EP3802198A1

EP3802198A1 - Charging unit for electric vehicles

Info

Publication number: EP3802198A1
Application number: EP19711035.6A
Authority: EP
Inventors: Stefan Helnerus; Christian Müller-Winterberg
Original assignee: Innogy SE
Current assignee: CCS Abwicklungs AG
Priority date: 2018-05-30
Filing date: 2019-03-07
Publication date: 2021-04-14
Also published as: US20210107368A1; DE102018112954A1; WO2019228687A1

Abstract

The invention relates to a charging unit for electric vehicles, comprising a tub subassembly and a lid subassembly, wherein the tub subassembly has at least one power module, a first charge control circuit and at least one charge outlet, and wherein the lid subassembly is configured to receive at least one communication module and at least one user interface module.

Description

Charging unit for electric vehicles

The subject matter relates to a charging station for electric vehicles, a docking station for charging stations and a charging unit in a charging station as well as modules installed in a charging unit.

The construction of the charging infrastructure is of crucial importance for the nationwide establishment of electromobility. For this purpose, it is necessary to install in public as well as in part public spaces charging stations for electric vehicles to a large extent. The charging stations should fit into the streetscape and are therefore usually designed as charging stations. Charging columns are characterized by a compact design with a small footprint. The charging stations are usually stela-like and have integrated or connectable charging electronics. As mentioned, the extensive expansion of the charging infrastructure is a key factor in the acceptance of electromobility. Therefore charging stations must be installed as widely as possible and in large numbers in a short time. This is a challenge with regard to the design, construction and actual installation on site of the charging stations, since the mass use of the charging stations they must be produced on an industrial scale and particularly easy, preferably by a single person, should be installed on site.

This is only partially the case with previous charging stations. On the one hand, the on-site assembly is complex and expensive, on the other hand, the electronics in the charging stations can not be produced inexpensively and in large quantities.

For a particularly simple installation of charging technology, it is also necessary that this can be installed with little effort and by inexperienced. Of the Connection to the power supply should be as possible from the other

Charging technology be decoupled to ensure that even laymen can install charging technology. Also the possible maintenance as well as the exchange of

Charging technology, which is required for example by defects or technology change, should be simplified as possible.

Based on the above-mentioned problem objectively a charging unit for electric vehicles is proposed according to claim 1.

The charging unit can be set up as a supply level on a docking station designed as a connection level. For this purpose, the loading unit comprises a

Tub assembly and a lid assembly. The tub assembly together with the lid assembly forms a housing in which the charging technology for the charging unit is housed. The connection of the charging technology to a power supply takes place in the manner of a modular system by mounting the charging unit on a docking station. This assembly is preferably done without tools.

At least one power module is arranged in the tub module. The

Power module, also referred to as HPS module (High Power Safety Module), includes components that are necessary for power control and performance monitoring.

Within the tub assembly may also have a first

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

Tub assembly arranged components may be sufficient

To provide basic functionalities for charging an electric vehicle. The tub assembly includes a bottom which in the assembled state faces a protective housing cover of the docking station. The the ground

opposite side of the tub assembly is preferred by the

Lid assembly substantially closed. The cover assembly serves to receive at least one communication module and at least one User interface module. With the help of the communication module, the charging functions of the power module can be extended and in particular extended

Implement protocol functionalities. A user interface module makes it possible to realize an interaction with a user. The power module provides a power supply for a communication module as well as a user interface module. The communication module can optionally be connected to a wide area network connection within the docking station. Also, the communication module may optionally be connected to a port on a charging network within the docking station. Also, the communication module may establish communication in a near field.

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

The user interface module, also referred to below as UIB (User Interface Board), comprises operating and / or display elements, for example, in each case at least one display, a touch display, a pictogram, a

capacitive / inductive touch sensor and / or an environmental sensor. These can be controlled and / or read by the UIB. The UIB can be modularly connected to the ECU module, with a UIB in a basic function

has only status LEDs for displaying the operating state as a display element and in a multi-component at least one of the additional, above-mentioned control and / or display elements have and / or control.

The charging unit can be coupled with a docking station via a power connection without tools. Within the docking station for this purpose, a circuit board can be arranged as Mains Board, which has the power connection. For a secure tool-free coupling between the loading unit and

Docking Station can either be the main board's circuit board in the docking station in a plane parallel to the floor of the docking station and / or parallel to it Level of the protective housing cover of the docking station or the HPS module be floating in a plane parallel to the bottom of the tub assembly floating.

Within the docking station can be a functional separation between the

Power electronics and communication electronics take place. For this purpose, within the docking station next to the Mains Board a circuit board as

Interfaces (interface) board to be set up on which external

Data connections are connected to corresponding connection sockets. The

Connection sockets can be connected via patch cords, which are inserted into the tub assembly and connected there in particular to the ECU module.

The interface board preferably has a connection socket which has connections for a first general purpose input / output bus (GPIO) on the one hand and a CAN bus on the other hand. This makes the wiring between the interface board and the ECU module particularly easy, since two different buses can be routed via a single cable.

The connection of a LAN between the interface board and the ECU is preferably carried out via a patch cable, wherein on a cable and in the respective sockets also connections of two mutually separately operated LAN networks can be performed. Thus, a connection of two different local networks is possible over a single cable.

The tub assembly is preferably a tub-shaped housing with side walls. The side walls surround the power module circumferentially, preferably completely encircling. Thus, via the side walls, a lateral sealing of the

When assembly. In the sidewall, an outlet for a charging cable can be provided. A permanently connected charging cable can be connected via the charging port if no charging socket is to be electrically installed. 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, especially in the area in which a charging socket is arranged. In the event that a hard-docked charging cable is used, a non-wired charging socket can be placed in the tub assembly to act as a "plug garage".

The tub assembly also preferably has a bottom. in the

assembled state is the bottom of the tub assembly adjacent to the

Protective housing cover of docking station. Preferably, the soil is the

Protective housing cover facing the docking station.

As already explained, the HPS module can be formed as a printed circuit board. Around

make sure that the HPS module is particularly easy to use

Coupling the power connection to the docking station, the HPS module is floating. Due to the floating mounting, it is possible to align plug and socket of the power connection to each other during assembly, in which, with the aid of guide means, the respective printed circuit board, which is mounted floating, is optionally displaced in the plane of storage.

Like the docking station, the charging unit also has a power connection. This is arranged on the HPS module. The power port is preferably a port corresponding to the power port on the docking station. The power connections correspond to one another according to the socket-plug principle, wherein the power connection on the HPS module is preferably formed as a plug, whereas the power connection is formed on the docking station as a socket.

