DE102018221653A1 - Plug contact unit, mating plug contact unit, as well as power electronics device with a plug contact unit and a mating plug contact unit - Google Patents

Abstract

Disclosed is an electrical plug contact unit (SK) for producing a mechanical and electrical connection between an electrical conductor (LT) to a mating plug contact unit (GK), with an electrically conductive plug contact element (KE1, KE2), comprising
a conductor connection section (LV) which is set up to physically and electrically connect the plug-in contact element (KE1, KE2) to the conductor (LT),
a first screw connection part (SV1, SV3) which is set up to physically and electrically connect the plug contact element (KE1, KE2) to the mating plug contact unit (GK) via a screw connection,
a first contact section (KA1) between the conductor connection section (LV) and the first screw connection part (SV1, SV3), which has an outer circumference tapering from the conductor connection section (LV) to the first screw connection part (SV1, SV3) for aligning the mating plug contact unit (GK) ,
Furthermore, a corresponding mating plug contact unit (GK) and a power electronics device (V) with a plug contact unit (SK) and a mating plug contact unit (GK) are provided.

Description

Technical area:

The present invention relates to a plug contact unit and a mating plug contact unit for a power electronics device, and a power electronics device with a plug contact unit and a mating plug contact unit, esp. For use in a motor vehicle, especially in a hybrid electric / electric vehicle.

State of the art and object of the invention:

Power electronics devices for vehicle electrical systems of motor vehicles, in particular hybrid electric / electric vehicles, which are electrically connected to one another via electrical conductors (or electrical cables or busbars), are known. Plug-in contact units or mating plug-in contact units are provided for the power electronic devices, which together form the low-resistance and at the same time manually separable high-current connections of the power electronics devices via the electrical conductors.

In the field of power electronics, the high-current connections present a particular challenge in terms of mechanical stability. Especially in the automotive sector, the high-current connections must be vibration-proof.

Thus, the object of the invention is to provide a possibility with which a high-current connection mentioned above can be made mechanically low-impedance, stable and, in particular, vibration-proof.

Description of the invention:

This object is solved by subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims.

According to a first aspect of the invention, an electrical plug contact unit is provided for producing a mechanical and electrical connection between an electrical conductor (an electrical line, or an electrical cable or a busbar) to a (correspondingly formed) mating plug contact unit.

The plug contact unit has an electrically conductive plug contact element for producing the mechanical and electrical connection between the conductor and the mating plug contact unit.

The plug-in contact element has a (conductor-side) conductor connection section which is set up to physically and electrically connect the plug-in contact element to the conductor.

The plug-in contact element further has a first (opposite contact side) screw connection part which is set up to physically and electrically connect the plug-in contact element with the mating plug-in contact unit via a screw connection.

The plug-in contact element also has a first contact portion which is located between the conductor connection portion and the screw connection part and an outer circumference tapering from the conductor connection portion to the first screw connection portion for aligning the mating plug contact unit (in the manufacture of the plug connection to facilitate insertion of the mating plug contact unit). In this case, the first contact section is in particular designed to produce a positive connection.

The plug-in contact unit has an electrically conductive plug-in contact element, which has two mechanical and electrically conductive connection parts with the conductor-side conductor connection portion and the first gegenkontaktseitigen screw connection, each independently with one of the two connection partners, namely the conductor and the Gegensteckkontakteinheit, a mechanical and at the same time electrically conductive Can build connection.

With the first, against contact-side screw connection part a stable and vibration-proof screw connection from the plug contact unit to a correspondingly formed mating plug contact unit is possible.

The first contact portion between the conductor connecting portion and the first screw connection part facilitates the alignment of the plug-in contact unit to the mating plug contact unit in the production of the connector thanks to the tapered from the conductor connection portion to the first screw connection part.

