EP3847726A1

EP3847726A1 - Electrical plug connector, high-voltage wiring harness, high-voltage system and method for attaching an electrical plug connector

Info

Publication number: EP3847726A1
Application number: EP19761859.8A
Authority: EP
Inventors: Willem Blakborn; Thomas Garten
Original assignee: Rosenberger Hochfrequenztechnik GmbH and Co KG
Current assignee: Rosenberger Hochfrequenztechnik GmbH and Co KG
Priority date: 2018-09-03
Filing date: 2019-08-29
Publication date: 2021-07-14
Also published as: CN112771733A; CN112771733B; DE102018121400A1; US11588282B2; US20210226390A1; WO2020048871A1

Abstract

The invention relates to an electrical plug connector (1), in particular an electrical pin connector socket for the power electronics in the automotive sector, comprising a plug connector body for receiving a contact device (4) and comprising a shield (10). The plug connector body is designed for introducing into an opening (13) of a housing part (14) of a housing (15) of an electronics unit (16). According to the invention, the plug connector body is designed in multiple parts and has at least one inner plug connector body (2) and an outer plug connector body (3), which are positioned on opposite sides of the housing part (14). The inner plug connector part (2) can be fixed in the housing (15) of the electronics unit (16) independently of the housing part (14). Securing means (18) are provided for connecting the plug connector bodies (2, 3) to one another in such a way that the housing part (14) is fixed between the plug connector bodies (2, 3).

Description

Electrical connector. High-voltage cable assembly, high-voltage system and method for attaching an electrical connector

The invention relates to an electrical connector, in particular an electrical pin trough for power electronics in the automotive field, according to the preamble of claim 1.

The invention also relates to a high-voltage line set, comprising an electrical connector.

The invention also relates to a high-voltage system, in particular for a motor vehicle, having egg NEN electrical connector.

The invention further relates to a method for attaching an electrical connector to a housing part of a housing of an electronic unit, in particular a high-voltage battery.

A large number of electrical connectors, in particular also electrical pin sockets, are known from electrical engineering. As is known, the electrical connectors are used to transmit electrical energy and / or signals with the widest possible bandwidth, in particular to transmit them to corresponding mating connectors.

Electrical connectors have contact devices in numerous embodiments. Pink contacts and / or pin contacts are particularly common. Regardless of the specific design, the various connectors are referred to below as electrical connectors.

An electrical connector or an electrical mating connector can be a plug, a built-in connector, a socket, a coupling or an adapter. The term "connector" or "mating connector" used in the context of the invention represents all variants.

Connectors for the motor vehicle industry in particular are subject to high demands with regard to their robustness and the safety of the plug connections. For example, a connector with high loads, such as mechanical loads, must withstand and remain closed in a defined manner. It must be ensured that the electrical connection is not inadvertently disconnected, for example during the operation of a vehicle. Furthermore, the plug connector must also ensure a perfect transmission of electrical power, signals and / or data even in contaminated, moist and / or chemically aggressive environments.

In the autonomous operation of vehicles and for assistance systems in particular, ensuring safety is a priority. Electrical connectors or their connector body can on an electrical line, egg nem harness, a cable or an electrical device such. B. a housing or an electronic or electrical device.

Special requirements are placed on electrical connectors, particularly in the high-voltage range. High-voltage connectors are used in the vehicle sector, especially in electric and / or hybrid vehicles, to supply a high-voltage battery with charging current or to extract the stored energy from the battery. For example, suitable connectors for supply units, such as for high-voltage connections. B. a charging box in a garage or a carport or even at charging stations, used to supply a high-voltage battery of a vehicle with charging current. The electrical connector must permanently and safely prevent the ingress of moisture and contaminants and ensure a flawless transmission of the electrical charge current and possibly other electrical or electronic signals for controlling the charging process of the high-voltage battery.

The use of electrical connectors to transmit a comparatively large electrical drive energy (or braking energy) in electric and / or hybrid vehicles requires specifically designed high-voltage electrical connectors. It should also be taken into account that alternating currents and / or switching edges with high DC voltages generate electromagnetic interference signals which can disrupt the electronics in an electronic control system, for example within a motor vehicle. Efficient electromagnetic shielding, in particular the electrical connector used in the high-voltage range in motor vehicles, is therefore advantageous in order to avoid impairment of control units within the vehicle. Accordingly, high demands are placed on the shielding of the electrical connectors.

The electrical connectors known from the prior art generally have an electromagnetic shield that can be electrically contacted by a mating connector.

From the prior art it is known a connector body of an electrical connector which a contact device, for. B. with pin and / or pin contacts, to a housing seteil a housing of an electronic unit, for example a housing of a high-voltage battery, to screw. The housing is usually made of sheet metal or a cast part. The connector body is then screwed directly to the sheet metal in such a way that a front end of the connector body protrudes outwards through an opening in the housing part, so that an electrical mating connector can be placed on the front end of the connector body. It is important to ensure that the assembly of the connector body of the connector on the housing part is carried out correctly, so that in particular the electrical mating connector can also be connected correctly to the electrical connector. The correct assembly of the connector body has proven to be complex in practice.

