DE102013007330A1 - Interchangeable plug for the transnational electrical charging of a means of transportation - Google Patents

Abstract

There are proposed a removable plug and a kit of parts for transnational electrical charging a means of transport. The alternating connector comprises a cable-side receptacle, an infrastructure-side receptacle, a housing and a control device arranged in the housing for checking and / or ensuring proper charging operation. According to the invention, the cable-side and the infrastructure-side receptacle for contacting the adapter plug are arranged on the housing.

Description

State of the art

The present invention relates to an AC plug for transnational electrical charging a means of transportation. In particular, the present invention relates to improvements in ease of use and reliability of chargers for electrically powered vehicles.

The charging of electric vehicles will be carried out in the initial phase to a high proportion of household sockets, since there is no nationwide infrastructure according to DIN IEC 62196-1 is available. Standardized household sockets, on the other hand, are accessible to many electric vehicle drivers. In Europe, the Schukostecksystem is basically harmonized, although in some countries, a separate plug-in system is used. This is the case in Italy, Switzerland, Denmark and Great Britain and France. Due to the different plug-in systems, adapters for the production of the power supply are necessary when traveling for the use of electrical devices.

In addition to the problem of different household plugs for transnational trips comes in this "charging mode 2 "That control and protection functions must be provided by means within the charging line set. These functions are met by a "ladder-integrated control and protection device", a so-called In-Cable Control Protection Device (IC-CPD), also abbreviated in the art with ICCB. However, this box prevents convenient use and makes a cable management system difficult (eg, a roll-up mechanism).

Currently, no suitable product for the adaptation of different plug-in systems is known, which allows a durable and safe use. The charging cable for the so-called charging mode 2 are all equipped with an IC-CPD - whereby the control and protection functions are integrated in the charging cable.

The car manufacturers offer electric vehicles with different charging cables. The offer includes charging cables with plugs for special infrastructure ( DIN IEC 62196-1 ) or charging cable fittings for connection to household sockets. In order to be able to charge European household sockets, however, five different charging cables are required (Schuko, I, CH, DK, G, F). To be able to do away with these expensive and voluminous investments, it is possible to use adapters to produce compatibility between different household plug-in systems. However, these are only suitable for home appliances of travel needs in low power classes to z. B. to use a razor, hair dryer or a notebook.

Furthermore, the car manufacturer GM offers a travel adapter set for charging electric vehicles to household sockets. The set consists of four individual country plugs each with a French type E socket (compatible with Schuko) and is offered as standard with the vehicle. This set is after DIN IEC 60884-1 2-5 and thus meets the requirements for a travel adapter as defined in the current draft standard.

DE 10 2010 045 160 A1 discloses a control device for a charging cable and a method for charging a traction battery of a motor vehicle. The control device for a charging cable comprises an interface for connection to the charging cable and an interface for connection to a so-called charging device. The control device is a separate component and serves as an adapter, so that the driver only needs a charging cable. If loaded on suitable intelligent charging devices, the control device is not needed. When loading at z. B. household sockets, the controller serves as an adaptation.

WO 201 1/09811 16 A1 describes an adapter for connecting an electrically driven vehicle to a charging station of a power grid. The adapter serves to identify the consumer and the information technology integration of the consumer in a control network. In addition, the adapter includes a switch that can be addressed via an external control network to enable or disable charging in response to a control signal.

DE 10 2008 048 657 A1 relates to an adapter and a method for detecting and accounting for transactions of electrical energy between a charging network operator and the user of a consumer. For this purpose, the adapter comprises a communication unit for identifying the adapter, a counter unit for measuring the transferred electrical energy and a mobile radio unit for transmitting data of the transaction to a central charging management and billing system.

DE 10 2009 058 614 A1 and DE 10 2010 014 417 A1 refer to charging cable for supplying electrically powered vehicles with energy from a power grid.

Current technical solutions provide the required control and protection functions in the charging cable (IC-CPD). This large device integrated in the charging cable makes it difficult to comfortably Use and stowage. The charging-line-integrated boxes are either provided with fixed lines or it is possible to install country-specific infrastructure lines.

A suitability of a conventional travel adapter for charging electric vehicles is not given. When loading electric vehicles requirements are placed on the adapter, which are not met by the known solutions.

