DE102019104106A1 - Charging station base for electric charging station, electric charging station and system with charging station base and charging station - Google Patents

Abstract

Charging station base for an electrical charging station with a foundation (4) and at least three connection lines (14) of an electrical supply network (38), which lead out of the foundation (4), characterized in that at least one plug connector (18, 34) at the ends of the Connection lines (14) is arranged, the plug connector (18, 34) being formed for connection to a plug connector (28) of a charging station (2).

Description

The subject matter relates to a charging station base for an electric charging station with a foundation.

The spread of electrically powered vehicles will increase rapidly in the near future. With the spread of electric vehicles that are operated with an electric motor, a functioning infrastructure must be made available for charging the electric vehicles. In addition to charging at the house socket, users of electric vehicles must also be given the opportunity to obtain energy in the public sector. With the range of electric vehicles between 50 and a few 100 km available up to now, it is necessary that the vehicles can also be charged outside of the domestic environment. Therefore, charging stations must be made available in public areas in order to guarantee constant availability of energy for electric vehicles through a supply network. This availability is a decisive criterion for the acceptance of electric vehicles.

In the public area, however, the charging stations not only have to provide energy, they also have to be easy to install. In addition, in order to create a good visual impression, the charging stations must be vertical. After all, the charging stations also have to be able to withstand larger transverse forces without changing their position and orientation. Such forces can be caused, for example, by a vehicle approaching. In this case twisting should be prevented. Also, people should not be able to move the charging stations out of their position. After all, a firm stance is also relevant to safety, as power lines with high voltages and currents are carried in the charging station. The electrical connections must be brought safely to the charging station from damage.

For the reasons mentioned above, the object of the object was to provide an easily installable, high stability ensuring charging station base for electrical charging stations, which simplifies an electrical connection.

Up to now, when installing the charging station on the foundation, it was necessary to first thread the connection lines leading out of the foundation into the charging station. Then the connection lines had to be cut to the correct length, stripped and individually placed on a connection strip. This work is time-consuming and error-prone. In addition, it is necessary that two different trades have to be completed when installing the charging station. This is associated with a high organizational effort.

In order to simplify the electrical installation of the charging station to be placed on the foundation, it is proposed that at least one connector be arranged on the ends of the connection lines leading out of the foundation, the at least one connector being formed for connection to a charging station connector of a charging station.

If the foundation is placed on a blinding layer or is poured on a blinding layer, the connection cable is laid with the connection lines in the foundation at the same time. A connection cable can lead one or more connection lines in an insulation. Each connecting line can be formed with one or more strands (wires, core) and an insulation surrounding them. The strands of the connecting cables are isolated from each other by the insulation. When connection lines are mentioned below, either a single connection line or a connection line which is arranged with other connection lines in a common cable can be meant. The connection of the connection lines to the power supply network takes place via one or more earth sockets, which are arranged at the end of the connection lines laid in the ground when the foundation is installed. During this work, a plug connector can also be electrically connected to the ends of the connection lines that are led out of the foundation. The strands of a connection line can be placed together on a contact of the connector. The connector can then be sealed waterproof.

If the foundation is a prefabricated component, this prefabricated component can be created directly in the factory with the connection lines. On the bottom or to the side of the foundation in the area of the floor, the connection lines can be led out of the foundation with a free end. This free end can have a length of several meters, so that it is always ensured that the connection lines arranged on the foundation are long enough to be connected to an energy supply network via an earth socket.

The other free end of the connection lines can be led out on an upper side, preferably in the middle or in the area of the middle of the upper side of the foundation. The length of the connecting lines leading out there can be fixed, in particular this can be according to the required length for connecting the connecting cables to the charging station placed on the foundation. During the manufacture of the foundation, the plug connector can be connected to the connection lines and, if necessary, sealed against water.

When connecting lines are mentioned in this document, they can be formed as individual lines with a core and insulation or they can be routed as cables in a common insulation.

An individual plug connector with a contact can be provided for each connection line, or a plug connector can be provided which has a plurality of contacts and the connection lines, in particular of an individual cable, can be placed therein on contacts insulated from one another.

The prefabricated foundation produced in the factory now has the connection lines with the at least one plug connector. This prefabricated component can be delivered to the construction site and placed directly on the blinding layer. The first free end of the connection lines is then installed on the ground side of the power supply network, in particular via an earth socket. The fitter of the prefabricated foundation does not have to worry that the connection lines protrude with a sufficient length on the top of the foundation, since the length for the charging station to be installed is already prepared.

After the foundation has been installed, the charging station can be set up by an electrically untrained fitter and screwed to the foundation. This fitter can then establish the electrical connection of the charging station to the power supply network by simply plugging the connector into a corresponding charging station connector of the charging station. There is no need for time-consuming cutting to length, stripping and laying on individually, which is only possible by electrically trained fitters.

