DE102022129660A1 - Adapter and adapter assembly - Google Patents

Abstract

The present invention relates to an adapter assembly (1, 8) comprising an adapter (1) and a socket adapter (8). The adapter (1) is designed to transmit electrical energy from a charging current connection (2) of a motor vehicle (3) to an electrical load (4) via at least one power connection (5). The power connection (5) forms an interface for the electrical load (4), the power connection (5) being designed as a multi-phase power connection, in particular as a three-phase alternating current connection. The socket adapter (8) corresponds electrically to the power connection (5) of the adapter (1) and has at least one socket, which is designed, for example, as a multi-phase alternating current socket (9) or a single-phase alternating current socket (10) according to different country types. By exchanging the socket adapter (8), the adapter assembly (1, 8) can be adapted to different socket types and different country types.

Description

Technical area

The present invention relates to an adapter and an adapter assembly for transmitting electrical energy from a motor vehicle via a charging current connection to an electrical load.

State of the art

Electrically powered motor vehicles are designed to store a quantity of electrical energy in an on-board battery, which can be used not only to move the motor vehicle, but also to operate other electrical devices or to charge broken-down electric motor vehicles. Adapter systems are provided for this purpose, via which the electrical energy stored in the battery can be delivered via the charging connection of the motor vehicle. The problem here is that there are different country-specific plug and socket types and that electrical devices have different requirements in terms of the electrical power required for operation.

From the EN 10 2021 111 945 A1 A host system with an AC charging input and a method for identifying an electrical device connected thereto are known.

From the EN 10 2021 208 948 A1 A device for controlling the charging or discharging of a vehicle, a system with this device and a method therefor are known.

From the EP 2 677 607 A1 An adapter and a vehicle equipped therewith as well as a method for vehicle control are known.

From the EP 2 690 741 A1 An adapter, a vehicle and a method for supplying energy with this adapter are known.

From the JP 2015-072869 A A power supply plug is known.

From the FR 3 010 581 A1 An adapter device for sockets and a socket arrangement with such a device are known.

From the EN 11 2012 006 765 T5 An external power supply connector, a vehicle and an external power supply system are known.

Description of the invention

Based on the known prior art, it is an object of the present invention to provide an improved adapter for transmitting electrical energy from a motor vehicle to an electrical load, as well as an improved adapter assembly.

The object is achieved by an adapter having the features of claim 1. Advantageous further developments of the adapter emerge from the subclaims, the description and the figures.

Accordingly, an adapter for transmitting electrical energy from a charging current connection of a motor vehicle to an electrical load via at least one power connection is proposed, wherein the power connection is provided as an interface for the electrical load. The adapter is characterized in that the power connection is designed as a multiphase power connection.

The multiphase power connection can, for example, be designed as a three-phase alternating current connection.

In other words, the adapter can have a charging plug on one side, which is designed to correspond to the charging current connection of the motor vehicle. For example, the charging plug of the adapter can correspond to a charging connection, for example a type 1 charging connection according to an SAE J-1772 standard or a type 2 charging connection according to an IEC 62196 standard or a charging connection according to a GB/T standard.

In addition, the charging plug can be designed to correspond with a combination charging connection (combo plug) for simultaneous direct current and alternating current charging. For this purpose, the charging plug of the adapter can be designed as a dummy plug opposite the direct current connection or the direct current connections of the combination charging connection.

On the other hand, the adapter can have the power connection, which is designed to provide electrical energy to an electrical load or a socket adapter. For this purpose, the power connection can be designed as a socket or as a corresponding plug for a socket adapter. The power connection can have a number of phase conductors, the number of which can correspond to the phase conductors of the charging plug and/or the charging current connection of the motor vehicle or less. For example For example, the power connection can be designed as a multi-phase alternating current socket, in particular as a three-phase alternating current socket or a two-phase alternating current socket or a single-phase alternating current socket.

The electrical load may be an electrical household appliance, such as a television or a stove, or an electrically powered tool or another motor vehicle.