The power connection is in a recess in the bottom of the

Tub assembly arranged. In order to prevent at least one contact of the power connection being exposed so that it could be touched by a user during the mounting of the charging unit on the docking station, during which the power connections are also inserted, it is proposed that the power connection of the HPS module through a circumferential collar The collar preferably fully surrounds the power port and extends away from the interior of the well assembly through the bottom thereof. The collar may be located on the floor itself or on the PCB of the HPS module. The collar preferably has a length which corresponds approximately to the length of the longest contact of the power connection. Thus, the power port is only open at the bottom and laterally through the collar

enclosed and concealed at the top by the PCB of the HPS module. This ensures sufficient contact protection for tool-free mounting of the charging unit on the docking station.

Further, the bottom of the tub assembly may have an opening provided in the region of the charging socket. The opening may be as a recess for receiving the charging socket. The opening makes it possible, in particular, to operate the charging socket manually from the underside, that is, from the ground, in particular to unlock it. In the event of a fault, a charging plug inserted in the charging socket can be locked. As a rule, this lock is unlocked by an energized emergency release. In the event of a power failure, however, this release can be inoperative. Since the emergency unlocking should ensure that the charging unit is de-energized, the emergency release is suggested from the ground. Because the

Emergency release then e.g. is only possible from the ground, it is necessary to remove the charging unit from the docking station. In this case, the electrical connection between the power connections of docking station and charging unit is necessarily disconnected, so that the charging unit is necessarily de-energized and the mechanical emergency release can be performed safely.

The loading unit should be as modular as possible, so that a variety of

Equipment variants can be operated as needed. This also means that different charging sockets should be receivable from the tub assembly. Therefore, a modular receptacle for the charging socket is proposed, which is preferably operated without tools. For this purpose, a receptacle for a charging socket is provided in the tub assembly, wherein the receptacle fixing for releasably fixing the charging socket to the tub assembly. The charging socket can with correspondingly corresponding fixatives in the

Be arranged tub assembly. For this purpose, the charging socket as on a

Be arranged receiving body. The receiving body has a larger footprint than any charging socket. The charging socket is preferably arranged centrally in a surface of the receiving body. The receiving body is designed so that it can accommodate a variety of types of charging sockets. However, the fixing means corresponding to the fixing means of the receiving body, which form the interface, are identical for all different charging sockets. This is achieved in that the receiving body is dimensioned so that the interface remains unchanged even with changed charging sockets. As a result, a modularity is achieved because the charging unit can accommodate and operate a variety of types of charging sockets. The receiving body are adapted to receive mutually different charging sockets. Charging sockets can be in particular according to type 1, 2 or 3 as well as CCS according to IEC 62196 or even a chademo. Other types of

Charging sockets can also be arranged in the receiving body.

The fixing means in the tub assembly are preferably comb-shaped

Flanges formed with mutually aligned openings. Corresponding fixing means may be provided on the receiving body of the charging socket or the charging socket. On the receiving body of the charging socket also comb-shaped flanges can be provided, which interact with the flanges of the fixing and engage in this. Through the openings of the flanges, the

aligned with each other, pins can be used, so that the receiving body or the charging socket form-fitting manner to the fixing means and thus the

Tub assembly can be fixed.

For fixing the charging unit to the docking station, it is proposed that there are base-side webs on the tub assembly which extend away from the interior of the tub assembly. The webs can be engaged in

Recesses may be set up at the docking station. By inserting the bars in the recesses on the docking station, the webs can be positively fixed to the docking station.

For performance monitoring, the HPS module can have at least one circuit breaker. The power module can in particular have a sensor for monitoring the neutral conductor as well as the ground conductor and / or one

Misfire circuit breaker and / or a short circuit protection switch and / or a welding detection sensor have. All of these sensors can have switching functions or control a switch.

On the circuit board of the power module, the first charging control circuit, a charging outlet and the circuit breaker may be arranged. The charging outlet is wired so that the charging socket can be connected to the charging outlet via terminals. In particular, the phases LI, L2, L3 as well as neutral PE and ground conductor N can be contacted at the charging outlet. In addition, the charging outlet may include a CP and a PP terminal, which terminals may be disposed in a connector remote from the power terminals.

According to one embodiment, it is proposed that the first

Charge control circuit on the power module for communicating with a

Electric vehicle on an energy conductor, in particular by means of pulse width modulation is set up. The first charge control circuit allows in particular a

Communication according to DIN 61851. This charging control includes a

Basic functionality to be able to initially negotiate the readiness to charge with an electric vehicle.

As already explained, the charging outlet serves to connect either one

Charging socket or a charging cable firmly attached to the tub assembly. The charging outlet is disposed in the tub assembly and arranged with a disposed on the tub assembly, led out of the tub assembly Charging cable connected or with a charging socket in the tub assembly

connected. The charging outlet preferably comprises a terminal block with terminals for the individual phases, a neutral conductor and a protective conductor on the one hand and an at least two-pole connector for receiving PP and CP terminals.

As already explained, the tray assembly can be closed by the lid assembly, with the exception of the charging socket. In the lid assembly, the communication module and the user interface module can be accommodated. When mounting the user interface module or communication module in the cover assembly, starting from the cover surface, first the user interface module and then the communication module can be arranged. Thus, the user interface module is sandwiched between the lid surface and the communication module.

The communication module and the user interface module are preferably each formed on a separate circuit board. This increases the modularity of the charging unit, since the communication module as well as the user interface module can each be fitted separately from one another in the cover assembly. Thus, as needed, either a communication module or a

User interface module or both modules are arranged in the cover assembly. In addition, the temperature management is significantly optimized. With the power module at the bottom of the tub assembly and the communication module and / or the user interface module in the lid assembly, the modules are spaced apart so that temperature management within the tub assembly can be optimized.

The cover assembly preferably corresponds completely to the

Tub assembly, in particular, the base areas of the lid assembly and tub assembly are such that the lid assembly rests completely in the mounted state on the tub assembly. For fixing locking element are provided in particular on the side walls of the cover assembly, which at Lock inside of the side walls of the tub assembly. As a result, the cover assembly is connectable to the tub assembly. The locking elements may be such that a fixing takes place by a rear engagement. Further, the locking elements may be such that they can only be solved on the bottom side so only in a mechanically detached from the docking tub assembly. This increases safety, since there is always a contact protection by the cover assembly and the cover assembly is not of the

Can bucket assembly can be lifted as long as the tray assembly rests on the bottom side of the docking station. Only when the tub assembly has been removed from the docking station and thus imperatively the charging unit is free of electrical voltage, the cover assembly of the tub assembly can be solved by releasing the locking elements.