In order to prevent an electric shock, the connector of the connection cables should be safe to touch. This is particularly the case when it is designed as a socket (female connector). Electrical contact can then be established between the connection lines and the power supply network as soon as the foundation is installed, without the risk of an electric shock. Contact protection is provided even if the connector is freely accessible.

As already explained, the connection lines can be formed as individual lines or as lines of a cable. It is possible that a dedicated connector is provided for each connection line. When it is placed on the connection strip of the charging station, one connector is then connected per connection line. This has the advantage that the connector itself is mechanically simpler to construct. In particular, the plug connectors with the charging station plug connectors of the charging station can be formed in a poka-yoke relationship to one another. This prevents an incorrect assignment when hanging up.

According to one exemplary embodiment, it is proposed that at least two connection lines are routed in a common insulation of a cable and that the plug connector has a number of contacts for a number of connection lines of the cable. A contact within the connector can be provided for each connection line.

According to one embodiment, it is proposed that the connecting lines are cut to length in such a way that the plug connector can be connected to a charging station plug connector of a charging station placed on the charging station base. In particular, the length of the connection line including the connector corresponds to the distance between the connection strip (with the corresponding charging station plug connectors) of a charging station and the upper edge of the foundation or the lower edge of the floor of the charging station. Thus, when the bottom of the charging station is placed on the foundation, the plug connectors of the connecting lines can be simply plugged into the charging station plug connectors of the terminal strip of the charging station.

A connection is particularly simple if the connector is designed as an angled connector. The connection lines usually protrude from the foundation perpendicular to the surface normal to the upper side of the foundation and run from there to the connection strip. A housing cover can be provided on a side wall of the charging station. A fitter can reach into the charging station from the side via the housing cover. If the charging station plug connector of the connection strip point in the direction of the housing cover, the angle plug can be plugged directly onto the charging station plug connector of the connection strip. In particular, the angle connector is a 90 ° connector.

According to one exemplary embodiment, it is proposed that the foundation has a stump and a foot, the connection lines being led out of the stump.

If the foundation is formed with a foot and a stump, the charging station base has a secure footing. The foot, as well as a large part of the stump, can be permanently installed below the upper edge of the ground.

A particularly firm stand and a particularly high absorption of shear forces are possible if the foot has a larger edge length than the stump. In this case, the foot extends within the soil over a larger area than the stump. Torques that occur on the surface as a result of loading the charging station can be absorbed by the foot. The weight of the charging station base must not be too great, since otherwise such a base can no longer be installed sensibly or only with great effort. On the other hand, however, the weight must be so great that the charging station base cannot easily be lifted out of the ground. For this reason it has been found that a foot with an edge length of at least 50 cm is a good compromise. Here, the foot can be square, for example. With such a foot, on the one hand, good stability can be achieved and, on the other hand, the weight of the charging station base can be kept sufficiently low.

In order to prevent the charging station base from being pulled out of the ground, it is proposed that the stump enlarge in the direction of the foot. The frustum is preferably frustoconical or pyramidal. The shape of the stump, which tapers towards the top, is also used to fasten the charging station base as vertically as possible in the ground.

As already explained above, on the one hand the weight is an important criterion for a charging station base. On the other hand, however, stability is also an important criterion. A stump with an edge length between 20 and 40 cm offers a good compromise between weight and stability. The stump is preferably rectangular here.

In addition, the charging station must have a sufficient depth in the ground so that it is not pulled out of the ground. It has been shown that a height of the charging station base of at least 40 cm is advantageous. In this case, the charging station base can be installed, for example, in such a way that its upper edge is 2 cm above the upper edge of the terrain. In this case, the blinding layer must be placed 38 cm below the top of the ground.

According to an advantageous embodiment it is proposed that the foot and the stump are in one piece. This avoids seams between the foot and the stump. It is also easier to manufacture. The base of the charging station must be able to withstand all weather conditions and be able to absorb large forces. For this reason, it is proposed that the charging station base be made of concrete, in particular with a quality class C35 / 45.

Another aspect is a charging station with a housing, a housing cover, a connection strip arranged in the housing in the region of the housing cover for an electrical connection of the charging station to an electrical supply network. To connect the charging station to the supply network, the connection strip is equipped with at least one charging station connector. In particular, a separate charging station plug connector is provided for each connection line, or a charging station plug connector is provided which is provided with a number of contacts, in particular corresponding to the number of connection lines.

