Manufacturing process for an electrical high-voltage contact

Abstract

The invention relates to a manufacturing method for an electrical high-voltage contact (1), comprising the following steps: a. Providing a wire blank (3); b. upsetting the wire blank (3) in an end region (4); c. Embossing at least the compressed end region (4) of the wire blank (3) to form a connecting section (7, 8) in an embossing direction (9). With the manufacturing process proposed here, a particularly cost-effective and safe high-voltage contact can be produced by compressing an end region.

Description

[0001] The invention relates to a manufacturing method for an electrical high-voltage contact, a high-voltage contact, and an electric drive machine with such a high-voltage contact for a motor vehicle.

[0002] As electric drives in motor vehicles advance, the interfaces to the electric drive motor and / or converter are becoming increasingly complex. This involves the use of interconnection assemblies in which high-voltage contacts, for example, overmolded as copper components, are used to conduct current. In electric drive motors, such high-voltage contacts are part of a so-called busbar, i.e., a busbar. Such busbars connect, for example, a plurality of conductor ends of stator windings to an electrical line, which supplies the electric drive motor with power.

[0003] In industrial practice, such high-voltage contacts are, for example, stamped and bent copper components made from flat material or strip material. There are also high-voltage contacts made from copper wire. Such high-voltage contacts have a connection section for a conductor or wire on the side facing away from the corresponding high-voltage component, which connects the conductor or wire to the high-voltage contact using a screw connection.

[0004] The connecting sections must contain sufficient material to transmit the necessary electrical power. The blanks for high-voltage contacts made of flat material are designed accordingly large, resulting in significant waste beyond the connecting sections.

[0005] Based on this, the present invention is based on the object of at least partially overcoming the disadvantages known from the prior art. The features of the invention are derived from the independent claims, for which advantageous embodiments are presented in the dependent claims. The features of the claims can be combined in any technically reasonable manner, whereby the explanations from the following description as well as features from the figures, which comprise additional embodiments of the invention, can also be consulted for this purpose.

[0006] The invention relates to a manufacturing method for an electrical high-voltage contact, comprising the following steps: a. Providing a wire blank; b. Upsetting the wire blank in one end area; c. Embossing at least the compressed end region of the wire blank to form a connecting section in one embossing direction.

[0007] Unless explicitly stated otherwise, ordinal numbers used in the preceding and following descriptions serve only to clearly distinguish them and do not reflect the order or ranking of the designated components. An ordinal number greater than one does not necessarily imply that another such component must be present.

[0008] A manufacturing method for a high-voltage electrical contact is proposed here. Such a high-voltage contact is a contact of a high-voltage component, preferably in the high-voltage system of a motor vehicle. For example, such a high-voltage component is an electric drive motor and / or a converter, for example, an AC / DC converter or a DC / DC converter.

[0009] The high-voltage contact is designed to connect the high-voltage component to a high-voltage electrical line. For example, several high-voltage contacts, by means of which, for example, the individual phases of a high-voltage component are connected, are jointly encapsulated, preferably by injection molding, in a casing, preferably made of plastic. For example, the high-voltage contacts are each part of a busbar. For example, such a busbar further comprises a collective contact, by means of which the high-voltage contact is electrically connected to a plurality of conductor ends in the assembled state.

[0010] The manufacturing process comprises at least the steps a., b. and c. explained in more detail below in the order mentioned.

[0011] In step a., a wire blank is provided. The wire blank preferably has a round cross-section. For example, the wire blank is made of copper or a copper-based alloy. The wire blank is preferably a section of a sold-by-the-meter wire. The wire blank preferably has a constant diameter along its longitudinal direction. The longitudinal direction is defined here such that it is aligned along the wire path, for example, forming a normal to the round cross-section.

[0012] For example, the wire blank is between 2 cm [two centimeters] and 10 cm [ten centimeters] long along the longitudinal direction and has a diameter of maximum 1 cm [one centimeter], particularly preferably maximum 0.5 cm.

[0013] In step b, the wire blank is compressed in an end region. The diameter of the cross-section in the end region is increased at the expense of the length of the wire blank and / or the diameter of the remaining wire blank. At an end region along the longitudinal direction of the wire blank, the diameter of the wire blank is thus increased compared to the remaining wire blank. For example, the diameter of the wire blank is increased by at least 5% (five percent), particularly preferably at least 10% (ten percent).