The known charging cable for charging mode 2 currently have the big disadvantage that the IC CPD at a distance of min. 1100 mm from the infrastructure connector in the cable are integrated. This may result in a high mechanical load acting on the sockets used. Furthermore, comfortable cable management systems can not be used because the IC-CPD can not be rolled up with. There is currently no combination of IC-CPD and adaptation to the country-specific household plug, which is not integrated as a disturbing box in the charging cable.

Disclosure of the invention

The above-mentioned disadvantages of the prior art are achieved according to the invention by an alternating plug with the features according to claim 1 and a parts set according to claim 9.

The dependent claims show preferred developments of the invention.

The alternating plug according to the invention is used for transnational electrical charging of a, in particular electrically driven, means of locomotion. It includes a cable-side receptacle and an infrastructure-side recording. In the context of the present invention, a "receptacle" is understood to mean a structure for producing a reversible connection, in particular without the aid of tools. Further, a housing is provided, within which a control unit for checking and / or ensuring proper charging operation is arranged. A check within the meaning of the present invention comprises a transmission of operating parameters, which indicate a proper electrical energy transmission, for example, to enable fault current detection, overcurrent detection, overvoltage detection, overtemperature detection, etc. In the context of the present invention, "securing" is understood as a possibility for grasping action which, in the event of a fault, ensures that the electrical energy transmission between the means of transportation and an infrastructure is brought back within a normal range or is completely interrupted to avoid consequential damage. Furthermore, the control unit can be set up to adapt electrical parameters of an infrastructure to the needs of a vehicle electrical system of the means of transport to be loaded. In other words, an energy processing unit is optionally included in the control unit, which may include, for example, a switching power supply, a transformer, a frequency converter, etc. According to the invention, the cable-side receptacle, as well as the infrastructure-side recording, arranged directly on the housing of the adapter plug. In this way, the cable-side and the infrastructure-side recording by the housing in their relative position to each other are set. The infrastructure-side recording can be configured, for example, in the manner of a safety plug for direct contact with a charging device. Alternatively, the infrastructure-side recording represent an interface, which is configured for a mechanically stronger and compared to environmental influences significantly better shielded connection with a mobile connection element. Instead of a pure plug connection, the infrastructure-side receptacle can be set up to make a lockable connection with a mobile connection element. The cable-side receptacle of the adapter plug is designed to enter into a reversible connection with a corresponding element of a charging cable. The cable-side receptacle can be set up for locking with a corresponding connecting element of a charging cable. In particular, the cable-side receptacle of the interchangeable plug according to the invention can be set up to be connected to connection elements of a charging cable which itself does not fit directly into connections provided by the infrastructure. The alternating plug according to the invention represents a compact and therefore robust ausgestaltbare device by means of which a suitable cable can be used as a charging cable. In this case, contrary to the known in the prior art generic devices no so-called in-cable control box (IC-CPD) within the charging cable itself required to adapt the electrical characteristics of the infrastructure to the electrical characteristics of the means of transport.

Preferably, the infrastructure-side recording is set up to receive a country-specific connection element and to contact electrically. For the purposes of the present invention, a country-specific connecting element is understood as meaning such an element which is capable of permanently transmitting the electrical power required for charging an electrically drivable means of transport in a manner that is reliable in its operation. For example, 16 A or similar amperages at a rated voltage of 230 V or more for at least 1 hour are unproblematic. there For example, the infrastructure-side receptacle, as described above, may be configured to enter into a locked, but reversible, connection with the country-specific connection element. In particular, as country-specific connection elements according to the invention, those elements are understood which are able to produce a plug-in connection on the infrastructure side, while they can make a connection secured against accidental disconnection with the infrastructure-side receptacle of the alternating plug according to the invention. This offers the advantage that in the cross-border use of a means of transport one and the same inventive AC plug with low-cost country-specific connection elements can be used without several units, comprising expensive control units and / or several separate cables, each comprising integrated in-cable-control-boxes (IC-CPD) are to be carried. This increases the reliability and also allows a more compact and lightweight charging set for the trans-national operation of a means of transport.