According to one exemplary embodiment, it is proposed that the communication module and the user interface module are arranged in a first region of the cover surface, and that in a second region, corresponding to

Charging socket in the tub assembly a shutter is arranged on the lid surface. The shutter has a movable element, which is on the inside of the

Lid assembly is slidable. The shutter can be spring-loaded, so that it is always in a closed position when unloaded. By sliding it manually, the shutter can be slid parallel to the inner surface of the lid assembly, thereby releasing an opening that is immediately above the loading socket. As a result, a charging plug can be inserted into the charging socket. After removal of the charging plug, an automatic closing of the shutter can be ensured by the spring elements.

According to one embodiment, it is proposed that the

User interface module is attached to the inside of the lid surface.

In particular, the user interface module is fixedly attached to the lid surface of the lid assembly. On the circuit board of the user interface module can on the lid surface facing side signalers and / or Be arranged signal sensors. On the outside of the lid surface can

Controls or displays are provided. The mechanical fixation of the user interface module to the cover assembly ensures that the sensors and / or signal transmitters of the user interface module are aligned with controls or displays arranged on the outside of the cover surface and that the relative positioning to each other is always correct.

The communication module and / or the user interface module are attached to the lid assembly. An attachment to the tub assembly takes place exclusively indirectly via the attachment of the cover assembly to the

When assembly. Thus, communication module and

User interface module mechanically connected to the power module only indirectly via the connection between the cover assembly and tub assembly.

An electrical connection between the communication module and / or

User interface module with the power module via at least one flexible cable.

The communication module has a second charge control circuit. This second charging control circuit is for communicating with an electric vehicle via a pilot conductor. For this purpose, the second charging control circuit can access at least the pilot conductor of the charging outlet. In particular, the second acts

Charge control circuit according to DIN 15118. Other higher quality protocols are also possible. The second charge control circuit is the first

Charge control circuit in particular so connected that the second

Charge control circuit can override the first charging control circuit. Also, a parallel operation is possible, so that both a communication via the first charge control circuit, as well as the second charge control circuit can take place, in which case the first charge control circuit with the second charge control circuit

is synchronized. According to one embodiment, it is proposed that the

Communication module has an encryption module. The

Encryption module is formed in particular as a TPM module. The

Encryption module can be used to encrypt measured values of the measuring device installed in the docking station. For this purpose, a connection between a measured value output of the measuring device in the docking station and the

Encryption module via a corresponding patch cable done. The

Encryption module can encrypt measured values received and received by the meter (Smart Meter, iMS) and, if necessary, via a

Forward wide area network to a billing center.

The docking station has a trough-shaped housing with a bottom and circumferential side walls. Furthermore, the docking station has a cable entry leading into the housing. The cable entry can be both in the

Sidewalls and be arranged in the ground. As the docking station is for installation either directly on a wall or in a receptacle, e.g. can be arranged in a stela is arranged, the cable entry is either arranged laterally in the side walls or at the bottom.

Within the housing of the docking station at least one connection strip for a power cable is arranged. On this connector bar can the

Power cord, for example, multi-phase, for example, single-phase or three-phase, be placed together with, for example, a neutral and / or a protective conductor. The terminal block is preferably arranged at the bottom of the housing. In addition to the connection strip for a power cable, a contact strip or a connection socket for a network connection, for example, according to the Cat 5, Cat 6 or Cat 7 standard or the like may be provided. The network connection allows a connection with a local network formed externally of the docking station or with a wide area network, for example DSL, ADSL or the like. To be able to form a local network (charging network) with additional charging stations starting from the docking station and at the same time connected to a network which is external to the charging network, the network connection can be set up to connect two independently operable networks.

To simplify the installation of charging technology, a systematic separation between a connection level for the power engineering and a supply level for charging technology is proposed. In this case, the docking station, in particular taking advantage of the terminal block, as a connection level for a power supply network and has within the housing in particular a receptacle for an energy meter, e.g. an intelligent measuring system (iMS) or a smart meter. The housing of the docking station separates them

Connection level for the power grid from the supply level for the charging technology in that in the docking station, a power connection is provided for a arranged outside the docking docking unit. Of the

Power port has in particular a jack with several

Connection contacts, which can be contacted with one phase of the power cable, the neutral conductor and optionally a protective conductor.

In addition, a rectifier or rectifier may be provided within the docking station, the at least two additional terminals of the

Power terminal applied, and over which arranged outside the docking station charging technology may optionally receive additional electrical power.

The separation between the connection level and the supply level makes it possible to allow the layman to install the charging technology. In practical terms, it is only necessary that the docking station or the connection of the docking station to the power cable is carried out by a qualified fitter. After this connection has been made, the housing of the

Charging station are largely closed. Another installation of

Charging is not necessary at first. The docking station as such does not have any "intelligence" in the sense of being able to perform charge control, rather, a charging unit that is separate from the docking station can be easily and conveniently connected by a layperson to the docking station via the power port at a later date. Since the mains connection is located to the power supply network within the docking station, there is no risk of electric shock by the one who couples the charging unit with the docking station.

It is proposed that the docking station can be coupled to a charging unit. This charging unit serves as a supply level for a charging technology and in particular has a charging control circuit. Depending on the application, different requirements may apply to the charging technology. A universally applicable docking station, which secures the high-voltage connection to the electrical supply network, offers the advantage that with such a docking station differently configured charging units can be mechanically and electrically connected. This means that initially only docking stations must be installed and the charging technology then to the docking station

can be coupled.

If newer or changed charging technology becomes necessary, it is possible to simply decouple the charging unit from the docking station and to couple a new charging unit to the docking station via the power connection. If the charging unit is also encapsulated in a separate housing, the docking of the charging unit to the docking station can be done by a technical layman.

This has particular advantages in the installation process, since the provision of the

Charging unit can be decoupled in time from the installation of the docking station. Any layperson, after having been installed by a specialist in a docking station, can couple the appropriate charging technology to the docking station through a suitable charging unit. This makes the installation process much easier for the charging technology provider. In a simple Installation step, the docking station is connected to the power grid. Thereafter, the installation can be terminated by a layman.

The connection level is free of charge technology for an electric vehicle. The

Connection level is provided within the housing of the docking station. The connection level is set up to receive the power cord. For this purpose, a possibility of fixation and strain relief can be provided in addition to the cable entry. In addition, the connection level takes up the terminal strip for the power cable. Furthermore, the connection level for receiving the

Energy meter and the power connection for connection to the charging unit set up. The connection level is designed so that the

Energy counter can be optionally included. An initial configuration of the docking station may provide that the power connector is directly connected to the power connector via the terminal block. A second configuration of the docking station may provide that the mains connection is first connected to the energy meter via the terminal block and from there to the

Power connection is connected.

