Lamellar plug contact

Abstract

The present invention relates to a plug contact for electrically contacting components in a high-voltage system, comprising a high-voltage current conductor and a tolerance-compensating contact unit. The contact unit is designed as a separate spring element, in particular as a contact cage with multiple lamellae. The spring element is firmly connected, in particular directly, to one end of the high-voltage current conductor in order to enable tolerance-compensating high-voltage contacting during assembly of a high-voltage current conductor. Furthermore, the invention relates to a high-voltage assembly comprising a high-voltage component and such a plug contact, as well as a method for producing such a plug contact.

Description

The present invention relates to a plug contact for the electrical contacting of components in a high-voltage system with a high-voltage current conductor and a tolerance-compensating contact unit. The invention furthermore relates to a high-voltage assembly having a high-voltage component and a plug contact and to a method for producing a plug contact.In modern electric vehicles, electric motors are used for vehicle drive, the supply of which with electrical energy is provided by means of a high-voltage system or a high-current system. In such a high-voltage system, a high-voltage accumulator is usually used as an electrical energy source, which is connected via corresponding high-voltage current conductors both to a high-voltage voltage supply and to the associated power electronics and to the electric drive. In contrast to low-voltage systems, which are used in the motor vehicle sector, especially in on-board electrical systems, a high-voltage system with DC voltages above 60 V up to 1.5 kV is used. Alternating voltages above 30 V to 1 kV are also referred to as high-voltage systems. In order to maintain the short charging times necessary for modern electric vehicles and meanwhile also legally required, a high current intensity must be provided in addition to a high voltage. Only in this way is it technically possible to store the necessary electrical power in the high-voltage accumulator within a short time and to recall it again later. The currents occurring in this case amount to up to 750 A and are thus higher by almost the factor 50 than the maximum protection of 16 A that is common in domestic electrics.The high-voltage current conductors for connecting the high-voltage accumulator, the power electronics and the electric drive must ensure reliable current transmission at all times, especially for the power electronics systems of electric vehicle drives. This represents a challenging challenge, especially in the case of severe temperature differences in the high-voltage system or external ambient loads on the high-voltage current conductors and their electrical contacting.In addition to rigid connections by means of complicated plugs or screwed connections, tolerance-compensating connection adapters are known for reliable current transmission in high-voltage systems, which ensure efficient electrical contacting and reliable current transmission even in the case of severe temperature differences or external ambient loads. Such connection adapters can compensate for axle offsets and assembly tolerances in up to three planes and guarantee a reliable current transmission at any operating time via tolerance-compensating contact receptacles. Such high-voltage connection adapters have a connection module which is fastened via corresponding connection means to the respective high-voltage components, for example the power electronics, and which makes possible the contacting via inner contact tabs with a solid contact pin which is movable with respect to the contact tabs and which can then be connected via a further high-voltage connection adapter to a corresponding high-voltage busbar or further high-voltage components. At the same time, a plurality of components of the power electronics which are arranged one above the other can also be contacted via the contact pin and enable reliable current transmission.The object of the present invention is thus to provide an improved electrical contacting of high-voltage components, with which a reliable current transmission in the event of high temperature differences and external ambient loads and a simple mounting of the components of a high-voltage system are possible.The object underlying the invention is achieved for a plug contact of the generic type for the electrical contacting of components in a high-voltage system in that the contact unit is designed as a separate spring element, wherein the spring element is fixedly connected, in particular directly connected to a free plug end of the high-voltage current conductor for insertion into a connection opening. Such a contact unit enables a reliable and tolerance-compensating contacting during the assembly of a high-voltage current conductor between the components of the high-voltage system to be contacted, for example the power electronics or high-voltage busbars, wherein the spring element firmly connected to the