EP3874574A1

EP3874574A1 - Charging device for electric vehicles

Info

Publication number: EP3874574A1
Application number: EP19768749.4A
Authority: EP
Inventors: Christian Müller-Winterberg; Stefan Helnerus
Original assignee: Innogy SE
Current assignee: CCS Abwicklungs AG
Priority date: 2018-10-29
Filing date: 2019-09-09
Publication date: 2021-09-08
Also published as: WO2020088824A1; DE102018126949A1

Abstract

The invention relates to a charging device (3) for electric vehicles, comprising a docking station (4), which is coupled to a charging unit (6) in the installed state of the charging device (3), and at least one electric connection assembly (65) for electrically connecting the docking station (4) to the charging unit (6) in the installed state, wherein the electric connection assembly (65) comprises a first connection (42), which comprises a plurality of first contact elements (43) with a first protective conductor contact (43a), and a second connection (56), which corresponds to the first connection (42) and comprises a plurality of second contact elements (59) with a second protective conductor contact (59a), and the first contact elements (43) correspond to the second contact elements (59) such that a contact connection between the first protective conductor contact (43a) and the second protective conductor contact (59a) is produced first upon establishing a connection between the first connection (42) and the second connection (56) and/or a contact connection between the first protective conductor contact (43a) and the second protective conductor contact (59a) is released last upon releasing a connection between the first connection (42) and the second connection (59).

Description

Charger for electric vehicles

The application relates to a charging device for electric vehicles with a charging unit that can be coupled to a docking station. In addition, the application relates to a charging station with a charging device.

The construction of the charging infrastructure is of crucial importance for the nationwide establishment of electromobility. For this purpose, it is particularly necessary to install large numbers of charging stations for electric vehicles in public and partially public spaces. The charging stations should fit into the street scene and are therefore usually designed as charging stations. Charging stations are particularly characterized by a compact design with a small footprint. The charging stations are usually built in a stele-like manner and have integrated or connectable charging electronics for charging an electric vehicle.

In the present case, an electric vehicle is to be understood as a vehicle which can be operated at least partially electrically and which comprises a rechargeable electrical store. As mentioned, the extensive expansion of the charging infrastructure is a key factor in the acceptance of electromobility. Therefore, charging stations have to be installed across the board and in large numbers in a short time. This is a challenge with regard to the design, the construction and the actual installation on site of the charging stations, since the mass use of the charging stations means that they have to be able to be manufactured on an industrial scale and should be particularly easy to install on site, preferably by a single person. This is only partially the case with known charging stations. So on-site assembly is complex and time-consuming. In addition, for the entire assembly of the charging station in the prior art due to the complexity, but in particular from

A specialist is required for safety reasons. The high voltages (or high currents) applied to the charging stations regularly prevent installation by laypersons.

The application is therefore based on the task of a charging device for

To provide electric vehicles which can be assembled in a simpler and at the same time safer manner, in particular also by laypersons.

According to a first aspect of the application, the task is performed by a

Charging device for electric vehicles according to claim 1 solved. The charging device comprises a docking station coupled to a charging unit in the assembled state of the charging device. The charging device comprises at least one electrical connection arrangement for electrically connecting the docking station to the charging unit in the assembled state. The electrical connection arrangement comprises a first connection, which comprises a plurality of first contact elements with a first protective conductor contact. The electrical connection arrangement comprises a second connection corresponding to the first connection, which comprises a plurality of second contact elements with a second protective conductor contact. The first contact elements correspond to the second

Contact elements such that during a manufacturing process of a connection between the first connection and the second connection, first one

Contact connection between the first protective conductor contact and the second protective conductor contact is established and / or a connection between the first connection and the second connection during a disconnection process

Contact connection between the first protective conductor contact and the second protective conductor contact is last disconnected. In contrast to the prior art, according to the application, an easy-to-install charging device for a charging station is provided by the

Charging device is formed in a module-like manner from a docking station and a charging unit that can be coupled to it, and an electrical connection arrangement is provided which ensures that an electrical connection between the at least two modules is established and disconnected in a safe manner. Safety is ensured in that the electrical connection arrangement is configured in such a way that during the production process of an electrical connection or

Coupling process between a first connection and a second connection, the respective protective conductor contacts are always electrically connected to one another as the first electrical contact connection and, in the event of a separation process of the electrical connection or decoupling process of the first connection and the second connection, always the electrical contact connection of the respective one

Protective conductor contacts are separated as the last contact elements.

The charging device is set up for exchanging electrical energy with electric vehicles and can be installed, in particular, in a charging station when used as intended.

A charging device according to the application comprises a docking station and a charging unit. The docking station is designed in particular as a connection level. The charging unit is in particular formed as a supply level and can preferably be placed on the docking station.

The charging unit can comprise a housing in which the charging technology of the charging unit can be integrated. The housing can preferably be formed by a tub assembly and a cover assembly that can be connected to the tub assembly. The charging technology is connected to an energy supply in the manner of a modular system by mounting or fastening the charging unit to a docking station. This assembly is preferably carried out without tools using the

locking module according to the application. In order to electrically connect the charging unit to the docking station, an electrical connection arrangement is provided according to the application. The electrical connection arrangement is formed from two connections which correspond to one another, that is to say a first electrical connection and a second electrical connection. The electrical connections can preferably be formed as plugs and sockets and accordingly the electrical connection arrangement can in particular be a plug connection.

Each charging port has a plurality of contact elements. For example, a connection can have at least three, preferably at least five, particularly preferably at least seven contact elements.

According to the application, each connection has a protective conductor contact, in particular exactly one protective conductor contact. A protective conductor contact, also called PE (protective earth) contact, serves to protect a user, particularly in the event of an electrical fault occurring in the charging device. For this purpose, the protective conductor is connected to earth or has a corresponding electrical potential.

The first contact elements correspond to the second contact elements in such a way that the protective conductor contact connection between the first

Protective conductor contact and the second protective conductor contact during the establishment of an electrical connection leading over all others

In a corresponding manner, when this electrical connection is disconnected, the contact connections are closed. The protective conductor contact connection between the first protective conductor contact and the second protective conductor contact can be separated last, that is to say only after all other contact connections have already been separated. Corresponding contact elements are to be understood here to mean that the shape, position and / or dimension of the first contact elements are matched to the shape, position and / or dimension of the second contact elements such that the protective conductor contacts are established when the electrical connection is made

contact automatically first and / or when the electrical is disconnected

Connection the protective conductor contacts are automatically separated from each other as the last contact elements of the plurality of contact elements.

For a mechanical coupling of the charging unit to the docking station, mechanical means, in particular in the form of a suitable one

Locking mechanism can be provided.

The loading unit can preferably be a tub assembly and a

Lid assembly may include at least one in the tub assembly

Power module to be arranged. The power module, also called HPS (High Power Safety) module, includes in particular consumers and components that are necessary for power control and monitoring. A first can also be installed inside the tub assembly

Charging control circuit and a charging outlet can be arranged. The in the

Components arranged in the tub assembly may be sufficient

To provide basic functionalities for charging an electric vehicle.

The tub assembly preferably comprises a base, which can face a protective housing cover of the docking station in the assembled state of the charging device. The side of the tub assembly opposite the floor is preferably essentially closed by the lid assembly.