The present invention has for its object to improve the known from the prior art electrical connector, in particular to simplify their assembly on a housing part of a housing of an electronics unit and largely to avoid incorrect assembly.

This object is solved by the features of claim 1.

Another object of the present invention is to provide an advantageous high-voltage line set.

This object is solved by claim 13.

Another object of the present invention is to provide a high-voltage system, in particular for a motor vehicle, which enables simple and reliable installation.

This object is solved by the features of claim 14.

The present invention also has for its object to provide an advantageous method for attaching an electrical connector to a housing part of a housing of an electronics unit, in particular a high-voltage battery, which is simple and reliable.

This object is solved by the features of claim 15.

The electrical connector according to the invention has a connector body for receiving a contact device. Shielding is also provided, in particular in order to shield electromagnetic interference signals. The connector body is designed for insertion into an opening of a housing part of a housing of an electronics unit.

The electrical connector is preferably an electrical pin trough. Electric pen trays are u. a. known in the automotive field.

The electrical connector is seen in particular for power electronics in the motor vehicle sector. However, the invention is not limited to this. In principle, the electrical connector according to the invention can advantageously be used within the entire electrical engineering or in the entire electronics area. The electronics unit is preferably a high-voltage electronics unit, in particular a high-voltage battery.

According to the invention it is provided that the connector body is formed in several parts and at least has an inner connector body and an outer connector body, which are positioned on opposite sides of the housing part GE. The inner connector body can be fixed in the housing of the electronics unit independently of the housing part. Fastening means are also provided in order to connect the connector bodies to one another in such a way that the housing part is fixed between the connector bodies.

Basically, it is provided that the inner connector body is fixed to at least one further section of the housing in addition to being fastened to the housing part.

With the solution according to the invention, the connector body can be easily and reliably connected to the housing part of the housing of the electronics unit. A defined positioning of the electrical connector body is thus achieved in a simple manner, such that an electrical mating connector can be reliably and securely connected to the electrical connector.

The inner connector body can be fastened in the housing in any manner, preferably by means of a screw connection or corresponding screwing points.

It is advantageous if the inner connector body is first fixed in the housing of the electronics unit and then the housing part, which is preferably designed as a cover, is put on.

The inner connector body and the housing part provided with the opening are positioned in relation to one another in such a way that the housing part, in particular in a version as a cover, can be placed on the housing in a suitable manner, so that the inner connector body can be moved from an interior of the housing through the The opening of the housing part protrudes outwards. Then the outer connector body is placed on the outside of the housing part in such a way that the inner connector body can be connected to the outer connector body with the aid of the fastening means, whereby the housing part, which is located between the two connector bodies, is also fixed.

The fastening means are preferably designed to be detachable.

The fastening means are preferably formed separately from the outer connector body. The outer connector itself is therefore not a fastening means within the scope of the invention, in particular not a union nut. In a particularly advantageous embodiment it is provided that the fastening means are designed as screw connections.

According to the invention it can be provided that one of the connector bodies has at least two, preferably four, sockets arranged symmetrically about a central axis of the connector, preferably threaded sockets, and the corresponding connector body has two, preferably four through bores arranged symmetrically about the central axis of the connector, where the Fasteners are designed as connecting elements, preferably as threaded screws, in order to connect the connector bodies to one another.

In this embodiment, it is preferably also provided that the housing part has corresponding bores that are aligned with the sockets or the through bores, through which the connecting elements can be plugged in order to connect the connector bodies to one another, preferably to screw them together.

This configuration makes it possible to reliably connect the connector bodies to one another, in particular to screw them together and to fix them on the housing part.

In a particularly advantageous manner, this configuration not only fixes the electrical connector in a particularly reliable manner, but can also be detached again if required.

The inner connector body preferably has the sockets, in particular threaded sockets, and the outer connector has the through bores for the fastening means.

According to the invention, it can further be provided that the shield has a cylindrical section and a plurality of shielding tabs adjoining the cylindrical section. From the shield can be arranged and designed such that it surrounds the contact device before coaxially.

The shield is preferably arranged symmetrically and concentrically around the central axis of the connector.

More preferably, the shield is connected to the inner connector body or represents a component of the inner connector body.

The shield can also be designed such that the shielding tabs adjoining the cylindrical section of the shield for connection to an electrical counterpart. Connectors are suitable so that when the electrical connector is plugged together with the mating connector, a continuous shield is formed.

Preferably 4 to 24, more preferably 6 to 18 and particularly preferably 9 to 15, in particular 12 shielding tabs are provided which are distributed uniformly around the central axis of the plug connector. It can be provided that the shielding tabs are designed to be resilient, in particular in the radial direction, in order to establish a reliable connection with the shielding of the electrical mating connector.

It can be advantageous if the shielding tabs have radially projecting contact points that are positioned such that the contact points contact the housing part in the region of the opening.

Preferably, the contact points contact the housing within the opening or on an inner wall of the opening.