high-voltage current conductor can compensate assembly tolerances in three planes. The contact unit according to the invention thus enables electrical contacting between the high-voltage components without complicated screw connection and without additional connecting wires or tolerance-compensating components. This three-dimensionally movable contact unit makes possible, via the spring element, contacting, which is easy to handle and automatize, via a plug connection, wherein the plug end of the high-voltage current conductor provided with the spring element can be easily positioned in an associated connecting opening and can be easily inserted. In addition to compensating manufacturing tolerances, thermal expansion due to severe temperature differences or position displacements due to external ambient loads can also be compensated during operation.A favorable embodiment provides that the spring element has a spring base and an elastic spring region, wherein the spring base is connected to the plug end of the high-voltage current conductor and the spring region is preferably arranged parallel to the plug end of the high-voltage current conductor. The spring region is designed to be resilient in the radial direction to the plug end of the spring element and accordingly also perpendicular to the plug direction of the plug end of the high-voltage current conductor into a connecting opening. This enables good electrical contact with respect to the inner wall of the connecting opening.Expediently, the spring element, in particular a spring base, can be clamped onto the plug end of the high-voltage current conductor and / or be connected to the plug end of the high-voltage current conductor in a materially integral manner. Clamping the spring element onto the plug end of the high-voltage current conductor results in a secure electrical contact which can be easily produced and handled during the production and assembly of the plug contact. By means of the alternative or additional cohesive connection, for example by means of a soldered or welded connection, the position of the spring element on the plug end of the high-voltage current conductor can be permanently fixed.A particular configuration provides that the spring element is designed as a contact cage, wherein the contact cage has a first end ring which is connected to the plug end of the high-voltage current conductor, and a plurality of mutually juxtaposed lamellae which project outwards with respect to the plug end of the high-voltage current conductor and preferably run in the longitudinal direction of the plug end of the high-voltage current conductor. Such a contact cage can be produced as a single-piece component and separately from the high-voltage current conductor and enables the provision of a tolerance-compensating high-voltage connection between the high-voltage current conductor and other high-voltage components with few components and simple method steps. The lamellae arranged next to one another run generally parallel to the axis of the current conductor, but embodiments with lamellae inclined up to 30° or up to 45° are also conceivable. Such a contact cage with a plurality of plates arranged next to one another enables an effective compensation of the production and assembly tolerance between the high-voltage current conductor and a high-voltage component or the connection opening in the high-voltage component and a reliable positioning of the plug end of the high-voltage current conductor during the assembly of the high-voltage current conductor thanks to the elasticity of the plates. At the same time, manufacturing tolerances and alignment errors can also be compensated and reliable electrical contacting and reliable current transmission between the high-voltage components can be realized.Preferably, the contact cage can have a second end ring, wherein the lamellae arranged next to one another extend between the first end ring and the second end ring and are arched outwards. The lamellae are connected to the first and second end rings in such a contact cage and thus form a stable unit which can be easily handled during the mounting of the contact cage on the plug end of the high-voltage current conductor. The contact cage can be supported via the first and second end rings on the outer circumference of the high-voltage current conductor. In addition to the more secure positioning, such a shape of the contact cage in a high-voltage assembly also enables the high-voltage current conductor to be removed with the contact cage and thus enables simple replacement of high-voltage components.A useful embodiment provides that a curvature of the lamellae arranged next to each other amounts to at least the simple material thickness of the lamellae, preferably at least one and a half times the material thickness of the lamellae. The curvature of the contact cage here is the difference between the distance of the first end ring, which typically has the same diameter as a second end ring, and the maximum height of the outwardly protruding curvature of the lamellae with respect to the first end ring in the direction