Charging cable, charging plug, charging station and charging arrangement for charging an electric vehicle and method for forming an electrical connection between a charging station and an electric vehicle

Abstract

Charging cable (2) for charging an electric vehicle, wherein the charging cable (2) is or can be connected to a charging station (5) on the infrastructure side (4), comprising: at least one DC line strand (6) for transmitting a direct current and / or at least one AC line strand (7) for transmitting an alternating current, and at least one protective conductor (8), wherein the charging cable (2) has a standardized coupling interface (11) on the vehicle side (10), on which a replaceable charging plug (3) with a complementarily designed standardized coupling interface (13) can be arranged and connected to it in a detachable manner, wherein the unified coupling interface (11) has at least one locking means (18) which can be releasably locked with at least one complementary locking means (19) of the charging plug (3), and wherein the at least one locking means (18) can be locked and / or unlocked in a controlled manner.

Description

The invention relates to a charging cable, a charging plug, a charging station and a charging arrangement for charging an electric vehicle. The invention further relates to a method for forming an electrical connection between a charging station and an electric vehicle.For charging an electric vehicle, the electric vehicle has to be driven to a charging station and an energy store of the electric vehicle has to be electrically connected to the charging station. The energy store can then be charged by means of a charging current provided by the charging station. To form an electrical connection between the charging station and the electric vehicle, a plurality of standardized electrical interfaces exist. For charging with an alternating current via an AC charging cable, there are the charging plug types type 1, type 2 and GB / T AC (GB / T 20234.2), for charging with a direct current via a DC charging cable, there are the charging plug types CCS type 1, CCS type 2, GB / T DC (GB / T 20234.3-2015) and CHAdeMO. Thus, altogether there are seven incompatible standards. This complicates the construction of a charging infrastructure for electric vehicles.DE 10 2015 206 047 A1 discloses a charging plug adapter for charging an electric vehicle with a CCS system via a charging station with a CHAdeMO system.Furthermore, a charging plug adapter is known from DE 10 2017 210 808 A1, in which a charging plug type CCS type 2 provided for DC charging can be adapted to a plug type 2 suitable for AC charging, wherein the DC line can be used for charging by means of an alternating current.Furthermore, a replaceable plug and a kit of parts for electrically charging a vehicle across countries are known from DE 10 2013 007 330 A1. The removable plug comprises a cable-side receptacle, an infrastructure-side receptacle, a housing and a control device arranged in the housing for checking and / or ensuring a proper charging operation. The cable-side receptacle and the infrastructure-side receptacle are arranged on the housing for contacting the removable plug. Depending on requirements, a country-specific connection element can be connected to the infrastructure-side receptacle.WO 2015 / 084 106 A1 discloses a charging device for an electric vehicle, comprising a hybrid charging device and a connector arrangement. The hybrid charging apparatus includes a control circuit installed in a charger main body, the control circuit including a switching device for selecting a DC power supply and an AC power supply for DC fast charging and AC fast charging, and a communication module for detecting the charging and the power consumption and then notifying a supplier of the charging and the power consumption by wire or wirelessly; and a key control unit installed outside the charger main body in an exposed state, wherein the key control unit is electrically connected to the control circuit to select the DC power supply or the AC power supply. The connector assembly is electrically connected to the control circuit, the connector assembly comprising: a first connector integrally formed with a body; a second connector having a first connector coupler connected to the first connector and integrally formed in the rear thereof; and a third connector having a second connector coupler connected to the second connector and integrally formed in the rear thereof.CN 1 09 149 255 A discloses a charging adapter and a vehicle having such a charging adapter.WO 2011 / 098 116 A1 discloses an adapter for connecting an electrical consumer to a charging station of a power network, for identifying the consumer and for incorporating the consumer into a regulating network, wherein the adapter is formed separately from the consumer and separately from the charging station. The adapter comprises at least one charging station connection, by means of which a releasable, energy-transmitting connection of the adapter to the charging station can be produced by a user of the adapter; at least one consumer connection, by means of which a releasable, energy-transmitting connection of the adapter to the consumer can be produced by a user of the