EP2488387A2

EP2488387A2 - Method and device for controlling the authorization of charging processes of electrically powered vehicles

Info

Publication number: EP2488387A2
Application number: EP10771382A
Authority: EP
Inventors: Bernd Lutz; Nico Bannow; Tobias Kirchner
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2009-10-16
Filing date: 2010-10-08
Publication date: 2012-08-22
Also published as: CN102548791B; JP5619170B2; WO2011045249A3; WO2011045249A2; JP2013507902A; US20120150360A1; DE102009045756A1; US9168842B2; CN102548791A

Abstract

The invention relates to a method for controlling the authorization of charging processes of electrically powered vehicles. According to the invention, a control unit is provided between a main connection and a plurality of charging outlet connected to the control unit by means of a power line. A vehicle to be charged is connected to one of the charging outlets, and the total charge current fed from the main connection to the charging outlets via the control unit is captured. Charging power requests are transmitted from each of the vehicles connected to the charging outlets to the control unit, and the entire charging current is compared to the sum of charging currents reported by the vehicles connected to the charging outlets. The charging outlets are switched off if the total charging current exceeds the sum. Connecting a vehicle to be charged comprises transmitting authorization information from the vehicle to the control unit. The authorization information is compared by the control unit to a list of authorized vehicles in order to check the authorization of the vehicle. Transmitting charging power requests and authorization information is provided by modulating an alternating current signal on the power line, wherein the alternating current signal reflects the authorization request or the charging power request. The invention further relates to a control device for performing the invention.

Description

Description title

Method and device for controlling the authorization of charging processes of electrically operated vehicles

Technical area

The invention relates to a method and apparatus for controlled charging of electrically powered vehicles, and more particularly to a mechanism for blocking charging without authorization.

Electrically operated vehicles, i. Hybrid vehicles and electric vehicles are stored by electric accumulators which store traction energy for the vehicle. In order to supply the vehicle with new traction energy, it is possible to replace an empty accumulator of the vehicle with a new one, but this is associated with a complex exchange process and results in further problems with the vehicle-related maintenance of the accumulators.

Furthermore, it is known that electrically powered vehicles can be charged without additional control sockets of a conventional network, but the power outlet must be secured to protect against unauthorized energy withdrawals, for example by the socket is provided in a lockable space. However, this type of access control is not practical in mobile applications and is therefore associated with difficulties in setting up a charging power supply network.

The ability to provide individual sockets with individual switching modules for autonomous access control, even perform authorization queries, requires a lot of effort, since each outlet must be modified individually. It is therefore an object of the invention to provide a method and a device with which a controlled charging of electrically operated vehicles can be realized, without resulting in a high installation and hardware costs.

DISCLOSURE OF THE INVENTION This object is achieved by the method according to claim 1 and the control unit according to claim 6.

The concept underlying the invention is to centrally provide a control unit that controls a plurality of charging sockets. As a result, a plurality of charging sockets can be controlled by a single control unit, without any modification of all charging sockets is necessary. This makes it possible to easily retrofit existing socket networks, for example in an underground garage, which are connected via a common line to a main terminal, which is provided, for example, by a fuse box. Between this main terminal, i. between the

Fuse box and the following socket network, the control unit according to the invention is provided, which thus controls the flow of current between the main terminal and all subsequent charging sockets. In order to be able to individualize the vehicles or the consumers at the individual sockets, data is transmitted via the existing socket network. Such

Transmission is known, for example, from carrier frequency systems, which are also called powerline systems, and in which existing, provided for power lines are also used for data transmission. The data transmission is provided by modulating an AC signal to the voltage in the power cable, the modulated

AC signal has a significantly higher frequency than the AC supply current of the power line, so that can be separated by frequency separation of the data channel logically from the power supply. In principle, all normalized or non-normalized transmission techniques can be used, which use a power line for data communication by modulating an AC signal. According to the invention, an individual authorization control of the individual vehicles or consumers is provided by the communication, which is provided by the power line, which is evaluated by the control unit, which in case of lack of authorization connected vehicles from

Network takes. The polling of individual consumers at the individual outlets may be provided by push or pull traffic, i. by a request from the control unit to which the vehicles respond (pull operation) or by an autonomous transmission of the vehicle by authorization data during connection (push operation).

