High current connection clamp screw device and electrical high current connector and high current line connector

Abstract

The invention relates to a mechanical high current connection clamping screw device (12) for an electrical high current connector (10), in particular for the automotive sector, having a clamping screw (200) which extends in the axial direction (Ar) of the clamping screw device (12) and is divided into a rotatable screw head (210), a screwable screw body (220) and preferably a screw foot (230), wherein the screw head (210) comprises on the outside an electrical insulation (212) which comprises an electromagnetic shield (214) and / or a seal (216).

Description

Technical Field

[0001] This invention relates to a mechanical high-current connection clamping screw device for electrical high-current connectors, particularly for the automotive industry. Furthermore, this invention relates to electrical high-current connectors, electrical high-current line connectors, and electrical entities for high-current lines made of copper or aluminum, respectively, for the automotive industry. Background Technology

[0002] In electrical fields (electrical, electrical engineering, power engineering, etc.) other than ground-based power engineering and the like, a large number of electrical line connectors are known for transmitting current and voltage in medium or high current or voltage ranges. In such cases, line connectors, for example, for power and / or energy distribution in warm, potentially hot, contaminated, humid, and / or chemically corrosive environments, ensure problem-free transmission of electrical energy for short periods and / or permanently. Due to their wide range of applications, a large number of such line connectors are known in both non-automotive and automotive sectors.

[0003] Such high-current line connectors can be mounted on / in electrical entities such as rechargeable batteries or rechargeable battery modules, or (traction) batteries or battery modules; inverters; switching device assemblies, etc. High fuel costs and efforts to reduce environmental impact have made hybrid or electric vehicles necessary, for example, in the automotive sector. One aspect of these vehicles is handling high charging and operating currents and / or voltages, requiring the corresponding design of components in hybrid or electric vehicles. This involves, for example, high-current / high-voltage lines in the line connectors (e.g., stranded wires, conductor bars, busbars, etc., made of copper or preferably aluminum) and contact devices (e.g., terminal blocks, flat contacts, busbars, etc., made of aluminum or preferably copper).

[0004] To establish electrical contact between an electrical entity and a high-current line connector, an electromechanical screw contact connection can be used, which also meets stringent requirements. With this high-current screw contact connection, the mechanical path can be functionally separated from the electrical path. The mechanical path is used to transmit the mechanical tensile stress of the screw joint, especially steel-to-steel screw joints, while the electrical path serves as the low-resistance electrical contact connection for the high-current screw contact connection, particularly copper-to-copper connections.

[0005] As a result, a robust and easily maneuverable high-current screw contact connection is provided. Furthermore, this high-current screw contact connection is easy to disassemble (diagnose, recycle) and is also shockproof. This high-current screw contact connection can be flexibly used in a variety of ways for contacting battery modules and other connection points in various terminal panels for power architectures. There is a continuous effort to improve high-current line connectors, particularly to design them to be more efficient and, in the process, more cost-effective. Therefore, the object of this invention is to provide an improved high-current screw contact connection. Summary of the Invention

[0006] According to the independent claims, the object of the invention is achieved by mechanical high-current connection clamping screw devices for electrical high-current connectors used in the automotive field, electrical high-current connectors for high-current lines made of copper or aluminum, electrical high-current line connectors, and electrical entities, respectively. Advantageous developments, additional features, and / or advantages of the invention may be obtained from the dependent claims and the following description.

[0007] Within the scope of this invention, depending on the application, it is inevitable that screw-connectable "holes" in the structural layers of electrical high-current connectors for high-current lines may prove problematic. According to the invention, this is solved by a mechanical (high-current connection) clamping screw device according to the invention, i.e., in addition to the final hole.

[0008] The clamping screw device according to the invention includes a clamping screw extending in the axial direction of the clamping screw device and divided into a rotatable screw head, a screw body, and preferably a screw foot, wherein the screw head includes electrical insulation on its outer side, which includes electromagnetic shielding and / or a seal. In this case, the electrical insulation may substantially completely or completely surround the screw head in the circumferential direction of the clamping screw device.