A charging station is usually connected to the electrical supply network in three phases. In such a case, the terminal strip has at least five connections, namely phases L1, L2, L3 as well as PE and N. A corresponding number of connection lines is led out of the foundation and connected to a corresponding number of charging station connectors or contacts of an individual charging station connector. In the case of a DC charging station, a connection can also be made with only three contacts, namely plus and minus potential and earth conductor. The number of connection lines and charging station connectors can be adapted accordingly.

According to one exemplary embodiment, it is proposed that a charging station connector be arranged for each connection of the connection strip. It is also possible that the charging station connector is formed for several connections of the connection strip.

In particular, the charging station connector of the connection strip is formed as a plug (male connector).

Another aspect is a system with a previously described charging station base and a previously described charging station, in which the connector of the charging station base is non-positively coupled to the charging station connector of the charging station and an electrical connection between the connection lines and at least two connections of the charging station via the connector and the charging station connector is formed ..

• 1 eine Seitenansicht eines Ladestationssockels;
• 2 eine Ansicht eines Anschlusskabels mit Anschlussleitungen;
• 3a, b Steckverbinder und Ladestationssteckverbinder gemäß einem Ausführungsbeispiel;
• 4 ein Steckverbinder gemäß einem Ausführungsbeispiel;
• 5a ein System mit einer Ladestation und einem Ladestationssockel im nichtverbundenen Zustand;
• 5b das System gemäß 5a im verbundenen Zustand.

The subject matter is explained in greater detail below with the aid of a drawing showing exemplary embodiments. In the drawing show:

• 1 a side view of a charging station base;
• 2 a view of a connection cable with connection lines;
• 3a, b Connector and charging station connector according to an embodiment;
• 4th a connector according to an embodiment;
• 5a a system having a charging station and a charging station pedestal in the disconnected state;
• 5b the system according to 5a in the connected state.

1 shows a charging station pedestal 2 with a foundation 2 including a foot 4th and a stump 6th . It can be seen that the foot 4th in the lower part of the foundation 2 is arranged. Towards the stump 6th the foot tapers 4th in a transition area 8th . Then at the transition area 8th extends the stump 6th up. The foot 4th has a larger edge length than the stump 6th .

The stump 6th extends from the transition area 8th towards its top edge 10 . The stump tapers here 6th towards the top edge 10 . The top edge 10 is preferably chamfered.

By means of the charging station base in question, it is possible to carry out an installation in a particularly simple manner, the charging station base ensuring a high level of security with a high level of stability and ease of installation.

This is done in the foundation 2 at its bottom 2a a connection cable 12 is introduced. The connection cable 12 is through the foundation 2 guided. On the top 2 B of the foundation is the connection cable 12 with the connecting cables 14th led out.

It is possible that the connection cable 12 while the foundation 2 is made, is arranged in the mold. That means that the connection cable 12 all around in direct contact with the finished foundation 2 is. It is also possible that after the foundation has been made 2 an opening in the foundation 2 is provided or that during the laying of the foundation 2 an opening is left out. The connection cable 12 can be passed through this opening.

The length 16 the connecting cables 14th that come from the foundation 2 sticking out at the top is like in that 2 shown, given. In particular, the connecting cables 14th cut to length so that the length 16 such is that from the top 2 B of the foundation 2 to the end of the connecting cable 14th a predetermined distance is reached. This distance is determined by a distance between a terminal strip of a charging station and the floor of the charging station.

This makes it possible for yourself to have one in the foundation 2 fixed cable can be placed particularly easily on the connection strip of the charging station. The connecting cables 14th or the connection cable 12 can firmly in the foundation 2 be anchored, in particular by a form fit, which results from the fact that the material of the foundation 2 , especially concrete, directly on the insulation sheath of the connection cable 12 and / or the connection line 14th lays. Then the connecting cables 14th no longer from the foundation 2 be pulled out and the length 16 is firmly defined. This fixed length 16 is in particular such that it is sufficient, the connection lines 14th with a suitable charging station connector on a connection strip of a charging station.

Suitable connectors and charging station connectors are in the 3a and b shown. 3a shows a connection line 14th with a vein 14a . The connecting cable 14th is inside a connector 18th and there via a terminal strip or some other connection 20th electrically with the connector 18th connected. In the connector 18th is a socket 22nd intended. The socket 22nd is in electrically conductive connection with the wire 14a . The socket 22nd is through a lid 24 protected. Such a connector 18th can be used on all connection lines 14th be provided.

A corresponding connector for this 28 (as a charging station connector) is in the 3b shown. The plug 28 has a connection pin 30th on that to the socket 22nd corresponds. The connection pin 30th is with a contact 32 connected in the charging station. For connecting the connector 18th with the plug 28 becomes the socket 22nd on the connection pin 30th and there will be an electrically conductive connection between the wire 14a and the contact 32 manufactured. In this way, each individual connection line can be 14th to a dedicated contact 32 to the charging station.