Inside the housing of the docking station, a receptacle surrounding the energy meter is peripherally surrounded by side walls. Within the side walls of the receptacle, cable penetrations for power cables to and from the energy meter can be located between the terminal block and the power supply

Energy meter on the one hand and the energy meter and the

On the other hand. Due to the fact that the receptacle is provided, the energy meter may optionally be sealed off from the interior of the housing, which is necessary, for example, for tamper-proof measurement of electrical energy. In addition, in the side walls of the receptacle cable bushings for a communication cable can be, with which the energy counter can be read. A protocol for reading the energy quantity counter may be SML and / or TLS. The receptacle may be closed by a lid which is removable. The lid may have a receptacle for a seal together with the side walls. After the energy meter has been installed in the receptacle and has been connected electrically, the receptacle for the energy meter can be closed by the lid. Subsequently, a seal can be made, so that a subsequent access to the energy counter is no longer possible nondestructive.

To install the energy quantity meter in the receptacle, this may have latching lugs in the region of an edge of the side walls facing away from the bottom in order to latch the energy supply meter. In particular, a tool-free installation of the energy meter within the docking station is possible, which greatly simplifies its installation.

According to one embodiment, it is proposed that in one of the

Housing releasably arranged protective housing cover a passage is arranged, which lies in the connected to the side walls of the state in the housing disposed power port. To close the docking station, the protective housing cover is placed on the docking station. The electrical

Connections within the docking station should be protected against contact from the outside, so that as few penetrations as possible are provided in the protective housing cover. A first penetration may be located spatially above the power connection. The power connection itself can be protected against contact with its connection contacts, as is usual with connection sockets for power cables.

In addition to the passage over the power connection, a further access can be in the area of a communication connection in order to be able to connect the charging unit, if appropriate, to the wide area network and / or the charging network. Further penetrations are preferably not present, so that the protective housing cover substantially closes the housing, in particular in the areas in which electrical lines run within the housing between the terminal block, the energy meter and / or the power connection.

In general, the protective housing cover is at a distance from the

Power connection, in particular its upper edge lie. In order to prevent a manual penetration through the gap formed between the protective housing cover and the power connection, ie between the lower edge of the

Protective housing cover and the upper edge of the power connection, it is proposed that the protective housing cover in the region of the passage of the

Protective housing cover has a first circumferential collar, wherein the collar engages in the assembled state in the interior of the housing. It is also possible that the power connection has a circumferential collar, which projects in the assembled state from the interior of the housing into the passage of the protective housing cover. In particular, the collar has a depth that corresponds at least to the distance between the underside of the protective housing cover and the top of the power connection. The collar can also be larger and extend up to the carrier, in particular the printed circuit board, on which the power connection is mounted.

When mounting the charging unit on the docking station, a power plug of the charging unit can be plugged into a socket-shaped power connection. In order to ensure a contact protection at the moment of insertion of the plug into the socket, the power connector of the charging unit is also protected by a circumferential second collar. This second collar can engage according to an advantageous embodiment in an annular gap, which is formed in the assembled state of the protective housing cover circumferentially between the first collar and the power port.

For a manual control of the meter reading and / or for the possibility of reading a counter identification, it is proposed that in the housing and / or in the protective housing cover in the region of the receptacle for the Energy meter is an aperture arranged as a viewing window for a reading range of an energy quantity meter.

The power cable of the mains connection is usually a rigid cable with only a single stranded wire. The cable usually has a cable cross-section of at least 2.5 mm ² , but preferably beyond, for example, 6 mm ² , 10 mm ² , 16 mm ² or the like. Such a rigid sheathed cable is difficult to bend and therefore difficult to install. To make sure the installation of the

Power cord is performed on the terminal block error-free and in particular the wiring is simplified, it is proposed that a scale is arranged on the bottom and / or the side walls of the housing of the docking station. This scale is used to cut to length the mains connection cable routed through the cable entry into the housing. The scale is spaced from the cable entry, that the power cord for connection to the terminal block can be assembled. This means that the installer can connect the power supply cable to the scale and cut it to length, thus ensuring that he / she has the power cord

Power cord after stripping can strike exactly on the terminal block. Over or under lengths of the cut-off power cord are thus avoided, so that incorrect installations are almost impossible.

As already explained at the beginning, the docking station should serve as a connection level and be mechanically connectable to a charging system formed as a supply level. For this it is suggested that the side walls and / or the

Protective housing cover has receptacles which cooperate with fastening means of a charging unit in such a way, in which case in particular the charging unit rests completely on the protective housing cover of the docking station. The charging unit is installed on the docking station "in layers", in which the charging unit rests completely on the docking station as a further "layer". The base of the docking station is essentially congruent with the base of the loading unit. After the docking station has been closed, the charging unit can easily be "docked" to the docking station via the attachment means Top view then covers the docking station completely or substantially completely, in particular covers the charging unit all electrical components within the housing of the docking station.

In order to prevent access to the fastening means from the outside, it is proposed that the receptacles for the fastening means between the

Side walls and the protective housing are arranged. In particular, on the outer peripheral edge of the protective housing cover radially inwardly facing recesses are provided, in which the fastening means can be inserted. Thus, the Befestigungsmitte] are enclosed within the side walls of the docking station.

The fastening means may preferably up to the outside of the bottom of the

Housing the docking station are pushed through to be fixed there. For this reason it is suggested that in the bottom of the housing to the

Receiving openings corresponding openings are provided, wherein the openings and the receptacles are aligned with each other. Then, in a linear, parallel to the longitudinal extension of the fastening means extending movement

Fastening means are introduced through the receptacles in the bottom-side openings. This makes the installation of the charging unit on the docking station particularly easy.

As already explained, the docking station represents the connection level, whereas the charging unit represents the supply level. To make the installation between the charging unit and docking station particularly simple, the docking station has only connections for a power connection and preferably also a communication connection. For this reason, only a power connection and preferably a communication connection are formed between the docking station of the charging unit. The power connection is over the

Power connection formed, the communication connection via, for example, a network cable. The loading unit encloses the housing walls of the docking station preferably circumferentially. Only in the region of a cable inlet and / or a cable outlet can a recess be provided in the docking station comprising the side walls of the loading unit.

The protective housing cover preferably returns from the upper level of the docking station, so that the side walls in the assembled state of the

Protective cover overhang this collar. This makes it possible to ensure by the sidewalls sealing the docking station by

for example, in the loading unit corresponding to the side walls

circumferential sealing lips are provided, which are pressed in the mounted state against the edges of the side walls. The fact that the protective housing cover springs back ensures that the sealing lips completely surround the side walls.

Another aspect relates to a charging station with a charging base and a Ladesäulenkopf and a docking station as described. In this charging station, a receptacle is provided in the charging column head, which is surrounded by circumferential side walls. In this recording, the docking station can be arranged. Within this receptacle, the power cord may be inserted into the docking station.

