DE102018126949A1 - CHARGING DEVICE FOR ELECTRIC VEHICLES - Google Patents

Abstract

The application relates to a 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) with the charging unit (6) in the assembled state, the electrical connection arrangement (65) comprising a first connection (42), comprising a plurality of first contact elements (43) with a first protective conductor contact (43a), a second to the first connection (42 ) corresponding connection (56) comprising a plurality of second contact elements (59) with a second protective conductor contact (59a), the first contact elements (43) corresponding to the second contact elements (59) such that a connection between the first connection during a manufacturing process (42) and the second connection (56) first a contact connection between the first protective conductor contact (43a ) and the second protective conductor contact (59a) 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) last disconnected becomes.

Description

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. To do this, 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 characterized in particular 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 that can be operated at least partially electrically and comprises a rechargeable electrical storage device.

As mentioned, the extensive expansion of the charging infrastructure is an essential factor for 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. On-site assembly is complex and time-consuming. In addition, an expert is required for the entire assembly of the charging station in the prior art due to the complexity, but in particular for safety reasons. The high voltages (or high currents) applied to the charging stations regularly prevent installation by laypersons.

It is therefore the object of the application to provide a charging device for 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 object is achieved by a charging device for electric vehicles according to claim 1. 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 in such a way that a contact connection is first established between the first protective conductor contact and the second protective conductor contact during a production process of a connection between the first connection and the second contact and / or a connection process between the first connection and the second connection, a contact connection between the first protective conductor contact and the second protective conductor contact is last disconnected.

In contrast to the prior art, an easy-to-install charging device for a charging station is provided in accordance with the application, in that the charging device is formed in a modular manner from a docking station and a charging unit that can be coupled to it, and an electrical connection arrangement is provided that establishes and separates an electrical connection between the guaranteed at least two modules in a safe manner. Safety is ensured by the fact that the electrical connection arrangement is configured in such a way that the respective protective conductor contacts are electrically connected to one another as the first electrical contact connection during a production process of an electrical connection or coupling process between a first connection and a second connection, and the electrical connection is separated during a separation process Connection or decoupling process of the first connection and the second connection always the electrical contact connection of the respective protective conductor contacts is separated as the last contact elements.

The charging device is set up for exchanging electrical energy with electric vehicles and can be installed 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 by means of 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 mutually corresponding connections, 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 here has a protective conductor contact, in particular exactly one protective conductor contact. A protective earth contact, too PE (protective earth) contact, serves to protect a user, especially 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 is closed prematurely with respect to all other contact connections during the establishment of an electrical connection. In a corresponding manner, if this electrical connection is disconnected, 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 is 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 in such a way that when the electrical connection is made, the protective conductor contacts automatically contact first and / or when the electrical connection is disconnected, the protective conductor contacts are automatically separated from one another as the last contact elements of the plurality of contact elements.

Mechanical means, in particular in the form of a suitable locking mechanism, can be provided for mechanically coupling the charging unit to the docking station.

The loading unit may preferably include a tub assembly and a lid assembly. At least one power module can be arranged in the tub assembly. 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 charge control circuit and a charge outlet can also be arranged within the tub assembly. The components arranged in the tub assembly can be sufficient to provide basic functionalities for charging an electric vehicle.

The tub assembly preferably comprises a floor, 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 accommodate 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 power module can be expanded and, in particular, extended protocol functionalities can be implemented. A user interface module makes it possible, in particular, to interact with one To realize users. The power module is preferably set up to provide a power supply for a communication module and / or a user interface module.

The communication module can optionally be connected to a wide area network connection arranged within the docking station. The communication module can also optionally be connected to a connection to a charging network within the docking station. The communication module can also establish 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 a UIB (User Interface Board) module, comprises in particular operating and / or display elements, for example at least one display, one touch display, one pictogram, one capacitive / inductive touch sensor and / or one environmental sensor. These can be controlled and / or read out by the UIB. The UIB can be modularly connected to the ECU module within the charging unit, a basic function of a UIB exclusively having status LEDs for displaying the operating state as a display element and, in the case of additional equipment, at least one of the additional operating and / or display elements mentioned above and / or control.

A circuit board can be arranged as the main board within the docking station and can be coupled to the first connection.

A functional separation between the power electronics and the communication electronics can be provided within the docking station. 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 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 in the assembled state of the charging device 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. This means that 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, whereby connections from two LAN networks operated separately from one another can also be made on a cable and in the respective sockets. This means that two different local networks can be connected via a single cable.

The tub assembly is preferably a tub-shaped housing with side walls or a circumferential side wall. The side walls surround the power module in particular, preferably completely all the way round. A lateral sealing of the tub assembly can thus take place 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, in particular in the area in which a charging socket is arranged. In the event that a permanently attached charging cable is used, a non-wired charging socket can be arranged in the tub assembly in order to act as a "plug garage".