Depending on the country, the electrical load may have different country-specific connection plugs or the electrical load may have different power requirements. For example, the electrical load may be an electrical device such as a stove or a tool or another motor vehicle that must be operated with a three-phase alternating current. Using the socket adapter, which is designed to correspond to the power connection of the adapter, different country-specific socket types and socket types can be arranged on the adapter. The term socket type can include a standardized, country-specific socket design and the term socket type can include a number of phase conductors of the socket, i.e. whether the socket is a multi-phase alternating current socket or a single-phase alternating current socket.

One embodiment of the adapter provides that the power connection is designed as a three-phase alternating current connection, wherein the three-phase alternating current connection is designed as a male or a female plug.

This has the advantage that the adapter can transmit a higher electrical power, in particular an electrical power of a three-phase alternating current, to the electrical load.

Furthermore, it can be provided that the adapter can have a receptacle which is designed for a detachable mechanical connection to a socket adapter corresponding to the power connection. In other words, the adapter can have a mechanical interface on the side of the power connection for a mechanical and electrical connection to the socket adapter. For this purpose, the socket adapter can have a mechanical interface corresponding to the interface of the adapter, such as at least one connecting element. In addition, the socket adapter can have an electrical interface corresponding to the power connection, such as at least one socket adapter connecting element. The interfaces of the adapter and the socket adapter can be designed to establish a mechanical connection by means of the at least one connecting element and the socket adapter connecting element, which can be established and released again easily by a user. This has the advantage that the socket adapter can be replaced easily.

Furthermore, it can be provided that the mechanical connection is designed as a screw and/or a clamp and/or a locking connection. In other words, the mechanical connection can be a screw connection, wherein the connecting element of the adapter can comprise at least one recess with a thread and the socket adapter connecting element of the socket adapter can comprise a hole for a screw to pass through.

In addition or alternatively, the mechanical connection can be provided as a clamp connection and/or a snap connection. This has the advantage that the socket adapter can be replaced easily.

Furthermore, it can be provided that the power connection is designed as a multi-phase alternating current socket, in particular as a three-phase alternating current socket. In other words, the multi-phase alternating current socket can have a number of phase conductors which corresponds to the number of phase conductors of the charging plug of the adapter or the charging current connection of the motor vehicle or less. For example, the power connection of the adapter can be designed as a three-phase alternating current socket or a two-phase alternating current socket or a single-phase alternating current socket. The power connection can be designed as a socket according to a country-specific standard, such as a 3L+PE, 6h three-phase alternating current socket. This results in the advantage that an electrical device which is operated with a three-phase alternating current or a broken-down motor vehicle can be connected directly to the power connection of the adapter. Alternatively, the power connection can be provided as a corresponding male plug.

In particular, the socket adapter can be designed to electrically contact two phase conductors of the power connection and to be a dummy plug for one phase conductor. This allows a constant electrical power to be transmitted from the motor vehicle to an electrical load intended for a two-phase alternating current, such as for operating a stove.

This has the advantage that a wider range of electrical power can be transmitted from the motor vehicle to the electrical load and, in addition, the electrical power transmitted can be graded. For example, an electric stove that is operated with three-phase alternating current can be supplied with electrical energy via the power connection. If, for example, a fan is to be operated as an electrical load, which only requires a single-phase alternating current socket, the socket adapter with a single-phase alternating current socket can be connected between the power connection and the fan. The socket adapter can be designed to make electrical contact with only one phase conductor of the power connection, via which the single-phase alternating current socket is supplied with electrical energy.

In addition, the socket adapter can be designed as a multi-plug with several single-phase AC sockets, whereby each single-phase AC socket is supplied with electrical energy from a phase conductor of the power connection. This means that several electrical devices can be supplied with electrical energy in parallel.

Additionally or alternatively, the socket adapter can be designed as a multi-plug comprising a combination of at least one multi-phase AC socket and at least one single-phase AC socket. The socket adapter can be designed to contact different phase conductors of the power connection for supplying the respective socket with electrical energy, so that the respective socket is electrically contacted with different phase conductors. For example, the socket adapter can be designed as a multi-plug comprising a two-phase AC socket and a single-phase AC socket, wherein the socket adapter is designed to supply the two-phase AC socket with electrical energy via the phase conductors L1 and L2 and the single-phase AC socket via the phase conductor L3. This allows more electrical energy to be transmitted from the motor vehicle to several different electrical devices or to a motor vehicle.