perpendicular to the longitudinal axis of the plug end of the high-voltage current conductor. With respect to an average diameter of the high-voltage current conductor at its plug end, the curvature is typically at least 10%, preferably at least 15%. In addition to a sufficiently large tolerance compensation during the electrical contacting of the plug contact with a high-voltage component, the outwardly projecting curvature of the lamellae arranged next to one another also facilitates an insertion aid during the assembly of the plug contact. With a view to a secure contacting of the plug contact in a connecting opening, the curvature is expediently not greater than four times the material thickness of the lamellae.A modification provides that the contact cage has a stop which abuts an end face of the high-voltage current conductor, preferably has at least one inwardly bent stop tab. Such a stop allows a secure positioning of the contact cage on the high-voltage current conductor and prevents the contact cage from slipping when the plug end of the high-voltage current conductor is inserted into a connecting opening of a high-voltage component. Accordingly, during assembly, complicated crimping or intensive heat input for the connection of the contact cage to the plug end of the high-voltage current conductor can be dispensed with. An inwardly bent stop tab can be adapted in its contour to the end face of the high-voltage current conductor and can follow an end face chamfer of the high-voltage current conductor in its bending radius. For a secure fastening of the contact cage, the stop can be connected to the high-voltage current conductor in a materially bonded manner, preferably welded. Although the material connection of the stop to the plug end of the high-voltage current conductor may require a certain amount of heat input, the amount of heat input for purely fixing the stop is relatively small and locally limited.For a welded connection of the stop to the high-voltage current conductor, a corresponding configuration of the stop is necessary for a welded connection to the high-voltage current conductor.In a practical embodiment of the plug contact for the electrical contacting of components in a high-voltage system, the spring element can be produced as a stamped and bent component, in particular as a stamped and bent contact cage. The production of a suitable spring element or contact cage as a stamped and bent component enables simple and cost-effective production from a metal sheet or metal strip with good and uniform quality. In the case of a stamped and bent contact cage, a butt seam is produced between the bent-together roller ends of the stamped sheet metal part, which joint seam typically extends axially parallel to the longitudinal axis of the contact cage or to the longitudinal axis of the plug end. In this case, the bent-together ends are usually not connected to one another in the region of the joint seam.For good mechanical and electrical properties, the spring element can be made of metal, preferably made of a copper alloy. As a stamped and bent component, the spring element or a contact cage can be manufactured from a metal sheet or a metal sheet strip, which can be supplied directly to a stamping device. In addition to steel and in particular spring steel, which enable good durability of the separate spring element and thus of the entire plug contact for the electrical contacting of high-voltage components, a copper alloy can be used for good electrical conductivity of the plug contact and of the spring element itself, in particular high-performance alloys the CuNiSi or CuCrMn, in order to provide good spring-elastic properties in addition to good electrical conductivity.In practice, the contact cage has at least eight, preferably at least ten, individual laminations which enable a uniformly distributed electrical contact and good resilient fixing of the plug end of the high-voltage current conductor in a connection opening of a high-voltage component. The lamellae which project outwards in the radial direction and are resiliently prestressed with respect to the first end ring of the contact cage can achieve a good plug-in behavior and a good mechanical and electrical contact via the distribution of the multiplicity of individual lamellae on the circumference of the plug-in end of the high-voltage current conductor which is distributed relatively uniformly on the circumference of a connection opening.The present invention further relates to a high-voltage assembly having a high-voltage component and a high-voltage current conductor with a tolerance-compensating plug contact described above, wherein the high-voltage component has a connection opening in which a plug end of the high-voltage current conductor is accommodated, wherein the spring element, which is produced separately and is preferably formed in one piece, is fixedly connected to the plug end of the high-full current conductor and is inserted together with the plug end of the high-voltage current conductor into the connection opening of the high-voltage component, and wherein the