The tub assembly also preferably has a bottom. In the assembled state of the loading device, the bottom of the tub assembly preferably lies against 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 a 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 charging device according to the application, the first connection can be integrated 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 charging device according to the application, it is 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.

In order to be able to use and couple with the same electrical (power) connection arrangement both for three-phase networks and for split-phase networks, 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, wherein In particular, a first of the first main phase conductor contacts has a contact load capacity sufficient for a 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 have three second main phase conductor contacts, a first of the second main phase conductor contacts having a contact load capacity sufficient for a three-phase network, preferably of at least 35 A, and the at least two further second main phase conductor contacts having 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 power supply for 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 plurality of second contact elements can also have at least one second auxiliary phase conductor contact. By establishing a contact connection between the at least one first auxiliary phase conductor contact and the at least one second auxiliary phase conductor contact, the one for the operation of the at least one electrical consumer arranged in the charging unit can be provided and in particular transmitted via this connection.

In particular, the auxiliary phase conductor contacts can supply the control part (electronics) of the charging unit independently of the charging path (energy for the electric vehicle) that 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. This makes it possible, in particular, to send the error status to an external device (e.g. a back-end system, user terminal (e.g. smartphone, laptop etc.)) in order 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 source 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 1A and 2A.

In order to further improve security, according to a preferred embodiment of the charging device according to the application, the plurality of first contact elements can have at least one first main phase conductor contact (eg a previously described main phase conductor contact). The majority of second contact elements can have at least one second main phase conductor contact. The first contact elements can correspond to the second contact elements 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 produced and / or if a connection between the first connection and the second connection is disconnected before the connection between the first protective conductor contact and the second protective conductor contact is disconnected, a contact connection between the at least one first main phase conductor contact and the at least one second Main phase contact can be separated. In other words, in this embodiment, the charging path is only established when the first and second (power) connections are coupled after the protective conductor path or connection has been established and / or the charging path is established when the first and second (power) connections are decoupled before disconnecting the protective conductor path or connection.

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 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 a connection between the first connection and the second connection is disconnected prior to disconnection of the contact connection between the first main phase conductor contact and the 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 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 when the first and second (power) ) Disconnect 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 can be easily connected to the power connector on the docking station, the HPS module is floating. Due to the floating mounting, it is 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 mounted in a floating manner, 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 be installed with the docking station in place Protective housing cover, reach into the interior of the housing. The second connection can be surrounded 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 touching current-carrying and / or voltage-charged components of the charging unit and / or docking station when installing the charging device.

In order to facilitate the coupling of a first connection to the second connection, according to a further embodiment, the first connection can have a first guide module, which can correspond to a second guide module of the second connection. 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 sliding 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 in at least some sections that the protective plate is displaced. 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 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. The provision of 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 particular in the charging station head, which receptacle can be surrounded by peripheral side walls. The docking station can be arranged in this holder. The mains connection cable can be inserted into the docking station within this receptacle.

After installing 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 loading 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 on 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 charging 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, which can be adapted as needed. In particular, it is first necessary for the charging unit to include basic charging control functions. Therefore, a first charge control circuit is arranged in particular on the power module.

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, it is proposed in particular that a communication bus connects the communication module and the user interface module to the power module. If necessary, the communication module and / or the user interface module can be coupled via the communication bus.

The function of the power module, in particular the charging control circuit, is initially independent of this, so that the charging unit can also be set up to provide charging functionalities without a communication module connected to the communication bus. If the communication module is coupled, further functions such as 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 can be formed from hardware components (e.g. processors, interfaces, storage means etc.) and / or software components (e.g. code executable by a processor).

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

• 1 eine schematische Ansicht einer Ladestation;
• 2 eine Explosionszeichnung einer Ladestation mit Docking-Station und Ladeeinheit;
• 3 eine Ansicht einer geöffneten Docking-Station;
• 4 eine Ansicht einer geschlossenen Docking-Station;
• 5 eine Explosionsdarstellung einer Wannenbaugruppe einer Ladeeinheit;
• 6 eine Wannenbaugruppe einer Ladeeinheit im teilweise zusammengebauten Zustand;
• 7 eine Wannenbaugruppe einer Ladeeinheit von unten;
• 8a-c montierte Wannenbaugruppen einer Ladeeinheit ohne Deckel;
• 9 eine Ansicht einer Deckelbaugruppe einer Ladeeinheit;
• 10 eine Unteransicht einer Deckelbaugruppe einer Ladeeinheit;
• 11 eine Schnittansicht einer Deckelbaugruppe einer Ladeeinheit,
• 12 eine schematische Ansicht eines Ausführungsbeispiels eines ersten Anschlusses einer elektrischen Verbindungsanordnung,
• 13 eine schematische Ansicht eines Ausführungsbeispiels eines zweiten Anschlusses einer elektrischen Verbindungsanordnung,
• 14 eine schematische Ansicht eines Ausführungsbeispiels einer elektrischen Verschaltung eines ersten Anschlusses einer elektrischen Verbindungsanordnung,
• 15a eine schematische Ansicht eines Ausführungsbeispiels der elektrischen Verbindungsanordnung in einem ersten Zwischenkopplungszustand,
• 15b eine schematische Ansicht eines Ausführungsbeispiels der elektrischen Verbindungsanordnung in einem zweiten Zwischenkopplungszustand, und
• 15c eine schematische Ansicht eines Ausführungsbeispiels der elektrischen Verbindungsanordnung in einem Kopplungszustand.