Furthermore, it can be provided that the multiphase socket or the three-phase AC socket is designed according to an IEC 60309 standard, in particular according to a CEE standard. In other words, the multiphase AC socket can be designed as an L+N+PE, 6h or as a 3L+N+PE, 6h or as an L+N+PE, 4h or as a 3L+N+PE, 9h or as a 7-pin multiphase AC socket. The power connection can also be designed as such a multiphase AC socket.

A specific embodiment of the adapter provides that the power connection is designed as a 3L+N+PE, 6h three-phase alternating current socket (three-phase socket).

The socket adapter can be designed to provide electrical transmission from the power connection to other socket types and/or to other socket types. For example, the socket adapter corresponding to the power connection can have a multiphase AC socket with a different number of phase conductors than the power connection or correspond to another country-specific socket type. For example, the socket adapter can have multiphase AC sockets and/or single-phase AC sockets according to different country standards and in this way provide the translation.

In addition, according to the CEE standard, the single-phase AC socket can be designed as a type A, B, C, D, E, F (Schuko), G, I J, K, L, M, N or O socket.

For example, the socket adapter can have a voltage converter for the corresponding country-specific socket type.

This has the advantage that the adapter can be easily adapted to different country specifications.

Furthermore, it can be provided that the adapter is designed to provide an electrical power of 7 kW or less for the electrical load, in particular in the range from 3.6 kW to 7 kW. In other words, the socket adapter can be designed to electrically contact individual phases of the power connection and can be designed as a dummy plug for at least one phase of the power connection. The socket adapter can thus be designed to provide the electrical power of the respective phase conductors individually or in combination. For example, the socket adapter can comprise a single-phase alternating current socket, such as a type F plug (Schuko plug), and can be designed to provide an electrical power of 3.6 kW from a phase conductor of the power connection.

In addition or alternatively, the socket adapter can be a multiphase AC plug socket, such as a type 3L+PE, 6h plug (“CEE plug”), and be designed to provide an electrical power of 3 phase conductors of the power connection of 7 kW.

This has the advantage that the adapter can be adapted to different power levels of different socket types in addition to country-specific variations.

The above-mentioned object is further achieved by an adapter assembly having the features of claim 8. Advantageous further developments of the adapter assembly emerge from the subclaims as well as the present description and the figures.

Accordingly, an adapter assembly is proposed which comprises said adapter and a socket adapter which is designed to electrically correspond to the power connection of the adapter and/or to be mechanically connected to the receptacle of the adapter.

In other words, the adapter assembly can comprise the adapter and the socket adapter, wherein the adapter is designed to tap the electrical energy via a charging plug from the charging current connection of a motor vehicle and to provide it at the power connection. The power connection can be provided, for example, as a power connection corresponding to the charging plug. For this purpose, the socket adapter can have a corresponding plug on one side, which corresponds to the power connection of the adapter, and on another side at least one socket, i.e. a multi-phase AC socket and/or a single-phase AC socket, according to different country-specific socket types.

This has the advantage that the electrical power can be provided not only country-specifically, but also in different power levels, i.e. single-phase alternating current or multi-phase alternating current, from the motor vehicle via the adapter brewing group to an electrical device as an electrical load.

Furthermore, it can be provided that the socket adapter can have at least one socket, which is designed, for example, as a multi-phase alternating current socket or a single-phase alternating current socket, wherein the multi-phase socket is designed in particular as a three-phase alternating current socket or a two-phase alternating current socket.

In other words, the socket adapter can be designed to have a certain, country-specific socket type, so that a country specification or a socket type can be varied by exchanging the socket adapter. The socket type can indicate whether the socket is a single-phase or a multi-phase AC socket, in particular a three-phase AC socket. For example, it is possible to swap between a socket adapter with a single-phase AC socket of type F (Schuko plug) and a socket adapter with a multi-phase AC socket of type 3L+PE, 6h (“three-phase”).