After installation of the docking station in the receptacle, an annular gap is formed between the side wall of the docking station and the receptacle, and a housing wall of the charging unit can engage in this annular gap. If the charging unit is docked with the docking station, it is placed on top of the docking station. Surrounding side walls of the charging unit can engage in the annular gap, so that from the outside of the charging station is not apparent that the

Loading unit is placed on a docking station. Also, the charging column head on two opposite front surfaces each have a receptacle for each docking station.

The charging unit comprises a power module (HPS module), a communication module (ECU module) and a user interface module (UI module), wherein the

Power module, a first charging control circuit for charging control with a

Electric vehicle has. The requirements for loading units can vary greatly depending on the application. Nevertheless, it is desired to create as much as possible a uniform structure of a charging unit, which can be adapted to demand. In particular, it is first necessary for the charging unit to include basic charging control functions. Therefore, a first charge control circuit is arranged on the power module.

Additional functions, such as extended charging functionalities, billing, communication, user interaction and the like may or may not be required if necessary. For this reason, it is proposed that a communication bus, the communication module and the

User interface module connects to the power module. On the

Communication bus can be coupled as needed, the communication module and / or the user interface module. The function of the power module, in particular of the charging control circuit, is initially independent of this, so that the charging unit is also set up without a communication module connected to the communication bus for providing charging functionalities. If the communication module is coupled, then further functions such as encryption of accounting data, exchange of

Charging parameters, transmission of information and the like, by the

Communication module are provided.

If user interaction is desired, this can be done through the

User interface module will be offered as soon as this is sent to the

Communication bus is connected. The communication bus is used to respective functions on the different modules with each other

coordinate and synchronize, so that if necessary, the power module on the one hand always aware of the presence of a communication module and / or a user interface module and on the other hand also trigger, trigger and / or detect functions thereof. The same naturally also applies to the respective communication module and the user interface module.

According to one embodiment, it is proposed that over the

Communication bus, the communication module and the

User interface module can be optionally connected to the power module. As already mentioned, the functions of the first charge control circuit of the

Power module of this at least partially independent. Is on the

Communication module, for example, a second charging control circuit, it may at least partially override the first charging control circuit, but can also take over and complete functions of the first charging control circuit.

According to one embodiment, it is proposed that the

Communication module and the user interface module in the manner of plug and play over the communication bus to the power module can be connected. In this case, the connected modules can be connected to the bus via the bus

Log on / off the power module. The communication bus is next to the

Communication functionality, for example, a power supply for the communication module and / or the user interface module for

Available. Also, a multi-voltage supply is possible, for example, 3.3 V, 5 V and / or 12 V. The communication and the power supply can run over a single, multi-core cable, such as a flat cable In particular, an RS422 bus is suitable as a communication bus between the respective modules. The power module, the communication module as well

User interface module is each arranged on a separate circuit board. As a result, a mechanical decoupling of the functions of the respective Module reaches, so that they can be arranged as needed in the loading unit.

As already mentioned, the charging unit with the power module is intended to provide basic functions for charging an electric vehicle. Thus, it is proposed that the first charge control circuit be independent of the

Communication module and / or the user interface module for

Charging control is set up with an electric vehicle.

For this purpose, it is proposed that the charge control circuit is set up for charge control by means of pulse width modulation. In particular, the communication with the electric vehicle should be done exclusively via an energy manager. The first

Charge control circuit is set up in particular for charging control according to DIN 61851.

In addition to the charge control circuit on the power module, the

Communication module have a second, independent thereof charge control circuit for charging control with an electric vehicle.

It is proposed that the second charge control circuit has an extended functionality compared to the first charge control circuit. This extended range of functions relates in particular to the possibility of negotiating charging parameters with the electric vehicle. It is proposed that the second charge control circuit for charge control via a pilot conductor with the

Electric vehicle is set up. The second charging control circuit supports in particular a communication protocol according to DIN 15118 or Chademo.

At the power module, a charging outlet is arranged. In addition to the connections for phase and neutral, this charging outlet also has a connection for a ground conductor and a connection for a PP (Plug Present) contact, as well as a CP

(Pilot) contact. In particular, the PP and the CP contact of the charging outlet are on the

Communication bus connected to the second charging control circuit. As a result, the second charging control circuit can record a communication with the electric vehicle, at least via the CP and PP contacts.

Functions may be present in the second charge control circuit which are complementary to functions of the first charge control circuit. In this case, it is proposed that the second charge control circuit at least partially override the charge control of the first charge control circuit.

The power module is used in particular for performance monitoring and the

Power protection. For power protection, in particular, a circuit breaker, a fuse, a leakage circuit breaker, a ground fault (GFCI) sensor, a welding detection sensor and / or a control for an electrical plug unlocking are accommodated on the power module. The

Monitoring can be done in phases or for all phases at the same time, phased monitoring is always preferred.

The communication module may include components for wireless communication in a local area network and / or a wide area network. In particular, radio protocols, such as LTE, UMTS, GSM, 5G, WLAN, for example according to IEEE E802.II, Bluetooth, RFID, NFC or other protocols for wire and / or wireless communication are integrated on the communication module.

The communication module may also include an encryption circuit, which may be formed, for example, as TPM (Trusted Platform Module). This can be used, for example, by means of SML or TLS communication with a smart meter, iMS be included in the docking station and on the other hand, a secure communication with a billing center are performed. With the help of the communication module, the loading unit can optionally be equipped as master or slave. For this purpose, either a master controller or a slave controller can be arranged on the communication module. In the case of equipment as a master, the communication module can, for example, with the extended communication functionality for wireless communication

be equipped. A loading unit with one set up as master

Communication module can control other loading units, the only one

Have communication module with a slave controller. As a result, it is possible, via a local area network, e.g. is controlled by the communication module, a plurality of charging units are equipped with an expanded communication capability, wherein only one of the charging units acts as a master and all other further charging units act as a slave.

Also, a display interface and / or a touch display interface can be arranged on the communication module. Via one of these interfaces, a display or a touch display, which is arranged on the user interface module, can be controlled. About one of these interfaces can also be a display or a touch display, which spatially offset from the

User interface module, e.g. is housed in a separate housing from the charging unit, drive. This makes it possible, the charging unit as

Control center for example to use information and / or advertising displays. The communication and control capability is located on the communication module and the displays themselves no longer require such functionality.

According to one embodiment, it is proposed that a communication module equipped with a master controller can receive measured values via an interface, for example via a LAN interface, from a communication module equipped with a slave controller. These measured values can be recorded by the measuring device on the charging unit, which is equipped with the slave controller, and transmitted to the charging unit with the master controller. The communication module with the master controller can encrypt the receive received measurements for further billing. The encrypted measured values can be transmitted from the encryption circuit to a billing center.