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 conjunction with the drawing. The drawing shows:

• 1 a schematic view of a charging station;
• 2nd an exploded view of a charging station with docking station and loading unit;
• 3rd a view of an open docking station;
• 4th a view of a closed docking station;
• 5 an exploded view of a tub assembly of a loading unit;
• 6 a tub assembly of a loading unit in a partially assembled state;
• 7 a tub assembly of a loading unit from below;
• 8a-c assembled tub assemblies of a loading unit without cover;
• 9 a view of a lid assembly of a loading unit;
• 10th a bottom view of a lid assembly of a loading unit;
• 11 2 shows a sectional view of a cover assembly of a loading unit,
• 12th 1 shows a schematic view of an exemplary embodiment of a first connection of an electrical connection arrangement,
• 13 1 shows a schematic view of an exemplary embodiment of a second connection of an electrical connection arrangement,
• 14 1 shows a schematic view of an exemplary embodiment of an electrical connection of a first connection of an electrical connection arrangement,
• 15a 1 shows a schematic view of an exemplary embodiment of the electrical connection arrangement in a first intermediate coupling state,
• 15b 2 shows a schematic view of an exemplary 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.

1 shows an embodiment of a charging station 2nd in the form of a charging station 2nd , with a head in which a shot 2a is provided. The recording 2a the charging station 2nd is to accommodate a docking station 4th and a loading unit 6 intended. The docking station 4th can be included in a manner not described in detail 2a be fixed.

The charging station 2nd can have an electrical network connection to a power supply network (not shown) or another energy source (eg electrical generator), the network connection with the docking station 4th can be connected.

The loading unit 6 can be a housing 29 with a lid 27 exhibit. In particular, the loading unit 6 as an assembly, comprising a tub assembly and a cover assembly, which will be described in more detail below, assembled and onto the docking station 4th put on and preferably at the docking station 4th mechanically fixed.

Together with the mechanical fixation, the loading unit 6 electrically with the docking station 4th be coupled 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 4th and the loading unit 6 can be done via at least one patch cable or the like. This can also be done together with the mechanical fixation.

The docking station is in an installed state 4th preferably completely in the recording 2a added and the loading unit 6 encompasses in particular the outer edge of the docking station 4th (essentially) completely. With its side edges, the loading unit 6 also at least in parts in the recording 2a be let in.

The docking station 4th can, if necessary, also be mounted directly on a wall without the charging station 2nd with the recording 2a necessary is. Even then, the side walls of the docking station 4th preferably at least partially from side walls of the loading unit 6 embraced.

Again 1 the base areas of Docking Station are also shown 4th and loading unit 6 approximately congruent to each other, so that when viewed from the front, the loading unit when assembled 6 the docking station 4th completely covers.

In the present form the docking station 4th and the loading unit 6 a loading device according to the application 3rd .

The modular design of the loading device 3rd in the form of the docking station 4th and the loading unit 6 is exemplary in the 2nd shown in more detail.

In the 2nd is the docking station 4th shown which is a cable entry 8th in a side wall 10th can have. The docking station 4th is through a protective housing cover 12th at least partially on that of the loading unit 6 closed side closed. In the protective housing cover 12th is at least one recess 14a , 14b provided, which will be described in more detail below.

The loading unit 6 can preferably be from a tub assembly 20th and a lid assembly 26 be formed, the outer walls of these assemblies the housing 29 form (e.g. tub floor 41 , all-round 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 4th has a plurality of recesses 16 , especially in the form of openings 16 . For example, between the protective housing cover 12th and the side wall 10th the docking station 4th openings 16 be provided. Through these openings 16 can in particular a corresponding plurality of webs 18th the loading unit 4th , especially the tub assembly 20th , into the docking station 4th be introduced so that the tub assembly 20th and thus the loading unit 6 over the bridges 18th at the docking station 4th can be fixed.

