DE102022133909A1 - Contact assembly for an electrical connector - Google Patents

Abstract

A contact assembly for an electrical connector (100), comprising:at least one contact element (3A-3N) with a first end region (31A-31N) which is designed to connect to a corresponding contact element of a corresponding connector, and a second end region (33A-33N) facing away from the first end region (31A-31N), wherein an insertion opening (35A) is formed on the second end region (33A-33N) of the at least one contact element (3A-3N); andat least one coupling element (5A-5N, 5A`-5N`), which is designed to be insertable at least in some areas into the insertion opening (35A), for establishing an electrical connection with the contact element (3A-3N), and wherein the coupling element (5A-5N, 5A`-5N`) has a connection element for electrically contacting the coupling element (5A-5N, 5A`-5N`).The invention further proposes an electrical plug connector, in particular a charging plug connector of a charging device (300) for charging an electric vehicle.

Description

The invention relates to a contact assembly for an electrical connector. The invention also relates to an electrical connector, in particular a charging connector of a charging device for charging an electric vehicle.

Such a contact assembly for an electrical connector usually has at least one contact element with a first end region, which is designed to connect to a corresponding contact element of a corresponding connector and a second end region facing away from the first end region. Such contact assemblies are often used in devices for charging electric vehicles, which can comprise a vehicle charging socket and a charging cable. Known charging connectors of charging devices for charging electric vehicles usually have such contact assemblies as current-carrying components.

Particularly in the field of e-mobility, connectors and associated cable harnesses must meet ever higher requirements in terms of current carrying capacity and the density of the charging device network must also be constantly increased. This is why demands for a modular structure, a reduction in the installation space required for the contact assemblies and simple, fast and safe electrical contacting of the contact assembly with a connecting cable are now coming to the fore. Furthermore, manufacturing costs should also be reduced and assembly simplified.

The known contact assemblies often have crimp or screw connectors on the second end areas of the contact elements to connect the individual connecting conductors of the connecting cable in order to electrically connect the individual connecting conductors to the contact elements. For example, the document EP 3 756 933 A1 a well-known charging connector.

Due to the use of individual crimp or screw connectors on the second end areas of the contact elements known from the prior art, the fitter must connect and install all electrical contacts individually, which increases the installation time and costs. In addition, a modular structure and a reduction in installation space are difficult to achieve with contact assemblies designed in this way.

The object of the present invention is to provide a contact assembly which is modular in design, has compact dimensions, enables easy assembly, has a high degree of variability and is also suitable for automated production.

This object is solved by an article having the features of claim 1.

Accordingly, an insertion opening is formed at the second end region of the at least one contact element and the contact assembly has at least one coupling element which is designed to be insertable into the insertion opening at least in regions for establishing an electrical connection with the contact element, and wherein the coupling element has a connection element for electrically contacting the coupling element.

The at least one contact element can be formed in one or more parts from a conductive material and have a cylindrical cross-section at least in some areas. The first end region can be designed as a contact pin or as a contact socket for connecting to a corresponding contact socket or a corresponding contact pin on a corresponding plug connector. The second end region, which is opposite the first end region, comprises an insertion opening. The insertion opening can be understood as a material recess in the material of the contact element, which extends at least in sections in the direction of the contact element. For example, the insertion opening can be designed as a blind hole or blind bore and have a conical or cylindrical shape. The inner surface of the bore can be smooth or structured. For example, a guide groove can also extend on the inner surface in the direction of the insertion opening.

Furthermore, the contact assembly has at least one coupling element which is designed to be insertable into the insertion opening at least in part, for establishing an electrical connection with the contact element. For this purpose, the coupling element can have a geometry in a first end region which can be designed to be essentially complementary to a geometry of the insertion opening in sections, in order to be able to be introduced into the insertion opening, in particular plugged or pushed in.