After the plug-in connection is produced by screwing the first screw connection part into a correspondingly formed mating connection part (or a second screw connection part) of the mating plug-in contact unit, the first contact section, thanks to the outer circumference tapering towards the mating plug contact unit, provides a flat extended contact surface with a correspondingly formed mating contact section a second contact portion) of the mating plug contact unit. These Contact surface has thanks to the flat extent a corresponding frictional resistance, which acts as an anti-rotation device for the screw connection between the screw connection part of the plug contact unit and the corresponding mating connection part (or the second screw connection part) of the mating plug contact unit.

In addition, the areally extended contact area provides a correspondingly extensively extended and thus low-resistance current transfer area between the plug contact unit and the mating plug contact unit.

The screw connection between the screw connection part and the mating connection part, in turn, maintains the mechanically stable, vibration-proof, low-impedance current transmission surface.

The fact that the plug contact element and thus the conductor connection section, the first screw connection part and the first contact section electrically conducts the plug contact unit - provided the first screw connection part is also electrically connected to the conductor - two parallel current transmission paths, namely a first current transmission path via the first screw connection part , and a second power transmission path via the first contact portion and the conductor connection portion. These two parallel current transmission paths ensure a low-impedance current connection between the conductor and the mating plug-in unit.

This provides the possibility with which a high-current connection can be made low-resistance, mechanically stable and vibration-proof.

It is immaterial whether the components of the plug contact unit described above, such as. As the first screw connection part, the conductor connection portion and the contact portion, are physically connected to each other and thus form a physical unit.

It is only essential that these components produce a low-impedance, mechanically stable and vibration-proof high current connection between the plug contact unit and the mating plug contact unit in interaction with one another and with components of the mating plug contact unit.

For example. For example, the first screw connection part can form a separate part, which can also be part of the mating plug-in contact unit.

Thanks to the screw connection of the first threaded connection part, which can be manually disconnected, the high-current connection of the plug-in contact unit with the correspondingly formed mating plug-in contact unit can be separated manually if required.

The high-current connections in the automotive sector can be carried out with the above-described plug contact unit with the correspondingly formed mating plug contact as low-resistance vibration-proof, and thus reliable connections.

The plug contact unit with the correspondingly formed mating plug contact unit can also be used for a low-current connection.

For example. the conductor connection section, the first screw connection part and the first contact section are designed concentrically with each other about a first extension axis of the plug contact element.

For example. the first contact portion has a frusto-conical or truncated pyramid-shaped wall.

For example. For example, the wall has at least one hole (eg, a slot or a slot) that is elongated in the direction of the first extension axis.

For example. the wall is a cavity formed circumferentially, in which the first screw connection part is arranged. In this case, the first threaded connection part is designed as a threaded bushing with an internal thread.

For example. For example, the wall has a first annular end portion that is shaped toward the first axis of extent and holds the first threaded portion in the cavity.

For example. the first screw connection part is designed as a threaded bolt with an external thread.

For example. For example, the conductor connecting portion and the first contact portion are integrally formed with each other. Alternatively, the conductor connection portion, the first contact portion and the first screw connection part are formed integrally with each other.

For example. the conductor connection portion is further configured to physically and electrically connect the male contact member to the conductor via a clamp connection or a crimp connection.

According to a second aspect of the invention, an electrical counter plug contact unit for producing a mechanical and electrical connection to a previously described plug contact unit is provided.

The mating plug contact unit has an electrically conductive mating plug contact element for producing the mechanical and electrical connection to the plug contact element of the plug contact unit.

The mating plug contact element has a second contact section, which has an inner circumference which enlarges toward an exposed end, which (for aligning the mating plug contact unit with the mating contact unit during insertion or, when the plug connection is made, to facilitate plugging in the mating plug contact unit) with the outer circumference the first contact portion of the plug contact element of the plug contact unit corresponds. In this case, the second contact section is in particular designed to produce a positive connection to the first contact section.

Esp. The second contact section has an inner contour (on the inner circumference) that is identical or corresponding to the outer contour (on the outer circumference) of the first contact section.