The invention makes it possible to detect in a simple manner whether all vehicles connected to the power line are authorized to collect electricity. If at least one vehicle is detected as unauthorized, the control unit may switch off the entire power line and thus all charging sockets, at least for a period of time, so as to deny access to unauthorized users. For this purpose, authorized vehicles transmit the requested charging current via the data transmission described above (using the power line) to the control unit. The control unit thereby has the overview of the sum of all requested or received charging currents. At the same time, the control unit can detect the power actually delivered to all charging sockets or the associated current, and compare the sum of the charging currents formed with the actually measured total charging current. If the actual, measured total charging current is higher than the sum of the transmitted charging current amounts, then the control device either switches all

Sockets or switches off individual sockets or causes individual vehicles to interrupt the charging process to compare unauthorized vehicles with the sum of the reported (and after shutdown updated) charging current amounts by re-recording the actual total charging current. As a result, an unauthorized vehicle can be detected by a single, requested shutdown.

According to the concept underlying the invention, the control unit therefore comprises a breaker for switching off the sockets, if necessary, and a communication unit with which the individual charging current amounts or

Authorization information can be received from the vehicles or on this can be sent. For individual shutdown, the communication device is also equipped to transmit shutdown commands to the individual vehicles individually. The control unit according to the invention further comprises a data processing device which is set up for the summation of the reported charging current amounts, and a current measuring unit which detects the total charging current in order to compare the sum of the reported amounts with the actual total charging current detected. The result of the comparison is reported to the data processing unit, which accordingly activates the interrupter or also sends individual interrupt signals individually to the vehicles via the communication unit.

The concept underlying the invention is implemented by the following methods, devices and their embodiments. The method according to the invention for controlling the authorization of charging processes of electrically operated vehicles therefore provides for a control unit to be provided between a main connection and a plurality of charging sockets which are connected to the control unit via a power line. In particular, electric vehicles and hybrid vehicles are referred to as electrically powered vehicles. The main connection can be provided, for example, by a fuse box and forms the root of the network, while the

Power line represents a spur line, which connects the individual charging sockets with the main terminal and thus supplied with power.

A vehicle to be charged is connected to one of the charging sockets, for example by connecting a charging connection of a vehicle to the charging socket via a charging cable. The total charging current, which is conducted from the main connection via the control unit to the charging socket, is detected. In particular, the total charging current is detected, which is transmitted via an interrupter unit of the control unit. Since essentially the same voltage can be assumed in power supply networks, the terms current and power are to be regarded as equivalent descriptions of the energy transmission. The total charging current can in particular be detected by means of a shunt resistor, ie by a voltage dropping across a series resistor or by magnetic field measurements from which it is possible to deduce the current flow, for example by means of Hall sensors or induction coils. Charging power requests are transmitted from each vehicle to the control unit connected to the charging sockets. Preferably, with each connection of the vehicle to be charged with a charging socket, a charging current request takes place so as to register a new vehicle with the control unit. In addition, charging current requests from already connected vehicles are regularly transmitted to the control unit in order to keep them up to date. The charging current requests can be requested by the control unit (pull operation) or can be proactively transmitted from the vehicle to be connected to the control unit (push operation). The charging current requests may be based on estimated charging current values or desired charging current values provided by a charging control of the vehicle, or may be measured charging current values that measures a charging control of a vehicle.

In order to check the eligibility of all connected vehicles, the total charging current (i.e., the real total detected charging current) is compared with the sum of charging currents transmitted or transmitted from the vehicles connected to the charging sockets to the control unit. The charging currents of the vehicles are represented by the charging current requests. As charging current requests are requests that are transmitted from the vehicle to the control unit to tell which charging current is currently requested by the individual vehicles or is requested. The charging power requests therefore concern charging currents received by the vehicle. Preferably, there is initially no charging current request to supply a vehicle with charging current, but rather each charging socket provides the electrical power, wherein after the start of the provision, the authorization is queried and, if necessary, measures are taken. Such a measure provides for switching off charging sockets when the

Total charging current exceeds the sum. In particular, all charging sockets are switched off. Alternatively, only individual charging sockets are switched off, but this requires an additional switching module to each charging socket. In addition, by transmitting control information from the control unit to the vehicle, this can stop the charging process, so that a

Removal of electrical power from the charging socket by the driver zeugs is terminated at least temporarily due to the control command of the control unit. Such a temporary termination of the charging process of the vehicle allows the identification of unauthorized vehicles, after it has been detected that at least one unauthorized vehicle is connected to the power line.