More preferably, the infrastructure-side recording comprises a recognition device, which enables the control unit to assign a predefined characteristic of a connection element that can be arranged in the infrastructure-side receptacle to predefined operating characteristics. The predefined feature may, for example, be detected electrically, magnetically, mechanically or the like by the recognition device in response to which the control unit assigns the current configuration to a predefined category of connection element. In other words, a predefined feature is provided as coding of a predefined category of connection elements and recognizable by means of the identification device. An assignment of predefined operating characteristics may include maximum charging currents, voltages, powers and, moreover, allow the control unit to send control signals required by the infrastructure for monitoring the charging process. This offers the advantage that an automatic adaptation to country-specific circumstances takes place as soon as a user has used a suitable connecting element for the alternating plug according to the invention.

For example, the predefined feature may be an electrical conductor of a predefined electrical resistance. In order to identify the predefined feature, the detection device can have electrical contacts for contacting the electrical conductor on both sides and can be set up to evaluate electrical characteristics when the electrical conductor is acted upon by predefined electrical signals. Alternatively or additionally, a predefined arrangement of permanent-magnetic elements within the connection element or a mechanical coding in the form of cavities and cantilever structures can be provided which can be identified and assigned by corresponding magnetic field sensors (eg Hall sensor) or sensing devices by the identification device.

Preferably, the control unit may be configured to send control signals via the cable-side recording. These can, as described above, correspond to country-specific requirements of the respective charging infrastructure.

For example, a control signal may be generated in response to detection of a predefined feature. In this way, the means of locomotion via the charging cable can be informed that a country-specific connection element of a predetermined category has been connected, in response to which the means of transportation can in turn make arrangements to perform the best possible charging process with a suspected corresponding charging infrastructure. In this way, advantageously, an early adaptation and information processing within the means of transportation with regard to an impending country-specific charging process can take place. In addition, there are ways to inform a user of the means of transport early on that the connection between the AC plug and the means of transport is operational or subject to certain restrictions. For example, in view of a current state of charge of the energy storage of the means of transport, an estimated charging time can be displayed, which results from the presumed characteristics of a country-specific charging infrastructure.

More preferably, the cable-side receptacle may comprise a locking device. This can be configured, for example, as a bayonet lock or as a snap-lock connection. In this way it can be prevented that when loosening a connector between a country-specific connection element and the charging infrastructure accidentally the country-specific connection element is released from the AC connector according to the invention. In addition, the said locking devices are able to increase the mechanical strength and bending stiffness of a composite of country-specific connection element and AC plug, whereby the weight of the adapter plug and in particular the cable connected to it can be better introduced into the charging socket of the infrastructure.

Alternatively or additionally, the infrastructure-side recording is set up, a structure a country-specific connection element at least partially, in particular completely, to include. In other words, a part of a country-specific connection element can be inserted at least partially into a structure of the infrastructure-side receptacle of the adapter plug. For this purpose, the infrastructure-side recording in particular have a collar through which generated by the weight of the adapter plug in conjunction with the cable connected moments can be better transferred to the country-specific connection element.

Alternatively or additionally, the cable-side receptacle and / or the infrastructure-side receptacle may comprise sealing means which are set up to seal a connection of the respective receptacle against sprayed and dirty water. In this case, the sealing means may be configured, for example, as circumferential sealing rings, which seals the infrastructure-side receptacle relative to the country-specific connection element and / or the cable-side receptacle relative to a connection element of a locomotion-side cable.

More preferably, the alternating plug according to the invention is set up to be spatially fixed directly to a charging infrastructure via a country-specific connection element. In other words, a country-specific connection element connected to the infrastructure-side receptacle is likewise embodied as a compact body, which in particular requires no cable connection between the charging infrastructure and the alternating plug according to the invention. Rather, the composite of country-specific connection element and inventive AC connector is configured such that initiated in the charging infrastructure moments due to the mass of the adapter plug and the charging cable turn out low. For this purpose, the AC plug can be configured so that the plug-in direction for contacting the charging infrastructure is oriented by the country-specific connection element substantially at right angles to the longitudinal axis of a cable connected to the AC plug. This offers the advantage that possibly sensitive components of the control unit of the interchangeable plug are protected against overrunning or similar mechanical stresses. On the other hand, the mechanical stress of used doses of the charging infrastructure and the country-specific connection element used decreases.