For example. The mating plug contact element furthermore has a second screw connection part which is set up to form a screw connection with the first screw connection part and thus mechanically and electrically connect the mating plug contact element to the plug contact element. In this case, the second screw connection part and the second contact section are designed to be concentric about a second extension axis of the mating plug contact element.

For example. the second threaded connection part is designed as a screw with a screw shaft and a screw head.

For example. The mating plug contact element furthermore has a holding part, which is embodied on an end of the second contact section facing away from the exposed end and is connected physically and electrically to the second contact section. In this case, the support member has an annular portion for holding the screw head of the screw connection part or the screw with an opening for passing the screw shank of the screw connection part.

For example. the second threaded connection part is designed as a threaded bushing.

For example. the second screw connection part and the second contact section are formed integrally with one another.

The above-described plug contact unit and mating plug contact unit can almost all power electronics devices with high current connections, such. As converters, DC / DC converters, (on-board chargers), high-voltage battery systems, electrical machinery, a motor vehicle, for the production of low-impedance, mechanically stable and vibration-proof high-current connections can be used.

According to a third aspect of the invention, a power electronics device, in particular a motor vehicle, especially a hybrid electric / electric vehicle, is provided.

The power electronics device has a first power electronics arrangement, which has a previously described plug-in contact unit. The power electronics device further comprises a second power electronics assembly having a mating plug-in contact unit previously described. In this case, the two power electronics assemblies are electrically connected to one another via the plug contact unit and the mating plug contact unit.

Advantageous embodiments of the above-described plug contact unit and the above-described mating plug contact unit are, as far as incidentally, transferable to the above-mentioned power electronics device, to be regarded as advantageous embodiments of the power electronics device.

list of figures

• 1 in einer schematischen Querschnittdarstellung eine elektrische Steckkontakteinheit gemäß einer ersten, beispielhaften Ausführungsform der Erfindung;
• 2 in einer weiteren schematischen Querschnittdarstellung eine elektrische Gegensteckkontakteinheit gemäß der ersten Ausführungsform der Erfindung;
• 3 in einer weiteren schematischen Querschnittdarstellung die Steckkontakteinheit aus 1 und die Gegensteckkontakteinheit aus 2 in einem zusammengesteckten Zustand;
• 4 in einer schematischen Darstellung ein Steckkontaktelement einer weiteren Steckkontakteinheit gemäß einer zweiten, beispielhaften Ausführungsform der Erfindung; und
• 5 in einer weiteren schematischen Querschnittdarstellung ein Gegensteckkontaktelement einer weiteren Gegensteckkontakteinheit gemäß der zweiten Ausführungsform der Erfindung.

In the following, exemplary embodiments of the invention are explained in more detail with reference to the accompanying drawings. Showing:

• 1 in a schematic cross-sectional view of an electrical plug contact unit according to a first exemplary embodiment of the invention;
• 2 in a further schematic cross-sectional view of an electrical mating contact unit according to the first embodiment of the invention;
• 3 in a further schematic cross-sectional view of the plug contact unit 1 and the mating connector unit 2 in a mated condition;
• 4 in a schematic representation of a plug-in contact element another Plug contact unit according to a second exemplary embodiment of the invention; and
• 5 in a further schematic cross-sectional view of a mating plug contact element of another mating plug contact unit according to the second embodiment of the invention.

Detailed description of the drawings:

1 shows a schematic cross-sectional view of an electrical plug contact unit SK according to a first exemplary embodiment of the invention. The plug contact unit is used SK for making a mechanical and electrical connection between an electrical conductor LT or an electrical cable KB with the conductor LT a first power electronics assembly to be described below, appropriately trained mating plug contact unit GK (please refer 2 ) of a second power electronics assembly.