On the user interface module, on at least one side of the

Printed circuit board a variety of sensors are arranged. The sensors are arranged in particular on the side of the printed circuit board which, in the connected state, faces a lid surface. Sensors may be, for example, radar sensors, capacitive or inductive proximity sensors or the like. Also, on the user interface module, a radio antenna, in particular a near field antenna, be arranged to support, for example, RFID functions and / or NFC functions. The antenna may be formed as a PCB antenna.

In addition, a display interface for at least one display and / or a touch display interface for at least one touch display on the

User interface module may be arranged.

Also, a display, a touch display and / or a brightness sensor may be disposed on the user interface module.

The touch display is preferably controlled via a touch display interface on the communication module. A display is preferably controlled via a display interface on the communication module. The user interface module preferably receives only the (touch) display itself and properly aligns it with the lid relative to the lid surface.

According to one embodiment, it is proposed that the power module is arranged in a well assembly and that the communication module and / or the user interface module are arranged in a cover assembly. The article will be explained in more detail with reference to drawings showing an exemplary embodiments. In the drawing shows:

Fig. 1 is a schematic view of a charging station;

Fig. 2 is an exploded view of a charging station with docking station and

Loading unit;

3 is a view of an opened docking station;

4 is a view of a closed docking station;

Fig. 5 is an exploded view of a tub assembly;

Fig. 6 shows a tub assembly in the assembled state;

Fig. 7 shows a tub assembly from below;

Fig. 8a-c mounted tub assemblies without cover;

Fig. 9 is a view of a lid assembly;

Fig. 10 is a bottom view of a lid assembly;

Fig. 11 is a sectional view of a lid assembly.

Fig. 1 shows a charging station with a charging station 2, 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 a manner not described in detail in the receptacle 2a. About the charging station 2, an electrical connection to a power supply network in the Docking Station 4 are introduced. The charging unit 6 can be assembled as an assembly with a tub assembly and a lid assembly, which will be described in more detail below, and placed on the docking station 4 and mechanically fixed to the docking station 4.

Together with the mechanical fixation, the charging unit can be electrically coupled to the docking station 4 via a plug / socket. A

communication technology coupling can be done via at least one patch cable between the docking station 4 and the charging unit 6.

When installed, the docking station 4 is completely received in the receptacle 2a and the loading unit 6 surrounds the outer edge of the docking station 4 substantially completely and is also embedded with its side edges at least in part in the receptacle 2.

However, the docking station 4 can, if necessary, also be mounted directly on a wall without the charging station 2 would be necessary with the recording 2a. Even then, the side walls of the docking station are at least partially surrounded by side panels loading unit 6.

As can be seen from FIG. 1, the base areas of docking station 4 and charging unit 6 are approximately congruent to each other, so that when viewed from the front the charging unit 6 completely covers the docking station 4.

The modular structure of docking station 4 and charging unit 6 is shown in more detail in FIG.

In the figure 2, first the docking station 4 is shown, which has a cable entry 8 in a side wall 10. The docking station 4 is through a

Protective housing cover 12 at least partially facing on the loading unit 6 Side closed. In the lid 12 recesses 14a, 14b are provided, which will be described in more detail below.

The loading unit 6 may be formed from a tub assembly 20 and a lid assembly 26.

Between the cover 12 and the side wall 10 openings 16 may be provided. Webs 18 of the tub assembly 20 may be inserted into the docking station 4 through these openings 16 so that the tub assembly 20 may be fixed to the docking station 4 via the webs 18.

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 additionally has the lid assembly 26. The tub assembly 20 receives a power module 22 and a charging socket 24. The tray assembly 20 is substantially closed on the bottom side with a bottom and is closed on the lid side by the lid assembly 26.

About latching elements 28, the cover assembly 26 can be fixed to locking elements 30 in the side walls of the tub assembly 20. The lid assembly 26 may include a shutter 32 and controls such as a display 34.

In the assembled state, the lid assembly 26 is mechanically joined to the tub assembly 20 and thus seals the tub assembly 20 on one

Top. On the bottom side, the tub assembly 20 is joined to the docking station 4, and a seal is made between the docking station 4 and the tub assembly 20 via the side walls 10.

Between the lid assembly 26 and the tub assembly 20, a seal is made along the outer edge facing the lid assembly 26. The docking station 4 serves as a connection level and can be independent of the Charging unit 6 are connected to a power grid. As long as the charging unit 6 is not coupled to the docking station 4, this is voltage-free. Via a coupling of the charging unit 6 with the docking station 4, the charging unit 6 is connected to the power supply network. The loading unit 6 can as

Supply level, which has charging technology and other "intelligence." This modular design makes it possible to first mount the docking station 4 by a qualified fitter for this purpose, without the need to directly mount a charging unit 6.

The charging unit 6 can be coupled to the docking station 4 in a particularly simple, mechanically tool-free manner at any later time, even by a technical layman, whereby the charging unit 6 is then automatically coupled

is electrified. The loading unit 6 is characterized by their special design

Tub assembly 20 and cover assembly 26 as previously explained, particularly flexible and modular and can be coupled to the particular application.

The docking station 4 is shown in detail in FIG. The docking station 4 has a bottom and side walls 32. On the bottom of the docking station 4, a main board 34 and an interface board 36 is arranged. On the main board 34, a terminal block 38 is provided for connecting a power supply cable.

On the side walls 32 and / or the bottom scale marks 40 may be provided.

In addition to the terminal strip 38, a power connection 42 is also arranged as a socket on the main board 34.

In addition, a receptacle 44 is provided between the side walls 32. The receptacle 44 is closed by a lid. In the receptacle 44, a measuring device, such as a smart meter or an iMS can be anchored latching. Not are shown cable penetrations through the side walls of the receptacle 44 to wire the meter. The receptacle 44 can be sealed via suitable holes, which is not shown in detail.

On the interface board 36 ports 46, 48 are provided for a network cable and for a CAN bus and / or a GPIO bus. In addition, connection sockets can still be provided for connection to the modules within the charging unit.

The external wiring with a local network takes place via a terminal strip, which can then be tapped off via an RJ45 socket. Here are in particular

sufficient contacts are provided to connect at least two independent local area networks. In this case, for example, a first local area network can be formed with a central office and a second local area network between master and slave units, ie 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, this is first fixed mechanically either in the receptacle 2 or screwed, for example, to a wall. Subsequently, a multi-core power cable is inserted into the interior of the docking station 4 through the cable entry 8. This cable has in particular large cable cross-sections and a rigid cable core. Therefore, the cables are difficult to process. Around

To ensure that the cables are always cut to the correct length, the installer can attach the cable to the scale 40 and cut to length immediately. As a result, the fitter can correctly assemble the connection cable so that he can then place it on the connection strip 38 without any problems. Depending on the assembly, a measuring device can be arranged in the receptacle 44. This meter is wired from terminal block 38 via flexible cables. Starting from the meter again cabling via flexible cable with a power connection 42. If no meter is installed, there is a direct wiring via a flexible cable between the terminal block 38 and the power terminal 42. At the power terminal 42 is also a terminal block for receiving the provided respective cable.