spring element forms a high-voltage connection between the high-voltage current conductor and the high-voltage component. Such a high-voltage assembly according to the invention enables reliable tolerance-compensating electrical contacting of a high-voltage current conductor with a high-voltage component. The spring element, which is arranged fixedly and in particular directly, on the plug end of the high-voltage current conductor or the contact cage arranged directly there enables simple assembly to be handled without crimping or screw connections and without significant heat input with simultaneously a small number of parts for the contact. The plug end of the high-voltage current conductor can be positioned easily with respect to the connecting opening and can be moved three-dimensionally in the assembled state, so that manufacturing and assembly tolerances in up to three planes can be compensated. Furthermore, despite the tolerance compensation between the contact partners, such a high-voltage assembly enables the reliable transmission of high current intensities without electrical losses and thermal loads. The tolerance-compensating plug contact between the high-voltage component and the high-voltage current conductor also enables the connection of components made of different materials and the use of busbars made of materials with a low electrochemical potential. For secure contacting, a bushing can be arranged in the connecting opening of the high-voltage component, preferably pressed in or welded, which then forms secure electrical contacting with the plug end of the high-voltage current conductor via the spring element. In addition, such a bushing makes possible an insertion aid for the plug end of the high-voltage current conductor via its laterally chamfered flange and an insertion stop for the plug end via its base.A reasonable embodiment of the high-voltage assembly provides that the spring element is designed as a contact cage, wherein the contact cage has a plurality of lamellae arranged next to one another, which project outwards with respect to the plug end of the high-voltage current conductor, and wherein the contact cage is firmly connected to the plug end of the high-voltage current conductor. Such a separately produced contact cage of one-piece design not only allows the spring element to be provided cost-effectively, but also allows the contact cage to be mounted easily on the plug end of the high-voltage current conductor and, despite a minimum number of parts, allows the provision of a tolerance-compensating high-voltage connection. The radial play of the lamellae which are outwardly curved by the at least simple material thickness allows a simple tolerance compensation between the components of the high-voltage assembly, wherein the differences of the diameters of the plug end of the high-voltage current conductor and the connecting opening of the high-voltage component are compensated by the spring element or the contact cage. Preferably, the high-voltage current conductor can be angled adjacent to the plug end of the high-voltage current conductor provided with the spring element, preferably angled by approximately 90°, in order to form a high-voltage assembly of planar construction. Especially in the field of electric vehicles with limited construction spaces, the dimensioning of high-voltage assemblies plays an important role and can decide on the feasibility of concepts for supplying electrical energy.Furthermore, the present invention relates to a suitable method for producing a contact cage for a plug contact of a high-voltage current conductor. This method comprises punching a flat stamped part from a metal sheet including a contour of the spring region, in particular a contour of mutually adjacent blades, the subsequent stamping of the flat stamped part to form the spring region, in particular the resilient blades, and the final bending or rolling of the stamped stamped stamped part to form a contact cage. Such a punching-bending method allows a very cost-effective production of spring elements for the electrical contacting of a high-voltage current conductor in a high-voltage system. Furthermore, such a method enables fully automated production of plug contacts for the electrical contacting in a high-voltage system without additional components on the high-voltage current conductor outside the contact cage. The contour of the spring region cut out during the punching process is to be regarded as a planar preform of the spring region, from which the spring region of the contact cage is produced by the subsequent stamping and bending of the stamped part. When stamping the flat stamped part, the next to one another blades of the contact cage are bent in the direction of the outer side of the contact cage. The punching of the flat stamped part from a metal sheet or a metal sheet strip does not automatically comprise the final separating of the stamped part from the metal sheet strip. The actual cutting out or punching out of the stamped part can take place both before or after the stamping in order to form the spring region. The