In a second end region opposite the first end region, the coupling element has a connection element for electrically contacting the coupling element. Depending on the design, the connection element can be designed as a contact lug, crimp connection, clamp connection, etc. When inserted into the insertion opening, the connection element is electrically connected to the contact element.

In embodiments, a large number of contact elements can be used, for example five contact elements, as in plug types according to EN 62196 Type 2 (also called IEC Type 2), which is the standard in Europe for charging electric vehicles at charging stations. The contact elements can be mechanically connected to a material of a charging socket at least in some areas. For example, the contact elements can be embedded in an insulating plastic material of the charging socket at least in some areas using an injection molding process, with at least the insertion openings of the contact elements protruding from the material in order to enable contact to be made with the respective coupling elements.

By electrically contacting the contact elements via coupling elements, which can be introduced at least partially into the material of the contact elements, a modular contact assembly with low installation dimensions, in particular a low installation depth, can be realized, which at the same time offers simple assembly, high variability, and the possibility of automated production.

In one embodiment, the coupling element is designed to be pin-like at least in some areas. For example, the coupling element can be designed as a pin contact and can be inserted into the insertion opening of the contact element with the pin-like first end region.

In one embodiment, the coupling element has at least one spring element which is adapted to press against at least one region of an inner wall of the insertion opening when inserted in the insertion opening; in particular, the coupling element has four spring elements.

The spring elements can be deflected inwards when inserted into the plug-in opening or socket. The spring force ensures radial contact between the coupling element and the contact element.

In one embodiment, the insertion opening is cylindrical, in particular as a blind bore.

In one embodiment, the contact assembly comprises a circuit board having at least one contact region that is electrically connectable or connected to the connection element of the coupling element.

The circuit board can be made of an electrically insulating material, for example fiber-reinforced plastic, and have electrically conductive surfaces on one or both sides, such as the at least one contact area. The electrically conductive surfaces can be arranged as a thin layer of an electrically conductive material, for example as a copper layer, on the circuit board. Furthermore, the circuit board can also be made of multiple layers and, in addition to or as an alternative to the conductive surfaces on the outside, have conductive surfaces inside the circuit board.

In one embodiment, the connection element of the coupling element has at least one contact tongue, in particular a soldering lug, for electrically contacting the contact area of the circuit board.

For example, the contact tongue can be designed as a wire connection for through-hole mounting or for surface mounting.

For example, the contact area can have at least one through-opening for inserting the contact tongue. The electrically conductive surfaces can be arranged on the side of the circuit board on which the contact tongue, in the mounted position, emerges from the through-opening. By inserting the contact tongue through the through-opening, a reliable mechanical connection of the coupling element to the circuit board can be achieved.

Furthermore, such a design also allows the respective contact areas of several contact elements to be introduced into respective through openings at the same time and to be electrically contacted.

For example, the contact tongue is electrically connected to the contact area by means of a soldering and/or clamping connection in order to electrically contact the contact area of the circuit board. A soldering connection can be used to create a permanent electrical and mechanical connection between the connection element of the coupling element and the contact area of the circuit board, which can also withstand external influences such as vibrations.

In one embodiment, the contact assembly has an interface, in particular a circuit board terminal, which is arranged on the circuit board and is designed to be electrically connectable to at least one connecting conductor of a connecting line and is adapted to provide an electrical connection between at least one connecting conductor and the contact area.

The interface can be designed as a circuit board terminal, in particular as a multi-pole circuit board terminal, and can be electrically connected to the at least one contact area.

The circuit board terminal can be designed as a screw or spring-loaded terminal and mounted on the circuit board using different techniques. For example, the circuit board terminal can be mounted using wave soldering, whereby at least one contact tongue of the circuit board terminal is soldered to the underside of the circuit board. Alternatively, techniques such as surface mount technology (SMT) soldering can be used, where at least one contact tongue of the circuit board terminal can be designed as a surface contact for corresponding surface mounting.

By using a PCB terminal as an interface, the connecting conductors of a connecting cable can be easily and safely connected to the contact assembly.