Linking a vehicle to be charged includes transmitting authorization information from the vehicle to the control unit (either proactively or as requested by the control unit). The authorization information is compared by the control unit with a list of authorized vehicles. This comparison also includes a comparison of the authorization information with stored credentials, such as credit card numbers, cell phone numbers, charge subscription identifiers, prepaid account identifiers, or other entitlement or payment information. Since these proofs are linked to the vehicle, for example via the driver of the vehicle, such credentials are maintained in the form of a list of authorized vehicles. The entries in the list of authorized vehicles are therefore not only direct identifications of vehicles (for example their license plates), but also include proof that the driver of the vehicle or drivers of the vehicle provide in the form of a general proof of entitlement. The comparison verifies the vehicle's entitlement (ie, in general, that the credential is checked to see if it is correct or not). The transmission of the charging current requests (ie the information about the currently received charging current) and the transmission of authorization information is provided via a wired transmission channel provided by the power line, ie in particular by modulating an AC signal onto the power line, wherein the AC signal is the authorization request or the charging current request. The transmission can also be coded or provided via a security protocol. If no secure connection can be established with the vehicle, it is assumed that the vehicle is not authorized, and the measures described above are performed, so that a shutdown step described here is carried out in this case. The step of transmitting authorization information is provided by transmitting a credential from the vehicle to the control unit, ie, proactively or on demand by the control unit. Further, the step of transmitting is provided by transmitting a request for a credential from the control unit to the vehicle, which corresponds to the pull operation. The vehicle then transmits the credential on the basis of the request for the credential of the control unit, which corresponds to an answer within the pull operation.

The authorization information may include payment information, wherein the control unit checks whether the payment information can be posted. The authorization can therefore be provided by transmitting payment information, for example a credit card number, whereby an authorization is issued when it is detected that the payment information can be posted. In this context, a list of authorized vehicles is to be understood not only to mean only identifications of the vehicles themselves, but also payment information which is linked to the vehicle via the holder or the driver of the vehicle. By transmitting valid payment information, the vehicle is entitled. In general, the control unit preferably maintains a list showing not only the requested or extracted charging currents, but also identification marks of the vehicles associated with each charging current amount and linked together in the list together with the charging current amount. The identification can be an actual serial number, or can also be provided by a mere Durchnum- ration of the connected vehicles, this numbering, for example, by the order of the initial connection results. In particular, the identification of the vehicle merely includes an identification that is unique to all the connected vehicles but may be ambiguous to the group of vehicles that are connected and that are not connected (but have been connected in the past). In a particularly simple embodiment, the identification marking, which is provided together with the associated charging current value, may be predetermined by the location within a list in which the charging currents (or their values) are represented. The ith charging current input thus corresponds to the vehicle with the identification mark i. The charging current requests are transmitted repeatedly or periodically from the vehicles to the control unit. Either these repetitive or periodic requests are proactively transmitted autonomously by the vehicle to the control unit within the framework of a push procedure, or are sent individually, repeatedly or intermittently in response to repeated or periodic requests from the control unit, which corresponds to a pull operation. This repeated or periodic transmission can be provided with a fixed time grid, whereby a substantially continuous monitoring results. For example, every second or every minute or every quarter of an hour

(or any other predetermined amount of time) the process is repeated. In the same way, preferably also the authorization information is repeated or interrogated periodically or transmitted from the vehicles to the control unit, the authorization information can be transmitted with the same time pattern as the charging current requests, preferably in a common message, or wherein the authorization information offset or with a lower frequency can be transmitted from the vehicles to the control unit. The transmission of the charging current requests, the authorization information or the above-mentioned message from the vehicles to the control unit may be a proactive transmission as part of a push operation, or may be a response to a corresponding request by the control unit as part of a push operation , In particular, the authorization information is queried when it has been detected that the total charging current exceeds the sum, or when all charging sockets, at least one charging socket or only one charging socket is switched off.