[0009] According to the invention, these "holes" are "blocked," and these "holes" are in particular the cause of undesirable material transfer and / or shielding interruption. This is achieved according to the invention, especially without requiring additional production steps or additional individual components, i.e., without additional assembly steps or the assembly of additional elements. According to the invention, it is sufficient to design an existing clamping screw device. In this case, the clamping screw device can be manufactured in a single, automatable production step, such as in an injection molding machine (for which only electromagnetic shielding may be required as an additional insertion component). In this case, a housing adapted to a high-current connector may be required, but this can also be achieved without additional production steps and additional components.

[0010] The screw head can be embedded in electrical insulation. In this case, the electrical insulation can extend substantially or entirely in the axial direction of the screw head. The electrical insulation may include a circumferential surface on which the electromagnetic shield is disposed directly radially outward, and / or a seal is disposed directly or indirectly radially outward on the circumferential surface. In this case, the circumferential surface extending further in the axial direction can be designed as oval, elliptical, or circular on the electrical insulation. The electrical insulation can be injection molded onto the screw head on the outside, into the electromagnetic shield on the inside, or between the screw head and the electromagnetic shield.

[0011] The electrical insulation may include an end face on which the electromagnetic shield is disposed on the outer side. A seal may be disposed radially outward in the circumferential direction on the circumferential surface of the electromagnetic shield. Furthermore, the screw head and / or the electromagnetic shield may include an outer or inner contour for a screwdriver. The screw head may be fixedly located within the electrical insulation. Additionally, the electrical insulation may be fixedly located within the electromagnetic shield. Furthermore, the seal may be fixedly located on the electrical insulation or fixedly located on the electromagnetic shield.

[0012] The electromagnetic shielding can be in the form of a can that completely covers the screw head. Preferably, the electromagnetic shielding is in the form of a protective cover. The electromagnetic shielding can be in the form of a deep-drawn electromagnetic shield. The seal can be in the form of an annular seal or a sleeve seal having at least one sealing lip. Preferably, the seal is in the form of an elastomeric seal. The seal can be injection molded onto the electrical insulation or electromagnetic shielding. Preferably, the clamping screw is made of metal or a metal alloy, particularly steel. Furthermore, the electrical insulation is preferably made of plastic.

[0013] The screw head may include jaws through which the electrical high-current contact of the high-current connector can be mechanically clamped. In this case, the force transmission from the screw head to the contact is carried out through the jaws, which are typically in the form of a toroidal surface. The screw body may include a substantially smooth screw shank and a threaded shank axially abutting the screw shank. In this case, the threaded shank may include external threads (preferably) or internal threads.

[0014] The threaded rod or screw foot may include a touch guard protruding away from the threaded rod. In this case, the screw foot may be in the form of a free longitudinal end of the threaded rod and includes, for example, a recess into which the touch guard protruding away from the threaded rod and screw foot is inserted. Preferably, the touch guard may be injection molded onto the threaded rod and / or screw foot, or injection molded around the screw foot. The touch guard is, of course, preferably formed of plastic.

[0015] In one embodiment: the screw head may (only) include an outer contour (e.g., an outer n-side contour or the like), possibly an electromagnetic shield may be arranged at the front end and radially outward on the electrical insulation of the outer contour, the electrical insulation may include a radially outer circumferential wall (form), the circumferential wall may be spaced apart relative to the outer contour and possibly relative to the electromagnetic shield of the outer contour, possibly the electromagnetic shield may cover the circumferential wall at least on one or both sides (a relatively large area), and / or possibly the seal may be radially outward arranged on the circumferential wall or radially outward arranged on the electromagnetic shield.

[0016] In one embodiment: the screw head may include an inner contour (e.g., an inner n-side contour or the like), possibly an electromagnetic shield may be arranged on the front end and radially inward on the electrical insulation of the inner contour, the electrical insulation may include a radially outer circumferential wall (side wall) that may be spaced relative to the inner contour and possibly relative to the electromagnetic shield of the inner contour, possibly the electromagnetic shield may at least partially cover the circumferential wall, and / or possibly the seal may be arranged radially outward on the circumferential wall or on the electromagnetic shield.