The contact points improve the electrical connection between the shield and the housing part and thus also between the shield and the entire housing of the electronics unit.

The housing part and / or the housing of the electronics unit can preferably be made of metal, in particular of sheet metal. However, the housing part and / or the housing can also be designed, for example, as a cast part or cast housing.

In principle, the outer connector body can also have a shield.

The shielding can in particular serve to protect the surroundings of the electrical connector from the electromagnetic fields emanating from the electrical connector. The shielding can serve to improve the electromagnetic compatibility and, moreover, to ensure the interference-free signal transmission and processing of further electronic components, in particular also of the control units, which are installed in a motor vehicle. In particular, when the connector according to the invention is used for the transmission of high-frequency signals, the shielding can also help to shield the signal transmission through the connector from external interference sources in order to improve the transmission.

According to the invention it can be provided that the contact device is accommodated in the inner connector body, preferably connected to the inner connector body in a form-fitting manner, in particular is clipped in particular. In principle, the connection of the contact device to the inner connector body can, however, take place in any manner, for example also in a force-fitting and / or integral manner. A positive connection has proven particularly useful, particularly in the automotive field.

A positive connection of the contact device with the inner connector body can preferably be done in that the inner connector body has latching hooks which snap onto suitable counter elements of the contact device such that the contact device inserted into the inner connector body can no longer be pulled out in the opposite direction of insertion. For this purpose, the contact device can have corresponding shoulders, steps or projections corresponding to the latching hooks. It can be particularly advantageous if the shoulders, steps or the projections with which the locking hooks correspond are formed on the power connections of the connector body because they have a correspondingly high stability.

Of course, other configurations are also possible here, in particular it can also be provided that the contact device has latching hooks and the inner connector body has corresponding counter elements.

According to the invention, it can be provided that the contact device has at least one, preferably two or four or more inner conductor parts, which are preferably formed as pin contacts and / or pin contacts. In principle, however, the contact device can have any structure in order to transmit electrical energy or signals of any frequencies and with any data rates, preferably with the largest possible bandwidth.

The solution according to the invention is particularly suitable for the transmission of electrical current, for. B. for charging a battery. For this purpose, it is provided that the inner conductor parts serve for power supply. It can be provided that in an embodiment with two inner conductor parts, an inner conductor part is connected to the electrical negative pole or the ground and the other inner conductor part is connected to an electrical positive pole of the supply voltage. In an embodiment with four inner conductor parts, it can preferably be provided that the inner conductor parts are each positioned in pairs in such a way that a pair of inner conductor parts are connected to the negative electrical pole and a pair of inner conductor parts are connected to the positive electrical pole of the supply voltage such that an inner conductor part of a corresponding one Mating connector can be inserted between a pair of inner conductor parts of the electrical connector's. This results in a particularly reliable transmission of the currents.

In principle, it can also be provided that the contact device is bipolar or multi-pole or that the contact device is divided into a plurality of partial contact devices. The inner conductor parts of the contact device can preferably be designed to transmit a high-voltage voltage and thus be designed as high-voltage inner conductor parts. The voltage provided for transmission can be, for example, 220 volts, preferably 400 volts, but also more, for example also 110 to 1000 volts, preferably 400 to 1000 volts.

The contact device is preferably provided as a contact device for transmitting currents in electric and / or hybrid vehicles, in particular for providing the drive power and / or for charging the battery, in particular a high-voltage battery by using the braking energy (recuperation) or by external current sources.

It can be advantageous if the contact device is designed as a high-voltage contact device and the inner conductor parts are designed as a high-voltage inner conductor.

It can also be advantageous if the contact device has an HV interlock for monitoring the correct connection of the connector with an electrical mating connector.

The HV lnterlock is preferably designed to monitor the correct connection of the electrical connector with the mating connector in the high-voltage circuit, with the aim of preventing an electrical hazard from unintentional, improper or otherwise caused disconnection of the power electronics circuit, in particular a high-voltage system in the motor vehicle sector to prevent. In order to achieve this, the power electronics can preferably have a safety circuit. This can be a circuit which is supplied with a 12-volt on-board voltage, for example, and which runs from the electrical connector to the electrical mating connector. If the circuit of the safety circuit is interrupted by removing one of the plug connections, this is recognized by a control unit. The control unit can then open a high-voltage main relay or the like and switch off the power electronics, in particular the high-voltage system. The basic structure of an HV interlock for monitoring the correct plug connection is known.

According to the invention, it can further be provided that the connector body of the electrical connector has a positioning device such that the connector body (i.e. the inner connector body and the outer connector body) can only be connected to one another in a defined orientation.

The positioning device is preferably designed such that the connector bodies can only be connected to one another in exactly one specific orientation. In principle, however, it is conceivable to design the positioning device such that the connector bodies can be connected to one another in two or more defined orientations. It is in particular for realizing an electrical plug connection for power electronics in the motor vehicle or electronics sector However, it is advantageous to design the positioning device in such a way that the two connector bodies can only be connected to one another in exactly one specific orientation by means of the connector.