By contacting a different number of phase conductors of the adapter's power connection through the respective socket adapter, i.e. one phase for the socket adapter with the single-phase AC socket and three phase conductors for the socket adapter with the multi-phase AC socket, the electrical power from the motor vehicle can be delivered at different power levels via the adapter brewing unit. The electrical power delivered by the motor vehicle can be limited by a maximum charging power of an on-board charger of the motor vehicle.

In addition, the adapter and the socket adapter for the electrical transmission from the power connection to other socket types can be designed to set a country-specific mains voltage and/or mains frequency. For this purpose, the socket adapter can have a memory in which the socket type and/or the country-specific socket type and/or a country-specific mains voltage and/or a country-specific mains frequency are stored, and an interface for the adapter. The socket type can include whether the socket adapter has a multi-phase AC socket or a single-phase AC socket.

The adapter can be configured by means of a corresponding electrical interface to read the said parameters from the memory of the socket adapter when the socket adapter comes into contact with the adapter's receptacle. The adapter can also be configured to send an electrical signal to a charging control unit of the motor vehicle about the socket type and/or the corresponding country-specific mains voltage and/or country-specific mains frequency of the respective socket type for setting an on-board voltage converter of the motor vehicle to the respective mains voltage. voltage and/or mains frequency. For example, the adapter can be set up to output the signal to the charging control unit of the motor vehicle via the control pilot connection.

For this purpose, the adapter and/or the socket adapter and/or the charging control unit of the motor vehicle can each have an electronic control unit (ECU) or be provided as an electronic control unit (ECU) which comprises at least one processor and/or at least one memory, wherein program instructions are stored in the memory which cause the at least one processor to carry out the said method for adapting the country-specific mains voltage and/or mains frequency and/or adapting a power level of the socket type.

In other words, the adapter and/or the socket adapter and/or the charging control unit of the motor vehicle can each have a data processing device or at least one processor device that is set up to carry out the method described above. For this purpose, the processor device can have at least one microprocessor and/or at least one microcontroller and/or at least one FPGA (Field Programmable Gate Array) and/or at least one DSP (Digital Signal Processor). Furthermore, the processor device can have program code that is set up to carry out the embodiment of the said adaptation of the country-specific mains voltage and/or mains frequency and/or the adaptation of the power level of the socket type when executed by the processor device. The program code can be stored in a data memory or processor device.

The motor vehicle can be designed as a motor vehicle, in particular as a passenger car or truck, or as a passenger bus or motorcycle. The motor vehicle can be electrically powered (EV) or in particular a hybrid electric vehicle (HEV, PHEV).

For example, depending on the socket type, a country-specific mains voltage and/or mains frequency, such as 230 V and 50 Hz for the single-phase AC socket of type F and/or 400 V and 50 Hz for the multi-phase AC socket of type 3L+PE, 6h, can be transmitted to the charging control unit via the adapter.

This has the advantage that the adapter assembly can be easily adapted to different countries and different power levels by changing the socket adapter.

Furthermore, it can be provided that the at least one socket can be designed according to an IEC 60309 standard, in particular according to a CEE standard. In other words, the socket adapter can, for example, comprise a single-phase alternating current socket, such as a type F plug (Schuko plug) and be designed to provide an electrical output of 3.6 kW from one phase conductor of the power connection. Alternatively, the socket adapter can comprise a multi-phase alternating current socket, such as a type 3L+PE, 6h plug (“CEE plug”) and be designed to provide an electrical output of 7 kW from 3 phase conductors of the power connection.

The invention may also include implementations that are a combination of the features of several of the described embodiments.

Short description of the characters

• 1 zeigt eine schematische Darstellung einer Adapterbaugruppe umfassend einen Anschlussadapter und einen Steckdosenadapter, mittels welcher eine elektrische Last über einen Ladestromanschluss eines Kraftfahrzeugs mit elektrischer Energie versorgt wird; und
• 2 zeigt eine schematische Darstellung eines elektrischen Schaltplans der Adapterbaugruppe.

Preferred further embodiments of the invention are explained in more detail by the following description of the figures.

• 1 shows a schematic representation of an adapter assembly comprising a connection adapter and a socket adapter, by means of which an electrical load is supplied with electrical energy via a charging current connection of a motor vehicle; and
• 2 shows a schematic representation of an electrical diagram of the adapter assembly.