According to a further aspect of the present invention, a kit of parts is proposed, which comprises an exchangeable plug, as has been presented in connection with the abovementioned aspect of the invention. Furthermore, the parts set comprises a so-called "type II plug" with a cable-side receptacle. The type II plug has proven itself in the field of electromobility as a standard plug, which requires no processing or conversion of infrastructure provided electrical parameters to the vehicle electrical system. In this case, the cable-side receptacle of the type II plug can be configured in accordance with the cable-side receptacle of the alternating plug according to the invention. Further, the kit of parts according to the invention comprises a connection element for connection to the infrastructure-side recording of the adapter plug. In other words, at least one connection element is included which serves for contacting a socket of a charging infrastructure device. For the connection element of the kit according to the invention, the statements made in connection with the first-mentioned aspect of the invention apply to the country-specific connection element accordingly. Preferably, the kit of parts according to the invention also comprises a cable which is arranged on one side for selectively connecting to the cable-side receptacle of the adapter plug or the cable-side receptacle of the type II plug. In this way, the cable can either be set up for direct electrical connection to a customized charging infrastructure as a charging cable or be used by connection to a plug according to the invention and the country-specific connection element to obtain energy for loading the means of transportation by conventional electrical connections. At its second end, the cable is arranged for connection to a means of locomotion. This connection can be configured, for example, manufacturer-specific or alternatively according to relevant standards. The set of parts described above allows a safe, comfortable and compact way to transnational charging an electrically powered means of transportation. Of course, further country-specific connection elements may be provided within the parts set in order to adapt the AC plug to other country-specific charging infrastructures.

More preferably, the cable has on its one side a locking mechanism corresponding to the locking device of a cable-side receptacle of the replaceable plug. In other words, a bayonet closure may be provided for connection to the alternating plug or a structure which corresponds to a bayonet closure provided on the alternating plug. The cable can also include a seal to protect against dirt and spray. In particular, the cable on its first side can not be connected to a country-specific connection element. In this way, a user is prevented from abusive or accidental attempts to a country-specific connection element described above without operate according to the invention AC adapter with the cable.

In this way, the invention provides compatibility with various household plug-in systems in Europe, in order to enable cross-border charging of electric vehicles to household sockets. This is done by connecting country-specific connection elements to a defined interface on the AC plug. In addition, control and protection functions are integrated into the AC plug, which eliminates the need for an additional box (IC-CPD) in the charging cable. Overcurrent fuses as well as temperature measuring elements for monitoring and safeguarding the charging process can be present both in the country-specific connection elements and in the changeover plug according to the invention. In this case, materials can be used which allow both the permanent load with high currents (16 A) and the increased requirements for outdoor use and the risk of driving over with the means of transportation.

According to the invention, the country-specific connection element temporarily becomes an integral part of the entire charging cable. In contrast to known arrangements, which propose an adapter to adapt to country-specific circumstances, which is placed on a plug without the adapter in principle, the inventive arrangement in individual embodiments only by inserting the country-specific connection element to a complete and functional charging cable. Since an adaptation of the charging cable to country-specific conditions is much less required than contacts a charging infrastructure, the electrical connection between the country-specific connection element and the AC connector according to the invention can be optimized for low contact resistance, whereby the arrangement produces less power loss and heat. As a result, unlike conventional solutions, the invention enables a problem-free continuous load with high currents. By dispensing with an IC-CPD placed in the cable, the entire cable can be stowed away in a space-saving manner thanks to comfortable retracting mechanisms. Although the alternative use of the cable both with AC plug and type II plug requires an additional recording with corresponding transition losses, but in this way only a single cable support all current charging scenarios, which reduces space requirements and mitzuführende mass.

Brief description of the drawings

Hereinafter, embodiments of the invention will be described in detail with reference to the accompanying drawings. In the drawings:

1 a perspective view of a mounted on a wall charging infrastructure with conventional charging cable;

2 a detailed view of in 1 illustrated connector;

3 an example of an arrangement with IC-CPD according to the prior art;

4a to 4f Types of known connectors for electrical energy transmission;

5 a perspective view of an angled earthing contact plug;

6 a detailed view of the in 5 shown embodiment of the present invention;

7 an embodiment of a change plug according to the invention;

8th a schematic overview of components, as they could be used in the implementation of a charge; and

9 a detailed view of an embodiment of a country-specific connection element according to the present invention.