The positioning device can be designed such that one of the connector bodies has one or more positioning lugs or corresponding projections and the other connector body has correspondingly arranged positioning grooves, springs or recesses. The connector body can preferably be designed such that they can only be connected to one another if the positioning device is aligned accordingly, in particular such that the positioning lugs of the one connector body are aligned with the positioning grooves of the other connector body. The connector bodies are preferably connected to one another by a movement which runs parallel to the central axis of the electrical connector. The connector bodies are preferably plugged onto one another.

It has turned out to be particularly suitable if the connector bodies have one, two, three, four or even more pairs of positioning lugs / positioning grooves which are arranged in such a way that the connector bodies can preferably be connected to one another only in exactly one orientation. It is thereby achieved that the connector bodies can only be connected to one another in the intended orientation and the connection is made reliably and appropriately guided by the positioning device.

The positioning grooves or the positioning lugs can each be formed on one of the connector bodies. The other connector body is then designed accordingly. However, mixtures are also possible, i. H. that both connector bodies have positioning grooves as well as positioning lugs.

In a development of the invention, it has been shown that it can be advantageous if the inner connector body has one or more positioning grooves and the outer connector body has corresponding positioning lugs. The positioning grooves in the inner connector body preferably extend in the axial direction and preferably such that they extend between two shielding tabs. Preferably, one, two, three, four or more positioning grooves are provided, each of which runs between two shielding tabs.

It can be advantageous if the connector with an electrical mating connector forms a coding device such that the connector and the mating connector can only be connected to one another in a defined orientation.

The coding device is preferably designed as a mechanical coding device. In principle, however, a magnetic coding device or a mixture thereof is also possible, for example. Mechanical rough guidance and magnetic fine guidance can also be provided to make the connection of the electrical connector with the electrical mating connector particularly convenient and safe.

The part of the coding device which is assigned to the electrical connector is preferably formed at a suitable location on the outer connector body, preferably at an axial end of the outer connector body which faces away from the inner connector body. The electrical mating connector is preferably designed accordingly. The Codiereinrich device can have one, two, three or more pairs of coding elements / coding counter-elements, which must be correspondingly aligned so that the electrical mating connector can be connected to the electrical connector.

The coding device is preferably designed such that the electrical connector and the electrical mating connector can only be connected to one another in exactly one orientation. In principle, however, it is also possible that the coding device enables a connection in two, three, four or more defined orientations.

When using the electrical connector and the electrical mating connector for power electronics in the motor vehicle and / or electronics sector, however, it is particularly suitable if the electrical connector can be connected to one another in exactly one orientation or in at most two orientations with the electrical mating connector.

According to the invention, it can be provided that the plug connector has a partially ring-shaped guide, which is designed to provide a particularly robust connection of the plug connector with a mating connector which has a 45 ° outlet to 135 ° outlet, preferably a 90 ° outlet, to enable.

In particular in the case of plug connections which are used in power electronics in the motor vehicle sector, reliable and robust contacting of the electrical plug connector with the Ge plug connector is particularly important. The formation of a guide, in particular a guide ring on the electrical connector has been found to be particularly suitable for reliably connecting the electrical mating connector.

The guide can preferably be formed on the outer connector body. Insofar as the Ge plug connector has an outlet that runs parallel to the longitudinal axis of the electrical connector or that extends in the plugging direction, the electrical connector can also have a closed, ring-shaped guide.

In an advantageous further development of the invention it can be provided that the electrical plug-in connection has a toothing, which for connection to a corresponding toothing of the Mating connector is provided. The toothing can be designed as a toothing ring, a partial ring or by a plurality of ring segments. In a design of the toothing as a ring segment, a plurality of ring segments can be provided which interact with corresponding corresponding ring segments of the electrical mating connector in order to realize a preferably positive toothing such that rotation of the electrical mating connector on the electrical connector is prevented by the toothing.

The contact device preferably has two power connections, which accordingly supply the inner conductor parts with current (e.g. connections plus / minus or phase / neutral conductor). It can preferably be provided that each of the two power connections is connected to an inner conductor part or to a pair of inner conductor parts, between which a corresponding inner conductor part of an electrical mating connector can then be inserted.

It can be provided that the power connections have a different length, i. H. are spaced at different distances from the inner connector body in the axial direction, so that corresponding power cables can be connected in a simple manner. The power connections can preferably each have a hole for connecting a power cable, the power cable preferably leading to a battery, in particular a high-voltage battery, in particular a motor vehicle.

It can be advantageous if the sockets, preferably the threaded sockets of one of the connector bodies and / or the through holes of the other connector body are provided with a seal, preferably an O-ring, which is adjacent to the hole in the housing part. This achieves a seal, which is particularly important for the motor vehicle sector and ensures use in a moist, dirty and / or possibly chemically aggressive environment.

Seals, in particular O-rings, are preferably provided only on the bushings, in particular the threaded bushings, which are preferably realized on the inner connector body.

