. FIG. 1), since the terminal 41 in his display 59 via an LED - Display 59 a asks for this. Now the further prompt PLEASE WAIT, ENTER SECRET CODE appears on the display 59 . The user then types in his personal PIN on the number block 53 of the control device 52 . The other information in the display 59 is PLEASE WAIT, and in the event that both magnetic cards are accepted by the magnetic card reader 55 and the PIN, the further information PLEASE DISPENSER NO. CHOOSE. The number of the desired power dispenser 1 , that is to say that on which the electric vehicle was previously parked, is now selected on the keypad 50 using the keys 51 . The lamps 51 a assigned in each case indicate whether the relevant power dispenser 1 is free and functional (trouble-free). If this is the case, the swivel door 15 of the socket compartment on the desired power dispenser 1 is automatically unlocked, the display 59 showing PLEASE WAIT and then REMOVING THE CARD it appears. Now the magnetic card is removed from the reading device 55 .

Now the user can go back to the selected power pump 1 , open the swing door 15 and couple the plug of the connecting cable of his electric vehicle with the relevant socket for single-phase or three-phase current. Now the swing door 15 of the power dispenser 1 thus occupied is to be closed. A PLEASE NOTE DISPLAY indicator lights up on this. Running the charging process on the allocated power pump 1 ordnungsge from Mäss, that is flowing over the connecting cable-fault-free power, the green lamp is lit to 70 b (see. Fig. 3a) of the function lamp group 24 and, if necessary, additionally a display Charging continues. If there is any fault, this is also indicated by lamps and, if appropriate, corresponding readable information, for example by the red flashing lamp 70 a of the functional lamp group 24 in the event of a failure of the electrical line connection with a corresponding response of the safety device 67 and one or both in the event of a fault current the yellow flashing light (s) 69 a ₁ or 69 b _{1 of} the safety device 68 (cf. FIG. 3a) light up. After the loading or parking process has ended, the magnetic card is again inserted into the reading device 55 at the central terminal 41 and remains there. This unlocks the swing door of the power dispenser 1 occupied by the user. The information PLEASE UNPLUG THE CONNECTION CABLE appears on the display 59 . This is done by the user and the swing door 15 of the power dispenser 1 is closed again. In the display screen 59 of the central terminal 41, the information REMOVE CARD appears. This happens, and thereby the already closed swing door 15 of the power dispenser 1 is now locked. This is now ready for the next charging process. At the central terminal 41, a printer engine 56, the document output is shown in Fig. 1, a protocol document about the charging process, preferably with power charging system name, date, clock time of the beginning and end of loading, made of removed amount of energy in kWh and total price. For this purpose, the central terminal 41 has one of the storage units (not shown, because it is generally known to the person skilled in the art and / or the printer device 56), for storing the data or identification data of the respective user required for billing, such as customer name and number, and of The date and time of the extraction system, the amount of energy released, etc. are provided. The Re computing device also has a not shown, because the skilled person known multiplication circuit for the formation of the remuneration for the amount of energy corresponding signals from the energy metering devices (electricity meters) of the power dispenser 1 signals and the price per unit quantity of energy corresponding signals on.

In the event that when a selection key 51 is pressed by the lamp 51 a provided for this purpose, the one that the assigned power dispenser 1 is occupied or defective, the selection device of the central terminal 41 could be designed so that it polls all the power dispenser pillars 1 and checked which other Stromzapf pillar 1 is available instead of the occupied or defective for the desired charging process, and by a light signal, for example, a ready-to-operate other electricity dispenser 1 suggests or prescribes by default and also announces this by corresponding light signal 51 a.

During normal termination of the charging process, due to the fact that the (same) magnetic card was inserted into the reading device 55 for the second time, the central terminal in turn emits a second pulse and actuates the coupling relay K8 by means of the terminal switch 63 and thereby interrupts the charging process the functional sequence in the event of a fault in the respective power dispenser is different.

When the residual current circuit breaker Q1 is actuated as a result of the occurrence of a residual current, for example leakage current of a predetermined minimum current intensity, the display field 30 of the relevant power dispenser 1 flashes the yellow lamp 69 a ₁ assigned to a phase current supply or the yellow lamp 69 b ₁ assigned to the three-phase current supply. In addition, a yellow permanent indicator lamp provided for the general display of a fault, but not shown in FIGS . 3a and 3b, can light up. The customer can switch on the residual current circuit breaker Q1 himself, since it is safe for him to remove the residual current, for example by wiping or rubbing the connecting cable, unless the red flashing light 70 a is in operation, which signals a different type of fault should only be eliminated by operating personnel. After the fault current switch Q1 has been switched on by the user, the yellow indicator lamps 69 a ₁ and 69 b ₁ and any additional permanent yellow light lamp (not shown) go out, and the central terminal 41 signals operational readiness.

In the case of tripping of the circuit breaker F3 and F4, for example by insulation fault, the current-to management for each operating ski outlet for light or force current through the current meter 49 un interrupted and flashes the red lamp 70 a on the display panel 30 of the power pump 1 due to operation of a of the circuit breakers F1 and F2. Terminal 41 receives the message DISPENSER DISTURBED. This state remains until the components F3 or F4 and F1 or F2 have been brought back into the operating state by the operating personnel after the cause of the underlying fault has been eliminated.

It should be emphasized that, of course, the central terminal is designed so that it is able to operate a plurality of power dispensers 1 of the power charging system 40 according to the invention, but of course one after the other, that is to say whenever the recording of the magnetic card reader device 55 is ready to receive a magnetic card again. In Fig. 1 are also given any provided signs 57 and function keys 54 , the latter, for example, the initiation of document issuance, the interruption of a Stromzapf pillar dialing process may be provided due to error or other operating functions.