As a mechanism for preventing unauthorized charging, the method provides shutdown mechanisms or polling mechanisms that are performed when the total charging current exceeds the sum. These mechanisms are provided in particular as follows. On the one hand, all charging sockets in front of the control unit can be switched off at least for a predetermined period of time if the total charging current exceeds the sum. The predetermined period of time may be a fixed period, for example one minute or five minutes. Alternatively, all charging sockets can be switched off by the control unit and remain switched off until the control unit is added or receives a corresponding signal. If all charging sockets for one predetermined period of time are switched off, so preferably at power-up at the end of the predetermined period of time, the above-written authorization query and the transmission of charging current requests are performed. When restarting after the predetermined period of time, all measures are thus carried out that are carried out when connecting a vehicle to be charged with one of the charging sockets. This applies in particular to the entire authorization query and control as well as the transmission of the charging current request. According to a further embodiment it is provided that the control unit

Loading processes of vehicles completed individually. In this case, the control unit transmits shutdown commands individually to the vehicles, wherein the vehicles interrupt the charging process upon receipt of the shutdown commands. The control unit performs the comparing step after each interruption or every transmission of the shutdown command. In the comparison, the reported

Charging current of the disconnected by the shutdown command or disconnected vehicle deducted from the sum of all reported charging currents. Thus, the thus corrected sum corresponds to a setpoint, which reflects all reported charging currents. If the detected charging current exceeds this corrected sum, then it can be assumed that an unauthorized vehicle has a

Charging provides, or the vehicle does not respond correctly to the shutdown command, and thus loses the right.

Due to the individual shutdowns, the control unit determines at least one vehicle by comparing the total charging current with the sum of the reported charging currents (in particular with the corrected sum), which receives charging current from the charging socket despite the absence of authorization or received switch-off command. The control unit causes a signal output of this at least one vehicle, if this reacts to it, to make the unauthorized vehicle from the outside by the signal output. Alternatively, the control unit switches off by transmission of an interrupt signal to a switching module of the charging socket, which at least one vehicle is connected to this charging socket, which receives charging current from the charging socket despite lack of authorization or despite received shutdown command. According to a further embodiment, the control unit determines at least one vehicle due to the individual shutdowns by comparing the total charging current with the sum of the reported charging currents, which is authorized for current consumption. The individual shutdowns and the associated comparison processes are preferably used to determine all vehicles which are connected and have authorization to charge and to respond to the shutdown command by interrupting the charging process. These determined, authorized vehicles are caused by the control unit by a signal output command to perform a signal output. In this way, all vehicles are identified from the outside by the signal output, which have an authorization. In contrast to the method described above, in which only unauthorized vehicles are caused to signal output, according to the embodiment described here, all other vehicles are identified by all authorized vehicles output a signal that is visible from the outside.

As a signal output, in particular, the control of the turn signal lights, a driving light or actuation of the horn for a short period of time, for example, 5 seconds is suitable.

The invention further provides a control unit with a main supply connection, a delivery connection, an interrupter unit and a communication unit. The main supply connection is designed to be connected to a central power supply connection, which may also be referred to as the main connection. The dispensing port is configured to forward the main port power and to be connected to a power line for the controlled supply of a plurality of charging sockets (connected to the power line). The interrupter unit is connected between the main supply terminal and the output terminal. A current measuring unit of the control unit is connected to the main supply terminal, discharge terminal or in-between to detect the current flowing through the control unit. The communication unit is connected to the output port to set up another logical channel for the power line. For this purpose, the communication unit comprises a demodulator as well as a modulator in order to transmit and receive data via modulated signals via the output connection and a connectable power line. The control unit further comprises a data processing unit that implements various control mechanisms. This is connected to the communication unit in order to store charge current information of charging current requests, which are sent to the communication unit, in a charge current storage memory via these and via the output connection. As a result, the data processing unit can store all the individual charging currents as communicated by the connected vehicle. Further, the data processing unit, for example by means of a summer, set up to sum the charging current information and thereby detect the sum of the charging currents of the vehicles, which are connected to the charging sockets, which in turn on the

Power line can be connected to the output port. In addition, the data processing unit is set up, for example by means of a comparator, to compare this sum with the total current detected by the current measuring unit. This comparator or the data processing unit thus provides a decision-making entity which detects impermissible current decreases and then takes measures. In particular, the interrupter unit is triggered by the data processing unit as a measure by sending an interrupt signal when the data processing unit determines by comparison that the sum of the reported current draws (i.e., the charge current indications and their charge current specifications) exceeds the total output current.