The cover assembly is used in particular to hold at least one

Communication module and at least one user interface module. With the help of the communication module, for example, the charging functions of the Expand the power module and in particular implement extended protocol functionalities. A user interface module makes it possible, in particular, to implement interaction with a user. The power module is preferably set up for a communication module and / or a

To provide a user interface module a power supply.

The communication module can optionally be connected to a wide area network connection arranged within the docking station. It can also

Communication module can optionally be connected to a connection to a charging network within the docking station. The communication module can also be a

Communication in a near field (e.g. Bluetooth, WLAN (Wireless Local Area

Network) etc.).

The communication module, also called ECU (Electronic Control Unit) module, can act as a control computer and communication gateway.

The user interface module, also called U1B (user interface board) module, comprises in particular operating and / or display elements, for example at least one display, one touch display, one pictogram, one each

capacitive / inductive touch sensor and / or an environmental sensor. These can be controlled and / or read out by the U1B. The U1B can be modularly connected to the ECU module within the charging unit, a basic function of a U1B exclusively having status LEDs for indicating the operating state as a display element and having at least one of the additional operating and / or display elements mentioned above in an additional configuration and / or control. A circuit board can be arranged as the main board within the docking station, which can be coupled to the first connection. There can be a functional separation within the docking station

Power electronics and communication electronics may be provided. For this purpose, a circuit board can be set up as an interface board within the docking station in addition to the main board, on which external board

Data connections are connected to corresponding connection sockets. The

Connection sockets can be connected via patch cables, which are inserted into the tub assembly of the charging unit when the charging device is assembled and can be connected there in particular to the ECU module.

The interface board preferably has a connection socket which has connections for a general-purpose input / output bus (GPIO) on the one hand and a CAN bus on the other. As a result, the cabling between the interface board and the ECU module can be carried out particularly easily, since two different buses can be run via a single cable.

A LAN (Local Area Network) is preferably connected between the interface board and the ECU via a patch cable, connections from two LAN networks operated separately from one another also being able to be carried out on a cable and in the respective sockets. This means that two different local networks can be connected using a single cable.

The tub assembly is preferably a tub-shaped housing with side walls or a circumferential side wall. The side walls enclose the power module in particular, preferably all the way round. This means that the tub assembly can be sealed laterally via the side walls. An outlet for a charging cable can be provided in the side wall. A permanently attached charging cable can be connected via the charging connection if no charging socket is to be installed electrically. The outlet of the charging cable is preferably arranged in a recess of a side wall. The side wall can spring back into the interior of the tub assembly, particularly in the area where a charging socket is located. In the event that a permanently attached charging cable is used, a non-wired charging socket can be found in the

Tub assembly to be arranged to act as a "connector garage".

The tub assembly also preferably has a bottom. In the assembled state of the charging device, the bottom of the tub assembly is preferably in contact with a protective housing cover of the docking station. The bottom preferably faces the protective housing cover of the docking station.

The electrical connection arrangement is in particular one

Power connection arrangement comprising a first (power) connection and a second (power) connection. In the present case, a power connection is to be understood in particular to mean that (only) electrical power and in particular no data are exchanged, if necessary in addition to a power, via the corresponding connection.

According to a preferred embodiment of the application

The first connection can be integrated in the charging device in the docking station. The second connection can preferably also be integrated in the charging unit. An integration of a first connection in the docking station and the integration of the second connection in the charging unit have the advantage over a separate connection arrangement that a simple electrical connection between the charging unit and the docking station can be established without additional components.

In addition, in one embodiment of the application

Charging device proposed that the first protective conductor contact and the second protective conductor contact (each) have a contact load capacity of at least 35 A. Such a contact load capacity can further improve security. To have the same electrical (power) connection arrangement for both

To use three-phase networks as well as for split-phase networks and to be able to couple them, it is proposed according to a preferred embodiment of the charging device according to the application that the plurality of first contact elements have at least three first main phase conductor contacts, in particular a first of the first main phase conductor contacts having a contact load capacity sufficient for one three-phase network, preferably of at least 35 A, and the at least two further first main phase conductor contacts have a contact load capacity sufficient for a split-phase network, preferably of at least 50 A.

The plurality of second contact elements can be three second

Have main phase conductor contacts, a first of the second

Main phase conductor contacts a contact resilience sufficient for a

three-phase network, preferably of at least 35 A, and the at least two further second main phase conductor contacts have a contact load capacity sufficient for a split-phase network, preferably of at least 50 A. A corresponding connection arrangement or charging device can be used particularly flexibly, since the requirements for three-phase networks with 3 * 32 A as well as the requirements for split-phase networks with 2 * 50 A are met.

According to a particularly preferred embodiment of the charging device, the charging connection or the charging path can have separate contact elements for exchanging the charging power for an electric vehicle, in particular in the form of the main phase conductor contacts described above, and for the internal power supply or

Have power supply to the consumers located in the charging unit.

The plurality of first contact elements can preferably have at least one first auxiliary phase conductor contact. The majority of second

Contact elements can also have at least one second auxiliary phase conductor contact. By establishing a contact connection between the at least a first auxiliary phase conductor contact and the at least one second

Auxiliary phase conductor contact can be provided for the operation of the at least one electrical consumer arranged in the charging unit and can be transmitted in particular via this connection. In particular, the control part can be controlled by the auxiliary phase conductor contacts

(Electronics) of the charging unit regardless of the charging path (energy for the

Electric vehicle), which is formed by the main phase conductor contacts. The auxiliary phase conductor contacts, also called aux terminals, can be routed separately in the respective connections. If an error occurs (e.g. line protection has dropped) that can deactivate the charging path, the control electronics can still be active due to the separate supply path. In particular, this enables the fault status to be sent to an external device (e.g. a

Send back-end system, user terminal (e.g. smartphone, laptop etc.) to report the error, in particular to draw attention to the error (trouble ticket).

In addition, the self-consumption of the charging unit can be measured separately from the energy consumption in the charging path through the separate auxiliary or auxiliary supply. This is an important piece of information, especially for network operators.

In addition, the at least one first auxiliary phase conductor contact and the at least one second auxiliary phase conductor contact can have a contact load capacity between 0.5 A and 5 A, preferably between 1 A and 2 A.

To further improve security, according to a preferred one

Embodiment of the charging device according to the application, the plurality of first contact elements have at least one first main phase conductor contact (for example a previously described main phase conductor contact). The plurality of second contact elements can have at least one second main phase conductor contact. The first contact elements can be the second contact elements correspond in such a way that when the electrical connection between the first connection and the second connection is established (only) after a contact connection has been established between the first protective conductor contact and the second protective conductor contact, a contact connection between the at least one first main phase conductor contact and the at least one second

Main phase conductor contact can be made and / or if a connection between the first connection and the second connection is disconnected before a separation of the contact connection between the first protective conductor contact and the second protective conductor contact, a contact connection between the at least one first main phase conductor contact and the at least one second

Main phase conductor contact can be separated. In other words, in this embodiment, the charging path is when the first and second are coupled

The (power) connection is only established after the protective conductor path or connection has been established and / or the charging path is disconnected when the first and second (power) connections are decoupled before the protective conductor path or connection is disconnected.