adapter, a switch integrated in the adapter, which can be switched at least between an ON state and an OFF state, wherein when the switch is in the ON state there is an energy-transmitting connection between the charging station connection and the consumer connection, and wherein the energy-transmitting connection between the charging station connection and the consumer connection is modified compared to the ON state in the OFF state of the switch, a consumer identification device which is designed to connect the charging station connection to the consumer connection, identifying the load and associating a load identifier with the identified load, a rule network communication device configured to send the load identifier to the rule network and receive instructions from the rule network, and a transaction control / rule device configured to switch the switch according to the instructions of the rule network.DE 11 2013 006 901 T5 discloses an inter-protocol charging adapter for a device to be charged via a bus. It includes first terminals conforming to a first charging protocol that requires the bus to be powered before the device is connected to the bus; second terminals conforming to a second charging protocol that does not power the bus before the device is connected to the bus; and a boost converter coupled to the bus and to at least one of the second terminals, the boost converter using power from the second terminal to power the bus before the device is connected to the bus.US 2014 / 0 035 527 A1 discloses a kit or system for portable electric vehicle supply devices (EVSE). This comprises a docking connector having a docking head that can be engaged with the charging connector of an electric vehicle, and a barrel or handle attached to the docking head and an electrical connector for the barrel. An EVSE controller is embedded in the docking port. A power cord has a first plug for engaging the electrical plug of the barrel and a second plug at an opposite end of the cord for connection to a socket. The embedded EVSE controller allows the docking port to function as an EVSE unit.DE 10 2018 100 827 A1 describes a charging cable for an electric car with the following features: the charging cable comprises an insulation body, a plug connector with contact pins and contact openings as well as a connecting line; and the plug connector connects the insulation body via the contact pins and contact openings detachably to the connecting line. Furthermore, a corresponding charging station is described.DE 10 2017 115 284 A1 describes a charging arrangement for an electric vehicle having a traction battery, having a voltage supply station, connected to a voltage network, and a voltage supply cable having a charging plug, wherein, in order to carry out a charging process, the charging plug is connected to the electric vehicle, wherein a voltage converter for converting the supply voltage into a relatively lower charging voltage is arranged in the charging plug, and a method for operating the charging arrangement.Charging at charging stations via different standardized electrical interfaces is currently only solved in an unsatisfactory manner.The object of the invention is to create a charging cable, a charging plug, a charging station and a charging arrangement for charging an electric vehicle and a method for forming an electrical connection between a charging station and an electric vehicle, in which the charging can be carried out in an improved manner via different standardized electrical interfaces on the electric vehicle.The object is achieved according to the invention by a charging cable having the features of claim 1, a charging station having the features of claim 4, a charging plug having the features of claim 6, a charging arrangement having the features of claim 7 and a method having the features of claim 5. Advantageous embodiments of the invention are evident from the dependent claims.In a first aspect of the invention, in particular a charging cable for charging an electric vehicle is provided, wherein the charging cable is or can be connected to a charging station on the infrastructure side, comprising at least one DC line section for transmitting a direct current and / or at least one AC line section for transmitting an alternating current and at least one protective conductor, wherein the charging cable has a unified coupling interface on the vehicle side, on which interface a replaceable charging plug having a complementarily configured unified coupling interface can be arranged and connected to the latter in a detachable manner.In a second aspect of the invention, in particular a charging plug for charging an electric vehicle is provided, wherein the charging plug has, on the infrastructure side, a complementarily configured unified coupling interface which can be connected to a unified coupling interface of a charging cable, and wherein, on the vehicle side, the charging plug has a standardized electrical charging interface for connecting to a corresponding standardized electrical charging interface of the electric vehicle.In a third aspect of the invention, in particular a charging arrangement for charging an electric vehicle is provided, comprising a charging cable according to the first aspect of the