In addition, the data processing unit is arranged to receive (or request) authorization information from the vehicles to evaluate and verify the authorization. To this end, authorization information transmitted from the vehicles via the power line connectable to the output terminal is sent to the output terminal, and the data processing unit connected to the output terminal via the communication unit evaluates the received permission information. For this purpose, the authorization information is verified by comparing it with a list of authorized vehicles. The list of authorized vehicles can be reproduced not only by a vehicle identification itself, but also by payment or subscription information that authorizes the purchase of electricity. In this case, the list is stored in a memory of the control unit or of the data processing unit. Alternatively, the list may be maintained in a remote authorization retrieval system, in which case the Control unit further comprises a remote transmission interface to send information, and in particular the authorization information via the remote transmission interface to a connectable authorization query system. The remote transmission interface can in particular be provided by an Internet connection, for example via a WLAN access point, or a radio-network-based Internet connection such as via GPRS and WAP. In particular, the long-distance transmission interface can be provided for the types of transmission described above, for example as a WLAN radio module or as a mobile radio network module, or also as a powerline module which is set up to connect the control unit to the Internet via a mains supply based transmission protocol via the main supply connection connect.

According to a further embodiment of the invention, the data processing unit is set up, together with the communication unit connected thereto, to receive authorization information in the form of a credential from the vehicle via the delivery connection. Furthermore, the data processing unit is set up to compare the credential with the list and thus to verify the credentials. The proof of entitlement can basically be proactively transmitted by the vehicle or transmitted to the request by the control unit. Therefore, the data processing unit is also arranged to send authorization information in the form of a request for a credential to the vehicle via the dispensing terminal, or is arranged to both send the request of the credential to the vehicle and to receive the credential from the vehicle via the dispensing terminal.

In accordance with a further embodiment, the data processing unit, together with the connected communication unit, is set up to receive payment information within the authorization information via the delivery connection. In this case, the data processing device does not process a credential itself, but sees valid payment information as equivalent to a credential. Therefore, the data processing unit, along with the remote transmission interface connected thereto, is arranged to send a remote query to a remote accounting database and is further arranged to provide bookability confirmation via the remote transmission interface from the booking database received, wherein upon receipt the bookability confirmation is regarded as a verified credential from the data processing unit and then the associated charging current request is included in the sum of the charging currents. Alternatively, the booking database may be provided within the control unit. Other possibilities are prepaid constructions in which the authorization information in the form of an available amount of money (or a power equivalent) is sent from the vehicle to the data processing unit, which then evaluates the amount of money and, for example together with a maximum duration, the associated vehicle as entitled in a memory of the control unit stores.

The data processing unit, together with the communication unit connected thereto, is also set up to repeatedly or periodically send a charging current request via the delivery connection to the vehicles. Further, the data processing unit is arranged together with the communication unit to receive an associated charging current amount response via the output terminal of the vehicles. The data processing unit is configured to update charging current entries in the charge current storage according to the charging current amount response. The charging current amount storage is provided in the control unit or as part of the data processing unit as a read / write memory. This can be non-volatile or volatile.

According to a further embodiment, the data processing unit is set up to send an interruption signal to the interrupt unit for a predetermined period of time when the data processing unit determines that the

Sum exceeds the total output current. Furthermore, the data processing unit can be set up to transmit an interrupt signal or a signal output command via the output connection to the vehicles or to switching modules of the charging sockets individually for a predetermined period of time or continuously. By this combination of the data processing unit and the interrupter unit via the interrupt signal, a locking mechanism is provided which prevents the loading of unauthorized vehicles. In the same way, a mechanism can be provided by the interrupt signal via the output connection, which interrupts individual vehicles at least temporarily in their charging process, in order to detect by the individual check which of the vehicles is not responsive to the interrupt signal. Acts and / or has no authority to receive charging current. Alternatively, the charging sockets may be provided with switching modules that implement the interrupt signal, wherein it is provided with regard to the control unit for this purpose that the data processing unit is set up to control these charging sockets via the output connection as a data transmission interface. To provide the predetermined amount of time, the control unit may include a timer that determines the time duration. Likewise, the control unit may include a timer that repeatedly or periodically sends the charging current request to vehicles.

Brief description of the figure

FIG. 1 shows a block diagram for a more detailed explanation of the invention, including an embodiment of the control unit according to the invention.