Detailed description of preferred embodiments

Preferred embodiments are described below with reference to the figures. Identical, similar or equivalent elements in the different figures are provided with identical reference symbols, and a repeated description of these elements is partially omitted in order to avoid redundancies.

In 1 An adapter assembly is shown schematically, which comprises an adapter 1 and a socket adapter 8.

The adapter 1 is designed to be mechanically and electrically connected to a charging current connection 2 of a motor vehicle 3 via a charging plug 12. For example, the charging current connection 2 of the motor vehicle 3 can be designed primarily for single-phase alternating current charging or three-phase alternating current charging. In other words, the charging current connection 2 serves to charge a traction battery of the motor vehicle 3 in a known manner. For this purpose, the motor vehicle 3 is typically connected to the power grid via a charging plug 12 of a charging station and the charging process is then controlled via the charging station.

The charging current connection 2 can, for example, be designed such that it can accommodate charging plugs 12 according to an SAE J1772 standard or an IEC 62196 standard, i.e. with a type 1 or type 2 or type 3 charging plug. Alternatively, the charging current connection 2 can be designed to accommodate charging plugs 12 according to other standards, such as a GB/T standard or a CHAdeMO standard. In addition, the charging current connection 2 can be designed to correspond to a combined charging plug 12 for alternating current and direct current charging, i.e. to correspond to a combination plug according to a Combined Charging System (CCS).

The adapter 1 is now designed to be inserted into the charging current connection 2 in order to draw electrical energy from the motor vehicle 3. In other words, the adapter 1 is used to draw energy from the traction battery via the charging current connection 2 actually intended for charging the traction battery in order to operate an external electrical load 4.

The adapter 1 is accordingly intended to provide electrical power for an electrical load 4, for example a stove, via a power connection 5 after activation by means of a switch S _1. For example, the proximity pilot connection of the charging current connection 2 can be electrically connected to the control pilot connection by means of the switch S ₁ , so that an electrical signal is sent to a charging control device of the motor vehicle 3 via the proximity pilot connection, which causes the charging current connection 2 to be released for the provision of electrical energy. The adapter 1 can thus activate the provision of electrical energy from the charging control device of the motor vehicle 3.

The power connection 5 of the adapter 1 is designed as a multiphase power connection and, for example, as a male or female power plug.

The power connector 5 can be configured to correspond to a socket adapter 8, wherein the socket of the socket adapter 8 is provided for the connection of the electrical load 4. In other words, the power connector 5 can provide the energy for the external consumer via a socket adapter 8 to provide the connection for the electrical load 4.

In addition, the power connection 5 can be designed as a socket, for example as a multi-phase AC socket and in particular as a three-phase AC socket or a two-phase AC socket. The number of phase conductors of the power connection 5 can correspond to the number of phase conductors of the charging current connection 2 or the corresponding charging plug 12 or less. The power connection 5 comprises at least two phase conductors.

The adapter 1 has a receptacle 6 with the power connection 5 integrated therein. The receptacle 6 has at least one adapter connection element 7, which can be a screw thread, for example. The receptacle 6 is designed for a mechanical and additionally an electrical coupling of the adapter 1 to the socket adapter 8. For this purpose, the socket adapter 8 can be arranged on or in the receptacle 6 and mechanically fixed to the adapter 1 by means of at least one adapter connection element 7 and the corresponding socket adapter connection element 11.

In other words, different socket adapters 8 can be connected to the adapter 1, which then interact with the power connection 5 of the adapter 1 such that the electrical load 4 can be connected to the adapter 1 via its corresponding connection.

Additionally or alternatively, the adapter connection element 7 can be designed for a mechanical screw and/or a clamp and/or a snap-in connection with a corresponding socket adapter connection element 11 of the socket adapter 8.

The socket adapter 8 has a plug corresponding to the power connection 5, for example a male or female plug corresponding to the multi-phase alternating current plug of the power connection 5. The multi-phase alternating current plug can in particular be a three-phase alternating current plug. In addition, the multi-phase alternating current plug of the plug adapter 8 can be designed as a dummy plug for at least one electrical phase conductor of the power connection, so that, for example, one, two or three phase conductors are used to provide the electrical energy to the electrical electrical load 4. The socket adapter 8 has a socket on the side opposite the corresponding multi-phase AC plug, which can be designed as a single-phase AC socket 10 and/or as a multi-phase socket 9, in particular a two-phase or a three-phase AC socket. For example, a socket adapter 8 can be provided for country-specific socket types and/or for different socket types.