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

After the electrical wiring has been made, there is a closing of the housing of the docking station 4, as shown in FIG. 4, by a cover 12th

In FIG. 4 it can be seen that the cover 12 has, in addition to the recess 14a for the power connection 42, at least one further recess 14b for the power supply

Communication ports of the interface board 36, in particular a RJ45 connector and a GPIO connector and a CAN bus connector provided. An RJ45 connector can connect to two separate LAN networks via the RJ45 socket 46.

At the side edges of the protective housing cover 12 openings 16 are provided.

The openings 16 are located between the cover 12 and the side wall 10 of the docking station 4. Through the openings 16, the webs 18 of the

Insert the tub assembly 20 into the docking station 4, so that these webs 18 are completely received by the side wall 10 of the docking station 4. Thus, the loading unit 6 is mechanically anchored by the tub assembly 20 within the docking station 4. After the docking station 4 has been installed in the manner shown, it may, protected by the protective housing cover 12, initially remain unpopulated and at any later time with a tub assembly 20 and

Cover assembly 26 having charging unit 6 are equipped.

A tub assembly 20 is shown in an equipment variant in FIG. The tub assembly 20 includes a housing having side walls 20a and a bottom 20b. In the region of the side walls 20a and the bottom 20b, a power module 50 can be mechanically anchored in the bottom of the tub assembly 20. The power module 50 has a charging port 52 and a

Charge control circuit 54. On the underside of the power module, as also shown in Fig. 5, a plug 56 is arranged, which to the socket of the

Power connection 42 corresponds. Circumferentially around the plug 56 is a collar 58. The collar 58 faces away from the surface of the printed circuit board of the power module 50. In particular, the collar 58 has an extension in this direction, which is greater than the longest extent of each contact of the plug 56th

On the power module 50 further components for power monitoring and / or power control are provided. In addition, a port 60 for a communication bus is disposed on the power module 50.

The port 60 for the communication bus allows the

Communication bus to the power module 50 to connect. Of the

Communication bus can be in the way of plug-and-play both

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 with the aid of

Complementing the communication module and / or the user interface module modular, if necessary, to be able to adapt the loading unit 6 to the respective requirements. The power module 50 is disposed in a first region of the bottom 20b. In a second region of the bottom 20b, a fixing means 62 is provided, which consists of comb-like mutually arranged flanges with each other

Openings is formed. The fixing means 62 is formed of two opposing comb-like structures which define an opening 64 in the bottom 20b.

The fixing means 62 correspond to 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 mounted state. Through the opening 64, it is possible from the

Bottom of the tub assembly 20, through the bottom 20 b a manual

Emergency release on the charging socket 70 make.

For mounting the fastening body 68 on the tub assembly 20, the mounting body 68 with its fixing means 66 to the fixing means 62 so

aligned so that pins 72 can be pushed through the mutually 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 in the bottom side in the

Tub assembly 20 is used, as shown in FIG. 6. Here, the plug 56 is inserted together with the collar 58 through the bottom-side opening 74. The power module 50 is mechanically latched to the housing of the tub assembly 20 and may be floatingly mounted therein. Alternatively or commutatively, it is possible that the main board 34 is floatingly mounted in the housing of the docking station 4. The floating storage has the advantage that during assembly of the

Tub assembly 20 on the docking station 4 of the connector 56 can independently align to the socket of the power terminal 42. This increases operability, in particular facilitates installation by a layman.

The underside of the tub assembly 20 is shown in FIG. It can be seen that the webs 18 leading from the bottom 20b from the tub assembly 20th protrude. Furthermore, the collar 58 can be seen with the plug 56 as it projects through the opening 74.

The collar 58 is in the assembled state in engagement with the opening 14 a. In the opening 14a, as can be seen in Fig. 4, an annular gap 74 which between the socket of the power terminal 42 and a projecting into the interior of the housing of the docking station 4 collar 78 is formed. By the collar 78 shock protection of the docking station 4 is achieved.

During assembly, the tub assembly 20 is placed on the docking station 4 and as can be seen from the combination of FIGS. 4 and 7, while the collar 58 slides into the annular gap 76. The collar 58 enters the annular gap 76 before a contact of the plug 56 comes into electrical contact with a contact of the socket of the power terminal 42. This prevents it from mounting during assembly

Tub assembly 20 may come to the docking station 4 to an electric shock.

The receiving body 68 is such that it receives a variety of

Charging sockets 70 is set up or in other words, a variety of charging sockets 70 may be equipped with different receiving bodies 68, each fixing means 66 have an equal distance from each other and thus form a single mechanical interface to the fixing means 62. As a result, it is possible for a very wide variety of charging sockets 70 to be installed in one and the same tub assembly 20, as can be seen from FIGS. 8a-c.

There, it can be seen that the fixing means 62, 64 engage in one another and are mechanically locked to one another via the pins 72. FIG. 8 a shows a receiving body 68 with a CCS charging socket 70, FIG. 8 b shows a receiving body 68 with a Chademo charging socket 70 and FIG. 8 c shows a receiving body 68 with a Type 2 charging socket 70. As can be seen in FIGS. 8 a - c, the receiving body 68 makes it possible

accommodate a 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 may serve as a "plug garage." The charging outlet 52 may be electrically connected to a charging cable fixedly attached to the housing of the tub assembly 20. The charging cable may be led out in the region of a recess 80 in the side wall of the tub assembly 20.

If no firmly struck cable is used, the charging socket 70 can be electrically connected to the charging control circuit 54 via the charging connection 52. The charging port 52 has three terminals for one phase on a terminal block, another terminal block with two terminals for the

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

To install the charging socket 70 of the receiving body 68 at the

Tub assembly 20 arranged via pre-assembled cable is the

Charging socket 70 connected to the respective terminals of the charging outlet 52 and then the receiving body 68 via the pins 72 in the

Tub assembly 20 fixed.

The loading unit 6 comprises not only the tub assembly 20 but also the

Lid assembly 26, as shown in Fig. 9. The top of the

Lid assembly 26 may have a variety of controls 82 and / or a shutter 84 on a top. Side of the lid assembly 26, on whose

Side edges can be provided locking elements 86, which can engage with the inner side walls of the tub assembly 20 in engagement. As a result, the cover assembly 26 can be mounted on the tub assembly 20. The latching elements 86 may be designed such that they can latch on the side walls of the tub assembly 20 and, in particular, can be released non-destructively only when detached from the bottom, starting from the bottom 20b of the tub assembly 20. This prevents the lid assembly 26 from being detached from the tub assembly 20 while the tub assembly 20 is still electrically connected to the mains board 34 of the docking station 4.