[0014] In step c., the end region of the wire blank compressed in step b. is stamped. In other words, the section of the wire blank with the larger diameter is flattened to a predetermined thickness along the stamping direction. This creates a connecting section at the corresponding end region of the wire blank. The connecting section is designed to provide electrical contact to an electrical line, to a conductor end of the high-voltage component, or to a collective contact to a plurality of conductor ends, and is preferably mechanically fastened to this / these. The connecting section is preferably designed to be connected to the electrical line, the collective contact, or the conductor end by means of a screw connection or rivet connection. For example, the connecting section comprises a hole in the stamping direction for this purpose.

[0015] The proposed manufacturing process enables simple, cost-effective, and material-saving production of the high-voltage contact. Furthermore, sufficient material thickness can be provided in the connection section, allowing large amounts of current to be transmitted safely.

[0016] It is further proposed in an advantageous embodiment of the manufacturing method that the connection section is formed at a first end region of the high-voltage contact as a component connection for an electrical conductor end of a high-voltage component, and / or the connection section at the opposite second end region of the high-voltage contact is designed as a screw-on section for a high-voltage cable.

[0017] According to the first of the exemplary embodiments proposed here, the connection section, which is stamped in step c., is formed at a first end region of the high-voltage contact as a component connection for an electrical conductor end of a high-voltage component. The connection section or component connection is designed to be weldable, screwable, rivetable, and / or clampable to a collective contact, which is connected or connectable to a plurality of conductor ends, or to a conductor end in order to electrically and mechanically connect the conductor end or ends to the high-voltage contact.

[0018] According to the second embodiment, the connecting section, which is stamped in step c, is designed as a screw-on section for a high-voltage cable. In other words, the second connecting section is designed to be electrically and mechanically connectable to a high-voltage cable.

[0019] Thus, one of the connection sections at a first end region of the high-voltage contact is preferably designed as a component connection, and the opposite second end region of the high-voltage contact is designed as a screw-on section. At least either the screw-on section and / or the component connection is produced by compressing the end region using step b. and stamping it using step c. For example, both the screw-on section and the component connection are produced in this way; preferably, only the screw-on section is produced in this way.

[0020] It is further proposed in an advantageous embodiment of the manufacturing method that the wire blank is bent in an intermediate step before step c.

[0021] Accordingly, in an intermediate step before step c., preferably between step b. and step c., the wire blank is bent about one or more bending axes. Preferably, at least one, and preferably all, of the bending axes in this step are arranged parallel to the stamping direction along which the wire blank is bent in step c. For example, the wire blank is bent about two such bending axes in opposite directions.

[0022] After stamping, the wire blank can no longer be easily bent transversely to the stamping direction due to its width transverse to the stamping direction, at least in the stamped sections.

[0023] According to this embodiment, a particularly free design for the high-voltage contact can be represented.

[0024] It is further proposed in an advantageous embodiment of the manufacturing method that the connection section is designed as a screw-on section, and For this purpose, in a step d. a hole is made, preferably punched, in the screw-on section.

[0025] Accordingly, the connecting section, which is formed at the end region compressed in step b., is designed as a screw-on section.

[0026] To form the connection section, a hole is made, preferably by punching, in the screw-on section in step d. Step d. is preferably performed after or simultaneously with step c. For example, the corresponding end area is embossed in a single work step, and the hole is created in the process.

[0027] Preferably, the hole is designed as a through hole for a screw or a rivet.

[0028] It is further proposed in an advantageous embodiment of the manufacturing method that in step c. the wire blank is embossed to a uniform thickness or in sections to different thicknesses along the embossing direction.

[0029] Accordingly, not only the connecting section is embossed, but also other sections of the wire blank, preferably the entire wire blank in step c. The wire blank is embossed to a uniform thickness along the embossing direction, or several sections, into which the wire blank is divided along its longitudinal direction, are embossed to different thicknesses.

[0030] It is further proposed in an advantageous embodiment of the manufacturing method that the wire blank is bent in a step e. about a bending axis transversely, preferably orthogonally, to the embossing direction.

[0031] Accordingly, in step e., the wire blank is bent around a bending axis that is arranged transversely, preferably orthogonally, to the stamping direction. Step e. is performed after step c., preferably after step d.

[0032] In one embodiment, in a further step f, the high-voltage contact is mounted on a high-voltage component. For example, the high-voltage contact is welded to and / or clamped into a conductor end or a collective contact, which is electrically connectable or connected to a plurality of high-voltage conductors, of the high-voltage component. Preferably, several high-voltage contacts are mounted on a high-voltage component, for example, one per phase.