It can also be advantageous if a seal, in particular a sealing ring, is provided on the inside and / or the outside of the housing part, which seals the opening in the housing part with respect to the adjacent connector body. The adjacent connector body and / or the housing part can optionally have a recess for this purpose, into which the seal, in particular the sealing ring in particular, is at least partially inserted. The seal, in particular the sealing ring, is preferably provided between the housing part and the outer connector body. This results in a reliable sealing of the opening in the housing from a possibly dirty, damp or chemically aggressive environment. The electrical connector according to the invention is designed in particular as a two-part pin trough for attachment to a housing, in particular a sheet metal housing.

The connector, in particular the contact device, preferably has an essentially round cross section. The cross section of the electrical connector is preferably largely or essentially symmetrical, insofar as the functions allow this. However, different cross sections are also possible, in particular square cross sections or rectangular cross sections.

The invention also relates to a high-voltage line set, comprising an electrical connector according to the above statements and a prefabricated cable with a corresponding electrical mating connector.

The invention further relates to a high-voltage system, in particular for a motor vehicle, comprising an electrical connector according to the above statements, a housing of a high-voltage electronics unit, in particular a high-voltage battery, with a housing part to which the electrical connector is fixed and with an electrical mating connector for connection to the electrical connector.

The invention further relates to a method for attaching an electrical connector to a housing part of a housing of an electronic unit, in particular a high-voltage battery, wherein a shielded contact device is inserted into an inner connector body of the connector, after which the inner connector body is positioned in the housing and it is determined that a housing part of the housing provided with an opening can be placed on the inner connector body in such a way that a front part of the inner plug connector derkörpers penetrates the opening in the housing part from an interior of the housing to the outside, the housing part as the cover of the housing is formed, and after that on an outer side of the housing part, a body corresponding to the inner connector body corresponding outer connector is attached and screwed to the inner connector body art that the Ge housing part is fixed between the two connector bodies.

The inventive method allows the electrical connector to be installed particularly easily and results in a robust and reliable connection to a housing part of a housing of an electronic unit.

The inventors have recognized that it is advantageous if an inner connector body provided with the contact device is first fixed in the housing and then the housing part, which is preferably the cover of the housing, is placed on. The cover of the housing is placed in such a way that an opening provided in the cover is placed on the inner connector body. This is preferably done in such a way that a shield the connector body creates an electrical connection with the lid. The shielding can preferably be designed, as has already been described above or will be described below, in particular contact points can be provided.

The outer connector body can then be placed on the outside of the cover and fixed to the inner connector body using fasteners. This also fixes the cover that is located between the inner connector body and the outer connector body. The method according to the invention enables simple, reliable and robust assembly of the connector body. Such a method is particularly suitable for electrical connectors for power electronics in the motor vehicle sector, in particular for a high-voltage line set and very particularly preferably for a high-voltage system of a motor vehicle.

Features that have already been described in connection with the electrical connector according to the invention can of course also be advantageously implemented for the high-voltage line set, the high-voltage system and the method according to the invention - and vice versa. Furthermore, advantages that have already been mentioned in connection with the electrical connector according to the invention can also be understood to relate to the high-voltage line set, the high-voltage system and the method according to the invention - and vice versa.

In addition, it should be pointed out that terms such as "comprehensive", "exhibiting" or "with" do not exclude other features or steps. Furthermore, terms "a" or "that" that indicate a number of steps or features do not exclude a plurality of features or steps - and vice versa.

An exemplary embodiment of the invention is described in more detail below with reference to the drawing.

The figures show a preferred exemplary embodiment in which individual features of the present invention are shown in combination with one another. However, the features of the exemplary embodiment can also be implemented separately from the other features of the exemplary embodiment and can accordingly be easily combined by a person skilled in the art into further meaningful combinations and sub-combinations.

In the figures, functionally identical elements are provided with the same reference symbols.

They show schematically:

Fig. 1 shows the electrical connector in an exploded view, with an inner

Connector body, a housing part and an outer connector body; Figure 2 is a side perspective view of the inner connector body inserted into an opening of the housing part.

Fig. 3 is a side view showing the housing part on which the electrical

Connector is set;

Fig. 4 is a perspective view from above of the connected to the housing part

electrical connector according to arrow direction IV in Figure 3;

5 shows a perspective view from below of the electrical connector connected to the housing part in the direction of arrow V in FIG. 3; and

Fig. 6 is a schematic representation of a high-voltage system with a housing of a high-voltage electronics unit, in particular a high-voltage battery, and a high-voltage line set, comprising an electrical connector and a prefabricated cable with a corresponding electrical mating connector.

Figure 1 shows an electrical connector 1 in a preferred embodiment as a pin trough.

The electrical connector 1 is particularly suitable for use in power electronics in the motor vehicle or electronics sector. In the exemplary embodiment, the electrical plug connector is designed as a plug connector for the high-voltage range, preferably as part of a high-voltage line set, and this in turn is preferably formed as part of a high-voltage system.

However, the exemplary embodiment is not to be understood as being limited to this.

The electrical connector 1 has a multi-part connector body, which is composed in the exemplary embodiment of an inner connector body 2 and an outer connector body 3.