invention and a charging plug according to the second aspect of the invention.In a fourth aspect of the invention, in particular a method for forming an electrical connection between a charging station and an electric vehicle is provided, comprising the following steps: providing a charging plug depending on a standardized electrical charging interface of the electric vehicle, coupling a complementarily formed standardized coupling interface of the provided charging plug to a standardized coupling interface of a charging cable connected to a charging station, coupling the charging plug connected to the charging cable to the electric vehicle via the standardized electrical charging interface.The invention makes it possible to construct a uniform charging infrastructure. The charging cable comprises at least one DC line section and / or at least one AC line section, so that charging is possible both via a direct current and via an alternating current. The DC and AC line sections can in this case each comprise a plurality of electrical conductors. On the vehicle side, the charging cable has a unified coupling interface, that is to say the unified coupling interface is not fixed or limited to any of the standardized electrical charging interfaces. The charging plug according to the invention is arranged between the charging cable according to the invention and a standardized electrical charging interface on the electric vehicle. A driver of the electric vehicle can carry it along in the electric vehicle, for example, and keep it ready for charging at a charging station. On the infrastructure side, the charging plug comprises a complementarily configured unified coupling interface, via which the charging plug is connected to the unified coupling interface of the charging cable of the charging station. On the vehicle side, the charging plug has a standardized electrical charging interface. The charging plug is connected via the latter to a corresponding standardized electrical charging interface of the electric vehicle.It can be provided that the charging cable comprises at least one DC line section and at least one AC line section.In particular, it can also be provided that, independently of a designation, an AC current is provided via a DC line section or a DC current is provided via an AC line section of the charging cable.The unified coupling interface allows a uniform charging infrastructure to be realized despite a multiplicity of standardized electrical interfaces on the electric vehicles. Each standardized electrical charging interface is provided with a respective charging plug which connects the standardized coupling interface to the respective standardized electrical interface. A charging infrastructure designed in the described manner can be constructed in a simple manner and extended by further standardized electrical charging interfaces. For this purpose, with the charging infrastructure otherwise unchanged, only one further charging plug with a corresponding charging interface has to be provided. This saves costs and increases flexibility.Electrical connections are formed in the charging plug, which connect the DC line section and / or the AC line section and the at least one protective conductor and optionally further lines present to corresponding contacts of the respectively provided vehicle-side standardized electrical charging interface.The charging cable comprises in particular a sheathing and an insulation between the line sections and the other lines. The charging plug comprises in particular a housing.A charging station can be either a device designed independently of other devices, for example a charging column. However, a charging station can also be formed on a building, for example as a so-called "wallbox". The charging cable can be connected to the charging station on the infrastructure side both via a further interface and can be hard-wired to the charging station on the infrastructure side. In particular, the charging station can provide both a direct current and an alternating current with respectively different power for charging, so that charging is possible via the various standardized electrical charging interfaces. Depending on the present electrical charging interface, the current type and the power are then selected and provided.An electric vehicle refers to both a pure electric vehicle and a hybrid vehicle. In particular, an electric vehicle denotes a motor vehicle. However, an electric vehicle can in principle also be another vehicle, for example a commercial vehicle, an electric bicycle or an electrically driven boat, etc.In one embodiment, it is provided that the charging cable has at least one low-voltage line. Via the at least one low-voltage line, a low-voltage supply voltage for electrical consumers arranged in the charging plug can be provided on the infrastructure side. Such a low voltage voltage can be, for example, 12 V or the 5 V usually used in logic circuits.In one embodiment, it is provided that the charging cable has at least one communication line. This allows communication between the charging station and a charging plug arranged on the charging cable and the electric vehicle. In particular, the charging process can be controlled or regulated via the at least