Detailed description of the drawing

FIG. 1 shows a control unit 100 according to the invention within a conventional environment. The components shown for the control unit according to the invention are shown by solid lines, the components of the usual operating environment are shown in dashed lines. All three-digit reference numbers refer to components of the control unit according to the invention, and all two-digit reference numbers refer to components of the environment in which the control unit is used, and which are not part of the invention, but are helpful for the further explanation of the invention. The control unit 100 comprises a main supply terminal 110 and an output connection 120 and an interrupter unit 130 connected therebetween. Finally, the control unit 100 according to the invention comprises a communication unit 140, which in turn is connected to the output terminal 120 for modulation of an alternating current signal. The connection between communication unit 140 and output port 120 is represented by arrows representing bidirectional data traffic, the connection being set up for data transfer only. Further connections, which are set up only for data transfer, are shown in FIG. 1 with arrows. The arrows give the Data transmission direction. Connections that do not have arrows are connections for transmitting electrical power.

The control unit further comprises a current measuring unit 150, which detects the current flow of the dispensing terminal 120 and sends it in the form of a data signal to a data processing unit 160 of the control unit. The communication unit 140 further comprises a demodulator and a modulator for transmitting data in both directions, wherein neither modulator nor demodulator are shown in FIG. The data processing unit 160 is further connected to a memory 170 in which, among other things, charging current data are stored, which were received via the communication unit 140 from the dispensing terminal 120 and transmitted to the data processing unit 160. The data processing unit further comprises signal generators for generating corresponding data signals, a comparator and a summer, which however are not shown in detail for reasons of simplicity. These components may also be provided by software that drives a programmable processor that implements these components along with the software. In the same way, the associated software pieces represent implementations of the corresponding method steps.

The data processing unit 160 is further connected to drive the interrupter unit 130, wherein an interrupt signal is sent from the data processing unit 160 to the interrupter unit 130 when it is detected that the actually output total current detected by the current measuring unit 150 exceeds the sum of all charging current data that in the

Memory 170 are stored.

The main supply terminal 110 is set up to be connected to a utility network 20 via a cable connection terminal 10. According to the invention, electrical power of the supply network 20 is delivered by the control unit according to the invention to the output connection 120 of the control unit 100. The discharge port 120 is further configured to be connected via an electrical connection 30 to a power line 40 to which a plurality of charging sockets 50 are connected. The charging sockets 50 themselves are optionally connected to vehicles, in particular with charging controls 60 of the vehicles according to the invention via the power line Use 40 discharged power for charging. Furthermore, the charging controllers 60 are configured to transmit authorization information as well as charging current requests via the sockets 50 to the power line 40. Because the exhaust connection 120 is connectable to the power line 40, the signals sent by the charging controls 60 of the vehicles can be detected within the control unit 100 according to the invention by first being demodulated by the communication unit 140 and then being demodulated via a data connection the data processing unit of the control unit 100 are transmitted.

Claims

claims

1 . Method for controlling the authorization of charging processes of electrically operated vehicles, comprising the steps of:

Providing a control unit (100) between a main terminal (1 10) and a plurality of charging sockets (50) which are connected via a power line (40) to the control unit (100);

Connecting a vehicle (60) to be charged with one of the charging sockets (50);

Detecting a total charging current conducted from the main terminal (110) via the control unit (100) to the charging sockets (50);

Communicating charging current requests from each of the vehicles connected to the charging sockets (50) to the control unit (100);

Comparing the total charging current with the sum of the charging currents of the vehicles connected to the charging sockets (50); and switching off the charging sockets (50) when the total charging current exceeds the sum, wherein

connecting a vehicle to be charged comprises a step of transmitting authorization information from the vehicle (60) to the control unit (100) and comparing the authorization information from the control unit with a list of authorized vehicles to verify the authorization of the vehicle, and wherein transmitting Charging current requests and authorization information is provided by modulating an AC signal on the power line (40) representing the entitlement request or the charging power request.

2. The method of claim 1, wherein the step of providing authorization information is provided by transmitting a credential from the vehicle to the control unit by transmitting a request for a credential from the control unit to the vehicle. , or both.

3. The method according to any one of the preceding claims, wherein the authorization information comprises a payment information, wherein the control unit (100) checks whether the payment information can be booked. Method according to one of the preceding claims, wherein the charging current requests during the charging process are transmitted repeatedly or periodically from the vehicles (60) to the control unit (100) and reflect a charge current amount requested by the vehicle (60) or from the vehicle (60) the charging socket (40) is received.