As can be seen from the figures, the inner connector body 2 receives a contact device 4. The contact device 4 can be connected in any way to the inner connector body. In the exemplary embodiment, it is provided that the contact device 4 is inserted into the inner connector body 2 and is there preferably positively, in particular hooked or clipped.

For this purpose, it is provided in the exemplary embodiment that the inner connector body 2 has latching hooks 5 which hook or latch in a suitable manner with the contact device 4 (cf. FIG. 5).

In the exemplary embodiment it is provided that power connections 6 of the contact device 4 have a suitable design such that - when the contact device 4 is inserted into the inner connector body 2 - the latching hook 5 with a corresponding design of the power connections 6, for example a return or catch or lock a paragraph to prevent an to intentionally unplug or remove the contact device 4 from the inner connector body 2.

The latching hooks 5 are shown in principle in FIG. 5 and hook there with the power connections 6.

In the exemplary embodiment, four latching hooks 5 are provided, two latching hooks each engaging at opposite positions on a respective power connection.

The contact device 4 can be designed to transmit electrical currents and / or data at any frequencies and / or data rates. In the exemplary embodiment it is provided that the contact device for the high voltage range can be used for use with high voltages, in particular 220 volts and greater, preferably 400 to 1000 volts.

For this purpose, the contact device 4, as shown in the figures, has two power connections 6.

In the exemplary embodiment, the power connections 6 are each connected to two inner conductor parts 7, which are designed to transmit electrical current to correspondingly designed inner conductor parts of an electrical mating connector 8 shown in principle in FIG.

Instead of two inner conductor parts 7 per power connection 6, only one inner conductor part 7 can also be hen.

In the exemplary embodiment, as can be seen particularly well from FIGS. 2 and 4, two inner conductor parts 7 are arranged in pairs such that an inner conductor part (not shown) of the mating connector 8 can be pushed between an inner conductor pair of the connector 1 . Alternatively, the inner conductor part of the mating connector 8 can also be configured to include the two inner conductor parts 7 of a pair. Furthermore, the mating connector of FIG. 8 can also have inner conductor parts which are formed in several parts per power connection.

In an embodiment that is not shown, it can also be provided that the electrical plug connector of FIG.

In the exemplary embodiment, the contact device 4 has a circular outer circumference. The shape of the contact device 4 can, however, be chosen as desired, for example also square or rectangular. A circular outer circumference, in particular also a concentric or symmetrical construction of the contact device 4 has been found to be suitable. The inner conductor parts 7 of the contact device 4 can preferably be formed as pin and / or pin contacts. Such an embodiment has proven to be particularly suitable.

As can be seen in particular from FIG. 4, the contact device 4 can have a so-called HV interlock 9 for monitoring the correct connection of the electrical connector 1 with an electrical mating connector 8. FIGS. 1 to 3 and 5 also show two lines 9a which lead to the HV interlock 9.

The inner connector body 2 has an electromagnetic shield 10. In particular by alternating currents and / or switching processes of a direct voltage, electromagnetic interference signals can be generated, which the electronics, for. B. in a motor vehicle, especially the local electronic controls such. B. an engine control, can interfere. The embodiment shows a particularly suitable embodiment of the shield 10. The shield 10 has a cylindrical portion 11 and several adjoining the cylindrical portion 1 1 shielding tabs 12. The mating connector 8 is preferably designed such that it also has a shield (not shown), which at least partially radially contacts the shielding tabs 12. The shielding tabs 12 are preferably resilient in order to establish a good connection with the shielding of the mating connector 8.

In the exemplary embodiment, the shield 10 is connected to the inner connector body 2. The inner connector body 2 and the shield 10 are jointly inserted into an opening 13 of a housing part 14 of a housing 15 of an electronics unit 16.

The housing 15 can be a component of the electronics unit 16 or can be designed independently thereof and can accommodate the electronics unit 16. In the exemplary embodiment, the electronics unit 16 is designed as a high-voltage electronics unit, in particular as a high-voltage battery 16.

A particularly advantageous connection of the inner connector body 2 with the housing 15 or the housing part 14 results from the fact that the inner connector body 2 is first fixed in the housing 15 Ge. The determination can be made in any way. In the exemplary embodiment, it is shown in principle in FIG. 6 that the inner connector body 2 is fixed at screwing points 17. For this purpose, the inner connector body 2 can be designed accordingly (not shown in detail). It is advantageous if the inner connector body 2 is first fixed in the housing 15 and then the housing part 14 provided with the opening 13 is set up or the inner connector body 2 is inserted into the opening 13. The inner plug connector derkörper 2 is set at a correspondingly suitable position in the housing 15, so that the opening 13 and the inserted into the inner connector body 2 contact device 4 are concentrically aligned with one another, so that the contact device 4, the opening 13 from an interior of the Housing 15 can penetrate to the outside. In the exemplary embodiment, it is optionally provided that the housing part 14 is designed as a cover of the housing 15.