one communication line. The at least one communication line in the charging cable can be designed, for example, as an Ethernet connection. Ethernet frames are then exchanged between the charging station or a charging infrastructure and the charging plug via the communication line.It is provided in particular that the at least one communication line or a communication protocol running over it is standardized, that is to say is the same for all charging stations, charging cables and charging plugs, for example the Ethernet protocol.In one embodiment of the charging plug, it is provided that the charging plug has a control device, wherein the charging plug is designed such that a voltage supply of the control device can take place via a low-voltage line provided by a coupled charging cable, and wherein the control device is designed to carry out a conversion between a communication protocol of the charging station and a communication protocol of the electric vehicle. The communication of the control device with the charging station can take place, for example, via the communication line. It can be provided, for example, that the control device converts Ethernet frames of a communication between the charging station and the charging plug into controller area network (CAN) bus frames and vice versa. The charging station can then communicate with the electric vehicle and, for example, regulate a charging process and / or perform a power calculation. The implementation of the communication protocols in the charging plug makes it possible to include existing and future communication protocols, since a correspondingly designed charging plug can be provided and used for each communication protocol used on the vehicle side. An expansion of an existing charging infrastructure is therefore possible without problems.The control device can be designed as a combination of hardware and software, for example as program code which is executed on a microcontroller or microprocessor.In a further embodiment of the charging plug, it is provided that the charging plug has a wireless communication interface via which the control device can communicate wirelessly with the charging station. If a communication line is present in the charging cable, this can additionally be used. However, the communication can also take place exclusively wirelessly.If communication can take place wirelessly, it is possible to provide the charging cable without a communication line. This saves lines and material and the charging cable can be of simpler construction.Before wireless communication can take place between the charging station, the charging plug and / or the electric vehicle, it is provided in particular that authentication of the charging plug and / or the electric vehicle is carried out. For this purpose, the control device is configured to perform such authentication.It is provided that the unified coupling interface has at least one locking means which can be locked in a releasable manner with at least one locking means of the charging plug of complementary design. This enables a secure mechanical connection to be formed and ensured between the charging cable and the charging plug during charging.It is correspondingly provided in the charging plug that the complementarily configured unified coupling interface has at least one complementarily configured locking means which can be locked in a releasable manner with at least one locking means of the charging cable.The locking means can be designed as a locking connection, clamping connection and / or screw connection.It is further provided in an alternative that the at least one locking means can be locked and / or unlocked in a controlled manner. Locking and unlocking is controlled, for example, by the control device. The controlled locking and unlocking then takes place, for example, by means of activated actuators.In another alternative or additionally, it can be provided with the charging plug that the at least one complementarily configured locking means can be locked and / or unlocked in a controlled manner, wherein in particular the control device is configured to perform locking and / or unlocking of the complementarily configured locking means and / or of the at least one locking means on the charging cable. The controlled locking and unlocking then takes place, for example, by means of activated actuators.In one embodiment of the charging plug, it is provided that the standardized electrical charging interface is configured as one of the following: type 1, type 2, CCS type 1, CCS type 2, GB / T or CHAdeMO. Because the charging cable provides both DC and AC line runs, both DC and AC charging can occur via type 1, type 2 and GB / T.Furthermore, a charging arrangement for charging an electric vehicle is provided, comprising a charging cable according to one of the described embodiments and a charging plug according to one of the described embodiments.Furthermore, a charging station for providing electrical energy for an electric vehicle is provided, comprising at least one charging cable according to one of the described embodiments.In one embodiment of the charging station, it is provided that the charging station has a charging plug receptacle in which at least one charging plug according