Alternatively or in addition to the circuit board terminal, the interface can also have a plug, in particular a multi-pin connector, which is electrically connected to the at least one contact area.

A plug allows the contact assembly to be electrically contacted quickly and reliably during assembly.

In one embodiment, the circuit board has at least one electrical conductor section, in particular a conductor track, which is adapted to electrically connect the at least one contact region to the interface.

The conductor track, in particular conductor tracks, can run on one side of the circuit board, on both sides of the circuit board, or in between at different levels. The circuit board can therefore also be constructed in multiple layers, for example 8 or 12 layers.

In addition to electrically connecting the interface's connection contacts to the respective contact areas, the conductor tracks also serve to dissipate heat, since the high charging currents also generate high temperatures that must be controlled to ensure reliable functioning of the contact assembly.

In one embodiment, the contact assembly has a further contact element and a further coupling element, in particular a plurality of further contact elements and further coupling elements, wherein the coupling elements arranged on the circuit board form a mating face.

For example, the contact assembly can be seven-pole and have three contact elements for the three phases (L1, L2, L3) and one contact element each for the neutral conductor (N) and the protective conductor (PE). Two contact elements can be designed as signal contacts. If the contact assembly is used for a type 2 connector, as described above, the contact for the protective conductor is in the middle of the connector face and the other contacts are grouped around it. The three phases are arranged next to each other and the neutral conductor closes the circle around the protective conductor in the middle.

All coupling elements arranged on the circuit board can be inserted simultaneously into the respective insertion openings of the associated contact elements. This makes it possible to provide a contact assembly with a very low installation depth. In addition, the insertion depth of the coupling elements in the insertion openings is flexible and can vary in the axial direction.

In one embodiment, the contact assembly has a charging control module, wherein the charging control module can be arranged or is arranged on the circuit board.

In order to avoid the use of separately arranged modules in the connector, additional elements such as the charging control module can be arranged on the circuit board, for example in a modular manner, for a compact design. This means that all the required modules/components for a stand-alone charging control can be arranged on the circuit board. Alternatively or additionally, modules for lighting or temperature monitoring can be arranged on the circuit board in other designs.

In one embodiment, the contact assembly has a contact carrier which has at least one opening for inserting the at least one coupling element through the at least one opening and for holding the at least one coupling element.

As an alternative to the previously described variant of the contact assembly with a printed circuit board, the coupling element, in particular the coupling elements, can also be held by a contact carrier and thereby simultaneously inserted into the Insertion openings of the respective contact elements are introduced. The contact carrier can be designed as a plate-shaped element made of an electrically insulating material with at least one opening, in particular a plurality of openings. The opening/openings can be designed as through-opening/through-openings.

In one embodiment, the connection element is designed as a crimp connection.

The crimp connection is used for the direct mechanical and electrical connection of a connecting conductor to the coupling element.

In one embodiment, the contact assembly has a further contact element and a further coupling element, in particular a plurality of contact elements and coupling elements, and the contact carrier has a further opening, in particular a plurality of openings, for inserting the further coupling element through the further opening, in particular the plurality of coupling elements through a respective opening from the plurality of further openings.

Using a contact carrier, all coupling elements can be inserted or plugged into the respective insertion openings of the corresponding contact elements simultaneously in one process step.

Furthermore, the invention relates to an electrical connector, in particular to a charging connector of a charging device for charging an electric vehicle, comprising at least one contact assembly, as described herein.

The electrical connector can, as previously described, be a Type 2 charging connector on a charging device, which is also often referred to as a charging column, charging station, or wall box.

In one embodiment, the electrical connector has a charging socket, wherein at least one contact element of the contact assembly is mechanically connected to a material of the charging socket, in particular a plurality of contact elements of the contact assembly are mechanically connected to a material of the charging socket.