The current dispenser 1 , like the central terminal 41, can have other configurations than shown and described. In particular, the terminal 41 can have a stand 43 , which corresponds to the stand of the 3 of the power dispenser 1 in its design. This would make it possible to further rationalize and reduce the cost price of an electricity charging system according to the invention by simplifying and reducing the cost of production and facilitating production, storage and sales logistics.

Although the invention is based on only one preferred embodiment shown and be has not been written on this limited, rather, the specialist has a variety of options options open to you by different combination of yours Characteristics or their exchange for equivalent means to the particular manufacturing technology and / or storage-related and / or sales logos realities and / or the requirements of the individual application not least with regard to adjust the conditions at the installation site without there to leave through the scope of the invention.

Claims (17)

1. Electricity charging system with several electricity dispensers ( 1 ), each with at least one socket for connecting a charging cable and with an associated mechanical fuse (swing door 15 ) and each of which an energy metering device ( 30 ) and a computing device determining the electricity price are assigned , characterized in that a central terminal ( 41 ) is provided which contains the computing device linked to the energy metering devices ( 30 ) of all the power dispensers ( 1 ) and to the operationally necessary components of all the power dispensers ( 1 ) is signal line linked, between the terminal ( 41 ) and each power dispenser ( 1 ) each has an associated interface device ( 46 ) is switched on, which controls the operating state of the mechanical fuse securing device ( 60 ), one in the event of malfunctioning speaking safety device ( 67 ) and a Fe h contains safety device ( 68 ) monitoring the currents. 2. Power charging system according to claim 1, characterized in that the computing device a multi plication circuit for the formation of the remuneration for the amount of energy withdrawn corresponding signals from the energy metering devices ( 49 , K9, K9 ₁ ) of the power dispenser ( 1 ) and the signals supplied Price per unit quantity of energy corresponding signals. 3. Power charging system according to one of the preceding claims, characterized in that the inter face devices ( 46 ) are arranged in the central terminal ( 41 ). 4. Electricity charging system according to one of the preceding claims, characterized in that each of the interface devices ( 46 ) is arranged in an associated power dispenser ( 1 ). 5. Power charging system according to one of the preceding claims, characterized in that the inter face devices ( 46 ) each have a control circuit ( 47 ) for the operationally necessary components of the associated power dispenser ( 1 ) and a signaling circuit ( 48 ) decoupled therefrom for the acceptance of the Operating conditions of these components corresponding signals and forwarding them to the central terminal ( 41 ). 6. Power charging system according to one of the preceding claims, characterized in that the central terminal ( 41 ) has a selectable device ( 50 ) which can be actuated by means of a keypad ( 51 ) and which is signal line-linked to all power dispensers ( 1 ) and by means of which one wished for energy extraction Electricity dispenser ( 1 ) can be selected. 7. Power charging system according to one of the preceding claims, characterized in that the central terminal ( 41 ) has a selection device ( 50 ) for the individual power dispensers ( 1 ), by which it can be checked whether the selected or selected power dispenser ( 1 ) is ready to deliver energy , and which otherwise proposes or specifies another electricity dispenser ( 1 ) by, for example, a light signal for energy consumption. 8. Electricity charging system according to one of the preceding claims, characterized in that the central terminal ( 41 ) has a control device ( 52 ) for the authorization of energy consumption at a power dispenser column ( 1 ), depending on their activation by acceptance of the authorization of the respective user the release of energy can be released. 9. A charging system according to claim 8, characterized in that the control device ( 52 ) has a chip reading device for authorization marks. 10. Electricity charging system according to claim 8, characterized in that the control device ( 52 ) has a magnetic card reading device ( 55 ) for identification cards. 11. Electricity charging system according to claim 10, characterized in that the control device ( 52 ) is associated with a safety device ( 53 ) by which the removal of energy from the respective power dispenser ( 1 ) can be released only upon acceptance of further identification information, if at the same time the control device ( 52 ) is activated by accepting the magnetic card. 12. Power charging system according to one of the preceding claims, characterized in that the central terminal ( 41 ) has a computing device nachgeord designated printer device ( 56 ) for outputting a protocol document on the charging process after completion. 13. Power charging system according to claim 12, characterized in that the central terminal ( 41 ) one of the computing device and / or the printer device ( 56 ) upstream storage unit for storing the data required for billing or identification data of the respective user, such as customer name and number, as well as the date and time of the energy extraction process and the amount of energy delivered, for example in kWh. 14. Electricity charging system according to one of the preceding claims, characterized in that the central terminal ( 41 ) has a display ( 59 ) for the individual operations of the respectively selected power dispenser ( 1 ), which preferably via LED display ( 59 a) shows at least the last operating step and announces the next operating step to be carried out. 15. Electricity charging system according to one of the preceding claims, characterized in that by the each safety device ( 46 ) associated safety device ( 60 ) draw energy from the associated power dispenser ( 1 ) only if there is an unauthorized actuation from the closing operating state, such as When the closed position of a compartment of the stand ( 3 ) covering the plug-in region of a connection cable fixed to the vehicle, the pivot door ( 15 ) covering the same can be released. 16. Power charging system according to one of the preceding claims, characterized in that the energy extraction at the assigned power dispenser ( 1 ) can be blocked by the safety device ( 67 ) assigned to each interface device ( 46 ) in the event of malfunctions such as, for example, an overcurrent . 17. Power charging system according to one of the preceding claims, characterized in that the predetermined safety device ( 68 ) associated with each interface device ( 46 ) currents when errors occur, predetermined minimum current, such as leakage currents on the outer surface of the connecting cable, the energy consumption at the associated Electricity dispenser ( 1 ) can be locked.