When the inner connector body 2 is pushed through the opening 13, the outer connector body 3 is then attached to an outside of the housing part 14. This is shown in the figures, in particular also in the exploded view in FIG. 1. The setting of the outer connector body 3 and the inner connector body 2 is carried out with the aid of fastening means 18 such that the housing part 14 between the connector bodies 2, 3 is festge sets. In the exemplary embodiment, the fastening means are designed as screw connections, in particular as threaded screws 18.

In the exemplary embodiment it is further provided that the inner connector body 3 has at least two, in the exemplary embodiment four, sockets 19 arranged symmetrically about a central axis A of the connector 1. In the exemplary embodiment, the bushes are designed as threaded bushes 19.

The outer connector body 3 correspondingly has at least two through bores 20 arranged symmetrically about the central axis A of the connector 1 in the exemplary embodiment.

In the exemplary embodiment, it is provided that the housing part 14 has bores 21 which are aligned with the threaded bushings 19 or the through bores 20.

In the exemplary embodiment, seals which are designed as O-rings 22 are also provided in order to seal the bores 21 in the housing part 14. In the exemplary embodiment it is provided that the O-rings 22 are inserted into the threaded bushings 19. The threaded bushings 19 preferably have corresponding depressions for this purpose.

A seal 23 is also provided analogously for sealing the opening 13. In the game Ausführungsbei serves a sealing ring 23 which is positioned between the outside of the housing part 14 and the outer connector body 3 and rotates around the opening 13 (only shown in Figure 1).

As can be seen in particular in FIG. 2, the shielding tabs 12 and / or alternatively (but not shown) the cylindrical section 11 of the shield 10 have contact points 24 which are positioned such that the contact points 24 cover the housing part 14 in the region of the opening 13 contact. For this purpose, the contact points 24 preferably protrude radially beyond the shielding tabs 12. Through the contact points 24, a reliable electrical connection between the shield 10 and the housing part 14, which is preferably electrically conductive, in particular as a sheet metal part or as a cast part, is made. As can be seen in particular from FIG. 1 and FIG. 4, the connector bodies 2,

3 shows a positioning device 25 such that the connector bodies 2, 3 can only be connected to one another in a defined orientation. In the exemplary embodiment it is provided that the positioning device 25 has at least one, in the exemplary embodiment several, preferably three to four, positioning grooves 26 and corresponding positioning lugs 27.

In the exemplary embodiment, the positioning grooves 26 are formed on the inner connector body 2 and extend in the axial direction between two shielding lugs 12. The outer connector body 3 has corresponding positioning lugs 27 which, when the outer connector body is correctly attached to the inner connector body 2 by 3, in the axial direction A extending into the corresponding positioning grooves 26 are inserted. In the exemplary embodiment it is provided that the connector bodies 2, 3 can only be connected to one another in exactly one orientation.

In the exemplary embodiment it is provided that the electrical plug connector 1 with the electrical connector plug 8 forms a coding device 28 such that the connector 1 and the connector plug 8 can only be connected to one another in a defined orientation. In the embodiment example it is provided that the electrical connector 1 and the electrical mating connector 8 can only be connected to one another in exactly one orientation.

In the exemplary embodiment, only the part of the coding device 28 is shown that is assigned to the electrical connector 1, more precisely the outer connector body 3. A coding element 29 of the coding device 28 assigned to the outer connector body 3 is shown in FIG. 1 and FIG. 4 and forms a mechanical coding. Mechanical codes to connect electrical connector 1 and electrical mating connector 8 together are fundamentally known from the prior art. Basically, within the scope of the invention, a plurality of coding elements 29 can also be seen on the plug connector 1 and (not shown) on the mating plug connector 8 in order to design a coding device 28 accordingly. In the exemplary embodiment, two coding elements 29 are formed on the outer connector body 3.

As can be seen from the figures, the electrical connector 1 has a partially ring-shaped guide 30 which is designed to connect the connector 1 to an electrical mating connector 8 which has a 90 ° outlet (as shown in principle in FIG. 6) ) possible.

Other configurations are also possible here, in particular if the mating connector 8 has another outlet, in particular an outlet which runs parallel to the central axis A of the connector 1 or the central axis A of the connector body 2, 3. As can also be seen from the figures, the outer connector body 3 has a toothing 32. In the exemplary embodiment, it is provided (not shown) that the electrical mating connector 8 has a corresponding toothing, as a result of which - after the electrical connector 1 has been connected to the electrical mating connector 8 - a positive connection is created which offers protection against rotation or corresponding Can absorb forces.

Figure 6 shows a basic structure of a high-voltage system with the electrical connector 1 and an electrical mating connector 8. Also shown is the housing 15, which accommodates the electronics unit 16, which is preferably a high-voltage electronics unit, in particular a high-voltage battery 16. The high-voltage battery 16 is connected via lines 33 to the power connections 6 of the electrical connector 1. The housing part 14 is preferably a cover of the housing 15. The electrical mating connector 8 is shown in FIG. 6 as part of a prefabricated cable 31, ie. H. the prefabricated cable 31 has the electrical mating connector 8. Basically, however, the electrical mating connector 8 can also be an electrical mating connector 8, which is designed only as a book, as an adapter or the like, and in particular does not necessarily have to be part of a confectioned cable.