[0033] In a further optional step g., the high-voltage contacts are encapsulated in plastic, preferably by injection molding. The high-voltage contacts are thus preferably stably and securely positioned relative to one another, insulated, and attached to the high-voltage component. The high-voltage contacts are preferably encapsulated in such a way that the screw-on sections protrude from the plastic, for example, on a side facing away from the high-voltage component.

[0034] According to a further aspect, a high-voltage contact for an electrical connection of a high-voltage component is proposed, comprising at least the following components: - a first connection section for attaching the high-voltage contact to a high-voltage component; - a second connection section for attaching a high-voltage cable; and - a line section between the connecting sections, wherein the high-voltage contact has a first width along a first direction, transverse to the longitudinal direction of the high-voltage contact, and has a thickness along a second direction, transverse to the first direction and the longitudinal direction, wherein a first width of at least one of the connection sections transversely to a longitudinal direction of the high-voltage contact is wider than a second width of the line section, and the first width is wider than the thickness, at least in this connection section.

[0035] A high-voltage contact is proposed here. The high-voltage contact is designed for the electrical connection of a high-voltage component. In other words, the high-voltage contact is designed to electrically connect the high-voltage component, for example, to a high-voltage electrical cable. The high-voltage contact is preferably a formed copper wire.

[0036] The high-voltage contact has at least a first connection section, a second connection section and a line section.

[0037] The first connection section is designed to attach the high-voltage contact to a conductor end of the high-voltage component or to a common contact that is electrically connected to a plurality of such conductor ends. For example, such a high-voltage component is a converter, such as an AC / DC converter or a DC / DC converter, or an electric drive motor. The first connection section is designed to electrically and mechanically connect the conductor end or the common contact of the high-voltage component to the high-voltage contact.

[0038] The second connection section is designed to attach the high-voltage contact to a high-voltage cable. Such a high-voltage cable is configured to conduct a current or electrical power to or from the high-voltage component. The second connection section is designed to electrically and mechanically connect the high-voltage cable to the high-voltage contact.

[0039] The line section is arranged between the first connection section and the second connection section and connects them to each other in an electrically conductive manner.

[0040] A first direction is defined, which is arranged transversely, preferably orthogonally, to the longitudinal direction of the high-voltage contact. Furthermore, a second direction is defined, which is arranged transversely, preferably orthogonally, to the longitudinal direction and the first direction. The extension of the high-voltage contact is defined as the width along the first direction, and as the thickness along the second direction. The second direction thus corresponds, if appropriate, to the previously explained embossing direction.

[0041] In this case, a first width of at least one of the connection sections transverse to the longitudinal direction of the high-voltage contact is wider than a second width of the line section. In other words, the high-voltage contact is widened at the connection section in the first direction. The thickness of the high-voltage contact is preferably substantially constant along the longitudinal direction. For example, the thickness decreases toward the sides that delimit the high-voltage contact along the first direction. For example, the sides or edges that delimit the high-voltage contact along the first direction are rounded.

[0042] Preferably, the high-voltage contact is embossed. Accordingly, the lateral edges of the high-voltage contact are not sharp, as with a stamped conductor, but rather have a radius or are rounded.

[0043] The width is wider, at least in this connection section, which is wider than the line section, i.e., greater than the thickness in this connection section. For example, the width along the entire high-voltage contact is always greater than the thickness at the respective point along the longitudinal direction. In other words, the cross-section of the high-voltage contact is not round, but rather oval, for example. The shape of the cross-section is preferably obtained by embossing the high-voltage contact.

[0044] According to a further aspect, a high-voltage contact is proposed, wherein the high-voltage contact, preferably according to an embodiment according to the above description, is produced by means of a production method according to an embodiment according to the above description.

[0045] It is further proposed in an advantageous embodiment of the high-voltage contact that at least one of the connection sections is a component connection which is designed to be electrically conductively connected to the high-voltage component, and / or at least one of the connection sections is a screw-on section which has a hole.

[0046] Preferably, at least, particularly preferably exclusively, the screw-on section is formed with a greater width than the line section according to the above description. Thus, for example, at least, preferably exclusively, the end region of the wire blank is compressed according to step b., which forms the screw-on section when the high-voltage contact is manufactured using the method described above.

[0047] Thus, the high-voltage contact has sufficient material along the longitudinal direction of the high-voltage contact, even at the level of the hole, to safely transmit the electrical power of the high-voltage component.