4th shows schematically another connector 34 . This connector 34 has a plurality of sockets 22nd each with a connecting cable 14th of a cable 12 are connected. Such a connector too 34 can be connected to a corresponding charging station connector (not shown) in the charging station.

After installing the foundation 2 will, as in the 5a shown, first the connection cable 12 with an earth socket 36 to a supply network 38 connected. The cable 12 can be attached to the foundation with a length of up to several meters 2 be arranged to ensure the connection to the supply network. On the top 2 B of the foundation 2 the connecting cables protrude 14th out and are with a length 16 cut to length and with a connector 18th Mistake.

On a foundation assembled in this way 2 can be a charging station 40 with a terminal strip 42 and other charging technology 44 be put on. At the bottom of the charging station 40 the connecting cables 14th through openings on the bottom into the interior of the housing of the charging station 40 introduced. In the area of the connection strip 42 has the charging station 40 a housing cover 46 .

For mounting the charging station 40 on the foundation 2 is this like in 5b pointed to the foundation 2 put on. The lid 46 is opened and a screw connection of the charging station 40 on the foundation 2 may happen. Then the connecting cables 14th on the terminal strip 42 hung up. It can be seen that the length 16 the cut-to-length connection cables 14th to the distance between the terminal strip 42 from the bottom of the charging station 40 corresponds. Thus the connecting lines are 14th in a correct length 16 cut to length and can with the connectors 18th directly on the connection strip 42 be put on. Cutting to length, stripping and laying the connection cables individually 14th on terminal strips can thus be omitted. This simplifies the assembly of a charging station 40 considerable.

List of reference symbols

2

foundation

2a

ground

2 B

Top

4th

foot

6th

Stump

8th

phase

10

Top edge

12

Connection cable

14th

Connecting cable

16

length

18th

Connectors

20th

Terminal

22nd

Rifle

24

cover

28

Charging station connector

30th

Connection pin

32

Contact

34

Connectors

36

Earth socket

38

Energy supply network

40

Charging station

42

Terminal strip

44

Charging technology

46

Housing cover

Claims (15)

Charging station base for an electrical charging station with - a foundation (2), and - at least three connection lines (14) of an electrical supply network (38) led out of the foundation (2), characterized in - that at least one plug connector (18, 34) is attached the ends of the connection lines (14) leading out of the foundation, the at least one plug connector (18, 34) being formed for connection to a charging station plug connector (28) of a charging station. Charging station socket Claim 1 , characterized in - that the at least one connector (18, 34) is formed as a socket. Charging station socket Claim 1 or 2 , characterized in that a connector (18, 34) is arranged at each end of a respective connection line (14) which is led out of the foundation. Charging station base according to one of the preceding claims, characterized in that at least two connection lines (14) are guided in an insulation of a cable (12) and the at least one plug connector (18, 34) contacts for the connection lines (14) of the cable (12) having. Charging station base according to one of the preceding claims, characterized in that the connecting lines (14) are cut to length such that the at least one connector (18, 34) can be connected to a charging station connector (28) of a charging station (40) placed on the foundation (2) is. Charging station base according to one of the preceding claims, characterized in that the at least one plug connector (18, 34) is an angle plug. Charging station base according to one of the preceding claims, characterized in that the foundation (2) has a stump (6) and a foot (4), the connection lines (14) being led out of the stump (6). Charging station base according to one of the preceding claims, characterized in - that the foot (4) and the stump (6) are in one piece. Charging station base according to one of the preceding claims, characterized in - that the foundation (2) is formed from concrete. Charging station base according to one of the preceding claims, characterized in - that the concrete has a quality class C35 / 45. Charging station with - a housing, - a housing cover (46), - a connection strip (42) arranged in the housing in the region of the housing cover (46) for an electrical connection of the charging station (40) to an electrical supply network (38), characterized in that, - That the connection strip (42) has at least one connection (32) and at least one charging station connector (28). Charging station after Claim 11 , characterized in that a charging station plug connector (28) is arranged for each connection (32) of the connection strip (42). Charging station after Claim 11 , characterized in - that a charging station connector (28) is formed for at least two connections (32) of the connection strip (42). Charging station according to one of the Claims 11 to 13th , characterized in - that the charging station connector (28) is formed as a plug. System with a charging station base according to one of the Claims 1 to 10 and a charging station according to one of the Claims 11 to 14th , in which the connector (18, 34) of the charging station base is non-positively coupled to the charging station connector (28) of the charging station (40) and an electrical connection between the connecting lines (14) via the connector (18, 34) and the charging station connector (28) and at least two connections (32) of the charging station are formed.

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