angled, non-stamped shape of the contact cage is to be considered here as a planar stamped part.A variant of the method for producing a contact cage provides that the stamping of the flat stamped part comprises the formation of a stop on the contact cage, in particular at least one inwardly bent stop tab, wherein the stop is preferably formed for the formation of a welded connection to a high-voltage current conductor. Such a stop enables simple and quick assembly and the secure fastening of the contact cage to the plug end of the high-voltage current conductor.Hereinafter, non-limiting embodiments of the present invention will be described in detail with reference to exemplary drawings. The following are shown: FIG. 1 shows a perspective view of a high-voltage assembly according to the invention with a plug contact according to the invention and a high-voltage busbar, FIG. 2 shows a sectional view through the high-voltage assembly from FIG. 1 in an assembled state, FIG. 3 shows a perspective bottom view of the plug contact according to the invention from FIGS. 1 and 2, FIG. 4 shows a perspective view of a contact cage for the plug contact according to the invention from FIG. 3, and FIG. 5 shows a plan view of a planar stamped part for bending the contact cage from FIG. 4.FIG. 1 shows a perspective view of a high-voltage assembly 1 according to the invention in an unmounted state consisting of a tolerance-compensating plug contact 2 with a high-voltage current conductor 3 and a contact unit designed as a separate spring element 4. The spring element 4 produced separately from the high-voltage current conductor 3 is arranged at a free end of the high-voltage current conductor 3, which can be inserted as a plug end 5 of the plug contact 2 into an associated high-voltage component 6 of the high-voltage assembly 1. In the embodiment of a high-voltage assembly 1 shown in FIG. 1, the high-voltage component 6 is a high-voltage busbar 7 which is provided with a contact bushing 8. The contact socket 8 is connected to the busbar by means of pressing-in or welding, so that aluminum or other materials with a low electrochemical potential can also be used as material for the high-voltage busbar 7. The contact socket 8 forms on the upper side of the high-voltage busbar 7 a flange 9 and a connecting opening 10, in which the plug end 5 with the spring element 4 can be inserted. The flange 9 serves substantially for the secure positioning of the contact socket 9 in the high-voltage busbar 7 and the electrical contacting thereof. Furthermore, the flange 9 and its chamfer at the edge of the connecting opening 10 facilitate the insertion of the plug end 5 of the plug contact 2 into the connecting opening 10. Alternatively, a high-voltage busbar 7 can also be produced from a corrosion-resistant material, for example copper, and the connection opening 10 can be formed directly in the high-voltage busbar 7. The spring element 4 has at least one spring base 12 and an elastic spring region 13, wherein the spring base 12 is firmly connected to the plug end 5 of the high-voltage current conductor 3 and provides the electrical contacting of the spring element with respect to the high-voltage current conductor 3. The elastic spring portion 13 protrudes from the mating end 5 and, as shown in FIG. 2, contacts the inner periphery of the female contact 8 in the connection opening 10.The sectional view of the assembled high-voltage assembly 1 in FIG. 2 clearly shows the receptacle and the clamping connection of the spring element 4 in the cylindrical connecting opening 10 of the contact socket 8. The plug end 5 is inserted into the connection opening 10 as far as the base 11 of the contact socket 8, wherein the elastic spring region 13 of the spring element 4 bears elastically against the inner circumference of the connection opening 10 and forms an electrical high-voltage contact between the plug end 5 of the high-voltage current conductor 3 and the high-voltage component 6. The high-voltage component 6 is designed here as a high-voltage busbar 7 made of a material having a low electrochemical potential with a contact socket 8 made of a material having a high electrochemical potential in order to avoid corrosion with respect to the plug contact 2. The high-voltage busbar 7 has, at an end facing away from the contact socket 8, an angled connection region with a connection opening 14 for electrical contacting in the high-voltage system.FIGS. 3 and 4 each show an enlarged illustration of the spring element 4 for the plug contact 2 shown in FIGS. 1 and 2. the spring element 4 is designed as a contact cage 15 which is seated fixedly on the plug end 5 of the high-voltage current conductor 3. The contact cage 15 has a first end ring 16 and a plurality of lamellae 17 extending in the longitudinal direction of the plug end 5, which extend as far as a second end ring 18. In this case, the first end ring 16 and the second end ring 18 are designed as closed rings apart from a butt seam 19 and are placed in a clamping manner on the plug end 5 of the high-voltage current conductor 3. The lamellae 17 are arranged uniformly