As already explained, the tub assembly 20th with the docking station 4th be coupled. The tub assembly 20th is part of the loading unit 6 , which also includes the cover assembly 26 can have. The tub assembly 20th can in particular a power module 22 as well as a charging socket 24th record, tape. The tub assembly 20th is on the bottom with a bottom 41 essentially closed and is covered by the cover assembly 26 , especially the lid 27 , locked.

In other variants of the registration, a power module can also be arranged in another element of the charging station.

Preferably via locking elements 28 the cover assembly 26 on corresponding locking elements 30th in the surrounding side wall 39 the tub assembly 20th fix. The lid assembly 26 can in their lid 27 a shutter 32 and / or controls, such as a display 96 , exhibit.

The cover assembly is in the assembled or installed state 26 with the tub assembly 20th mechanically joined and thus closes the tub assembly 20th on a top. The tub assembly is on the bottom 20th with the docking station 4th added and over the side walls 10th the docking station 4th a seal between the docking station 4th and the tub assembly 20th respectively.

Between the cover assembly 26 and the tub assembly 20th a seal can be made along the outer edge of the cover assembly 26 is facing.

The docking station 4th serves in particular as a connection level and can be used independently of the loading unit 6 connected to a power supply network or another energy source. As long as the loading unit 6 not with the docking station 4th coupled, it is voltage-free. Via a mechanical coupling of the loading unit 6 with the docking station 4th becomes the loading unit 6 connected to the power supply network in particular also electrically by means of the electrical connection arrangement. The loading 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 structure of the loading device 3rd In particular, it enables the docking station 4th to be assembled by a qualified fitter without the need to directly load a unit 6 to have to assemble.

The loading unit 6 can also be carried out at a later date by a technical layperson in a particularly simple manner, mechanically without tools using the docking station 4th be coupled, which then automatically the loading unit 6 is electrified. The loading unit shown 6 is made from a tub assembly due to its special design 20th and cover assembly 26 , as already explained, is particularly flexible and modular and can be coupled to the respective application.

Like in the 2nd is shown, the docking station 4th a first (power) connection 42 on. In particular, this is in the docking station 4th integrated. A first connection 42 comprises a plurality of contact elements 43 , as will be explained in more detail below.

An exemplary docking station 4th is in the 3rd shown in more detail. The docking station shown 4th has a bottom and side walls 32 and through recesses 16 . A recess 16 is set up to receive one of the respective recess 16 corresponding web 18th a loading unit 6 .

On the floor of the docking station 4th is a main board 34 and an interface board 36 arranged. On the main board 34 is a terminal block 38 provided for connecting a power supply cable.

On the side walls 32 and / or the floor may have tick marks 40 be provided.

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

In addition, there is between the side walls 32 a recording 44 intended. The recording 44 can be closed with a lid. In the recording 44 a measuring device, e.g. a smart meter or an iMS, can be anchored in place. Cable entries through the side walls are not shown the recording 44 to wire the meter. The recording 44 can be sealed with suitable holes, which is not shown in more detail.

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

External wiring to a local network can be carried out via a connection strip, which can then be tapped, for example, via an RJ45 socket. In particular, sufficient contacts are provided here to connect at least two independent local networks. In this case, for example, a first local network can be formed with a center and a second local network between master and slave units, that is to say between a loading unit with a master controller with at least one, preferably a plurality of loading units with only one slave controller. The two local networks can be connected to the charging unit via a single patch cable 6 or the modules arranged therein.

To install the docking station 4th this is initially either mechanical in the recording 2a fixed or screwed to a wall, for example. Then through the cable entry 8th a multi-core power cable into the inside of the docking station 4th introduced. This cable has in particular large 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 installer can attach the cable to the scale 40 put on and cut to length immediately.

This allows the fitter to assemble the connection cable correctly so that he can then connect it to the connection strip without any problems 38 can hang up.

Depending on the packaging, can be in the recording 44 a measuring device can be arranged. This measuring device is based on the terminal block 38 wired 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, wiring is carried out immediately via a flexible cable between the terminal block 38 and the first connection 42 . At the first electrical connection 42 is also a terminal block, which will be described in more detail, for receiving the respective cables.

Via the cable entry 8th a network cable can also be placed in the housing of the docking station 4th be introduced and on the connectors 48 be put on.

After the electrical wiring has been carried out, the housing of the docking station is closed 4th , like in the 4th is exemplified by a protective housing cover 12th .

In the 4th it can be seen that the protective housing cover 12th especially a first recess 14a for the first connection 42 having. Furthermore, in the present exemplary embodiment there is at least one further recess 14b for the communication connections of the interface board 36 provided, 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.