The term "charging socket" can also refer to a charging socket housing, which can be designed as a plastic injection-molded part and has at least one plastic dome, in particular a plurality of plastic domes, which electrically insulate the contact element(s) in the direction of travel. The contact element(s) can be easily inserted into the respective plastic dome, in particular plugged in. The contact element(s) can be attached, for example glued, to the respective plastic domes. Alternatively, the contact element(s) can be connected to the material of the charging socket during the manufacture of the charging socket, for example by being overmolded at least in some areas.

• 1 eine schematische Ansicht einer Kontaktbaugruppe gemäß einer ersten Ausführungsform mit einer Ladedose;
• 2A und 2B schematische Ansichten der Kontaktbaugruppe gemäß der ersten Ausführungsform;
• 3A - 3D schematische Schnittansichten durch die Ladedose und durch die Kontaktbaugruppe gemäß der ersten Ausführungsform;
• 4A und 4B schematische Ansichten einer Kontaktbaugruppe gemäß der ersten Ausführungsform, die in die Ladedose eingebracht ist;
• 5A - 5D schematische Ansichten einer Kontaktbaugruppe gemäß einer zweiten Ausführungsform;
• 6A - 6C schematische Ansichten eines elektrischen Steckverbinders gemäß; und
• 7 eine schematische Ansicht einer Ladeeinrichtung.

The idea underlying the invention will be explained in more detail below using the embodiments shown in the figures. They show:

• 1 a schematic view of a contact assembly according to a first embodiment with a charging socket;
• 2A and 2 B schematic views of the contact assembly according to the first embodiment;
• 3A - 3D schematic sectional views through the charging socket and through the contact assembly according to the first embodiment;
• 4A and 4B schematic views of a contact assembly according to the first embodiment, which is introduced into the charging socket;
• 5A - 5D schematic views of a contact assembly according to a second embodiment;
• 6A - 6C schematic views of an electrical connector according to; and
• 7 a schematic view of a charging device.

The 1 shows an isometric view of a contact assembly 1, according to an embodiment, with a charging socket 100.

The charging socket 100 is designed as a plastic injection-molded part and has plastic domes 101A-101N, which surround or enclose the contact elements 3A-3N at least in some areas. The contact elements 3A-3N are, as shown in the 3A-3D shown, each equipped with an insertion opening on the back, which is adapted to accommodate the coupling elements 5A-5N shown.

When the contact assembly 1 is transferred to the assembled position, the coupling elements 5A-5N, which are arranged on the circuit board 7, are inserted into the respective insertion openings on the contact elements 3A-3N.

The respective coupling elements 5A-5N can be electrically contacted separately via the interface 9. In the assembled position, the contact elements 3A-3N are electrically contacted via the coupling elements 5A-5N inserted in the insertion openings.

The 2A and 2 B show schematic views of the contact assembly 1 according to the first embodiment. In 2A An exploded view is shown and in 2 B the assembled state is shown.

In the embodiment shown, the contact assembly 1 has five similarly designed coupling elements 5A-5N, which are designed to be inserted at least in certain areas into the insertion openings of a corresponding contact element (not shown). The first end areas 51A-51N are each designed like a pin, for insertion into the insertion openings. As shown, the individual coupling elements 5A-5N have, at least in certain areas, longitudinally extending slots along their direction, which in the embodiment shown form four spring elements 55AA-55NN for each coupling element 5A-5N, which ensure radially circumferential contact between the pin and the socket in the respective insertion opening (not shown) by means of spring force.

In the embodiment shown, two contact tongues 57AA-57NB, shown as soldering lugs, are arranged on the second end regions 53A-53N of the coupling elements 5A-5N for electrically contacting the contact regions 71A-71N of the circuit board 7.

The contact tongues 57AA-57NB shown are designed for through-hole mounting.