to one of the described embodiments can be mounted. For example, it can be provided to keep a plurality of charging plugs ready at the charging station in the charging plug receptacle. This enables charging of an electric vehicle even in the case where a suitable charging plug is not carried along in the electric vehicle and is kept ready. A driver of the electric vehicle can then remove a suitable charging plug from the charging plug receptacle of the charging station and charge the electric vehicle.The invention is explained in more detail below with reference to preferred exemplary embodiments with reference to the figures. The following are shown here: FIG. 1 shows a schematic illustration of an embodiment of the charging arrangement for charging an electric vehicle; FIG. 2 shows a schematic illustration of a further embodiment of the charging arrangement for charging an electric vehicle; FIG. 3 shows a schematic illustration of a further embodiment of the charging arrangement for charging an electric vehicle; FIG. 4 shows a schematic illustration of an embodiment of the method for forming an electrical connection between a charging station and an electric vehicle.FIG. 1 shows a schematic illustration of an embodiment of a charging arrangement 1. The charging arrangement 1 comprises a charging cable 2 and a charging plug 3, wherein the charging arrangement 1 is shown in an unconnected state.The charging cable 2 is connected to a charging station 5 on an infrastructure side 4. The connection can be designed as a releasable connection, for example in the form of a plug connection, or as a hard-wired connection.The charging cable 2 includes a DC line line 6 for transmitting a direct current, an AC line line 7 for transmitting an alternating current, a protective conductor 8, and a low-voltage line 9. On a vehicle side 10, the charging cable 2 has a unified coupling interface 11.The charging plug 3 has a complementarily configured unified coupling interface 13 on an infrastructure side 12. On a vehicle side 14, the charging plug 3 has a standardized electrical charging interface 15 for connection to a corresponding standardized electrical charging interface of an electric vehicle. The standardized electrical charging interface 15 can in this case comprise one of the following plug types 22: type 1, type 2, CCS type 1, CCS type 2, GB / T or CHAdeMO.The unified coupling interface 11 of the charging cable 2 and the complementary configured unified coupling interface 13 of the charging plug 3 can be mechanically and electrically connected to one another in a detachable manner by being inserted into one another and being mechanically locked to one another. Electrical connections (not shown) are provided in the charging plug 3, which connect the DC line section 6 and / or the AC line section 7 to corresponding contacts of the respectively provided vehicle-side standardized electrical charging interface 15.The charging plug 3 further comprises a control device 16. A voltage supply of the control device 16 takes place via a low-voltage line 9 provided by the charging cable 2. for this purpose the charging station 5 provides a voltage of 5 V via the low-voltage line 9, for example. The control device 16 performs a conversion between a communication protocol of the charging station 2, for example an Ethernet protocol, and a communication protocol of the electric vehicle, which communicates, for example, by means of a CAN bus. In this way, a charging process from the charging station 5 can be monitored and regulated even in the case of different communication protocols used in the electric vehicle during charging.Communication between the charging station 5 and the control device 16 is effected via the communication line 17 of the charging cable 2. for communicating with the electric vehicle, the charging plug 3 comprises a corresponding communication connection on the vehicle side.FIG. 2 shows a schematic illustration of a further embodiment of the charging arrangement 1. The charging arrangement 1 is constructed in principle as the embodiment shown in FIG. 1, identical reference numerals designate identical features and terms.In the embodiment shown, the unified coupling interface 11 additionally comprises locking means 18. Accordingly, the complementary unified coupling interface 13 of the charging plug 3 has complementary locking means 19. The locking means 18, 19 can be brought into engagement with one another when connecting the charging plug 3 to the charging cable 2 and can thereby be mechanically locked to one another.It can be provided here that the at least one locking means 18 can be locked and / or unlocked in a controlled manner. This is effected, for example, by means of the control device 16 of the charging plug 3. Additionally or alternatively, it is provided that the at least one complementarily configured locking means 19 can be locked and / or unlocked in a controlled manner. This is also effected, for example, by means of the control device 16 of the charging plug 3.FIG. 3 shows a schematic illustration of a further embodiment of the charging arrangement 1. The charging arrangement 1 is largely constructed like the embodiment shown in FIG. 2, like reference numerals designate like features and terms.In