On the side edges of the protective housing cover 12th are also the openings described above 16 or recesses 16 intended. The openings 16 are between the protective housing cover according to the preferred embodiment shown 12th and the side wall 10th the docking station 4th . Through the openings 16 let the webs 18th the tub assembly 20th into the docking station 4th plug in so that webs 18th especially completely from the side wall 10th the docking station 4th are included. The loading unit is through a locking module 6 through the tub assembly 20th inside the docking station 4th mechanically anchored when assembled.

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

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

The tub assembly 20th has a housing 29 with side walls 39 or a circumferential side wall 39 and a floor 41 on. In the area of the side walls 39 , respectively the floor 41 , can preferably be a power module 50 arranged on the bottom and especially in the tub assembly 20th be mechanically anchored. 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 port 52 as well as a charge control circuit 54 .

On the bottom of the power module 50 , as in the 5 is shown, in particular a second electrical connection 56 , in the form of a to the socket 42 corresponding plug 56 , arranged. The second connection preferably has 56 a plurality of second contact elements 59 on that to the first contact elements 43 , especially in number, shape and / or positioning, correspond. So the second contact pins 59 into the first contact elements each formed as recesses 43 be insertable to an electrical coupling of the first and second connection 42 , 56 to reach.

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

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

The connection 60 for the communication bus allows the communication bus with the power module 50 connect to. In the manner of plug-and-play, the communication bus can accommodate both a communication module and a user interface module, which will be described below, and with the power module 50 connect. This enables the power module 50 with the help of the communication module and / or the user interface module, to add modules to the loading unit if necessary 6 to be able to adapt to the respective requirements.

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

The charging socket 70 is in the assembled state immediately above the opening 64 arranged. Through the opening 64 it is possible from the bottom of the tub assembly 20th , through the floor 41 a manual emergency release on the charging socket 70 to make.

For mounting the mounting bracket 68 on the tub assembly 20th becomes the assembly body 68 with its fixatives 66 to the fixatives 62 aligned so that pins 72 can be pushed through the aligned openings. This fixes the pins 72 the receiving body 68 on the housing of the tub assembly 20th .

The power module is in a partially assembled state 50 on the bottom in the tub assembly 20th used as the example 6 shows. This is the second connection 56 in the form of the plug 56 including collar 58 through the bottom recess or opening 74 stuck.

The power module 50 is mechanical with the housing 29 the tub assembly 20th locked and can in particular be floating.

Alternatively or commutatively, it is possible that the main board 34 in the housing of the docking station 4th is floating. The floating bearing has the advantage that there is a mechanical assembly of the tub assembly 20th to the docking station 4th The plug 56 independently to the socket of the power connection 42 can align. This increases the usability and in particular facilitates the assembly or fastening of the loading unit 6 at the docking station 4th by a layperson.

The bottom of the tub assembly 20th is in the 7 shown as an example. It can be seen that the loading unit 6 a plurality of webs 18th having.

In particular, in the 7 realizing that the webs 18th from the ground 41 groundbreaking from the tub assembly 20th stick out. Furthermore, the collar 58 with the plug 56 to recognize him through the opening 74 protrudes.

The collar 58 comes in the assembled state of the loading device 3rd in engagement with the passage or the opening 14a the docking station 4th . In the opening 14a is like in the 4th it can be seen, in particular an annular gap 74 which is between the socket of the first connector 42 and one into the inside of the cradle case 4th protruding collar 78 educated. Through the collar 78 becomes a touch protection for the docking station 4th reached. Security is further improved.

During assembly, the tub assembly 20th to the docking station 4th put on, where, like the combination of 4th and 7 you can see the collar 58 doing so in the annular gap 76 slides. The collar 58 gets into the annular gap 76 , especially before a second contact element 59 of the plug 56 in electrical contact with a first contact element 43 the socket of the first connection 42 is coming. This prevents it from assembling the tub assembly 20th to the docking station 4th can cause an electric shock. In addition, the loading unit 6 aligned so that the webs 18th can engage in the corresponding recesses.

The receiving body 68 is in particular such that it can accommodate a wide variety of charging sockets 70 or, in other words, different charging sockets 70 can with different recording bodies 68 be equipped, each with the fixing means 66 have the same distance from each other and thus a uniform mechanical interface to the fixing means 62 form. This results in one and the same tub assembly 20th various charging sockets 70 can be installed as can be seen from the 8a-c results.

There you can see that the fixative 62 , 64 interlock and over the pens 72 are mechanically locked together.

The 8a shows a receiving body 68 with a CCS charging socket 70 according to IEC 62196, 8b shows a receiving body 68 with a Chademo charging socket 70 and 8c shows a receiving body 68 with a Type2 charging socket 70 according to IEC 62196-2.

As in the 8a-c can be seen, the receiving body makes it possible 68 various charging sockets 70 record without a design change to the housing of the tub assembly 20th to have to make.