In the embodiment shown, the circuit board 7 is rectangular and provided on one side with electrically conductive surfaces which are arranged as thin layers of an electrically conductive material (shown with a border) on the underside of the circuit board 7, i.e. the side of the circuit board 7 which is opposite the side with the components arranged thereon. The electrically conductive surfaces are formed from the contact areas 71A-71N shown and the conductor tracks 73A-73N connected to the contact areas 71A-71N. As in the 1A As shown, the contact areas 71A-71N have through-openings for inserting the contact tongues 57AA-57NB of the coupling elements 5A-5N.

The interface 9 is shown in the illustration as a multi-pole circuit board terminal and each contact of the circuit board terminal shown can be electrically connected to a conductor track 73A-73N.

Also, as in the 2A and 2 B As shown, two further coupling elements for transmitting control signals are arranged above the previously described coupling elements 3A-3N.

The 3A-3D show schematic sectional views through the charging socket 100 and through the contact assembly 1, according to the first embodiment shown above.

The sectional views in the 3A-3D show a section through the charging socket 100 and through the contact assembly 1 along a plastic dome 101A and the associated contact element 3A.

In the 3A a section through the charging socket 100 is shown. In the embodiment shown, the contact element 3A is encased in the material of the charging socket 100 and extends through the plastic dome 101A of the charging socket 100.

In the embodiment shown, the first end region 31A of the contact element 3A is designed as a socket contact for connection to a corresponding pin contact of a corresponding connector (not shown). The corresponding connector has a geometry corresponding to the charging socket shown and is plugged into the charging socket in the plugging direction S.

The second end region 33A of the contact element 3A, which is opposite the first end region 31A, comprises an insertion opening 35A, which is introduced as a material recess in the material of the contact element 3A. In the embodiment shown, the insertion opening 35A is cylindrically designed as a blind hole/bore. The contact element 3A in the embodiment shown is made of an electrically conductive material and the first end region 31A designed as a socket contact is electrically connected to the second end region 33A, so that the socket contact can be electrically contacted via the insertion opening 35A.

In the 3B is already in 3A shown section through the charging socket 100 together with a section through a corresponding coupling element 5A arranged on the circuit board 7. In 3B a state is shown in which the coupling element 5A is partially inserted into the insertion opening 35A to establish an electrical connection with the contact element 3A. The spring elements 55AA-55AD ensure in the insertion opening 35A by means of Spring force creates radial contact between coupling element 5A and insertion opening 35A.

As already mentioned in the 1 , 2A and 2 B As shown, two contact tongues 57AA-57AB designed as solder lugs are arranged on the coupling element 5A for electrically contacting the contact areas of the circuit board 7. As shown in the 3B As shown, the contact tongues 57AA-57AB extend through the circuit board 7.

In 3C the coupling element 5A is shown in the inserted or plugged-in position. The first end region 31A of the contact element 3A, which is designed as a socket contact, can now be electrically contacted via the interface (not shown) on the circuit board 7.

In the 3D a detailed view of the contact element 3A and of the coupling element 5A inserted or plugged into the contact element 3A is shown.

In the embodiment shown, the first end region 31A of the contact element 3A is designed as a socket contact and the second end region 33A comprises the insertion opening 35A designed as a blind hole/bore. In the embodiment shown, the contact element 3A is constructed in several parts, with the individual components of the contact element 3A being at least electrically connected to one another. In further embodiments, the contact element 3A can be formed in one piece from an electrically conductive material.

Furthermore, in the 3D shown that the spring elements 55AA-55AD of the coupling element 5A, in the inserted position, enable a radially circumferential contact between the coupling element 5A and the insertion opening 35A.

The 4A and 4B show schematic views of a contact assembly 1 according to the first embodiment, which is incorporated in the charging socket 100.

In the 4A shown front view are, as previously in 3D shown, the coupling elements 5A-5N are inserted into the insertion openings of the contact elements 3A-3N and form an electrical connection. The circuit board terminal 9 is designed as a screw terminal and the individual connecting conductors can, as in 6B shown, to the screw terminal for electrical contacting of the respective contact elements 3A-3N in the contact assembly 1. Furthermore, in the 4A and 4B shown arrangement, a locking actuator 11 is arranged on the charging socket 100.