contrast to the embodiment shown in FIG. 2, the charging cable 2 does not have a communication line. However, the charging plug 3 has a wireless communication interface 20 via which the control device 16 can communicate wirelessly with the charging station 5. For this purpose, the charging station 5 likewise has a wireless communication interface 21. Before it is possible to communicate via the wireless communication interfaces 20, 21, the charging plug 3 or the electric vehicle must be authenticated in a manner known per se. Otherwise, the mode of operation of the charging arrangement 1 is the same in the already described embodiments.FIG. 4 shows a schematic illustration of an embodiment of the method for forming an electrical connection between a charging station and an electric vehicle.If an electric vehicle is to be charged at a charging station, the electric vehicle is moved to the charging station and the method is started 100.In a method step 101, a charging plug is provided depending on a standardized electrical charging interface of the electric vehicle. Either a suitable charging plug is carried in the electric vehicle itself or the charging plug is provided at the charging station and selected depending on the standardized electrical charging interface of the electric vehicle. For example, it can be provided that a matching charging plug is mounted, selected and removed at a charging plug receptacle of the charging station.In a method step 102, a complementarily configured unified coupling interface of the provided charging plug is coupled to a unified coupling interface of a charging cable connected to the charging station. In this case, the coupling interfaces are connected to one another both mechanically and electrically and are locked mechanically to one another. It can be provided that locking means are activated by a control device of the charging plug for locking and unlocking.Furthermore, in method step 102, a communication connection is also formed between a control device and the charging station via a wired communication line of the charging cable or a wireless communication interface of the charging plug with the charging station.In a method step 103, the charging plug connected to the charging cable is coupled to the electric vehicle via the standardized electrical charging interface. As a result, a mechanical and electrical connection is formed in a manner known per se between the charging plug and the standardized charging interface of the electric vehicle.The method is then ended 104 and the electric vehicle can be charged.Before and during charging, communication between the charging station and the electric vehicle is made possible by the control device performing a conversion between a communication protocol of the charging station and a communication protocol of the electric vehicle.Decoupling takes place after the completion of the charging of the electric vehicle by unlocking the locking means, in particular by actuating the locking means by means of the control device. The charging plug is then likewise decoupled from the charging cable again by releasing the connection between the unified coupling interface and the complementary unified coupling interface.List of reference characters1 Charging arrangement 2 Charging cable 3 Charging plug 4 Infrastructure side (charging cable) 5 Charging station 6 DC line section 7 AC line section 8 Protective conductor 9 Low-voltage line 10 Vehicle side (charging cable) 11 Unified coupling interface 12 Infrastructure side (charging plug) 13 Complementary unified coupling interface 14 Vehicle side (charging plug) 15 Standardized electrical charging interface 16 Control device 17 Communication line 18 Locking means 19 Complementary locking means 20 Wireless communication interface (charging plug) 21 Wireless communication interface (charging station) 100- 104 Method steps

Claims

Charging cable (2) for charging an electric vehicle, wherein the charging cable (2) is connected or can be connected on the infrastructure side (4) to a charging station (5), comprising: at least one DC line section (6) for transmitting a direct current and / or at least one AC line section (7) for transmitting an alternating current, and at least one protective conductor (8), wherein the charging cable (2) has on the vehicle side (10) a unified coupling interface (11), on which a replaceable charging plug (3) having a complementarily configured unified coupling interface (13) can be arranged and connected thereto in a detachable manner, wherein the unified coupling interface (11) has at least one locking means (18), which can be locked to at least one complementarily configured locking means (19) of the charging plug (3) in a detachable manner, and wherein the at least one locking means (18) can be locked and / or unlocked in a controlled manner.Charging cable (2) according to Claim 1, characterized byat least one low-voltage line (9).Charging cable (2) according to Claim 1 or 2, characterized byat least one communication line (17).Charging station (5) for providing electrical energy for an electric vehicle, comprising at least one charging cable (2) according to one of claims 1 to 3.Method for forming an electrical connection between a charging station (5) and an