[0048] Also disclosed here is a busbar comprising a common contact and a high-voltage contact according to the above description. The common contact is designed to provide electrical contact with a plurality of conductor ends of a high-voltage component, for example, the conductor ends of stator windings of an electric drive machine. For example, the common contact is a busbar arranged in sections in the circumferential direction on an end face of the stator. For example, such a busbar has a connection pin designed to engage a welding lug of the high-voltage contact in order to ensure a secure and defined welded connection between the busbar and the welding lug.

[0049] According to a further aspect, an electric drive machine for a motor vehicle is proposed, comprising at least the following components: - a stator with stator windings; - a rotor; and - a high-voltage contact according to an embodiment as described above, wherein the stator windings each have a conductor end, which is each connected to a connection section of the high-voltage contact.

[0050] An electric drive unit for a motor vehicle is proposed here. The electric drive unit is preferably a permanent magnet electric motor.

[0051] Such an electric drive machine comprises at least a stator, a rotor and a high-voltage contact.

[0052] The stator preferably comprises a plurality of stator windings, which can be electrically energized to form a stator magnetic field. The stator preferably has three phases in which the stator windings can be energized.

[0053] The rotor comprises, for example, a plurality of permanent magnets with a rotor magnetic field. Through interaction between the rotor magnetic field and the stator magnetic field, a torque can be provided based on a current in the stator windings and / or a current in the stator windings can be provided based on a torque.

[0054] The high-voltage contacts are preferably arranged at the conductor ends of the stator windings. The high-voltage contacts are preferably part of a busbar, which further comprises a common contact. In such an embodiment, the conductor ends are electrically conductively attached to the common contact. The high-voltage contact is electrically conductively attached to the busbar, preferably welded to it by means of the component connection. The high-voltage contacts are designed as described above.

[0055] Preferably, the high-voltage contacts on the stator are encapsulated, for example by means of a plastic, preferably by injection molding.

[0056] The stator preferably has a corresponding conductor end for each phase, i.e., preferably three conductor ends. Thus, preferably three high-voltage contacts are arranged on the stator to connect the stator to three phases of a high-voltage line.

[0057] The correspondingly other connection section of the high-voltage contact, preferably the screw-on section, is thus arranged on the side facing away from the electric drive motor. This connection section forms a fastening option for an electrical cable, preferably a hole for a screw connection.

[0058] The invention described above is explained in detail below against the relevant technical background with reference to the accompanying drawings, which show preferred embodiments. The invention is in no way limited by the purely schematic drawings, whereby it should be noted that the drawings are not to scale and are not suitable for defining proportions. It is shown in Fig. 1: a wire blank in a perspective view; Fig. 2: a wire blank according to Fig. 1 with a compressed end region in a perspective view; Fig. 3: a wire blank according to Fig. 1 with bends in a perspective view; Fig. 4: a stamped wire blank according to Fig. 1 in a perspective view; Fig. 5: a stamped wire blank according to Fig. 1 with a hole in a perspective view; Fig. 6: a high-voltage contact made from a wire blank according to Fig. 1 in a perspective view; Fig. 7: High-voltage contacts after Fig. 6 in a casing in a perspective view; and Fig. 8: a stator of an electric drive machine with high-voltage contacts according to Fig. 6 in a perspective view.

[0059] In Fig. 1 shows a wire blank 3 in a perspective view. For example, the wire blank 3 was cut from a longer wire. The wire blank 3 is preferably made of copper or a copper alloy. Viewed along the longitudinal direction 21, the wire blank 3 has a round cross-section. In a manufacturing method for a high-voltage contact 1 (see Fig. 6), such a wire blank 3 is provided in a first step a.

[0060] In Fig. 2 is a wire blank 3 according to Fig. 1 with a compressed end region 4 in a perspective view. The wire blank 3 has the compressed end region 4 on one side. The wire blank 3 was compared to the illustration in Fig. 1 is thus compressed in the end region 4 in a step b. The intermediate product shown thus has a greater mass, i.e., more material, in the compressed end region 4 than in the remaining wire blank 3.

[0061] In Fig. 3 is a wire blank 3 according to Fig. 1 with bends in a perspective view. Compared to the illustration in Fig. 2, the wire blank 3 was bent twice. The bending axes around which the wire blank 3 was bent are arranged orthogonally to a stamping direction 9, along which the wire blank 3 is subsequently stamped (see Fig. 4).