Claims

Patent claims

1. Electrical connector (1), in particular electrical pin tray for the power electronics in

Motor vehicle sector, with a connector body for receiving a contact device (4) and with a shield (10), the connector body being designed for insertion into an opening (13) of a housing part (14) of a housing (15) of an electronics unit (16) that

the connector body is constructed in several parts and has at least one inner connector body (2) and an outer connector body (3) which are positioned on opposite sides of the housing part (14), the inner connector body (2) being independent of the housing part (14) in the housing (15) of the electronics unit (16) can be fixed and wherein fastening means (18) are provided in order to connect the connector bodies (2, 3) to one another in such a way that the housing part (14) is fixed between the connector bodies (2, 3) is.

2. Electrical connector (1) according to claim 1,

d a d u r c h g e k e n n z e i c h n e t that

the fastening means (18) are designed as screw connections.

3. Electrical connector (1) according to claim 1 or 2,

d a d u r c h g e k e n n z e i c h n e t that

one of the connector bodies (2) has at least two, preferably four, sockets (19), preferably threaded sockets, arranged symmetrically about a central axis of the connector (1), and the corresponding connector body (3) has two, preferably four, symmetrical about the central axis (A) of the connector (1) has through holes (20), the fastening means (18) being designed as connecting elements, preferably as screws, to connect the connector body (2, 3) to one another.

4. Electrical connector (1) according to one of claims 1 to 3,

d a d u r c h g e k e n n z e i c h n e t that

the shield (10) has a cylindrical section (11) and a plurality of shielding tabs (12) adjoining the cylindrical section.

5. Electrical connector (1) according to claim 4,

d a d u r c h g e k e n n z e i c h n e t that

the shielding tabs (12) have radially projecting contact points (24) which are positioned such that the contact points (24) contact the housing part (14) in the region of the opening (13).

6. Electrical connector (1) according to one of claims 1 to 5, characterized in that

the shield (10) is connected to the inner connector body (2).

7. Electrical connector (1) according to one of claims 1 to 6,

d a d u r c h g e k e n n z e i c h n e t that

the contact device (4) is received in the inner connector body (2), preferably connected to the inner connector body (2) in a form-fitting manner, in particular is clipped.

8. Electrical connector (1) according to one of claims 1 to 7,

d a d u r c h g e k e n n z e i c h n e t that

the contact device (4) has at least one, preferably two, four or more inner conductor parts (7), which are preferably designed as pin contacts and / or pin contacts.

9. Electrical connector (1) according to one of claims 1 to 8,

d a d u r c h g e k e n n z e i c h n e t that

the contact device (4) has an HV interlock (9) for monitoring the correct connection of the connector (1) with an electrical mating connector (8).

10. Electrical connector (1) according to one of claims 1 to 9,

d a d u r c h g e k e n n z e i c h n e t that

the connector bodies (2, 3) have a positioning device (25) such that the connector bodies (2, 3) can only be connected to one another in a defined orientation.

11. Electrical connector (1) according to one of claims 1 to 10,

d a d u r c h g e k e n n z e i c h n e t that

the connector (1) with an electrical mating connector (8) forms a coding device (28) such that the connector (1) and the mating connector (8) can only be connected to one another in a defined orientation.

12. Electrical connector (1) according to claim 11,

d a d u r c h g e k e n n z e i c h n e t that

the connector (1) has a partially annular guide (30) which is designed to connect the connector (1) to a mating connector (8), which has a 45 ° outlet to 135 ° outlet, preferably a 90 ° outlet. Leaving has to allow.

13. High-voltage line set, comprising an electrical connector (1) according to one of claims 1 to 12 and a prefabricated cable (31) with a corresponding electrical Ge connector (8).

14. High-voltage system, in particular for a motor vehicle, comprising an electrical connector (1) according to one of claims 1 to 12, a housing (15) of a high-voltage electronics unit (16), in particular a high-voltage battery, with a housing part (14) on which the electrical Connector (1) is fixed and with an electrical mating connector (8) for connection to the electrical connector (1).

15. A method for attaching an electrical connector (1) according to one of claims 1 to 12 to a housing part (14) of a housing (15) of an electronics unit (16), in particular a high-voltage battery,

d a d u r c h g e k e n n z e i c h n e t that

a with a shield (10) provided contact device (4) is inserted into an inner connector body (2) of the electrical connector (1), after which the inner connector body (2) is positioned and fixed in the housing (15) in such a way that a housing part (14) of the housing (15) provided with an opening (13) can be placed on the inner connector body (2) in such a way that a front part of the inner connector body (2) opens the opening (13) in the housing part ( 14) from an interior of the housing (15) to the outside, the housing part (14) being designed as a cover of the housing (15), and then on an outside of the housing part (14) corresponding to the inner connector body (2) Dender outer connector body (3) is attached and screwed to the inner connector body (2) such that the housing part (14) between the two connector bodies

(2, 3) is set.