The multiphase AC socket 9 and/or the single-phase AC socket 10 can be designed according to an IEC standard, in particular according to a CEE standard. The socket adapter 8 can comprise different types of multiphase AC sockets 9 and/or single-phase AC sockets 10 or a combination thereof. By replacing the socket adapter 8, the adapter 1 can be adapted to the different country-specific types of multiphase AC sockets 9 and/or single-phase AC sockets 10. In addition, by replacing the socket adapter 8, the adapter 1 can be adapted to different types of sockets, each with different power levels, such as from a single-phase AC to a three-phase AC or vice versa. This improves flexibility when traveling and when connecting different electrical loads 4 with regard to the output of electrical power at different power levels.

For example, the adapter 1 can be adapted from the electrical power corresponding to a standard three-phase AC connection to an electrical power corresponding to a standard single-phase AC connection. This is achieved by using the appropriate number of corresponding electrical phase conductors for the three-phase AC connection on the one hand and for the single-phase AC connection on the other hand. The remaining electrical phase conductors of the power connection 5 are insulated by the dummy plug of the socket adapter 8 and thus remain unused.

The electrical load 4 is supplied with electrical energy from a battery of the motor vehicle 3 via the socket adapter 8 and/or the adapter 1. For example, a camping stove or an electrically powered tool can be supplied with electrical energy as an electrical load 4 from the charging current connection 2 of the motor vehicle 3 with a socket of the socket adapter 8 that fits a plug of the electrical load 4 via the adapter 1.

2 shows a schematic electrical circuit diagram of the adapter assembly 1 and 8. The adapter 1 is electrically connected to the charging current connection 2 of the motor vehicle 3 via the charging plug 12.

The charging current connection 2 can, for example, be a type 2 charging current connection 2 according to the IEC 62196 standard. The adapter 1 is switched on via the switch S ₁ , whereby the switch S ₁ is closed when switched on, so that the control pilot CP is electrically connected to the proximity pilot PP of the charging current connection 2. For example, an electrical signal specific to the motor vehicle 3 can be impressed on the connection of the proximity pilot PP, which is read out by the on-board charging control unit of the motor vehicle 3 via the control pilot CP and, if a pattern of the electrical signal matches a stored pattern, causes the charging current connection 3 to be activated by the charging control unit.

The proximity pilot PP can be electrically connected to the ground PE via the resistor R, which causes a specific current flow or voltage drop across the connection of the proximity pilot PP. For example, the resistor R can be greater or smaller than the resistance of a charging plug of a charging device, so that the charging control unit of the motor vehicle 3 can recognize the adapter 1 by means of the specific current flow or voltage drop across the resistor R. In addition, the adapter 1 can also have a circuit breaker S ₂ , which is, for example, a thermal circuit breaker. If a threshold value, for example a temperature, is exceeded, the circuit breaker S ₂ is designed to open and interrupt the circuit between the proximity pilot PP and the control pilot CP, which causes the charging current connection 2 to be switched off by the charging control unit of the motor vehicle 3.

The charging plug 12 connects all electrical phase conductors L1, L2 and L3 as well as the neutral conductor N and the protective conductor PE of the charging plug 12 or with the power connection 5 of the adapter 1. The neutral conductor N and the protective conductor PE for the electrical load 4 are provided by the motor vehicle 3.

The power connection 5 can be contacted as required with the plug adapter 8, which can have a multi-phase AC socket 9 or a single-phase AC socket 10. The plug adapter 8 can also have a combination of at least one multi-phase AC ir current socket 9 and/or at least one single-phase alternating current socket 10.