[0062] In Fig. 4 is a stamped wire blank 3 according to Fig. 1 in a perspective view. The wire blank 3 is shown in Fig. 3. The wire blank 3 was thus compressed along the embossing direction 9. The resulting intermediate product has a width 16, 17 along a first direction 19, orthogonal to the longitudinal direction 21 of the high-voltage contact 1. A first width 16 in the previously compressed end region 4 is wider than a second width 17 in the remaining intermediate product. The thickness 15 along the embossing direction 9, also referred to here as the second direction 20, is smaller than the width 16, 17 along the entire longitudinal direction 21 of the high-voltage contact 1 and is essentially constant along the entire longitudinal direction 21.

[0063] The embossing step is also referred to here as step c of the manufacturing process of the high-voltage contact 1.

[0064] In Fig. 5 is a stamped wire blank 3 according to Fig. 1 with a hole 14 in a perspective view. Compared to the illustration according to Fig. 4, a hole 14, which was punched in step d., is now arranged in the compressed end region 4. The hole 14 provides a connection point for a high-voltage electrical cable. For example, a high-voltage electrical cable can be connected using a screw threaded through the hole 14.

[0065] As already explained, the compressed end region 4 has a larger first width 16 than the rest of the intermediate product. Thus, there is sufficient material around the hole 14 to reliably transmit the electrical power in a high-voltage system, for example, in a motor vehicle.

[0066] Furthermore, the illustrated intermediate product has a first connection section 7 at a first end region 5, which is opposite the previously compressed end region 4. This connection section 7 is a component connection 10 and, as shown, has a welding eyelet 26. The welding eyelet 26 is preferably also punched out. The welding eyelet 26 is designed to weld a conductor end 11 of a high-voltage component 12 to it (see Fig. 8).

[0067] The second connection section 8 is arranged in a second end region, which corresponds to the previously compressed end region 4. The second connection section 8 is a screw-on section 13, to which, as explained, a high-voltage electrical cable can be fastened by means of a screw.

[0068] In Fig. 6 is a high-voltage contact 1 made of a wire blank 3 according to Fig. 1 in a perspective view. Between the representation in Fig. 5 and the representation in Fig. 6, a purely optional step, also referred to here as step e., of bending takes place. In other words, in an alternative embodiment, for example, the Fig. 5 shown high-voltage contact 1 is the final product.

[0069] Opposite Fig. 5, the wire blank 3 was then bent around additional bending axes. In this case, the bending axes are arranged orthogonally to the embossing direction 9 and substantially parallel to the first direction 19. As shown, the high-voltage contact 1 is bent to the right adjacent to the screw-on section 13, bent to the left along the longitudinal direction 21 in the direction of the component connection 10, and bent again to the left adjacent to the component connection 10. This results in the illustrated shape of the high-voltage contact 1, in which the screw-on section 13 is arranged parallel to a main section of the line section 18 and is connected to it via a section of the line section 18 arranged obliquely or diagonally thereto. The component connection 10 is in turn arranged orthogonally to the main section or the screw-on section 13 via a 90° bend.

[0070] In Fig. 7 is high-voltage contacts 1 after Fig. 6 is shown in a perspective view within a casing 27. As shown, three such high-voltage contacts 1 are arranged within the casing 27 shown.

[0071] The expert will understand that not all three contacts are exactly as Fig. 6 are formed, but the bends of the high-voltage contact 1 are formed in order to connect the illustrated screw-on sections 13 at the second end regions 6 with the illustrated component connections 10 at the first end regions 5.

[0072] The sheath 27 is preferably made of plastic. For example, the high-voltage contacts 1 are injection-molded into the sheath 27. As shown, the sheath 27 has two flange holes 28, by means of which the sheath 27 can be attached to the high-voltage component 12.

[0073] In Fig. 8 is a stator 23 of an electric drive machine 22 with high-voltage contacts 1 according to Fig. 6 in a perspective view. The high-voltage contacts 1 are according to Fig. 7 arranged in a casing 27. A plurality of high-voltage contacts 1 were thus mounted on the electric drive motor 22 in one step f.

[0074] The stator 23 has stator windings 24. The stator windings 24 are three-phase. The stator 23 has a plurality of conductor ends 11 for each phase. The conductor ends 11 of a phase converge in a common contact 25 of a busbar 2. The common contact 25 is welded to the high-voltage contact 1 of the corresponding busbar 2 or the corresponding phase by means of the component connection 10 and is thus electrically connected thereto.