distributed on the circumference of the plug end 5 or of the first and second end rings 16, 18 and have an outwardly protruding curvature between the one first end ring 16 and the second end ring 18 in order to enable a good electrical contact to the connection opening 10 in the high-voltage component 6. Furthermore, on the outer side facing away from the plates 17, the second end ring 18 is provided with four inwardly bent stop tabs 20, which in turn are uniformly distributed on the circumference. The stop tabs 20 prevent incorrect positioning of the contact cage 15 on the plug end 5, since the stop tabs 20 bear against the end face 21 of the plug end 5. For the best possible contact of the stop tabs 20 with the end face 21, the bending of the stop tabs 20 follows the contour of the end face 21. To fix the contact cage 19, the stop tabs 20 can be welded or otherwise integrally bonded to the end face 21 of the plug end 5, such that the contact cage 15 remains securely in its position on the plug end 5 even when the plug end 5 is moved in the longitudinal direction of the plug end.A method for producing a spring element 4 of a plug contact 2 for high-voltage connections, which spring element is designed as a contact cage 15, is described below. A copper alloy, for example, is used as suitable material for producing the contact cage 15, preferably a high-performance copper alloy, for example CuNiSi or CuCrMn, which is provided as flat sheet metal or as strip material. The planar developed contour of the contact cage 15 is then initially stamped from the sheet metal material, wherein this planar stamped part 22 can be further connected to the sheet metal material in order to facilitate the subsequent stamping. The stamping of the flat stamped part 22 is then carried out only after the stamping. However, the flat stamped part 22 can also be separated from the sheet metal material simultaneously with the stamping of the contour of the flat stamped part 22. FIG. 5 shows a view of the flat stamped part 22, The plates 17 of the elastic spring region 13 arranged next to one another between the first end ring 16 and the second end ring 18 and the stop lugs 20 protruding on the second end ring 18 with respect to the plates 17 can now be seen clearly. Following the stamping of the flat stamped part 22, the stamping of the mutually adjacent blades 17 of the elastic contact region 13 and of the stop lugs 20 follows, wherein the blades 17 are curved outwards and the stop lugs 20 are bent inwards in accordance with the contour of the end face 21 of the plug end 5. If the separation of the flat stamped part 22 from the metal sheet or the strip material has not already been integrated during the stamping of the flat stamped part 22, the separation of the flat stamped part 22 takes place after the stamping. The stamped and punched-out shape is then bent or rolled into a contact cage 15, wherein the outwardly curved, adjacently extending lamellae 17 protrude on the outer side of the contact cage 15 opposite the first end ring 16 and / or the second end ring 18. The roller ends 23 provided on the outer edges of the elastic spring region 13 formed by the slats 17 face one another by the bending of the flat stamped part 22 and together form the butt seam 19 of the contact cage 15, wherein the two roller ends 23 are arranged parallel to one another in the butt seam 19 of the contact cage 15 in the radial direction.The plug contacts 2 provided with a contact cage 15 as spring element 4 are used in a high-voltage assembly 1 according to the invention for an electrical and mechanical connection of a high-voltage current conductor 3 to a high-voltage component 6, in order to provide reliable current transmission, in particular in the power electronic systems of electric vehicles, for tolerance-compensating high-voltage contacting. Tolerances in up to three planes due to operation and assembly can thus be compensated. In addition to the tolerance compensation with respect to the connecting opening 40, the plug contact 2 also permits tolerance compensation in the longitudinal direction of the plug contact 2. at the same time, the construction of this plug contact 2 with a spring element 4 or contact cage 15 arranged on the plug end 5 of the high-voltage current conductor 3 permits a flat-construction high-voltage assembly 1, since the orientation of the high-voltage current conductor 3 beyond the plug end 5 is insignificant for the formation of a tolerance-compensating electrical contact.List of reference numbers:1 High-voltage assembly 2 Plug contact 3 High-voltage current conductor 4 Spring element 5 Plug end 6 High-voltage component 7 High-voltage current rail 8 Contact socket 9 Flange 10 Connecting opening 11 Base 12 Spring base 13 Elastic spring region 14 Connecting opening 15 Contact cage 16 First end ring 17 Lamellae 18 Second end ring 19 Butt seam 20 Stop lugs 21 End side 22 Planar stamped part 23 Roller ends

Claims