The charging sockets 70 do not necessarily have to be electrical with the charging connector 52 connected, but can also remain floating. In this case, the charging sockets 70 serve as a "plug garage". The charging outlet 52 can be electrically attached to the case of the tub assembly 20th attached charging cable. The charging cable can be in the area of a recess 80 in the side wall of the tub assembly 20th be led out.

If no permanently attached cable is used, the charging socket can be used 70 via the charging port 52 electrically with the charge control circuit 54 get connected. The charging port 52 has three connections for one phase each on a terminal block, a further terminal block with two connections for the neutral conductor and the protective conductor and, if necessary, a connection socket for a plug present (PP) contact and a pilot conductor (CP) contact.

To install the charging socket 70 becomes the receiving body 68 on the tub assembly 20th The charging socket is arranged using pre-assembled cables 70 with the respective connections of the charging outlet 52 connected and then the receiving body 68 about the pens 72 in the tub assembly 20th fixed.

The loading unit 6 includes in addition to the tub assembly 20th also the cover assembly 26 as in the 9 is shown as an example. The top of the lid assembly 26 is especially useful as a lid 27 formed and can optionally various controls 82 and / or a shutter 84 have on a top. At the side of the cover assembly 26 , on the side edges, locking elements 86 be provided, which with the inner side walls of the tub assembly 20th can engage. This allows the cover assembly 26 on the tub assembly 20th assemble.

The locking elements 86 can be designed so that they are on the side walls of the tub assembly 20th lock and in particular can only be released non-destructively if they start from the bottom, starting from the floor 41 the tub assembly 20th , be solved. This prevents the cover assembly 26 from the tub assembly 20th is released while the tub assembly 20th still electrically with the main board 34 the docking station 4th connected is.

On the back of the cover assembly 26 is like in 10th Shutter shown as an example 84 stored so that it is in one direction of movement 88 can be moved to the charging socket 70 to release. The shutter 84 is like in the 11 recognizable via a spring 98 spring-loaded so that it automatically moves into the closed position shown.

Another area is in the housing 29 the loading unit 6 , preferably as in 11 shown in the cover assembly 26 a communication module 90 and a user interface module 92 arranged. The communication module 90 as well as the user interface module 92 can on the cover assembly 26 or its housing 29 mechanically fixed.

The communication module 90 is particularly set up for the loading unit 6 , in particular for the charging station, to provide (far-field and / or near-field) communication. In particular, the communication module 90 have a communication antenna in order to be able to carry out wireless communication with devices positioned remotely from the charging station (for example 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 via the communication bus with the power module 50 and in particular the user interface module 92 connected.

The communication module 90 can also optionally have a charging control circuit, not shown, which has electrical access to the charging port 52 Has. The charge control circuit can be the charge control circuit 54 override or at least be coupled to it, so that the two charge control circuits can carry out a control of a charging process in a coordinated manner.

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 especially the inside of the lid 27 facing and preferably mechanically on the housing 29 the cover assembly 26 via click connections, for example 94 connected. The communication module 90 is in turn also via connections, not shown, to the housing 29 the cover assembly 26 connected. Starting from the lid 27 are the user interface module first 92 and then the communication module 90 stacked.

The at least one on the communication module 90 arranged (not shown) communication antenna can, starting from the lid 27 , through the user interface module 92 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, may not be covered.

The user interface module 92 is preferably fixed to the inside of the lid assembly 26 arranged 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, to the cover 27 or the top 27 the cover assembly 26 is guaranteed. Especially a display 96 can be used as an option in the cover assembly 26 be arranged and via the user interface module 92 and / or the communication module 90 can be controlled.

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

The 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 includes a protective conductor contact 43a (also PE called), four main phase conductor contacts 43b and two auxiliary phase conductor contacts 43c . In particular, the phases L1 , L2 , L3 and N the main phase conductor contacts 43b form. The auxiliary phase conductor contacts 43c are in particular by L (also Aux L called) and N (also Aux N called) phases formed.

Through the main phase conductor contacts 43b can be a charging path between docking station 4th and loading unit 6 are produced to provide electrical power to the charging unit 6 to provide connectable electric vehicle. In particular, that is via the main phase conductor contacts 43b transferred electrical power is used only for charging (or discharging) the electric vehicle or from the energy storage device of the electric vehicle.

Via the auxiliary phase conductor contacts 43c can the at least one (previously described) electrical consumer of the charging unit 6 electrical power are provided. The separate power supplies ensure, for example, that in the event of a fault in the charging path, the communication module continues to be supplied with energy, for example in order to communicate the fault to an external device (eg back-end system) via the at least one antenna.