Furthermore, according to a further embodiment of the charging device according to the application, the plurality of first contact elements can have at least one first auxiliary phase conductor contact. The plurality of second contact elements can have at least one second auxiliary phase conductor contact. The first contact elements can correspond to the second contact elements in such a way that when the connection between the first connection and the second connection is established (only) after a contact connection has been established between the at least one first main phase conductor contact and the at least one second main phase conductor contact, a contact connection between the

at least one first auxiliary phase conductor contact and the at least one second auxiliary phase conductor contact can be produced and / or if the connection between the first connection and the second connection is disconnected before the connection between the first main phase conductor contact and the second main phase conductor contact is disconnected at least one first auxiliary phase conductor contact and the at least one second auxiliary phase conductor contact can be separated. In other words, in this embodiment, when the first and second (power) connections are coupled, the internal supply path is only established after the charging path or connection has been established, and / or the internal supply path is established at

Decoupling of the first and second (power) connection before disconnecting the charging path or connection. This further increases the safety when installing a loading device.

According to a further embodiment, the first connection can be arranged on a (previously described) main board module of the docking station. The main board can be floating in a housing of the docking station. For a secure and, in particular, tool-free coupling between the charging unit and the docking station, the circuit board of the main board, on which the first connection can be integrated, can be in particular in the docking station in a plane parallel to the floor of the docking station and / or parallel to the level of the protective housing cover the docking station should preferably be floating.

Furthermore, the second connection can preferably be arranged on a (previously described) power module, in particular in the form of a power circuit board, of the charging unit. The power module can be floating in a housing of the charging unit. As already explained, the power module or HPS module can be formed as a printed circuit board. In order to ensure that the HPS module is particularly easy to connect to the power connector on the docking station, the HPS module is floating. The floating mounting makes it possible to align the first connection and the second connection, in particular in the form of a plug and a socket, of the connection arrangement with one another during assembly of the charging device, in which, with the aid of guide means, the respective printed circuit board, which is floating, if necessary, is shifted in the storage level. According to a further preferred embodiment of the charging device according to the application, the charging unit can have a housing with a bottom, wherein the second connection can be arranged in a recess (or opening) in the bottom. The docking station can have a housing with a protective housing cover, wherein the protective housing cover can have a passage which lies in particular above the first connection arranged in the housing of the docking station (in the assembled state of the protective housing cover).

In order to further increase the safety during assembly of the charging device, according to a preferred embodiment, the protective housing cover can have a circumferential collar in the area of the penetration. The collar can engage in the interior of the housing in the assembled state of the docking station, that is to say with the protective housing cover attached. The second connection can be bordered by a circumferential collar, wherein the second connection can be encompassed by the collar and the collar can extend away from the interior of the charging unit and through the bottom of the housing of the charging unit. This can prevent a user from accidentally carrying current-carrying and / or voltage-carrying components when mounting the charging device

Charging unit and / or docking station can touch.

In order to facilitate the coupling of a first connection to the second connection, according to a further embodiment, the first connection can be a first

Have guide module that to a second guide module of the second

Connection can correspond. This simplifies the insertion of a plug into a socket.

According to a preferred embodiment, one of the guide modules can be a projection and the other guide module can be a corresponding receptacle. Furthermore, the first connection in particular can have a movable protective plate. For example, a projection arranged on the top of the protective plate or a receptacle at the first connection can be provided as the first guide module (at least).

The further guide module can be (at least) a receptacle (or protrusion) corresponding to the protrusion (or the receptacle) of the protective plate. The projection can have at least one first stop surface corresponding to at least one second stop surface of the receptacle, such that by inserting the first connection into the second connection, that is to say in particular the plug into the socket, the first stop surface contacts the at least second stop surface at least in sections in this way that one

Displacement of the protective plate is effected. The contact elements can be released (automatically) by a displacement, while they can be covered when the charging device is decoupled. In particular, a force is exerted from the second stop surface onto the first

Stop surface exercised during the insertion process. By exerting the force, a force deflection is provided, by means of which the protective plate can be displaced in the direction of displacement, in particular along a plane perpendicular to the direction of insertion. Providing a protective plate can further improve safety during assembly.

Another subject of registration is a charging station. The charging station comprises at least one charging station with a holder. The charging station comprises at least one previously described charging device which can be arranged in the receptacle.

The charging station can have a charging station foot and a charging station head. In the case of such a charging station, a receptacle is provided in the charging station head in particular, which receptacle can be surrounded by peripheral side walls therein The docking station can be arranged in the receptacle The mains connection cable can be inserted into the docking station within this receptacle.

After installation of the docking station in the receptacle, an annular gap in particular can form between the side wall of the docking station and the receptacle. A housing wall of the charging unit can engage in this annular gap. If the charging unit is coupled to the docking station in the manner described above and in particular locked, it is placed onto the docking station from above.

All-round side walls of the charging unit can engage in the annular gap, so that it cannot be seen from the outside of the charging column that the charging unit is placed on a docking station.

The charging head can also be formed from two opposing front surfaces, each of which can have a receptacle for a docking station.

As already described, the charging unit comprises a power module (HPS module), a communication module (ECU module) and a

User interface module (UI module), the power module having a first charge control circuit for charging control with an electric vehicle. The requirements for loading units can vary greatly depending on the application. Nevertheless, it is desirable to create a uniform structure of a loading unit as possible, which can be adapted as required. In particular, it is first of all necessary that the loading unit include basic charging control functions. Therefore, a first is in particular on the power module

Charging control circuit arranged.

Additional functions, such as extended loading functionalities, billing, communication, user interaction and the like, may or may not be required as required. For this reason, in particular

proposed that a communication bus the communication module and the User interface module connects to the power module. On the

Communication bus, the communication module and / or the user interface module can be coupled if necessary.

The function of the power module, in particular the charging control circuit, is initially independent of this, so that the charging unit can be operated without one

Communication bus connected communication module can be set up to provide charging functionalities. If the communication module is coupled, further functions, such as, for example, can be carried out

Encryption of accounting data, exchange of loading parameters,

Transmission of information and the like can be made available by the communication module.

It should be noted that devices, modules, etc. according to the application

Hardware components (e.g. processors, interfaces, storage means etc.) and / or software components (e.g. code executable by a processor) can be formed.

The features of the charging devices and charging stations can be freely combined with one another. In particular, features of the description and / or the dependent claims, even with complete or partial circumvention of features of the independent claims, alone or freely combined with one another can be inventive.

There are now a multitude of possibilities for designing and developing the charging device according to the application and the charging station according to the application. For this purpose, reference is made on the one hand to the claims subordinate to the independent claims, and on the other hand to the description of

Exemplary embodiments in connection with the drawing In the drawing:

Figure 1 is a schematic view of a charging station. 2 shows an exploded drawing of a charging station with docking station and charging unit;

3 is a view of an opened docking station; 4 is a view of a closed docking station; 5 is an exploded view of a tub assembly of a loading unit; Fig. 6 shows a tub assembly of a loading unit in part

assembled condition;

7 shows a tub assembly of a loading unit from below; 8a-c assembled tub assemblies of a loading unit without a lid; 9 is a view of a lid assembly of a loading unit; 10 is a bottom view of a lid assembly of a loading unit; 11 shows a sectional view of a cover assembly of a loading unit, FIG. 12 shows a schematic view of an exemplary embodiment of a first

Connection of an electrical connection arrangement,

Fig. 13 is a schematic view of an embodiment of a second

Connection of an electrical connection arrangement, 14 shows a schematic view of an exemplary embodiment of an electrical connection of a first connection of an electrical connection arrangement,

15a is a schematic view of an embodiment of the electrical

Connection arrangement in a first intermediate coupling state,

15b is a schematic view of an embodiment of the electrical

Connection arrangement in a second intermediate coupling state, and

15c is a schematic view of an embodiment of the electrical

Connection arrangement in a coupling state.