The cable KB is doing as a standard cable with the aforementioned electrical conductor LT For example, from copper wires, one the conductor LT in the outer circumference enclosing Kabelschirmummantelung KS from a known screen material (or a mesh of the screen material), as well as a Kabelisolierummantelung KI formed from a known electrically insulating plastic.

The plug contact unit SK has an electrically conductive plug contact element KE1 on top of that, the leader LT with said mating plug contact unit GK mechanically and electrically connected in a crimp-screw connection.

The plug contact element KE1 has a conductor-side conductor connection portion LV (Crimp connection portion), which is formed in this embodiment as a crimp / clamping ring, the one end portion of the conductor LT is stuck and thus connected to this body and low impedance. Thus, the conductor connection section provides LV a crimp connection to the cable KB or ladder LT ago.

The plug contact element KE1 also has a first contact section KA1 acting as an axial extension of the conductor connection section LV in the direction of a first extension axis EA1 of the plug contact element KE1 via a connecting section VB of the plug contact element KE1 with the conductor connection section LV is integrally formed.

The contact section KA1 serves for producing a positive connection between the plug contact unit SK and the mating contact unit GK , In addition, the contact section facilitates KA1 during the insertion process, or in the production of the connector between the two contact units SK . GK , the orientation of the plug contact unit SK against the mating contact unit GK , For this purpose, the contact section KA1 a frustoconical or conical shaped wall WD on, the outer periphery of the short connecting portion VB of the plug contact element KE1 to the conductor connection section LV first increases steeply and then in one of the conductor connection section LV away direction over the entire remaining length slowly decreases or tapers. This encloses the contact section KA1 a substantially frusto-conical cavity HR1 for receiving a screw connection part to be described below SV1 of the plug contact element KE1 serves. The contact section KA1 indicates at one of the conductor connecting portion LV facing away, free end of an annular disc-shaped Abschlussendabschnitt FROM pointing towards the first axis of extension EA1 is shaped towards the cavity HR1 except for a circular opening OF1 ends on one side. The contact section KA1 and the conductor connection section LV are made of an elastically deformable, low-resistance metal alloy, for example. A copper alloy, integrally formed with each other.

The plug contact element KE1 also has the (first) aforementioned counter contact-side threaded connection part SV1 on, in this embodiment as an electrically conductive threaded bushing or threaded nut made of a mechanically stable and low-resistance metal alloy, for example. A copper alloy, with an internal thread IG is trained. As a threaded bushing is the threaded connection part SV1 set up, the plug contact element KE1 or the plug contact unit SK to connect physically and electrically via a screw with the mating connector. Here is the threaded connection part SV1 in the from the contact section KA1 enclosed cavity HR1 arranged. Furthermore, the threaded connection part SV1 in the cavity HR1 aligned so that opening OF2 of the internal thread IG provided screw connection part SV1 not (not even partially) from the final section FROM is covered, but with the opening OF1 of the contact section KA1 aligned.

The final section presses FROM of the contact section KA1 the threaded connection part SV1 towards a front of the ladder LT so that the threaded connection part SV1 in the cavity HR1 opposite the ladder LT is held securely and with the ladder LT is also physically and electrically connected.

The conductor connection section LV , the (first) threaded connection part SV1 including the final section FROM and the first contact section KA1 are to each other about the extension axis EA1 of the plug contact element KE1 and to an end portion of the conductor LT located in the conductor connection section LV clamped, concentrically executed.

The plug contact unit SK also has an insulating sleeve IH on, which consists of an electrically insulating material and the plug contact element KE1 including the end section of the ladder LT located in the conductor connection section LV is clamped, and a portion of the cable adjacent to this end portion KB border. In this case, the insulating sleeve IH a substantially hollow cylindrical wall having a substantially cylindrical cavity HR2 encloses. In this cavity HR2 is the plug contact element KE1 including the end section of the ladder LT and the portion of the cable adjacent this end portion KB arranged and is protected from external mechanical influences, such. B. shocks, protected. At one the cable KB facing the end of the wall, the insulating sleeve IH an annular end portion on the end of the wall of the insulating sleeve IH and the cavity enclosed by this HR2 one-sided limited and the cable KB holds motionless.