Embodiments of the invention

1 shows a so-called wall box 19 as currently used to provide electrical energy for an electrically powered vehicle. A safety plug 21 is via a travel adapter 20 with the wall box 19 connected. Through the travel adapter 20 is the lever arm for the on the safety plug 21 hanging load of cable 16 and in-cable-control-box (IC-CPD) 40 (comprising a control unit 6 ) so big that the in 2 better recognizable lowering of the travel adapter 20 results.

In 2 becomes the impact of the mass of the cable 16 and the IC CPD 40 recognizable. A considerable moment, which via the safety plug 21 and the travel adapter 20 in the wall box 19 is initiated, charged the electrical plug contacts of the travel adapter 20 as well as the wall box 19 so strong that the travel adapter 20 substantially is lowered relative to the horizontal (corresponding to the plug-in direction).

3 shows a cable 16 in which an IC CPD 40 with a control unit 6 is arranged as an independent element. At the other end of the cable 16 is a safety plug 11 arranged reversibly.

4a shows a safety plug 21 and a grounded receptacle 22 of type "F".

4b shows a safety plug 23 and a grounded receptacle 24 of type "E".

4c shows a safety plug 25 and a grounded receptacle 26 of type "K".

4d shows a safety plug 27 . 28 and a grounded receptacle 29 of type "G".

4e shows a safety plug 30 and a grounded receptacle 31 of type "L".

4f shows a safety plug 32 and a grounded receptacle 33 of type "J".

5 shows a perspective view of an angled earthing contact plug 11 with a housing 5 , Infrastructure side has the earthing contact plug 11 an infrastructure-side recording 4 on. Cable side has the earthing contact plug 11 a recording 3 with a bayonet lock 12 as a locking device.

6 shows an embodiment of a change plug according to the invention 1 , in addition to being in conjunction with 5 shown elements within the housing 5 arranged control unit 6 with a recognition unit 8th includes. The recognition unit 8th is designed as a magnetic field sensor. The control unit 6 is set up, the two contacts of the earthing contact plug face as infrastructural recording 4 electrically connect with four wires in the cable-side receptacle 3 end up. Here is the control unit 6 adapted to adapt the electrical characteristics of a charging infrastructure to the requirements of a connected means of transport.

7 shows an alternative embodiment of a change plug according to the invention 1 , The infrastructure-side recording 4 has seven electrical contacts 10 on top of a collar 14 for stabilizing a connection with a (not shown) country-specific connection element are surrounded. The infrastructure-side recording 4 is inside the case 5 approximately at right angles with respect to a direction of insertion to a cable-side receptacle 3 arranged. The cable-side recording 3 also includes seven electrical contacts 10 which is in a connecting element 19 a cable 16 to lead. Next is the cable side recording 3 furnished, with a bayonet lock 17 of the connection element 19 to be connected. The connection element 19 is designed so that an electrical connection with known charging infrastructure boxes is not possible. Only by using the change plug according to the invention 1 in conjunction with a country-specific connection element, the cable 16 be used for the transmission of electrical energy in a means of transportation.

8th shows an overview of components according to the invention for carrying out a charging process. Infrastructure side is a charging station 34 provided, which is a charging socket 18 provides for electrical contact by a charging cable. A car 2 as a means of transport is about a cable 16 record electrical energy of the infrastructure. Shown are two alternatives that provide the present invention. On the one hand is a removable plug 1 provided, as in connection with 7 has been presented. To connect to the infrastructure-side recording 4 is a two-pole designed country-specific connection element 7a , a three-pole country-specific connection element 7b and an alternative two-pole country-specific connection element 7c shown. All country-specific connection elements 7a , b, c are set up, with the electrical contacts 10 the alternating plug according to the invention 1 to be connected, the connecting elements 7a . 7b . 7c proportionately through the collar 14 be included. Alternatively, the cable 16 with a cable-side recording 3 a type II connector 15 as long as the charging infrastructure provides the electrical energy with parameters that match those of the car 2 correspond.

9 shows a sectional side view of a country-specific connection element 7 whose electrical contacts 10 in a structure 13 are arranged, which by a collar 14 a change plug according to the invention 1 can be included. With the top of the electrical contacts 10 is an electrical resistance 9 as a predefined feature of the country-specific connection element 7 connected. On the electrical contacts 10 opposite side has the country-specific connection element 7 three contactable electrical conductors, one with the resistor 9 connected electrical conductor 11 for contacting by a recognition device 8th is available. In this case, the detection device 8th Based on storage values the measured electrical resistance 9 the present class of the country-specific connection element 7 assign and derive forthcoming to be processed electrical characteristics.