Figure 1 shows an embodiment of a charging station 2 in the form of a charging station 2, with a head in which a receptacle 2a is provided. The receptacle 2a of the charging station 2 is provided for receiving a docking station 4 and a charging unit 6. The docking station 4 can be fixed in the holder 2a in a manner not described in detail.

The charging station 2 can be an electrical mains connection to a power supply network (not shown) or another energy source (e.g. electrical

Have generator), wherein the network connection can be connected to the docking station 4.

The charging unit 6 can have a housing 29 with a lid 27. In particular, the charging unit 6 can be an assembly comprising a tub assembly and a lid assembly, which will be described in more detail below.

be assembled and placed on the docking station 4 and preferably mechanically fixed to the docking station 4. Together with the mechanical fixation, the charging unit 6 can be electrically coupled to the docking station 4 via an electrical connection arrangement, comprising a first electrical connection corresponding to a second electrical connection, as will be explained in more detail below.

A communication link between the docking station 4 and the charging unit 6 can take place via at least one patch cable or the like. This can also be done together with the mechanical fixation. In an installed state, the docking station 4 is preferably completely accommodated in the receptacle 2a and the charging unit 6, in particular, completely (essentially) surrounds the outer edge of the docking station 4. With her

Side edges of the charging unit 6 can also be at least partially embedded in the receptacle 2a.

If necessary, the docking station 4 can also be mounted directly on a wall without the charging station 2 with the receptacle 2a being necessary. Even then, the side walls of the docking station 4 are preferably at least partially encompassed by side walls of the charging unit 6.

As can also be seen in FIG. 1, the base areas of the docking station 4 and the charging unit 6 are approximately congruent with one another, so that when viewed from the front, the charging unit 6 completely covers the docking station 4 in the assembled state.

In the present case, the docking station 4 and the charging unit 6 form one

loading device 3.

The modular structure of the charging device 3 in the form of the docking station 4 and the charging unit 6 is shown in more detail by way of example in FIG. 2. FIG. 2 first shows the docking station 4, which can have a cable entry 8 in a side wall 10. The docking station 4 is at least partially closed by a protective housing cover 12 on the side facing the charging unit 6. At least one recess 14a, 14b is provided in the protective housing cover 12, which is described in more detail below.

The loading unit 6 can preferably be formed from a tub assembly 20 and a lid assembly 26, the outer walls of these assemblies forming the housing 29 (e.g. tub floor 41, circumferential side wall 39 and lid 27). It is understood that in other variants of the application, the housing of a loading unit can also be formed in a different form.

The docking station 4 has a plurality of recesses 16,

in particular in the form of openings 16. For example, between the

Protective housing cover 12 and the side wall 10 of the docking station 4 openings 16 may be provided. Through these openings 16 in particular a corresponding plurality of webs 18 of the charging unit 4, in particular the tub assembly 20, can be inserted into the docking station 4, so that the tub assembly 20 and thus the charging unit 6 are fixed to the docking station 4 via the webs 18 can.

As already explained, the tub assembly 20 can be coupled to the docking station 4. The tub assembly 20 is part of the loading unit 6, which can additionally have the cover assembly 26. The tub assembly 20 can in particular accommodate a power module 22 and a charging socket 24. The tub assembly 20 is essentially bottom-side with a bottom 41

closed and is closed on the cover side by the cover assembly 26, in particular the cover 27.

In other variants of the registration, a power module can also be arranged in another element of the charging station. The cover assembly 26 can be attached preferably via latching elements 28

Fix corresponding locking elements 30 in the circumferential side wall 39 of the tub assembly 20. The cover assembly 26 can have a shutter 32 and / or control elements, such as a display 96, in its cover 27. In the assembled or installed state, the cover assembly 26 with the

Tub assembly 20 mechanically joined and thus closes the

Pan assembly 20 on a top. On the bottom side, the tub assembly 20 is joined to the docking station 4, and a seal between the docking station 4 and the tub assembly 20 can take place via the side walls 10 of the docking station 4 when a locking device has been produced by a locking module.

One can be between the cover assembly 26 and the tub assembly 20

Sealing takes place along the outer edge, which is facing the cover assembly 26.

The docking station 4 serves in particular as a connection level and can be connected to an energy supply network or another energy source independently of the charging unit 6. As long as the charging unit 6 is not coupled to the docking station 4, it is voltage-free. Via a mechanical coupling of the

Loading unit 6 with the docking station 4 becomes the loading unit 6 with the

Power supply network in particular also electrically connected by means of the electrical connection arrangement. The charging unit 6 can be understood as a supply level, which in the present case can have charging technology, communication technology and other “intelligence”.

This modular construction of the charging device 3 makes it possible in particular to first mount the docking station 4 by a technician qualified for this purpose, without the need to mount a charging unit 6 directly. The charging unit 6 can also be coupled to the docking station 4 in a particularly simple and mechanically tool-free manner at any later point in time by a technical layman, which then automatically means the charging unit 6

is electrified. The charging unit 6 shown is particularly flexible and modular due to its special design consisting of the tub assembly 20 and the lid assembly 26, as already explained above, and can be coupled to the respective application.

As shown in FIG. 2, the docking station 4 has a first (power) connection 42. In particular, this is integrated in the docking station 4. A first connection 42 comprises a plurality of contact elements 43, such as

will be explained in more detail below.

An exemplary docking station 4 is shown in more detail in FIG. 3. The

Docking station 4 shown has a base and side walls 32 and recesses 16. A recess 16 is designed to receive a web 18 of a loading unit 6 corresponding to the respective recess 16.

In the present case, a main board 34 and an interface board 36 are arranged on the floor of the docking station 4. A connector strip 38 is provided on the main board 34 for connecting an energy supply cable.

Scale lines 40 can be provided on the side walls 32 and / or the floor.

Furthermore, in the present case the first connection 42 is arranged on the main board 34, in particular a first power connection 42 in the form of a socket.

In addition, a receptacle 44 is provided in the present case between the side walls 32. The receptacle 44 can be closed by a lid in the receptacle 44, a measuring device, e.g. a smart meter or an iMS, can be anchored in place. Cable ducts through the side walls of the receptacle 44 are not shown in order to wire the measuring device. The receptacle 44 can be used via suitable

Seals holes, which is not shown in detail.

On an interface board 36, connections 46, 48 are provided for a network cable and for a CAN (Controller Area Network) bus and / or a GPIO (General Purpose Input / Output Bus) bus. In addition, connection sockets can also be provided for a connection to the modules which are arranged within the charging unit 6.

External wiring to a local network can be carried out via a terminal block, which is then e.g. can be tapped via an RJ45 socket. Here are

In particular, sufficient contacts are provided to connect at least two independent local networks. For example, a first local network can be formed with a central office and a second local network

Network between master and slave units, that is between a loading unit with a master controller with at least one, preferably several loading units with only one slave controller. The two local networks can be connected together via a single patch cable to the charging unit 6 or the modules arranged therein.

To install the docking station 4, it is first mechanically either fixed in the receptacle 2a or, for example, screwed to a wall.