The plug contact unit SK also has a plug-in shielding sleeve (or shield connection sleeve) AH from one of a known screen material, the insulating sleeve IH encloses in their almost entire circumference and is physically connected to this. Like the insulating sleeve IH has the plug shield sleeve AH on one of the cables KB facing the end of an annular disc-shaped end portion, which is the insulating sleeve IH and the cavity enclosed by this HR2 one-sided limited and the cable KB holds motionless. The plug shield sleeve AH prevents propagation of electromagnetic radiation from the electrical connection of the plug contact unit SK ,

The plug contact unit SK also has a cable shielding sleeve KH on that the cable KB at one on the plug shield sleeve AH adjacent section encloses and thus the transition region of the cable KB to the plug contact element KE1 protects against external mechanical influences and moisture.

2 shows in a further schematic cross-sectional view of the previously mentioned electrical counter plug contact unit GK according to the first embodiment of the invention. In this case, the mating plug contact unit is used GK as a counterpart of the previously described plug contact unit SK (or a socket) for making the mechanical and electrical connection between the two aforementioned power electronics assemblies over the cable described above KB ,

The mating plug-in unit GK has an electrically conductive mating plug contact element GE1 (That is, a socket), which is a counterpart of the previously described plug contact element KE1 the plug contact unit SK is and with this a crimp / clamp-screw connection to the cable KB manufactures.

The mating plug contact element GE1 has a second contact section KA2 on, which has a to an exposed end towards enlarging and thus frusto-conical inner circumference. This encloses the second contact section KA2 a frusto-conical cavity HR3 , which is for receiving the first contact section KA1 of the plug contact element KE1 serves. In this case, the second contact section KA2 an inner contour that matches the outer contour of the first contact portion KA1 corresponds. In addition, the second contact section KA2 a cylinder jacket-shaped outer contour, with the likewise cylindrical jacket-shaped inner contour of the insulating sleeve IH of the plug contact element KE1 corresponds. With the first contact section KA1 of the plug contact element KE1 serves the second contact section KA2 for aligning the mating contact unit GK during insertion of the two contact units SK . GK to the insertion of the mating connector unit GK in the plug contact unit SK to facilitate.

The mating plug contact element GE1 also has a support part HT on, which faces away from the exposed end end of the second contact portion KA2 is executed and with the second contact portion KA2 is integrally formed. Here is the mounting part HT formed substantially hollow cylindrical and has an annular disk-shaped end portion EA on, extending between the second contact section KA2 and the rest of the support part HT is located and in the middle of a circular opening OF3 having. This encloses the mounting part HT a substantially cylindrical cavity HR4 to the previously described frusto-conical cavity HR3 of the second contact section KA2 adjoins and from this by the annular disc-shaped end portion EA of the support part HT is separated and at the same time through the opening OF3 at the end portion EA with the frusto-conical cavity HR3 is spatially connected.

In this case, the second contact section KA2 and the support part HT including the end section EA as well as the opening OF3 at the end portion EA to each other about an extension axis EA2 of Mating plug contact element GE1 concentric trained. Further, the second contact portion KA2 and the support part HT together with the end section of a mechanically stable and low-resistance metal alloy, for example a copper alloy.

The mating plug contact element GE1 also has a second threaded connection part SV2 on, which is set up with the first threaded connection part SV1 of the plug contact element KE1 to form a screw and thus the mating plug contact element GE1 with the plug contact element KE1 physically and electrically connect. In this case, the second threaded connection part SV2 formed in this embodiment as a screw of a mechanically stable and low-resistance metal alloy, for example. A copper alloy. As a screw, the second threaded connection part SV2 a screw head SK and a screw shaft SS on, with the screw shaft SS with an external thread AG is provided.