[0017] The high-current connector according to the invention includes a mechanical (high-current connection) clamping screw device and an electrical (high-current) contact device for electrical contact with an electrical (high-current) mating contact device, and the contact device can be mechanically clamped onto the mating contact device by the clamping screw device, wherein the mechanical clamping screw device of the high-current connector is designed according to the invention.

[0018] In particular, high-current (plug-type) connectors can be used in hybrid or electric vehicles, i.e., motor vehicles with electric traction engines, for transmitting electrical energy. In this case, high-current connectors are especially useful for transmitting energy to and from the vehicle's (traction) battery (charging, charging operation mode, energy recovery operation mode) and / or transmitting energy from the battery ((electric) driving operation mode, energy recovery operation mode). The contact device can preferably be in the form of a busbar.

[0019] The contact device may include an electrical contact portion for high-current lines, a mechanical clamping portion, and an electrical contact portion having a contact surface. In this case, the contact device may be designed in particular to be inclined, wherein the contact portion and the clamping portion for high-current lines are integrally abutted against each other, primarily or substantially in one direction (possibly including a step), wherein the contact portion protrudes substantially perpendicular to the contact surface away from the clamping portion. In this case, the contact portion is preferably designed as a substantially hollow cylinder, wherein a clamping screw device extends through the contact portion. The free end side of this (as thick as possible) hollow cylinder forms the contact surface.

[0020] High-current connectors may include electromagnetic shielding that can be electrically contacted by the electromagnetic shielding of the clamping screw assembly. In this case, electrical contact can be formed with the electromagnetic shielding of the high-current connector, particularly through the substantially complete or complete circumference of the electromagnetic shielding of the clamping screw assembly. Electrical contact between the clamping screw and its shield, and / or between the shielding of the clamping screw assembly and the shielding of the high-current connector, can also be created by additional elements such as EMC seals. Furthermore, the high-current connector may include a housing having a through recess for inserting the clamping screw assembly. The electrically insulating housing is, of course, preferably made of plastic.

[0021] The electromagnetic shielding of a high-current connector can be arranged on the electrical insulating sheath (housing) of the contact device. The electrical insulating sheath is preferably made of plastic. The electrical insulating sheath can include two sheath portions, each including an electromagnetic shielding portion on its outer side. In this case, the sheath portions can be in the form of an upper sheath portion and a lower sheath portion, and the shielding portions can similarly be in the form of an upper shielding portion and a lower shielding portion. The two sheath portions can be latched together, and the two shielding portions are in conductive contact with each other.

[0022] The seal of the clamping screw device can or may make sealing contact with the inside of the through recess. Alternatively or additionally, the seal can or may make sealing contact with both the inside of the through recess and the outside of the clamping screw device. The clamping screw device can be accommodated in the through recess of the housing in a loss-proof manner. The housing may include two housing portions, with a contact device having an electrically insulating cladding and electromagnetic shielding housed between the two housing portions. In this case, the housing portions may be in the form of two housing side portions, wherein the housing portions or housing side portions are interlocked with each other. The through recess in the housing can be covered by a protective cap, wherein the protective cap may be in the form of a protective cap slide member with a bearing mounted on the housing.

[0023] High-current connectors can be designed for constant currents of at least approximately: 100A, 200A, 300A, 400A, 750A, 1kA, or 1.25kA. In this case, the high-current connector can be further configured to withstand significantly higher short-term currents in each case (e.g., dynamic drive modes, approximately: +175%, +200%, +250%, +300%, +350%, +400%). High-current connectors can also be designed for voltages of at least approximately: 200V, 300V, 400V, 500V, 600V, 750V, 1kV, 1.25kV, 1.5kV, 1.75kV, or 2kV. In this case, the high-current connector can be further configured to withstand significantly higher short-term voltages in each case (e.g., dynamic drive mode, approximately: +175%, +200%, +250%, +300%, +350%, +400%, +500%).