The plug adapter 8 with the multiphase AC socket 9 above in 2 For example, it contacts at least two phase conductors of the power connection 5 or all phase conductors L1, L2 and L3 of the power connection 5 via the plug corresponding to the power connection 5 of the adapter 1. In this way, for example, a power gradation from a three-phase alternating current to a two-phase alternating current can be carried out. The plug adapter 8 can act as a dummy plug for the unused phase conductors of the power connection 5 and isolate them from the environment. The plug adapter 8 can have various types of multi-phase alternating current sockets 9.

The plug adapter 8 below in 2 alternatively has a single-phase AC socket 10 which is supplied with electrical energy from a phase conductor, for example from the phase conductor L1. Alternatively, the single-phase AC socket 10 can be supplied with electrical energy from another phase conductor L2 or L3.

In addition, the plug adapter 8 can have several single-phase AC sockets 10, with each single-phase AC socket 10 being supplied with electrical energy by a respective phase conductor. As a result, different levels of electrical power can be called up from the motor vehicle 3 to supply an electrical load by exchanging the plug adapter 8. In addition, a large number of electrical devices can be supplied with electrical energy.

Where applicable, all individual features shown in the embodiments can be combined and/or exchanged without departing from the scope of the invention.

List of reference symbols

1

adapter

2

Charging current connection

3

Motor vehicle

4

electrical load

5

Power connection

6

Recording

7

Adapter connecting element

8th

Socket adapter

9

Multiphase AC socket

10

Single-phase AC socket

11

Socket adapter connector

12

Charging plug

L1

Phase conductor 1

L2

Phase conductor 2

L3

Phase conductor 3

N

Neutral conductor

P.E.

Grounding

PP

Proximity Pilot

CP

Control Pilot

R

electrical resistance

S1

Power switch

S2

Circuit breaker

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was 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 accepts no liability for any errors or omissions.

Cited patent literature

• DE 102021111945 A1 [0003]
• DE 102021208948 A1 [0004]
• EP 2677607 A1 [0005]
• EP 2690741 A1 [0006]
• JP 2015072869 A [0007]
• FR 3010581 A1 [0008]
• EN 112012006765 T5 [0009]

Claims (12)

Adapter (1) for transmitting electrical energy from a charging current connection (2) of a motor vehicle (3) to an electrical load (4) via at least one power connection (5), wherein the power connection (5) is provided as an interface for the electrical load (4), characterized in that the power connection (5) is designed as a multiphase power connection. Adapter (1) to Claim 1 , characterized in that the multi-phase current connection is designed as a three-phase alternating current connection. Adapter (1) to Claim 1 or 2 , characterized by a receptacle (6) which is designed for a detachable mechanical connection to a socket adapter (8) corresponding to the power connection (5). Adapter (1) to Claim 3 , characterized in that the detachable mechanical connection is designed as a screw and/or a clamp and/or a locking connection. Adapter (1) according to one of the preceding claims, characterized in that the power connection (5) is designed as a multi-phase alternating current socket (9), in particular as a three-phase alternating current socket. Adapter (1) to Claim 5 , characterized in that the multi-phase socket or the three-phase alternating current socket is designed according to an IEC 60309 standard, in particular according to a CEE standard. Adapter (1) according to one of the preceding claims, characterized in that the power connection (5) is designed to provide an electrical power of 7 kW or less for the electrical load (4), in particular in the range from 3.6 kW to 7 kW. Adapter assembly (1, 8) comprising an adapter (1) according to one of the Claims 1 until 7 and a socket adapter (8) which is designed to correspond electrically with the power connection (5) of the adapter (1) and/or to be mechanically connected to the receptacle (6) of the adapter (1). Adapter assembly (1, 8) according to Claim 8 , characterized in that the socket adapter (8) has at least one socket, which is designed as a multi-phase alternating current socket (9) or a single-phase alternating current socket (10). Adapter assembly (1, 8) according to Claim 9 , characterized in that the multi-phase alternating current socket (9) is designed as a three-phase alternating current socket or a two-phase alternating current socket. Adapter assembly (1, 8) according to Claim 9 10, characterized in that the at least one socket is designed according to an IEC 60309 standard, in particular according to a CEE standard. Adapter assembly (1, 8) according to one of the Claims 8 until 11 , characterized in that the socket adapter (8) is designed as a dummy plug for at least one electrical pin of the power connection (5) of the adapter (1).

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