In this case, the screw or the second threaded connection part SV2 opposite the support part HT and thus the second contact portion KA2 movable. For producing the screw connection between the mating plug-in contact unit GK and the plug contact unit SK can the screw SV2 in the two cavities HR3 . HR4 be introduced, the screw shaft SS through the opening OF3 at the end portion EA in the cavity HR3 of the second contact section KA2 is introduced. In this imported state of the screw SV2 is the screw head SK in the cylindrical cavity HR4 of the support part HT during the screw shaft SS in the opening OF3 at the end portion EA of the support part HT and in the frusto-conical cavity HR3 of the second contact section KA2 located. The holding part holds HT including the end section EA the screw SV2 concentric with the remainder of the mating plug contact element GE1 , esp. To the second contact section KA2 , with respect to the second extension axis EA2 ,

Optionally, the mating plug contact unit GK an insulating sleeve and a Steckerschirmhülse (or a Schirmanbindungshülse), which is analogous to the insulating sleeve IH or the plug shield sleeve AH the plug contact unit SK the mating plug contact element GE1 encloses and protects against external mechanical influences and against moisture or radiation of electromagnetic radiation from the mating plug contact element GE1 prevented.

3 shows in a further schematic cross-sectional view of the plug contact unit SK and the mating contact unit GK in a mated condition.

Here are the plug contact unit SK and the mating contact unit GK as power electronics components of a power electronics device V with a first power electronics assembly LA1 and a second power electronics assembly LA2 educated. Here is the plug contact unit SK over the cable KB at the first power electronics assembly LA1 electrically connected. Analog is the mating plug contact unit GK at the second power electronics assembly LA2 electrically connected. The two power electronics assemblies LA1 . LA2 are via the crimp / clamp screw connection of the plug contact unit SK with the cable KB and the mating contact unit GK electrically connected.

By the elastic deformation of the first contact portion KA1 of the plug contact element KE1 become during the mating process of the mating plug-in unit GK in the plug contact unit SK possibly existing manufacturing tolerances of the plug contact unit SK and the mating contact unit GK or of the plug-in contact element KE1 and the mating plug contact element GE1 balanced, and the plug contact unit SK and the mating contact unit GK aligned with each other.

In the mated state, the second contact portion KA2 the mating plug contact element GE1 in the cavity HR2 between the insulating sleeve IH and the first contact section KA1 of the plug contact element KE1 pushed. As a result, a positive connection between the first and the second second contact portion KA1 . KA2 and thus between the plug contact unit SK and the mating contact unit GK manufactured. In this case, the first contact section KA1 of the plug contact element KE1 and the second contact portion KA2 the mating plug contact element GE1 with each other over an extended contact surface physically and thus electrically contacted, which is a primary, extensively extended low-impedance power transmission surface between the plug contact unit SK and the mating contact unit GK provides.

Further, the screw SV2 (or the second screw connection part SV2 ) of the mating plug contact element GE1 in the threaded bushing or in the first threaded connection part SV1 of the plug contact element KE1 screwed. The screw ensures the positive connection between the first and the second contact portion KA1 . KA2 against loosening and thus provides a stable and vibration-proof mechanical and electrical connection between the plug contact unit SK and the mating contact unit GK for sure. In addition, the screw provides a secondary, also extensively extended low-impedance power transmission surface between the plug contact unit SK and the mating contact unit GK ready.

By the frictional resistance at the contact surface between the first and the second contact portion KA1 . KA2 will the screw SV2 twist-proof in the threaded bushing SV1 recorded.

4 shows a schematic representation of a plug contact element KE2 another plug contact unit according to a second exemplary embodiment of the invention.