A multi-core power cable is then inserted through the cable entry 8 into the interior of the docking station 4. This cable in particular has large ones

Cable cross sections and a rigid cable core. Therefore, the cables are usually difficult to process.

To ensure that the cables are always cut to the correct length, the fitter can lay the cable on the scale 40 and cut it to length immediately. This allows the fitter to assemble the connecting cable correctly so that he can then place it on the connecting bar 38 without any problems.

Depending on the assembly, a measuring device can be arranged in the receptacle 44. This measuring device is wired from the terminal block 38 via flexible cables. Starting from the measuring device, cabling is again carried out via flexible cables to the first power connection 42. If no measuring device is installed, then there is a wiring via a flexible cable between the terminal strip 38 and the first connection 42. There is also a first electrical connection 42 Terminal block that closer

is described, provided for receiving the respective cables.

Via the cable entry 8, a network cable can also be inserted into the housing of the docking station 4 and placed on the connections 48.

After the electrical wiring has been carried out, the housing of the docking station 4 is closed by a protective housing cover 12, as shown by way of example in FIG. 4. FIG. 4 shows that the protective housing cover 12 in particular has a first recess 14a for the has first connection 42. Furthermore, in

In the present exemplary embodiment, at least one further recess 14b is provided for the communication connections of the interface board 36, in particular an RJ45 connector and a GPIO connector and a CAN bus connector. Via the RJ45 socket 46, an RJ45 plug can establish a connection with two separate LAN networks.

In the present case, the openings 16 or recesses 16 described above are also provided on the side edges of the protective housing cover 12. According to the preferred exemplary embodiment shown, the openings 16 are located between the protective housing cover 12 and the side wall 10 of the docking station 4. Through the openings 16, the webs 18 of the tub assembly 20 can be inserted into the docking station 4, so that these webs 18 in particular completely from the

Side wall 10 of the docking station 4 are added. Through a

Locking module, the charging unit 6 is anchored mechanically by the tub assembly 20 within the docking station 4 in the assembled state.

After the docking station 4 has been installed in the manner shown, it can initially remain empty, protected by the protective housing cover 12, and can be equipped at any later time with a charging unit 6, for example having a tub assembly 20 and a lid assembly 26.

A tub assembly 20 is shown in more detail in an equipment variant in FIG. 5.

The tub assembly 20 has a housing 29 with side walls 39 or a circumferential side wall 39 and a bottom 41. A power module 50 can preferably be arranged on the bottom side in the region of the side walls 39, or the bottom 41, and in particular can be mechanically anchored in the tub assembly 20. The power module 50 can be formed in particular as a printed circuit board with consumers and / or components arranged thereon and / or consumers and / or components integrated therein.

The power module 50 preferably has a charging connection 52 and one

Charge control circuit 54.

On the underside of the power module 50, as also shown in FIG. 5, there is in particular a second electrical connection 56, in the present case in the form of a plug 56 corresponding to the socket 42. The second connection 56 preferably has a plurality of second contact elements 59, which belong to the correspond to first contact elements 43, in particular in number, shape and / or positioning. Thus, the second contact pins 59 can each be used as

First contact elements 43 formed in recesses can be inserted in order to achieve an electrical coupling of the first and second connection 42, 56.

In the present case, a collar 58 is arranged all around the plug 56. The collar 58 points away from the surface of the circuit board of the power module 50. In particular, the collar 58 has an extension in this direction that is greater than the longest extension of each contact element or pin 59 of the plug 56.

Additional components for power monitoring and / or power control can be provided on the power module 50. In addition, a connection 60 for a communication bus is arranged on the power module 50.

The connection 60 for the communication bus enables the

Communication bus to connect to the power module 50. The

Communication bus can be both a plug and play type

Communication module as well as a user interface module, which

will be described below, record and connect to the power module 50. This makes it possible to use the power module 50

To supplement the communication module and / or the user interface module in a modular manner in order, if necessary, to be able to adapt the charging unit 6 to the respective requirements.

The power module 50 is arranged, in particular, in a first area of the base 41. In a second area of the base 41, a fixing means 62 is provided in the present case, which is formed from flanges arranged in a comb-like manner with openings aligned with one another. The fixing means 62 shown is formed from two opposing comb-like structures which enclose an opening 64 in the base 41. The at least one fixing means 62 corresponds to at least one fixing means 66 of a receiving body 68 for a charging socket 70.

The charging socket 70 is arranged directly above the opening 64 in the assembled state. Through the opening 64, it is possible from the bottom of the

Tray assembly 20 to make a manual emergency release on the charging socket 70 through the floor 41.

To mount the fastening body 68 on the tub assembly 20, the mounting body 68 with its fixing means 66 becomes the fixing means 62 in this way

aligned that pins 72 can be pushed through the aligned openings. As a result, the pins 72 fix the receiving body 68 to the housing of the tub assembly 20. In a partially assembled state, the power module 50 is inserted into the tub assembly 20 on the bottom side, as shown by way of example in FIG. In this case, the second connection 56 in the form of the plug 56 together with the collar 58 is inserted through the bottom-side recess or opening 74.

The power module 50 is mechanically locked to the housing 29 of the tub assembly 20 and can in particular be floatingly mounted therein.

Alternatively or commutatively, it is possible for the main board 34 to be floatingly mounted in the housing of the docking station 4. The floating bearing has the advantage that, when the tub assembly 20 is mechanically mounted on the docking station 4, the plug 56 is automatically connected to the socket of the

Power connector 42 can align. This increases the usability and in particular facilitates the assembly or fastening of the charging unit 6 to the docking station 4 by a layperson. The underside of the tub assembly 20 is shown as an example in FIG. 7. It can be seen that the charging unit 6 has a plurality of webs 18. In particular, it can be seen in FIG. 7 that the webs 18 protrude from the tub assembly 20 pointing away from the floor 41. Furthermore, the collar 58 with the plug 56 can be seen as it protrudes through the opening 74.

In the assembled state of the charging device 3, the collar 58 engages with the passage or the opening 14a of the docking station 4. In the opening 14a, as can be seen in FIG first connection 42 and a collar 78 projecting into the interior of the housing of the docking station 4. A protection against contact of the docking station 4 is achieved by the collar 78. Security is further improved.

During assembly, the tub assembly 20 is placed on the docking station 4, the collar 58 sliding into the annular gap 76, as can be seen from the combination of FIGS. 4 and 7. The collar 58 comes into the annular gap 76, in particular before a second contact element 59 of the plug 56 comes into electrical contact with a first contact element 43 of the socket of the first connection 42. This prevents an electric shock from occurring when the tub assembly 20 is mounted on the docking station 4. In addition, the charging unit 6 is aligned in such a way that the webs 18 can engage in the corresponding recesses.

The receiving body 68 is in particular such that it is for receiving

A wide variety of charging sockets 70 is set up, or in other words, a wide variety of charging sockets 70 can be equipped with different receptacle bodies 68, the fixing means 66 being at an equal distance from one another and thus forming a uniform mechanical interface to the fixing means 62. this leads to to the fact that different charging sockets 70 can be installed in one and the same tub assembly 20, as can be seen from FIGS. 8a-c.

It can be seen there that the fixing means 62, 64 engage in one another and are mechanically locked together via the pins 72.