electric vehicle, comprising the following steps: - providing a charging plug (3) of a charging arrangement (1) according to one of Claims 7 to 10 as a function of a standardized electrical charging interface (15) of the electric vehicle, - coupling a complementarily configured standardized coupling interface (13) of the provided charging plug (3) to a standardized coupling interface (11) of a charging cable (2) according to one of Claims 1 to 3 connected to a charging station (5), - coupling the charging plug (3) connected to the charging cable (2) to the electric vehicle via the standardized electrical charging interface (15).Charging plug (3) for charging an electric vehicle, wherein the charging plug (3) has, on the infrastructure side (12), a complementarily configured unified coupling interface (13) which can be connected to a unified coupling interface (11) of a charging cable (2), wherein the charging cable (2) is connected or can be connected, on the infrastructure side (4), to a charging station (5) and comprises: at least one DC line section (6) for transmitting a direct current and / or at least one AC line section (7) for transmitting an alternating current, and at least one protective conductor (8), wherein the charging cable (2) has, on the vehicle side (10), the unified coupling interface (11), on which the charging plug (3) can be arranged with the complementarily configured unified coupling interface (13) and can be connected thereto in a detachable manner, wherein the unified coupling interface (11) has at least one locking means (18), which can be locked in a releasable manner with at least one locking means (19) of complementary design of the charging plug (3); and wherein the charging plug (3) has, on the vehicle side (14), a standardized electrical charging interface (15) for connection to a corresponding standardized electrical charging interface of the electric vehicle, wherein the standardized coupling interface (13) of complementary design of the charging plug (3) has the at least one locking means (19) of complementary design, which can be locked in a releasable manner with the at least one locking means (18) of the charging cable (2), wherein the at least one locking means (19) of complementary design can be locked and / or unlocked in a controlled manner.Charging arrangement (1) for charging an electric vehicle, comprising: a charging cable (2) and a charging plug (3); wherein the charging cable (2) is or can be connected to a charging station (5) on the infrastructure side (4), comprising: at least one DC line section (6) for transmitting a direct current and / or at least one AC line section (7) for transmitting an alternating current, and at least one protective conductor (8), wherein the charging cable (2) has a unified coupling interface (11) on the vehicle side (10), on which interface a replaceable charging plug (3) having a complementarily configured unified coupling interface (13) can be arranged and connected thereto in a detachable manner, wherein the unified coupling interface (11) has at least one locking means (18), which can be locked to at least one complementarily configured locking means (19) of the charging plug (3) in a detachable manner; wherein the charging plug (3) has the complementary unified coupling interface (13) on the infrastructure side (12), which can be connected to the unified coupling interface (11) of the charging cable (2), and wherein the charging plug (3) has a standardized electrical charging interface (15) on the vehicle side (14) for connection to a corresponding standardized electrical charging interface of the electric vehicle, and wherein the complementary unified coupling interface (13) has the at least one complementary configured locking means (19), which can be locked in a releasable manner to at least the locking means (18) of the charging cable (2), wherein the at least one locking means (18) can be locked and / or unlocked in a controlled manner and / or wherein the at least one complementary configured locking means (19) can be locked and / or unlocked in a controlled manner.Charging arrangement (1) according to Claim 7, characterized in that the charging plug (3) has a control device (16), wherein the charging plug (3) is designed in such a way that the control device (16) can be supplied with voltage via a low-voltage line (9) provided by the coupled charging cable (2), and wherein the control device (16) is designed to carry out a conversion between a communication protocol of the charging station (5) and a communication protocol of the electric vehicle.Charging arrangement (1) according to Claim 8, characterized in that the charging plug (3) has a wireless communication interface (20) via which the control device (16) can communicate wirelessly with the charging station (5).Charging arrangement (1) according to one of Claims 7 to 9, characterized in that the at least one locking means (19) of complementary design can be locked and / or unlocked in a controlled manner, wherein the control device (16) is configured to carry out locking and / or unlocking of the locking means (19) of complementary design and / or of the at least one locking means (18) on the charging cable (2).

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