[0024] For example, high-current connectors conforming to LV214 or similar standards can meet vibration requirements of this level or severity: 2, 3, and / or 4. In particular, high-current connectors can meet vibration requirements of this level or severity: 3. Furthermore, high-current connectors conforming to LV214 or similar standards may not meet vibration requirements of this level or severity: 4 and / or higher. High-current connectors are preferably designed for operating temperatures from approximately –40°C to approximately 80°C, 100°C, 120°C, 140°C, 150°C, 160°C, 170°C, or 180°C.

[0025] The (high-current) line connector according to the invention comprises at least one mechanical (high-current connection) clamping screw device according to the invention and / or at least one electrical high-current connector according to the invention. In this case, a single longitudinal end or both longitudinal ends of the high-current line connection or high-current line may include the high-current connector according to the invention. Furthermore, in a first case, the second longitudinal end may include another high-current connector, such as a socket for an inlet. The high-current connector or line connector is a flexible, compact, robust, and touch-safe solution for contacting and connecting battery modules and other high-current connection points besides batteries.

[0026] The contact device may include a high-current line in its contact portion. The electromagnetic connection between the contact portion and the high-current line is preferably substantially integral. Alternatively, the contact portion or contact device may be integrally formed with the high-current line. The electromagnetic shielding of the high-current connector may shield the connection area between the contact portion of the contact device and the electrical high-current line. Furthermore, the line connector may include exactly two electrical high-current connectors according to the invention, wherein more than two connectors may also be used.

[0027] High-current lines can be embedded within electromagnetically shielded high-current line connections. Furthermore, the electromagnetic shield of the high-current connector can make conductive contact with the electromagnetic shield of the high-current lines. Additionally, the external electrical insulation of the high-current lines can be sealed relative to the housing and secured by a latching device.

[0028] The entities according to the invention include the mechanical (high-current connection) clamping screw device according to the invention, the electrical high-current connector according to the invention, and / or the electrical (high-current) line connector according to the invention. In this case, the entities can be, for example, power electronic units, power electronic devices, power electronic modules, power electronic devices, power electronic systems, modules of rechargeable batteries or battery packs, rechargeable batteries or battery packs, power electronic inverters (for front-wheel drive and / or rear-wheel drive), power electronic switching device assemblies, etc. In this case, the line connector can be arranged, for example, between two such entities.

[0029] The invention will now be explained in more detail with reference to the accompanying drawings, which are not drawn to scale, based on exemplary embodiments. Parts, elements, constituent parts, units, components, and / or patterns having the same, unique, or similar configurations and / or functions are identified by the same reference numerals in the description of the drawings (see below), the list of reference numerals, the patent claims, and the drawings. Possible alternatives not explained in the description of the invention (see above) are not shown in the drawings and / or are not limiting with respect to exemplary embodiments of the invention, static and / or movement reversals, combinations, etc., or parts, patterns, units, constituent parts, elements, or portions thereof may be further derived from the list of reference numerals and / or the description of the drawings.

[0030] In the context of this invention, features (parts, elements, constituent parts, units, components, functions, variables, etc.) can be positive configurations, i.e., present, or negative configurations, i.e., absent. In this specification (description of the invention (see above), description of the drawings (see below)), list of reference numerals, patent claims, and drawings), negative features are not explicitly interpreted as features unless value is assigned to them according to the invention. That is, the invention effectively omits such features rather than being constructed using prior art.

[0031] The features of this specification may be used not only in the specified manner and / or method, but also in another manner and / or method (isolation, combination, substitution, addition, independence, omission, etc.). In particular, in the specification, list of reference symbols, patent claims, and / or drawings, features in the patent claims and / or specification may be substituted, added, or omitted based on the reference symbol and the features assigned to it, and vice versa. Furthermore, the result may explain and / or illustrate the features in the patent claims in more detail.

[0032] The described features can also be interpreted as optional features (given the prior art, which was initially largely unknown); that is, each feature can be considered optional, arbitrary, or preferred, i.e., not mandatory. Therefore, it is possible to separate features (possibly including their peripheries) from exemplary embodiments, and then those features can be transferred to a generalized inventive concept. In exemplary embodiments, no feature (negative feature) indicates that the feature is optional for the invention. Furthermore, in the case of typological terms for features, genus terms for features can also be implicitly understood (possibly further subdivided into subgenus, etc.), resulting in the possibility of generalization of features, for example, considering equivalent effects and / or equivalence. Attached Figure Description

[0033] In the accompanying drawings, which are merely illustrative:

[0034] Figure 1 A central cross-sectional perspective view of an embodiment of an electrically high-current connector according to the invention, showing an electrically high-current line connection, is shown, having been inserted with an electrically high-current mating connector.