At the rear of the lid assembly 26, as shown in Fig. 10, the shutter 84 is supported so that it can be moved in a direction of movement 88 to the

Charge socket 70 release. 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 another area of the cover assembly 26 may be a

Communication module 90 and a user interface module 92 may be arranged. The communication module 90 as well as the user interface module 92 can be mechanically fixed to the cover assembly 26 or its housing.

The communication module 90 is connected to the via the communication bus

Power module 50 and the user interface module 92 connected.

The communication module 90 includes a non-illustrated

Charge control circuit having electrical access to the charging port 52. The charge control circuit may override or at least be coupled to the charge control circuit 54 so that the two charge control circuits may coordinate to control a charge.

Fig. 11 shows the arrangement of the communication module 90 as well as the

User interface module 92 in the lid assembly 26. The

User interface module 92 faces the inside of the top wall and mechanically connected to the housing of the cover assembly 26 via click-connections 94. The communication module 90 is in turn also connected via connections, not shown, with the housing of the cover assembly 26. The user interface module 92 is fixed to the inside of the

Cover assembly 26, allowing accurate positioning of sensors and

Signalers on the user interface module 92 to the top of

Cover assembly 26 is ensured. In particular, a display 96 may be arranged as an option in the cover assembly 26 and be controlled via the user interface module 92 and / or the communication module 90.

LIST OF REFERENCE NUMBERS

2 charging station

2a recording

4 docking station

6 charging unit

8 cable entry

10 sidewall

12 lids

14 recess

16 opening

18 footbridge

20 tub assembly

22 power module

24 charging socket

26 Lid assembly

28, 30 locking elements

32 side walls

34 Mains board

36 interface board

38 terminal block

40 scale

42 power connection

44 recording

46 connection socket

48 connections

50 power module

52 charging port

54 charging control circuit

56 plug

58 collar 60 connection

62 fixative

64 opening

66 fixative

68 receiving body

70 charging socket

72 pen

74 opening

76 annular gap

78 collar

80 return

82 control element

84 Schütter

86 locking element

88 direction

90 Communication Module 92 User Interface Module 94 Click Connection

96 display

Claims

Patent claims

1. Charging unit for electric vehicles comprising:

a tub assembly and

a lid assembly, wherein

the tub assembly at least one power module, a first

Charge control circuit and at least one charging outlet and the lid assembly, which for receiving at least one

Communication module and at least one user interface module is set up.

2. Loading unit according to claim 1,

characterized,

the tub assembly has a tub-shaped housing and side walls of the housing enclose the power module circumferentially.

3. Loading unit according to one of the preceding claims,

characterized,

that the tub assembly has a bottom.

4. Loading unit according to one of the preceding claims,

characterized,

that the power module is formed as a printed circuit board, which is mounted floating in a plane substantially parallel to the ground.

5. Loading unit according to one of the preceding claims,

characterized, that the power module has a power connection, wherein the

Power connection is disposed in a recess in the bottom.

6. Loading unit according to one of the preceding claims,

characterized,

the power port is enclosed by a circumferential collar, the power port being encompassed by the collar and the collar extending through the bottom away from the interior of the well assembly.

7. Loading unit according to one of the preceding claims,

characterized,

that the bottom has a recess for receiving a charging socket.

8. Loading unit according to one of the preceding claims,

characterized,

in that the tray assembly has a receptacle for a charging socket, the receptacle having fixing means for releasably fixing the charging socket to the tray assembly, in particular that

the fixing means are arranged for receiving mutually different charging sockets, in particular a Typl, Type 2, Type 3 or CCS charging socket according to IEC 62196 or a Chademo charging socket.

9. Loading unit according to one of the preceding claims,

characterized,

that the fixing means is formed by comb-shaped flanges with mutually aligned openings, so that arranged on the charging socket, comb-shaped flanges can engage in the flanges of the fixing means and are fixed thereto by a guided through the openings pin.

10. Loading unit according to one of the preceding claims, characterized,

in that base-side webs extend away from the interior of the tub assembly, wherein the webs are arranged for engagement in recesses on a docking station, and in particular that the webs can be fixed in a form-fitting manner to the docking station.

11. Loading unit according to one of the preceding claims,

characterized,

the power module has at least one circuit breaker.

12. Loading unit according to one of the preceding claims,

characterized,

the power module has on a circuit board the first charging control circuit, the charging outlet and the circuit breaker.

13. Loading unit according to one of the preceding claims,

characterized,

in that the first charge control circuit on the power module is in communication with an electric vehicle on an energy conductor, in particular by means of

Pulse width modulation is set up, in particular that the first

Charge control circuit supports communication according to DIN61851.

14. Loading unit according to one of the preceding claims,

characterized,

in that the charging outlet is connected to a charging cable arranged on the tub assembly, guided out of the tub assembly, or that the charging outlet is connected to a charging socket.

15. Loading unit according to one of the preceding claims,

characterized, that the cover assembly the communication module and the

User interface module, such that starting from the

Cover surface first the user interface module and then the communication module are arranged.

16. Loading unit according to one of the preceding claims,

characterized,

the communication module and the user interface module are each formed on a separate printed circuit board.

17. Loading unit according to one of the preceding claims,

characterized,

that the cover assembly corresponds to the entire surface of the tub assembly and in particular by means of locking elements, which on the inside of the

Lock side walls of the tub assembly, is connectable to the tub assembly.

18. Loading unit according to one of the preceding claims,

characterized,

in that the communication module and the user interface module are arranged in a first region of the cover surface, and that a shutter is arranged on the cover surface in a second region, corresponding to the charging socket in the tub assembly.

19. Loading unit according to one of the preceding claims,

characterized,

in that the user interface module is attached to the inside of the lid surface, so that signal transmitters and / or signal sensors on the

User interface module are fixed relative to arranged on the outside of the lid surface controls.

20. Loading unit according to one of the preceding claims,

characterized,

the communication module and / or the user interface module are mechanically connected to the power module exclusively indirectly via a connection between the cover assembly and the tub assembly.

21. Loading unit according to one of the preceding claims,

characterized,

in that the communication module and / or the user interface module are electrically connected to the power module via a flexible cable.

22. Loading unit according to one of the preceding claims,

characterized,

in that the communication module has a second charge control circuit for

Communication with an electric vehicle via a pilot conductor at the charging outlet.

23. Loading unit according to one of the preceding claims,

characterized,

the communication module has an encryption circuit, wherein the encryption circuit receives a measured value from a smart meter arranged in a docking station and transmits the measured value in encrypted form to a billing center.