The arrangement shown is seven-pole and has three contact elements for the three phases (L1, L2, L3) and one contact element each for the neutral conductor (N) and the protective conductor (PE). Two contact elements are designed as signal contacts and can be connected to an evaluation electronics (not shown). Contact assembly 1 is used for a type 2 connector. Therefore, the contact for the protective conductor is in the middle of the connector face and the other contacts are grouped around it. The three phases are arranged next to each other and the neutral conductor closes the circle around the protective conductor in the middle.

The 5A - 5D show schematic views of a contact assembly 1' according to a second embodiment.

In 5A An exploded view of the contact assembly 1' is shown and in 5B a representation of the contact assembly 1' in the assembled position is shown.

The contact assembly 1' according to the second embodiment has, similarly to the embodiment already shown above, five coupling elements 5A`-5N`, each with a first end region 51A'-51N', which is designed to be inserted into a corresponding insertion opening of a contact element, as shown in the 5D is shown. The contact assembly 1' according to the second embodiment further comprises a contact carrier 4' which has openings 42A'-42N' for inserting the coupling elements 5A'-5N' through the openings 42A'-42N'. The coupling elements 5A'-5N' are held in the openings 42A'-42N' between their first end region 51A'-51N' and their second end region 53A`-53N`. The openings 42A'-42N' have a cross-shaped contour for this purpose, as shown, in order to hold the coupling elements 5A'-5N' securely.

The second end regions 53A`-53N` each have a connection element which is adapted for connection to a respective connection conductor 201A-201N of a connection line 200. In the embodiment shown, the connection elements are designed as crimp connections.

The 5C shows a schematic view of the contact assembly 1' according to the second embodiment, which is connected to a charging socket 100. The charging socket 100 is the one already described in the 1 , 3 and 4 Instead of mounting on a circuit board, as shown in the first embodiment, the Coupling elements 5A'-5N' are held by the contact carrier 4' and simultaneously inserted into the insertion openings of the contact elements in the charging socket 100. A sectional view of the 5C shown structure, for example along a contact element 3A, is shown in the 5D shown.

The 6A-6C show schematic views of the charging socket 100 and the contact assembly 1 installed in a housing 110. In the 6A 1 is a rear view of the housing 110. As shown, the connection cable 200 extends through the housing rear wall to 7 shown charging station 300. The 6B shows a view of the housing 110 without the housing rear and side walls on the already in 4B shown contact assembly 1 together with the charging socket 100. The charging socket 100 is, as shown, arranged on a housing front wall of the housing 110. The respective connection conductors 201A-201N are also connected to the interface. The 6C shows a front view of the housing 110 and the charging socket 100.

The 7 shows a schematic view of a charging device 300 with the charging socket 100.

List of reference symbols

1, 1'

Contact assembly

3A-3N

Contact element

31A-31N

First end area

33A-33N

Second end area

35A

Insertion opening

4'

Contact carrier

42A'-42N'

opening

5A-5N, 5A'-5N'

Coupling element

51A-51N, 51A'-51N'

First end area

53A-53N, 53A`-53N`

Second end area

55AA-55NN

Spring element

57AA-57NN

Contact tongue

7

Circuit board

71A-71N

Contact area

73A-71N

Ladder section

9

Interface

100

Charging socket

101A-101N

Cathedral

110

Housing

200

Connection cable

201A-201N

Connecting conductor

300

Charging device

S

Plug direction

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• EP 3756933 A1 [0004]

Claims (15)