The plug contact element KE2 includes a conductor connection section LV , a first contact section KA1 and a first threaded connection part SV3 , The plug contact element KE2 differs from the plug contact element KE1 out 1 in that its threaded connection part SV3 as a threaded bolt with an external thread AG is trained. Here is the threaded connection part SV3 with the contact section KA1 and the conductor connection section LV integrally formed. In addition, the threaded connection part SV3 with the contact section KA1 and the conductor connection section LV in the direction of the extension axis EA1 of the plug contact element KE2 considered consecutively formed.

The plug contact element KE2 indicates the frustoconical shaped wall WD of the contact section KA1 Recesses in the form of slots or oblong holes LL on, extending in the direction of the extension axis EA1 of the plug contact element KE2 extend. These slots or slots LL facilitate the elastic deformation of the segments of the contact portion KA1 between the slots LL during insertion into a mating plug contact element to be described below GE2 and thus allow a flat extended form-fitting connection between the plug contact element KE2 and the mating plug contact element GE2 ,

The conductor connection section LV has on the hollow cylinder-shaped wall further recesses in the form of slots or slots, which are also in the direction of the extension axis EA1 of the plug contact element KE2 extend. These slots facilitate the deformation of the conductor connecting portion LV when making a crimp connection to the conductor LT , In addition, the segments of the conductor connection section deform LV between the slots with tensile force and thus contribute to the strain relief between the plug contact unit and the mating plug contact unit.

The plug contact element KE1 out 1 also has comparable recesses for the same purpose.

5 shows in a further schematic cross-sectional view of the aforementioned mating plug contact element GE2 another mating connector unit according to the second embodiment of the invention.

The mating plug contact element GE2 differs from the mating plug contact element GE1 out 2 in that this instead of a support member HT a second screw connection part SV4 in the form of a threaded bush with an internal thread IG having, with the second contact portion KA2 the mating plug contact element GE2 is integrally formed. In this case, the second threaded connection part extends SV4 or the threaded bush in the direction of the extension axis EA2 the mating plug contact element GE2 ,

When plugging in the plug contact element KE2 in the mating plug contact element GE2 becomes the first threaded connection part SV3 or the threaded bolt in the second threaded connection part SV4 or screwed into the threaded bush, so also a stable, vibration-proof screw connection between the plug contact element KE2 and the mating plug contact element GE2 arises.

The above-described crimp / clamp screw connection via the plug contact unit SK and the mating contact unit GK thanks to the double, namely the primary and the secondary, extended low-impedance power transmission surface and temperature and media resistant.

LIST OF REFERENCE NUMBERS

SK

Plug contact unit

EA1

extension axis

IH

insulating sleeve

AH

Plug-in shielding sleeve (or shield connection sleeve)

KE1, KE2

Plug contact element

LV

Conductor connection section

SV1, SV3

(first) threaded connection part

KA1

(first) contact section for positive locking

WD

wall

IG

inner thread

AG

external thread

FROM

terminal end

HR1

cavity

HR2

cavity

OF1

opening

OF2

opening

LL

Slot (or slot)

GK

Mating plug contact unit

EA2

extension axis

GE1, GE2

Mating plug contact element

KA2

(second) contact section for positive locking

SV2, SV4

(second) threaded connection part

SK

screw head

SS

screw shaft

HAS

supporting member

EA

end

OF3

opening

HR3

cavity

HR4

cavity

V

Power electronics device

LA1, LA2

Power electronics arrangement

KB

electric wire

LT

electrical conductor

KS

Cable shield sheath

KI

Kabelisolierummantelung

KH

Cable shield sleeve

Claims (15)