The main phase conductor contacts can preferably 43b be formed such 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 have different minimum contact resilience 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 Table 1 below. Table 1 Contact resilience L1 L2 L3 N PE Aux L Aux N 3 phase 35A 35A 35A 35A 35A 1A 1A Split phase 50A - / - - / - 50A 35A 1A 1A

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 a first management module 45 on. The first management module 45 is present through a recording 45 formed in which a second corresponding guide module 61 a second connection 56 can be introduced.

The first connection 42 can optionally have a protective plate (not shown) which is in an unassembled state of the loading device, that is when the loading unit 6 not at the docking station 4th is fixed, the receptacles or openings of the contact elements 43 closes or covers. In particular, this can provide wire protection so that security can be further improved.

The first management module 44 can in particular be in operative connection with the protective plate in such a way that by inserting the second guide module 61 a displacement of the protective plate along a plane perpendicular to the direction of insertion and thereby the receptacles of the contact elements 43 be released. In particular, the protective plate can be used to hold the contact elements 43 Corresponding openings which automatically hold the contact elements 43 when the second connection is inserted, in such a way that the respective contact elements 43 , 59 can be electrically coupled together.

13 shows a schematic detailed view of an embodiment of a second (electrical) connection 56 according to the present application. The second connection 56 is particularly in a loading unit 6 integrated, especially on the power module 50 the loading unit 6 arranged. The second connection is present 56 in the form of a plug 56 formed to the female connector 42 corresponds.

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 as contact pins 59 formed with conductive surfaces arranged thereon.

The plurality of second contact elements 59 includes a protective conductor contact 59a (also PE called), four main phase conductor contacts 59b and two auxiliary phase conductor contacts 59c . In particular, the phases L1 , L2 , L3 and N the main phase conductor contacts 59b form. The auxiliary phase conductor contacts 59c are especially as phases L (also Aux L called) and N (also Aux N called) formed.

The second contact elements 59 correspond to the first contact elements in particular in their position, dimension and / or shape in such a way that the respective first contact elements 43 with the second contact elements 59 are electrically and mechanically coupled. In particular, the respective contact pins 59 in the corresponding recordings of the first contact elements 43 be used to flow a current across the respective contact elements 43 , 59 to enable.

To increase security, the contact elements are 43 , 59 specially coordinated. The first contact elements 42 are on the second contact elements 59 matched or correspond to them in such a way that during a manufacturing process a connection between the first connection 42 and the second connector 56 first a contact connection between the first protective conductor contact 43a and the second protective conductor contact 43b (Before establishing a respective electrical contact connection between the further contact elements 43b , 43c , 59b , 59c) is established and / or when a connection between the first connection is disconnected 42 and the second connector 56 a contact connection between the first protective conductor contact 43a and the second protective conductor contact 59a is separated last, that is 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.

14 shows a schematic view of an embodiment of an electrical connection of a first connection 42 an electrical connection arrangement 65 according to the present application.

In the present example the first connection is also available 42 over seven first contact elements 43 , in particular a protective conductor contact 43a , four main phase contacts 43b and two auxiliary phase conductor contacts 43c .

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

The protective conductor contact 43a and the phases L1 , L2 , L3 of the main phase conductor contacts 43b are here by an optional protection circuit 47 secured. For example, between the respective connection of the phases L1 , L2 , L3 and the protective conductor PE a protective element, preferably in the form of a gas arrester, may be arranged. A gas arrester is a gas discharge tube, which serves in particular as a surge arrester to protect against surge pulses.

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

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

The 15a to 15c show schematic sectional views of an embodiment of an electrical connection arrangement 65 according to the present application in various coupling states. Starting from the 15a to 15c In particular, a coupling process is shown, while starting from the 15c to 15a a decoupling process is shown.

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 , their respective distance 57a to 57c to a reference surface 63 , in the present case the connector 56 facing top 63 the socket 42 , is different.

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

In the present case, this is achieved in that the distance 57a is less than the further distances 57b , 57c while the lengths of the second contact element pins 59 or their electrically conductive contact surfaces 67a to 67c are the same. It goes without saying that, in the case of other variants of the application, the pins alternatively or additionally have different lengths at the same distances 57a to 57c (or even different distances).

In particular, in the 15a to recognize that the first contact elements 43 to the second contact elements 59 correspond in such a way that during a manufacturing process a connection between the first connection 42 and the second connector 56 first a contact connection between the first protective conductor contact 43a and the second protective conductor contact 59 is established and / or when a connection between the first connection is disconnected 42 and the second connector 59 a contact connection between the first protective conductor contact 43a and the second protective conductor contact 59 last remained.

15b shows the electrical connection arrangement 65 in a second intermediate coupling state.