FIG. 8a shows a receiving body 68 with a CCS charging socket 70 according to 1EC 62196, FIG. 8b shows a receiving body 68 with a Chademo charging socket 70 and FIG. 8c shows a receiving body 68 with a Type 2 charging socket 70 according to 1EC 62196-2.

As can be seen in FIGS. 8a-c, the receiving body 68 makes it possible to accommodate a wide variety of charging sockets 70 without having to make a structural change to the housing of the tub assembly 20.

The charging sockets 70 do not necessarily have to be electrically connected to the charging connection 52, but can also remain potential-free. In this case, the charging sockets 70 can serve as a “plug garage”. The charging outlet 52 can be electrically connected to a charging cable firmly attached to the housing of the tub assembly 20 The charging cable can be led out in the region of a recess 80 in the side wall of the tub assembly 20.

If no permanently attached cable is used, the charging socket 70 can be electrically connected to the charging control circuit 54 via the charging connection 52. The charging connection 52 has three connections for one phase each on a connection strip, a further connection strip with two connections for the

Neutral conductor and the protective conductor and if necessary via a connection socket for a plug present (PP) contact and a pilot conductor (CP) contact.

To install the charging socket 70, the receiving body 68 on the

Tub assembly 20 arranged, the pre-assembled cable Charging socket 70 connected to the respective connections of the charging outlet 52 and then the receiving body 68 via the pins 72 in the

Tub assembly 20 fixed.

In addition to the tub assembly 20, the charging unit 6 also includes the

Cover assembly 26, as shown in the example in FIG. 9. The upper side of the cover assembly 26 is in particular formed as a cover 27 and can optionally have a wide variety of operating elements 82 and / or a shutter 84 on an upper side. Laterally, the cover assembly 26, on the side edges, can

Locking elements 86 may be provided, which with the inner side walls of the

Tray assembly 20 can engage. This allows the

Mount the cover assembly 26 on the tub assembly 20.

The latching elements 86 can be designed such that they latch onto the side walls of the tub assembly 20 and in particular can only be released non-destructively if they are released from the underside, starting from the bottom 41 of the tub assembly 20. This prevents the cover assembly 26 from being detached from the tub assembly 20 while the tub assembly 20 is still electrically connected to the main board 34 of the docking station 4.

On the back of the cover assembly 26, as shown by way of example in FIG. 10, the shutter 84 is mounted such that it can be moved in a direction of movement 88 in order to release the charging socket 70. As can be seen in FIG. 11, the shutter 84 is spring-loaded via a spring 98, so that it automatically moves into the closed position shown. In a further area, a communication module 90 and a user interface module 92 are arranged in the housing 29 of the charging unit 6, preferably, as shown in FIG. 11, in the cover assembly 26. The communication module 90 as well as the user interface module 92 can be mechanically fixed to the cover assembly 26 or its housing 29. The communication module 90 is in particular set up to provide (far-field and / or near-field) communication for the charging unit 6, in particular for the charging station. In particular, the communication module 90 can provide one

Communication antenna to enable wireless communication with devices positioned away from the charging station (e.g. back-end system, mobile

User terminal, etc.). The at least one

Communication antenna can be a far field antenna or a near field antenna, for example an LTE antenna, GSM antenna, WLAN antenna, Bluetooth antenna and / or GPS antenna.

The communication module 90 is (for internal communication) preferably connected via the communication bus to the power module 50 and in particular the user interface module 92.

The communication module 90 can also optionally have a charging control circuit (not shown in more detail) that provides electrical access to the

Charging port 52 has. The charge control circuit can override the charge control circuit 54 or at least be coupled to it, so that the two

Charging control circuits can coordinate control of a charging process.

Figure 11 shows a preferred embodiment of the communication module 90 and the user interface module 92 in the housing 29, preferably in the cover assembly 26. The user interface module 92 is in particular facing the inside of the cover 27 and preferably mechanically on the housing 29 of the cover assembly 26 via e.g. Click connections 94 connected. The

Communication module 90 is in turn also connected to the housing 29 of the cover assembly 26 via connections (not shown). Starting from the cover 27, the user interface module 92 and then the communication module 90 are arranged in a stack. The at least one communication antenna (not shown) arranged on the communication module 90 can, starting from the cover 27, through the

User interface module 92 may be at least partially, preferably predominantly, uncovered. In particular, at least 50% of the antenna area of the

Communication antenna, preferably at least 70% of the antenna area of the communication antenna, particularly preferably 100% of the antenna area of the communication antenna, must not be covered.

The user interface module 92 is preferably arranged in a stationary manner on the inside of the cover assembly 26, so that an exact positioning of the at least one component of the user interface module 92, in particular the at least one user interface antenna, is relative to the cover 27 or the

Top 27 of the cover assembly 26 is guaranteed. In particular, a display 96 can be arranged as an option in the cover assembly 26 and via the

User interface module 92 and / or the communication module 90 can be controlled.

FIG. 12 shows a schematic detailed view of an exemplary embodiment of a first (electrical) connection 42 according to the present application. The first connection 42 is in particular integrated in a docking station 4, in particular arranged on the main board 34 of the docking station 4. In the present case, the first connection 42 is in the form of a plug socket 42.

The plug socket 42 comprises a plurality of first contact elements 43, in the present case in particular seven contact elements 43. The first contact elements 43 are each formed by a recess and an electrically conductive surface arranged therein, as will be described in more detail below.

The plurality of first contact elements 43 include a protective conductor contact 43a (also called PE), four main phase conductor contacts 43b and two Auxiliary phase conductor contacts 43c. In particular, phases LI, L2, L3 and N can form main phase conductor contacts 43b. The auxiliary phase conductor contacts 43c are formed in particular by L (also called Aux L) and N (also called Aux N) phases.

The main phase conductor contacts 43b can be used to establish a charging path between the docking station 4 and the charging unit 6, in order to provide electrical power with an electric vehicle that can be connected to the charging unit 6 used by the energy storage device of the electric vehicle.

Electrical power can be provided to the at least one (previously described) electrical consumer of the charging unit 6 via the auxiliary phase conductor contacts 43c. Through the separate power supplies

For example, it ensures that in the event of an error in the charging path

Communication module continues to be supplied with energy, for example, to communicate the fault to an external device (e.g. back-end system) via the at least one antenna.

The main phase conductor contacts 43b can preferably be formed in such a way that they can be used for different networks, in particular at least for a three-phase network and a split-phase network. To make this possible, the various main phase conductor contacts 43b can have different minimum contact load values. Exemplary contact load values for a three-phase network with 3 * 32 A and split-phase networks with 2 * 50 A are shown in

shown in Table 1 below.

Table 1

It goes without saying that the corresponding second contact elements of the second connection can have corresponding contact load values.

Furthermore, the first connection 42 has a first guide module 45. In the present case, the first guide module 45 is formed by a receptacle 45, into which a second corresponding guide module 61 of a second connection 56 can be inserted.

The first connection 42 can optionally have a protective plate (not shown) which, in an unassembled state of the charging device, that is to say when the charging unit 6 is not fastened to the docking station 4, closes or hides the receptacles or openings of the contact elements 43, in particular can thereby provide wire protection so that security can be further improved.