[0035] Figure 2 and 3 A central cross-sectional perspective view of a first embodiment of the electrical clamping screw device according to the invention in an electrical high-current connector according to the invention is shown. Figure 2 ), and a central cross-sectional side view of the first embodiment of the clamping screw device ( Figure 3 ),as well as

[0036] Figure 4 and 5 A central cross-sectional perspective view of a second embodiment of the electrical clamping screw device according to the invention in an electrical high-current connector according to the invention is shown. Figure 4 ), and a central cross-sectional side view of a second embodiment of the clamping screw device ( Figure 5 ). Detailed Implementation

[0037] Traction batteries are an integral part of the powertrain electrification of hybrid or electric vehicles. These batteries consist of many individual cells, which combine to form battery modules. In charging, driving, and regeneration operating modes, all electrical energy must either flow safely into the battery or be removed from it via high-current line connections to these battery modules. Therefore, given the limited physical space, these line connections and their electrical contacts must be able to conduct a permanent current of up to 600A, and exceed that current even for minutes during high-power charging cycles, while in dynamic driving modes, they need to carry much higher currents (at least +175% to potentially over +500%) for seconds. The same applies to the voltage of these currents.

[0038] Furthermore, this high-current contact connection of the battery module provides a physical layer for battery protection (overheat protection), battery management (state of charge), battery balancing (charge balancing between battery modules), mechanical protection, and more. For this purpose, contact connections for each individual battery module are required, possessing good fatigue strength yet being removable. These contact connections not only need to be configured as an integrated system throughout the vehicle's lifespan but also need to be robust enough that vibration and temperature effects will not affect the mechanical and electrical characteristics of the contact connections to unacceptable levels during their lifespan. Additionally, these contact connections need to be touch-safe so that high currents and voltages in high-voltage systems, such as those in electrified vehicles, do not pose a danger.

[0039] The invention will now be explained in more detail with reference to exemplary embodiments of two variations of the mechanical high-current connection clamping screw device 12 (also referred to as clamping screw device (12) hereinafter and above) according to the invention; the high-current connector 10 according to the invention; and the high-current line connector 1 (also referred to as line connector (1) hereinafter and above) according to the invention.

[0040] Although the invention has been described and illustrated in more detail through preferred exemplary embodiments, the invention is not limited to the disclosed exemplary embodiments, but has a more fundamental nature. Other variations can be derived from and / or from the foregoing (description of the invention) without departing from the scope of protection of the invention. In practical terms, the invention is generally applicable to the electrical field (see foregoing). One exception is ground-based electrical engineering and the like (very high to maximum current and voltage).

[0041] The accompanying drawings illustrate only the physical parts of the subject matter necessary for understanding the invention. Names such as connector and mating connector, contact device and mating contact device, etc., are interpreted as synonyms, meaning they may be interchangeable in each case. The explanation of the invention with reference to the accompanying drawings below relates to clamping screw device 12 (see...). Figures 2 to 5 The axial direction Ar (axial), radial direction Rr (radial), and circumferential direction Ur (tangential) and their connecting mating parts, and the clamping screw device 52 (see Figure 1 ).

[0042] Figure 1 An entity 0 according to the invention is shown, which can be electrically contacted by line connectors 1:10,(20,)...;10,(20,)10;...,(20,)10. For this purpose, entity 0 includes a high-current mating connector 50, which in this case is configured as a socket 50 outside entity 0. The high-current mating connector 50 includes, in a housing 55, a preferably solid high-current mating contact device 51 (hereinafter referred to as mating contact device 51) having a mating contact portion 516. In this case, the mating contact portion 516 is designed as a substantially hollow cylinder, wherein the free end side of the (as thick as possible) (current carrying capacity) hollow cylinder forms a mating contact forming region 5160. The mating contact device 51 preferably comprises copper or aluminum.