Like in the 15b It can be seen that 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 is established between the first connection 42 and the second connector 56 (only) after a contact has been established between the first protective conductor contact 43a and the second protective conductor contact 43b (see. 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 main phase conductor contacts 59b) is / is established and / or when a connection between the first connection is disconnected 42 and the second connector 56 before disconnection of the contact connection between the first protective conductor contact 43a and the second protective conductor contact 59a (see. 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 (preferably all second main phase conductor contacts 59b) is / is separated (cf. 15a) .

In the present exemplary embodiment, this is made particularly clear by the differently formed first contact elements (see different distances 57a to 57c) achieved as described above.

15c shows the electrical connection arrangement 65 in a coupling state, in particular an end coupling state.

Like in the 15b It can be seen that 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 connector 56 all contact elements 43 , 59 are each connected to one another, with (only) after a contact connection 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 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 established and / or if a connection between the first connection is disconnected 42 and the second connector 56 before disconnection of the contact connection between the first main phase conductor contact 43b and the second main phase 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. 15b) .

Reference list

2nd

Charging station

2a

admission

3rd

Loading device

4th

Docking station

6

Loading unit

8th

Cable entry

10th

Side wall

12th

cover

14a

Recess or penetration

14b

Recess

16

Recess or opening

18th

web

20th

Tub assembly

22

Power module

24th

Charging socket

26

Lid assembly

27

cover

28

Locking elements

29

Charger housing

30th

Locking elements

32

side walls

34

Mains board

36

Interface board

38

Terminal block

39

Side wall

40

scale

41

ground

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

admission

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 area of a first auxiliary phase conductor contact

56

second connection

57a

Distance of the contact surface of a first protective conductor contact to a reference surface

57b

Distance of the contact area of a first main phase conductor contact to a reference area

57c

Distance of the contact surface of a first auxiliary phase conductor contact to 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 management module

62

fixer

63

Reference surface

64

opening

65

electrical connection arrangement

66

fixer

67

Contact area

68

Receiving body

70

Charging socket

72

pen

74

Recess or opening

76

Annular gap

78

collar

80

Return

82

Control element

84

Shaker

86

Locking element

88

direction

90

Communication module

92

User interface module

94

Click connection

96

Display

Claims (14)

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 state, - The electrical connection arrangement (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 conductor contact (59a), - The first contact elements (43) corresponding to the second contact elements (59) such 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 last disconnected. Loading device (3) after 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). Loading device (3) after Claim 1 or 2nd , characterized in that - the first protective conductor contact (43a) and the second protective conductor contact (59a) have a contact load capacity of at least 35 A. Charging device (3) according to one of the preceding claims, characterized in that - the plurality of first contact elements (43) has at least three first main phase conductor contacts (43b), a first of the first main phase conductor contacts (43b) having a contact rating 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) have three second main phase conductor contacts (59b), a first of the second main phase conductor contacts (59b) having a contact load capacity of at least 35 A and the at least two further second main phase conductor contacts (59b) have a contact load capacity of at least 50 A. Charging device (3) according to one of the preceding claims, characterized in 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), - whereby by establishing 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), the one for the operation of the at least one electrical consumer arranged in the charging unit (6) can be provided. Loading device (3) after 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 1A and 2A. Charging device (3) according to one of the preceding claims, characterized in 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) in such a way 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) establishes 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) and / or when a connection between the first connection (42) and the second connection (59 ) before the contact connection between the first protective conductor contact (43a) and the second protective conductor contact (59a) is disconnected, 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. Loading device (3) after Claim 7 , characterized in 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) have 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) is established 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 disconnected before the contact connection is disconnected between the first main phase guide 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. Charging device (3) according to one of the preceding claims, characterized in that - the first connection (42) is arranged on a main board module (34) of the docking station (4), and - the main board (34) in a housing of the Docking station (4) is floating. Charging device (3) according to one of the preceding claims, characterized in 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) is floatingly mounted in a housing (29) of the charging unit (6). Charging device (3) according to one of the preceding claims, characterized in that - the charging unit (6) has a housing (29) with a base (41), and - the second connection (56) in a recess (74) in the base (41) is arranged, and / or - the docking station (4) has a housing with a protective housing cover (12), and - the protective housing cover (12) has a through-opening (14a), which extends above that in the housing of the docking station ( 4) arranged first connection (42). Loading device (3) after Claim 11 , characterized in that - the protective housing cover (12) has a circumferential collar (78) in the area of the passage (14a), the collar (78) engaging in the interior of the housing in the assembled state, and - the second connection (56) is surrounded 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 charging unit (6) through the base (41) of the housing ( 29) extends through the loading unit (6). Charging device (3) according to one of the preceding claims, characterized in that - the first connection (42) has a first guide module (45) which corresponds to a second guide module (61) of the second connection (56). Charging station, including: - 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.

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