The first guide module 44 can, in particular, be operatively connected to the protective plate in such a way that by inserting the second guide module 61, the protective plate is displaced along a plane perpendicular to the direction of insertion and the receptacles of the contact elements 43 are thereby released. In particular, the protective plate can be released have openings corresponding to the receptacles of the contact elements 43, which are automatically pushed over the receptacles of the contact elements 43 when the second connection is introduced, such that the respective contact elements 43, 59 can be electrically coupled to one another.

FIG. 13 shows a schematic detailed view of an exemplary embodiment of a second (electrical) connection 56 according to the present application. The second connection 56 is in particular integrated in a charging unit 6, in particular arranged on the power module 50 of the charging unit 6. The second is present Connection 56 is formed in the form of a plug 56, which corresponds to the socket 42.

The plug 56 comprises a plurality of second contact elements 59, in the present case in particular seven contact elements 59. The second contact elements 59 are each formed as contact pins 59 with conductive surfaces arranged thereon.

The plurality of second contact elements 59 comprise a protective conductor contact 59a (also called PE), four main phase conductor contacts 59b and two

Auxiliary phase conductor contacts 59c. In particular, phases LI, L2, L3 and N can form main phase conductor contacts 59b. The auxiliary phase conductor contacts 59c are formed in particular as phases L (also called Aux L) and N (also called Aux N).

The second contact elements 59 correspond to the first contact elements, in particular in terms of their position, dimension and / or shape, such that the respective first contact elements 43 can be electrically and mechanically coupled to the second contact elements 59. In particular, the respective contact pins 59 can be inserted into the corresponding receptacles of the first contact elements 43 are used to allow current to flow through the respective contact elements 43, 59.

In order to increase safety, the contact elements 43, 59 are specially matched to one another. The first contact elements 42 are matched to the second contact elements 59 or correspond to them in such a way that with one

Establishing a connection between the first terminal 42 and the second terminal 56 first establishes a contact connection between the first

Protective conductor contact 43a and the second protective conductor contact 43b (before one

Establishing a respective electrical contact connection between the further contact elements 43b, 43c, 59b, 59c) and / or if a connection between the first connection 42 and the second connection 56 is disconnected, a contact connection between the first protective conductor contact 43a and the second protective conductor contact 59a last is separated, i.e. after a separation of the respective electrical contact connections between the further contact elements 43b, 43c, 59b, 59c. This is described in more detail below.

Figure 14 shows a schematic view of an embodiment of a

electrical connection of a first connection 42 of an electrical

Connection arrangement 65 according to the present application.

In the present example, too, the first connection 42 has seven first contact elements 43, in particular a protective conductor contact 43a, four

Main phase conductor contacts 43b and two auxiliary phase conductor contacts 43c.

As can be seen, the first connection 42 is connected to a main phase conductor connection 51 and an auxiliary phase conductor connection 49 (which can be electrically coupled to the connection 38, for example).

The protective conductor contact 43a and the phases LI, L2, L3 of the main phase conductor contacts 43b are protected by an optional protective circuit 47. For example, a protective element, preferably in the form of a gas arrester, can be arranged between the respective connection of the phases LI, L2, L3 and the protective conductor PE. A gas arrester is a gas discharge tube that serves as a surge arrester to protect against surge pulses.

In addition, a further optional protective element, preferably in the form of a fuse (e.g. a slow blow fuse), can be arranged in the connection of the phase Aux L between the first connection 42 and the auxiliary phase conductor connection 49.

The protective conductor PE is also grounded. In particular, the protective conductor PE can be connected to a shield contact 53.

Figures 15a to 15c show schematic sectional views of a

Embodiment of an electrical connection arrangement 65 according to the present application in various coupling states. Starting from FIG. 15a to FIG. 15c, a coupling process is shown in particular, while starting from FIG. 15c to FIG. 15a, a decoupling process is shown.

FIG. 15a shows an example of the electrical connection arrangement 65 in a first intermediate coupling state.

The first contact elements 43 have electrically conductive contact surfaces 55a to 55c, the respective distance 57a to 57c of which is different from a reference surface 63, in the present case the upper side 63 of the plug socket 42 facing the plug 56.

In order to ensure that the respective protective conductor contact elements 43a, 59a always contact each other in front of all other contact elements, the electrically conductive contact surface 55a of the first protective conductor contact 43a is formed in such a way that this surface 55a comes into contact with the protective conductor contact pin 59a before a contact connection between one of the other contact elements is present.

This is achieved in the present case in that the distance 57a is less than the further distances 57b, 57c, while the lengths of the second contact element pins 59 or of their electrically conductive contact surfaces 67a to 67c are the same. It goes without saying that, in other variants of the application, the pins can alternatively or additionally have different lengths at the same distances 57a to 57c (or else different distances). In particular, it can be seen in FIG. 15a that the first contact elements 43 correspond to the second contact elements 59 in such a way that with one

Establishing a connection between the first connection 42 and the second connection 56 first establishes a contact connection between the first

Protective conductor contact 43a and the second protective conductor contact 59 is made and / or if a connection between the first connection 42 and the second connection 59 is disconnected, a contact connection between the first

Protective conductor contact 43a and the second protective conductor contact 59 remained last.

Figure 15b shows the electrical connection arrangement 65 in a second

Interconnect state.

As can be seen in FIG. 15b, the first contact elements correspond to the second contact elements in such a way that in the second

Intermediate coupling state, when the electrical connection between the first connection 42 and the second connection 56 is established (only) after a contact connection has been established between the first protective conductor contact 43a and the second protective conductor contact 43b (see FIG. 15a), a contact connection between the at least one first main phase conductor contact 43b (preferably all first main phase conductor contacts 43b) and the at least one second main phase conductor contact 59b (preferably all second ones

Main phase conductor contacts 59b) is / is established and / or if a connection between the first connection 42 and the second connection 56 is disconnected before the contact connection between the first protective conductor contact 43a and the second protective conductor contact 59a (see FIG. 15a) is disconnected, a contact connection between the at least one first main phase conductor contact 43b (preferably all of the first main phase conductor contacts 43b) and the at least one second main phase conductor contact (preferably all of the second

Main phase conductor contacts 59b) is / is separated (see FIG. 15a).

In the present exemplary embodiment, this is particularly the case

differently formed first contact elements (see different

Distances 57a to 57c) reached, as described above. FIG. 15 c shows the electrical connection arrangement 65 in a coupling state, in particular an end coupling state.

As can be seen in FIG. 15b, the first contact elements correspond to the second contact elements in such a way that when a connection or coupling is established between the first connection 42 and the second connection 56, all contact elements 43, 59 are connected to one another, whereby (only) after a contact has been established between the at least one first main phase conductor contact 43b and the at least one second

Main phase conductor contact 59b a contact connection between the at least one first auxiliary phase conductor contact 43c (preferably all of the first

Auxiliary phase conductor contacts 43c) and the at least one second

Auxiliary phase conductor contact 59c (preferably all second

Auxiliary phase conductor contacts 59) is produced and / or if a connection between the first connection 42 and the second connection 56 is disconnected before the contact connection between the first is disconnected

Main phase conductor contact 43b and the second main phase conductor contact 59b a contact connection between the at least one first auxiliary phase conductor contact 43c and the at least one second auxiliary phase conductor contact 59c is separated (cf. FIG. 15b).