Electrical plug contact unit (SK) for producing a mechanical and electrical connection between an electrical conductor (LT) to a mating plug contact unit (GK), with an electrically conductive plug contact element (KE1, KE2), comprising a conductor connection section (LV) which is set up to physically and electrically connect the plug-in contact element (KE1, KE2) to the conductor (LT), a first screw connection part (SV1, SV3) which is set up to physically and electrically connect the plug contact element (KE1, KE2) to the mating plug contact unit (GK) via a screw connection, a first contact section (KA1) between the conductor connection section (LV) and the first screw connection part (SV1, SV3), which has an outer circumference tapering from the conductor connection section (LV) to the first screw connection part (SV1, SV3) for aligning the mating plug contact unit (GK) , Plug contact unit (SK) after Claim 1 in which the conductor connection section (LV), the first screw connection part (SV1) and the first contact section (KA1) are designed concentrically with each other about a first extension axis (EA1) of the plug contact element (KE1, KE2). Plug contact unit (SK) after Claim 1 or 2 , wherein the first contact portion (KA1) has a frusto-conical or truncated pyramid-shaped wall (WD). Plug contact unit (SK) after Claim 3 in that the wall (WD) has at least one hole (LL) which is elongated in the direction of the first extension axis (EA1). Plug contact unit (SK) after Claim 3 or 4 , wherein the wall (WD) is formed around a cavity (HR1), in which the first screw connection part (SV1) is arranged, wherein the first screw connection part (SV1) is formed as a threaded bushing with an internal thread (IG). Plug contact unit (SK) after Claim 5 in that the wall (WD) has an annular disk-shaped terminal end section (AB), which is shaped towards the first extension axis (EA1) and holds the first screw connection part (SV1) in the cavity (HR1). Plug contact unit (SK) according to one of Claims 1 to 4 , wherein the first screw connection part (SV3) is designed as a threaded bolt with an external thread (AG). Plug contact unit (SK) according to one of the preceding claims, wherein the conductor connection portion (LV) and the first contact portion (KA1) are formed integrally with each other, or, the conductor connection portion (LV), the first contact portion (KA1) and the first screw connection part (SV1, SV3 ) are integrally formed with each other. Plug contact unit (SK) according to one of the preceding claims, wherein the conductor connection portion (LV) is further arranged to physically and electrically connect the plug contact element (KE1, KE2) with the conductor (LT) via a clamping connection or a crimp connection. Electrical counter plug contact unit (GK) for producing a mechanical and electrical connection to a plug contact unit (SK) according to one of the preceding claims, with an electrically conductive mating plug contact element (GE1, GE2), comprising: - a second contact portion (KA2), the one to a having an enlarged end towards the inner circumference, which corresponds to the outer periphery of the first contact portion (KA1) of the plug contact element (KE1, KE2) of the plug contact unit (SK) Corresponds; a second screw connection part (SV2, SV4) which is set up to form a screw connection with the first screw connection part (SV1, SV3) and thus mechanically and electrically connect the mating plug contact element (GE) to the plug contact element (KE1, KE2), wherein the second screw connection part (SV2, SV4) and the second contact section (KA2) are designed to be concentric about a second extension axis (EA2) of the mating plug contact element (GE). Mating connector unit (GK) after Claim 10 wherein the second screw connection part (SV2) is designed as a screw with a screw shaft and a screw head. Mating connector unit (GK) after Claim 11 wherein the mating plug contact element (GE) further comprises: - a support member (HT) which is at an end remote from the exposed end of the second contact portion (KA2) and with the second contact portion (KA2) is physically and electrically connected, - Holder part (HT) has an annular end portion (EA) for holding the screw head of the screw connection part (SV2) with an opening (OF3) for passing the screw shank of the screw connection part (SV2). Mating connector unit (GK) after Claim 10 , wherein the second screw connection part (SV4) is designed as a threaded bushing. Mating connector unit (GK) after Claim 13 wherein the second screw connection part (SV4) and the second contact part (KA2) are integrally formed with each other. Power electronic device (V), comprising: - a first power electronics assembly (LA1) with a plug contact unit (SK) according to one of Claims 1 to 9 ; - A second power electronics assembly (LA2) with a mating plug contact unit (GK) according to one of Claims 10 to 14 ; - Wherein the two power electronics assemblies (LA1, LA2) via the plug contact unit (SK) and the mating plug contact unit (GK) are electrically connected together.

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