Contact assembly (1, 1') for an electrical connector, comprising: at least one contact element (3A-3N) with a first end region (31A-31N) which is designed to connect to a corresponding contact element of a corresponding connector, and a second end region (33A-33N) facing away from the first end region (31A-31N), characterized in that an insertion opening (35A) is formed on the second end region (33A-33N) of the at least one contact element (3A-3N); and at least one coupling element (5A-5N, 5A`-5N`), which is designed to be insertable at least partially into the insertion opening (35A), for establishing an electrical connection with the contact element (3A-3N), and wherein the coupling element (5A-5N, 5A`-5N`) has a connection element for electrically contacting the coupling element (5A-5N, 5A'-5N'). Contact assembly (1) according to Claim 1 , characterized in that the coupling element (5A-5N, 5A'-5N') is at least partially pin-shaped. Contact assembly (1) according to Claim 2 , characterized in that the coupling element (5A-5N, 5A'-5N') has at least one spring element (55AA-55NN) which is adapted to press against at least a region of an inner wall of the insertion opening (35A) in the inserted position in the insertion opening (35A), in particular the coupling element (5A-5N, 5A`-5N`) has four spring elements (55AA-55NN). Contact assembly (1) according to one of the preceding claims, characterized in that the insertion opening (35A) is cylindrical, in particular is designed as a blind bore. Contact assembly (1) according to one of the preceding claims, characterized by a circuit board (7) having at least one contact area (71A-71N) which is electrically connectable or connected to the connection element of the coupling element (5A-5N). Contact assembly (1) according to Claim 5 , characterized in that the connection element of the coupling element (5A-5N) has at least one contact tongue (57AA-57NN), in particular a soldering lug, for electrically contacting the contact area (71A-71N) of the circuit board (7). Contact assembly (1) according to one of the Claims 5 or6, characterized by an interface (9), in particular a circuit board terminal, which is arranged on the circuit board (7) and is designed to be electrically connectable to at least one connecting conductor (201A-201N) of a connecting line (200) and is adapted to establish an electrical connection between the at least one connecting conductor (201A-201N) and the contact region (71A-71N). Contact assembly (1) according to one of the Claims 5 until 7 , characterized in that the printed circuit board (7) has at least one electrical conductor section (73A-73N), in particular a conductor track, which is adapted for electrically connecting the at least one contact region (71A-71N) to the interface (9). Contact assembly (1) according to one of the Claims 5 until 8th , characterized by a further contact element (3A-3N) and a further coupling element (5A-5N), in particular a plurality of further contact elements (3A-3N) and further coupling elements (5A-5N), wherein the coupling elements (5A-5N) arranged on the circuit board (7) form a plug-in face. Contact assembly (1) according to one of the preceding claims, characterized by a charging control module, wherein the charging control module can be arranged or is arranged on the circuit board (7). Contact assembly (1') according to one of the Claims 1 until 4 , characterized by at least one contact carrier (4`) which has at least one opening (42A'-42N') for inserting the at least one coupling element (5A'-5N') through the at least one opening (42A'-42N') and for holding the at least one coupling element (5A'-5N'). Contact assembly (1') according to Claim 11 , characterized in that the connection element is designed as a crimp connection. Contact assembly (1') according to Claim 11 or 12 , characterized by a further contact element (3A-3N) and a further coupling element (5A`-5N`), in particular a plurality of further contact elements (3A-3N) and coupling elements (5A`-5N`), and wherein the contact carrier (4`) has a further opening (42A'-42N'), in particular a plurality of openings (42A'-42N`), for inserting the further coupling element (5A'-5N') through the further opening (42A'-42N') and for holding the further coupling element (5A`-5N`), in particular for inserting the plurality of further coupling elements (5A`-5N`) through a respective opening (42A'-42N') from the plurality of further openings (42A'-42N'). Electrical connector, in particular a charging connector of a charging device (300) for charging an electric vehicle, comprising at least one contact assembly (1, 1') according to one of the preceding claims. Electrical connector according to Claim 14 , characterized by a charging socket (100), wherein at least one contact element (3A-3N) of the contact assembly (1, 1') is mechanically connected to a material of the charging socket (100), in particular a plurality of contact elements (3A-3N) of the contact assembly (1, 1') are mechanically connected to a material of the charging socket (100).

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