Plug contact (2) for the electrical contacting of components in a high-voltage system, having a high-voltage current conductor (3) and a tolerance-compensating contact unit, characterized in that the contact unit is designed as a separate spring element (4), wherein the spring element (4) is fixedly connected, in particular directly, to a plug end (5) of the high-voltage current conductor (3).Plug contact (2) according to Claim 1, characterized in that the spring element (4) has a spring base (12) and an elastic spring region (13), wherein the spring base (12) is connected to the plug end (5) of the high-voltage current conductor (3) and the elastic spring region (13) is preferably arranged parallel to the plug end (5) of the high-voltage current conductor (3).Plug contact (2) according to Claim 1 or 2, characterized in that the spring element (4), in particular a spring base (12), is clamped onto the plug end (5) of the high-voltage current conductor (3) and / or is connected to the plug end (5) of the high-voltage current conductor (3) in a materially integral manner.Plug contact (2) according to one of Claims 1 to 3, characterized in that the spring element (4) is designed as a contact cage (15), wherein the contact cage (15) has a first end ring (16), which is arranged on the plug end (5) of the high-voltage current conductor (3), and a plurality of mutually juxtaposed lamellae (17), which project outwards with respect to the plug end (5) of the high-voltage current conductor (3) and preferably run in the longitudinal direction of the plug end (5) of the high-voltage current conductor (3).Plug contact (2) according to Claim 4, characterized in that the contact cage (15) has a second end ring (18), wherein the lamellae (17) arranged next to one another extend between the first end ring (16) and the second end ring (18) and are curved outwards.Plug contact (2) according to Claim 5, characterized in that a curvature of the lamellae (17) arranged next to one another amounts to at least the simple material thickness of the lamellae (17), preferably at least one and a half times the material thickness of the lamellae (17).Plug contact (2) according to one of Claims 4 to 6, characterized in that the contact cage (15) has a stop which bears against an end face (27) of the high-voltage current conductor (3), preferably at least one inwardly bent stop tab (20).Plug contact (2) according to Claim 7, characterized in that the contact cage (15) is connected, preferably welded, to the high-voltage current conductor (3) in a materially integral manner at the stop.Plug contact (2) according to one of Claims 1 to 8, characterized in that the spring element (4) is produced as a stamped and bent component, in particular is produced as a stamped and bent contact cage (15).Plug contact (2) according to one of Claims 1 to 9, characterized in that the spring element (4) is produced from metal, preferably is produced from a copper alloy.High-voltage assembly (1) with a high-voltage component (6) and a high-voltage current conductor (3) with tolerance-compensating plug contact (2) according to one of Claims 1 to 10, characterized in that the high-voltage component (6) has a connection opening (10), in which a plug end (5) of the high-voltage current conductor (3) is accommodated, wherein the separately produced spring element (4) is fixedly connected to the plug end (5) of the high-voltage current conductor (3) and is inserted together with the plug end (5) of the high-voltage current conductor (3) into the connection opening (10) of the high-voltage component (6), wherein the spring element (4) forms a high-voltage connection between the high-voltage current conductor (3) and the high-voltage component (6).High-voltage assembly (1) according to Claim 11, characterized in that the spring element (4) is designed as a contact cage (15), wherein the contact cage (15) has a plurality of mutually juxtaposed lamellae (17) which project outwards with respect to the plug end (5) of the high-voltage current conductor (3), and wherein the contact cage (15) is fixedly connected to the plug end (5) of the high-voltage current conductor (3).High-voltage assembly (1) according to Claim 11 or 12, characterized in that the high-voltage current conductor (3) is angled, preferably angled by approximately 90°, adjacent to the plug-in end (5) of the high-voltage current conductor (3) provided with the spring element (4).Method for producing a contact cage (15) for a plug contact (2) of a high-voltage current conductor (3), having the steps: punching a planar stamped part (22) from a metal sheet including a contour of the spring region (4), in particular a contour of mutually adjacent lamellae (17); stamping the planar stamped part (22) to form the spring region (4), in particular resilient lamellae (17), and bending the stamped stamped stamped part to form a contact cage (15).Method for producing a contact cage (15) according to claim 14, wherein the stamping of the flat stamped part (22) comprises the formation of a stop on the contact cage (15), in particular at least one inwardly bent stop tab (20), wherein the stop is preferably formed for the formation of a welded connection to a high-voltage current conductor (3).

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