Although the aspects and advantageous embodiments of the invention have been described in detail with reference to the embodiments explained in connection with the accompanying drawings, modifications and combinations of features of the illustrated embodiments are possible for the skilled person, without departing from the scope of the present invention, the scope of protection the appended claims are defined.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010045160 A1 [0007]
• WO 2011/0981116 A1 [0008]
• DE 102008048657 A1 [0009]
• DE 102009058614 A1 [0010]
• DE 102010014417 A1 [0010]

Cited non-patent literature

• DIN IEC 62196-1 [0002]
• DIN IEC 62196-1 [0005]
• DIN IEC 60884-1 2-5 [0006]

Claims (10)

AC adapter ( 1 ) for the trans-national electrical charging of a means of transport ( 2 ) comprising: - a cable-side receptacle ( 3 ), - an infrastructure-side recording ( 4 ), - a housing ( 5 ), - one in the housing ( 5 ) arranged control unit ( 6 ) for checking and / or ensuring proper charging operation, the cable-side receptacle ( 3 ) and the infrastructure-side recording ( 4 ) for contacting the adapter plug on the housing ( 5 ) are arranged. A change-over plug according to claim 1, wherein the infrastructure-side receptacle ( 4 ), a country-specific connection element ( 7 ) and to contact electrically. A change-over plug according to one of the preceding claims, wherein the infrastructure-side receptacle ( 4 ) a recognition device ( 8th ) and the control unit ( 6 ), a predefined feature ( 9 ) one in the infrastructure side ( 4 ) can be arranged connection element ( 7 ) by means of the recognition device ( 8th ) assign predefined operating parameters. A removable connector according to claim 3, wherein the predefined feature ( 9 ) an electrical conductor ( 11 ) of a predefined electrical resistance and the detection device electrical contacts ( 10 ) for double-sided contacting of the electrical conductor ( 11 ), and / or the predefined operating characteristics comprise maximum permissible current intensity values. A change-over plug according to one of claims 3 or 4, wherein the control unit ( 6 ), control signals via the cable-side recording ( 3 ), wherein the control signals in particular in response to a recognition of a predefined feature ( 9 ), preferably in dependence on a respective feature. An alternating connector according to one of the preceding claims, wherein the control unit ( 6 ), control signals via the cable-side recording ( 3 ), which are the means of transport ( 2 ) a perfect connection of the adapter ( 1 ) with the means of transportation ( 2 ) signal or a problem concerning the connection of the adapter plug ( 1 ) with the means of transportation ( 2 ) signal. An alternating plug according to one of the preceding claims, wherein - the cable-side receptacle ( 3 ) a locking device ( 12 ), in particular a bayonet closure or a snap-lock connection, and / or - the infrastructure-side receptacle ( 4 ), a structure ( 13 ) of a country-specific connection element ( 7 ) at least partially, preferably completely, and in particular a collar ( 14 ), which comprises the structure at least partially, and / or - the cable-side receptacle ( 3 ) and / or the infrastructure-side recording ( 4 ) Seal means, which are arranged, comprise a connection of the receptacle ( 3 . 4 ) to seal against splash and dirty water. A change-over plug according to one of the preceding claims, which is set up via a country-specific connection element ( 7 ) directly at a charging infrastructure ( 18 ) to be spatially determined. Parts kit comprising: - an adapter plug ( 1 ) according to one of the preceding claims, - a type II plug ( 15 ) with a cable-side receptacle ( 3 ), - a connection element ( 7 ) for connection to the infrastructure-side recording ( 4 ) of the adapter plug ( 1 ), and in particular - a cable ( 16 ), which - firstly for selective connection with the cable-side receptacle ( 3 ) of the adapter plug ( 1 ) or the cable-side receptacle ( 3 ) of the Type II connector ( 15 ) and - secondly for connection to a means of locomotion ( 2 ) is set up. A kit of parts according to claim 9, wherein the cable ( 16 ) first one with the locking device ( 12 ) the cable-side receptacle ( 3 ) of the adapter plug ( 1 ) according to claim 7 corresponding locking mechanism ( 17 ), wherein the cable-side receptacle ( 3 ) of the cable ( 16 ) is designed not corresponding to the connection element.

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