Reference symbol list

2 charging stations

2a recording

3 loading device

4 Docking station

6 loading unit

8 cable entry

10 side wall

12 lids

14a recess or penetration

14b recess

16 recess or opening

18 bridge

20 tub assembly

22 power module

24 charging socket

26 cover assembly

27 lid

28 locking elements

29 Charger housing

30 locking elements

32 side walls

34 main board

36 interface board

38 Terminal strip

39 side wall

40 scale

41 floor

42 first connection

43 plurality of first contact elements 43a first protective conductor contact

43b first main phase conductor contacts

43c first auxiliary phase conductor contacts

44 recording

45 first management module

46 Connection socket

47 Protection circuit

48 connections

49 Auxiliary phase conductor connection

50 power module

51 Main phase conductor connection

52 Charging port

53 shield contact

54 Charge control circuit

55a contact surface of a first protective conductor contact

55b contact area of a first main phase conductor contact

55c contact surface of a first auxiliary phase conductor contact

56 second connection

57a distance of the contact surface of a first protective conductor contact to one

Reference surface

57b Distance between the contact surface of a first main phase conductor contact and a reference surface

57c Distance between the contact surface of a first auxiliary phase conductor contact and a reference surface

58 collar

59 plurality of second contact elements

59a second protective conductor contact

59b second main phase conductor contacts

59c second auxiliary phase conductor contacts

60 connection

61 second guidance module 62 fixative

63 reference surface

64 opening

65 electrical connection arrangement 66 fixing means

67 contact surface

68 receiving body

70 charging socket

72 pen

74 recess or opening

76 annular gap

78 collar

80 return

82 Control element

84 shakers

86 locking element

88 direction

90 communication module

92 User interface module 94 Click connection

96 display

Claims

Patent claims

1. Charging device (3) for electric vehicles, comprising:

a docking station (4) coupled to a charging unit (6) in the assembled state of the charging device (3),

at least one electrical connection arrangement (65) for electrically connecting the docking station (4) to the charging unit (6) in the assembled

Status,

the electrical connection assembly (65) comprising:

a first connection (42) comprising a plurality of first contact elements (43) with a first protective conductor contact (43a), a second connection (56) corresponding to the first connection (42) comprising a plurality of second contact elements (59) with a second Protective earth contact (59a),

wherein the first contact elements (43) correspond to the second contact elements (59) in such a way that during a manufacturing process of a connection between the first connection (42) and the second connection (56), first a contact connection between the first

Protective conductor contact (43a) and the second protective conductor contact (59a) is produced and / or in the event of a disconnection process of a connection between the first connection (42) and the second connection (59), a contact connection between the first protective conductor contact (43a) and the second protective conductor contact (59a ) is separated last.

2. Loading device (3) according to claim 1, characterized in that

the first connection (42) is integrated in the docking station (4),

and or

the second connection (56) is integrated in the charging unit (6).

3. Charging device (3) according to claim 1 or 2, characterized in that the first protective conductor contact (43a) and the second protective conductor contact (59a) have a contact rating of at least 35 A.

4. Loading device (3) according to one of the preceding claims, characterized

characterized that

the plurality of first contact elements (43) have at least three first ones

Main phase conductor contacts (43b), a first of the first

Main phase conductor contacts (43b) have a contact load capacity of at least 35 A and the at least two further first main phase conductor contacts (43b) have a contact load capacity of at least 50 A, and

the plurality of second contact elements (59) three second

Main phase conductor contacts (59b), a first of the second main phase conductor contacts (59b) having a contact rating of at least 35 A and the at least two further second main phase conductor contacts (59b) having a contact rating of at least 50 A.

5. Loading device (3) according to one of the preceding claims, characterized

characterized that

the plurality of first contact elements (43) has at least one first auxiliary phase conductor contact (43c),

the plurality of second contact elements (59) has at least one second auxiliary phase conductor contact (59c),

wherein the establishment of a contact connection between the at least one first auxiliary phase conductor contact (43c) and the at least one second auxiliary phase conductor contact (59c) enables the at least one electrical consumer arranged in the charging unit (6) to be provided.

6. Loading device (3) according to claim 6, characterized in that the at least one first auxiliary phase conductor contact (43c) and the at least one second auxiliary phase conductor contact (59c) have a contact load capacity between 0.5 A and 5 A, preferably between 1 A and 2 A.

7. Loading device (3) according to one of the preceding claims, characterized

characterized that

the plurality of first contact elements (43) has at least one first main phase conductor contact (43b),

the plurality of second contact elements (59) has at least one second main phase conductor contact (59b), and

the first contact elements (43) correspond to the second contact elements (59) such that when the electrical connection is established between the first connection (42) and the second connection (56) after a contact connection has been established between the first protective conductor contact (43a) and the second protective conductor contact (59a), a contact connection is established between the at least one first main phase conductor contact (43b) and the at least one second main phase conductor contact (59b) and / or if a connection between the first connection (42) and the second connection (59) is disconnected a separation of the

Contact connection between the first protective conductor contact (43a) and the second protective conductor contact (59a) a contact connection between the at least one first main phase conductor contact (43b) and the at least one second main phase conductor contact (59b) is separated.

8. Loading device (3) according to claim 7, characterized in that

the plurality of second contact elements (59) has at least one second auxiliary phase conductor contact (59c), and

the first contact elements (43) correspond to the second contact elements (59) such that when the connection between the first connection (42) and the second connection (59) after a contact has been established between the at least one first

Main phase conductor contact (43b) and the at least one second

Main phase conductor contact (59b) a contact connection is established between the at least one first auxiliary phase conductor contact (43c) and the at least one second auxiliary phase conductor contact (59c) and / or if a connection between the first connection (42) and the second connection (59) is separated before one Disconnection of the contact connection between the first main phase conductor contact (43b) and the second

Main phase conductor contact (59b) a contact connection between the at least one first auxiliary phase conductor contact (43c) and the at least one second auxiliary phase conductor contact (59c) is separated.

9. Loading device (3) according to one of the preceding claims, characterized

characterized that

the first connection (42) is arranged on a main board module (34) of the docking station (4), and

the main board (34) is floatingly mounted in a housing of the docking station (4).

10. Loading device (3) according to one of the preceding claims, characterized

characterized that

the second connection (56) is arranged on a power module (50), in particular in the form of a power circuit board (50), of the charging unit (6), and the power module (50) in a housing (29) of the charging unit (6)

is floating.

11. Loading device (3) according to one of the preceding claims, characterized

characterized that

the charging unit (6) has a housing (29) with a base (41), and the second connection (56) is arranged in a recess (74) in the base (41),

and or

the docking station (4) has a housing with a protective housing cover (12), and

the protective housing cover (12) has a passage (14a) which lies above the first connection (42) arranged in the housing of the docking station (4).

12. Loading device (3) according to claim 11, characterized in that

the protective housing cover (12) in the area of the passage (14a)

having a circumferential collar (78), the collar (78) engaging in the interior of the housing in the assembled state, and

the second connection (56) is bordered by a circumferential collar (58), the second connection (56) being encompassed by the collar (58) and the collar (58) pointing away from the interior of the loading unit (6) through the floor (41) of the housing (29) of the charging unit (6) extends through.

13. Loading device (3) according to one of the preceding claims, characterized

characterized that

the first connection (42) has a first guide module (45) which corresponds to a second guide module (61) of the second connection (56).

14. Charging station, comprising:

at least one charging station (2) with a receptacle (2a), and

at least one charging device (3) which can be arranged in the receptacle (2a) according to one of the preceding claims.