Method according to one of the preceding claims, wherein when the total charging current exceeds the sum,

(A) all charging sockets (40) are turned off by the control unit (100) at least for a predetermined period of time, or

(b) the control unit transmits shutdown commands to the vehicles (60) individually, the vehicles (60) interrupt the charging process upon receipt of the shutdown commands; the control unit (100) performs the step of comparing after each interruption, wherein the reported charging current of the vehicle (60) turned off by the shutdown command is subtracted from the sum; and

(i) the control unit (100) determines at least one vehicle (60) by comparing the total charging current with the sum of the reported charging currents, which receives charging current from the charging socket (50) despite lack of authorization or received switch-off command due to the individual shutdowns, and the control unit (100) 100) causes a signal output of this at least one vehicle (60) or the charging socket (50) to which the at least one vehicle is connected by switching off an interrupt signal to a switching module of the charging socket (50) turns off, or

(ii) the control unit determines, based on the individual shutdowns, at least one vehicle (60) by comparing the total charging current with the sum of the reported charging currents, which is entitled to draw current and interrupts the charging process due to the received shutdown command, and the control unit initiates a signal output of that vehicle , Control unit for controlling the authorization of charging operations of electrically operated vehicles, comprising:

a main supply terminal (110), a discharge terminal (120), an interrupter unit (130) connected therebetween, and a communication unit (140), the control unit (100) further comprising a current measuring unit (150) for detecting the total current output at the output terminal, and the communication unit (140) is connected to the output port (120) and includes a demodulator and a modulator for receiving and transmitting data from the output port as modulated signals;

wherein the control unit further comprises a data processing unit (160) which is connected to the communication unit (140) and which is adapted to charge current information in charging current requests, which are transmitted with the modulated signals from the vehicles, in a charging current reserve (170) of the control unit (16). 100) and comparing the sum thereof with the total current output at the output terminal, wherein the data processing unit (160) is arranged to open the interrupt unit (130) when the sum exceeds the total current output; and

wherein the data processing unit (160) is further configured to receive and compare authorization information with a list of authorized vehicles either stored in a memory (170) of the control unit or via a remote transmission interface for transmitting the authorization information to a remote authorization inquiry system which leads the list.

A control unit according to claim 6, wherein said main supply terminal (110) is adapted to be connected to a main terminal (10), said interrupt unit (130) is connected between said main supply terminal (110) and said output terminal (120), and said output terminal (120). is arranged to be connected to a power line (40) for the controlled supply of a plurality of charging sockets (50) connected to the power line;

the demodulator enables the communication unit to receive modulated signals applied to the output port, and the modulo tor enable the communication unit to transmit data as modulated signals via the output port;

the data processing unit (160) is configured to sum the charging current data, the charging current data to be summed up by the data processing unit (160) originating from different vehicles connected to charging sockets connectable to the dispense port (120);

the data processing unit (160) is connected to the interrupter unit (130) and is arranged to deliver an interrupt signal to the interrupter unit when the data processing unit (160) determines that sum exceeds the total output current; and the data processing unit (160) is further configured to receive the authorization information via the remote transmission interface.

Control unit according to claim 6 or 7, wherein the data processing unit (160), together with the communication unit (140) connected thereto, is arranged to receive authorization information in the form of a credential from the vehicle via the delivery port (120) and to compare it with the list, or is arranged to send authorization information in the form of a request for a credential to the vehicle via the dispensing port (120), or both.

Control unit according to claim 6, 7 or 8, wherein the data processing unit (160), together with the communication unit (140) connected thereto, is arranged to receive payment information within the authorization information via the delivery port (120) and wherein the data processing unit (160) with the remote communication interface connected thereto is arranged to send a remote inquiry to a remote booking database and to receive from the booking database an accounting service via the telecommunications interface.

The control unit according to claim 6, wherein the data processing unit is set up, together with the communication unit connected thereto, repeatedly or periodically. via the dispense port (120) from the vehicles (60), the data processing unit is further configured to load charge current entries in the charge current reserve (170) according to the charge current amount. Update answer. The control unit of claim 6, wherein the data processing unit is configured to send an interrupt signal to the interrupt unit for a predetermined period of time when the data processing unit determines that the total exceeds the total current output, or wherein the data processing unit sets up is to transmit an interrupt signal or a signal output command via the output terminal (120) to the vehicles or to switching modules of the charging sockets individually for a predetermined period of time or continuously.