[0075] The screw-on sections 13 of the high-voltage contacts 1 point away from the high-voltage component 12, i.e. here the stator 23 of the electric drive motor 22, so that an electrical high-voltage cable (not shown here) can be connected to it.

[0076] A rotor (not shown here for clarity) is arranged in the stator 23. The rotor has permanent magnets that generate a rotor magnetic field. When the stator windings 24 are energized via the high-voltage line, a stator magnetic field is generated, which interacts with the rotor magnetic field to generate torque.

[0077] The high-voltage contacts 1 are overmolded with the plastic sheath 27 and thus secured to each other and to the stator 23. For this purpose, the sheath 27 is screwed to the stator 23 via the flange holes 28.

[0078] In an alternative embodiment (not shown here), the high-voltage component 12 on which the high-voltage contacts 1 are arranged is, for example, a converter, preferably of a high-voltage system of a motor vehicle, for example a DC / DC converter and / or an AC / DC converter.

[0079] With the manufacturing process proposed here, a particularly cost-effective and safe high-voltage contact can be produced by compressing an end region. List of reference symbols 1 high-voltage contact 2 bus bars 3 Wire blank 4 compressed end area 5 first end area (component connection) 6 second end section (screw-on section) 7 first connection section 8 second connection section 9 Embossing direction 10 Component connection 11 Ladder end 12 high-voltage components 13 Screw-on section 14 holes 15 thickness 16 first width 17 second width 18 line sections 19 first direction 20 second direction 21 Longitudinal direction 22 electric drive motor 23 Stator 24 stator winding 25 Collective contact 26 Weld-on eyelet 27 Sheathing 28 flange hole

Claims

[1] Manufacturing method for an electrical high-voltage contact (1), comprising the following steps: a. Providing a wire blank (3); b. upsetting the wire blank (3) in an end region (4); c. Embossing at least the compressed end region (4) of the wire blank (3) to form a connecting section (7, 8) in an embossing direction (9). [2] Manufacturing method according to claim 1, wherein the connection section (7) on a first end region (5) of the high-voltage contact (1) is designed as a component connection (10) for an electrical conductor end (11) of a high-voltage component (12), and / or the connection section (8) on the opposite second end region (6) of the high-voltage contact (1) is designed as a screw-on section (13) for a high-voltage line. [3] Manufacturing method according to claim 1 or claim 2, wherein the wire blank (3) is bent in an intermediate step before step c. [4] Manufacturing method according to one of the preceding claims, wherein the connecting section (8) is designed as a screw-on section (13), and for this purpose in a step d. a hole (14) is introduced, preferably punched, into the screw-on section (13). [5] Manufacturing method according to one of the preceding claims, wherein in step c. the wire blank (3) is embossed to a uniform thickness (15) or in sections to different thicknesses (15) along the embossing direction (9). [6] Manufacturing method according to one of the preceding claims, wherein the wire blank (3) is bent in a step e. about a bending axis transversely, preferably orthogonally, to the embossing direction (9). [7] High-voltage contact (1) for an electrical connection of a High-voltage component (12) comprising at least the following components: - a first connection section (7) for fastening the high-voltage contact (1) to a high-voltage component (12); - a second connection section (8) for attaching a high-voltage line; and - a line section (18) between the connection sections (7, 8), wherein the high-voltage contact (1) has a first width (16) along a first direction (19), transverse to the longitudinal direction (21) of the high-voltage contact (1), and has a thickness (15) along a second direction (20), transverse to the first direction (19) and the longitudinal direction (21), wherein a first width (16) of at least one of the connection sections (7, 8) transversely to a longitudinal direction (21) of the high-voltage contact (1) is wider than a second width (17) of the line section (18), and the first width (16) is wider than the thickness (15) at least in this connection section (7,8). [8] High-voltage contact (1), wherein the high-voltage contact (1), preferably according to claim 7, is manufactured by means of a manufacturing method according to one of claim 1 to claim 6. [9] High-voltage contact (1) according to claim 8 or claim 7, wherein at least one of the connection sections (7) is a component connection (10) which is designed to be electrically conductively connected to the high-voltage component (12), and / or at least one of the connection sections (8) is a screw-on section (13) which has a hole (14). [10] Electric drive machine (22) for a motor vehicle, comprising at least the following components: - a stator (23) with stator windings (24); - a rotor; and - a high-voltage contact (1) according to one of claim 7 to claim 9, wherein the stator windings (24) each have a conductor end (11) which are each connected to a connection section (7, 8) of the high-voltage contact (1).

Images