[0043] The mating contact portion 516, particularly the mechanically mating clamping portion 514, protrudes substantially perpendicularly away from the mating contact device 51. This clamping portion 514 is preferably integrated with the mating contact portion 512 of the mating contact device 51 for high-current circuits. The clamping portion 514 and the mating contact portion 516 having a mating contact forming region 5160 include a (coaxial) through recess 513 (preferably with a constant diameter) in the mating contact device 51, in which a mechanically mating clamping screw device 52 can be accommodated. Other configurations of the mating contact device 51 can, of course, be used.

[0044] In this configuration, the clamping screw device 52 is in the form of a threaded sleeve, having a clamping screw head 610 and a clamping screw body 620, the screw head being axially adjacent to the clamping screw head and having an internal thread. An external thread can also be used in another embodiment. Preferably, an annular touch protection device 632 is arranged on the free end of the threaded body 620. The clamping screw head 610 rests on the clamping clamping portion 514 of the clamping contact device 51 via a jaw 611 opposite to the clamping contact portion 516, preventing the clamping screw device 52 from being inserted through the through recess 513 in the clamping contact device 51.

[0045] The contact surface 1160 of the contact portion 116 of the preferred solid high-current contact device 11 (hereinafter referred to as contact device 11) of the high-current connector 10 can form an electrical contact with the electrical mating contact forming area 5160. The contact portion 116 protrudes substantially vertically away from the contact device 11 by a mechanical clamping portion 114, which is preferably integrated with the contact portion 112 of the contact device 11 for the high-current line 22. The contact device 11 preferably comprises copper or aluminum. For all embodiments, the high-current line 22 can be, for example, a (rigid) conductor bar, a busbar, a (limited flexibility) stranded conductor line, etc., and preferably comprises aluminum or copper.

[0046] In this configuration, contact portion 116 is similar to mating contact portion 516, designed as a substantially hollow cylinder, wherein the free end of the (as thick as possible) (current-carrying capacity) hollow cylinder forms contact surface 1160. Clamping portion 514 and contact portion 516 having contact surface 1160 include a (coaxial) through recess 113 in contact device 11, in which mechanical clamping screw device 12 can be accommodated. In this configuration, through recess 113 can be designed as stepped, wherein, for centering purposes of clamping screw device 12 (screw body 220, see below), through recess 113 has a smaller radius in clamping portion 114 than in contact portion 116. Other configurations of contact device 11 can, of course, be used. An embodiment of clamping screw device 12 according to the invention will be referred to below. Figures 2 to 5 To provide a more detailed explanation.

[0047] In the case of the line connector 1 to be used, the high-current line 22 of the high-current line connection 20 is preferably electrically connected to the contact portion 112 of the contact device 11 of the high-current connector 10, wherein the high-current line connection 20 preferably includes an electromagnetic shield 24, which is arranged between the two electrically insulating layers of the high-current line connection 20 (see...). Figure 1 ).

[0048] The line connector 1 according to the invention includes at least one high-current connector 10 according to the invention, which has a clamping screw device 12 according to an embodiment of the invention. Furthermore, in addition to one high-current connector 10 according to the invention, the line connector 1 according to the invention may include a second high-current connector 10 designed according to the invention [10,(20,)10;...] or not according to the invention [10,(20,)...;...,(20,)10]. In this case, of course, a different high-current line connection 20 than that shown may also be used.

[0049] The contact device 11 is preferably housed together with the high-current line 22 (preferably integrally fixed to it by material) in the electrical insulation sheath 13. In this case, preferably, the transition region to the high-current line 22 and therefore the longitudinal end of the high-current line 22 are also housed in the insulation sheath 13. The insulation sheath 13 may include two sheath portions 131, 132, particularly an upper sheath portion 131 and a lower sheath portion 132.

[0050] Preferably, the electromagnetic shield 14 of the high-current connector 10 is disposed outside the electrical insulation cladding 13, wherein the electromagnetic shield 14 is in electrical contact with the electromagnetic shield 24 of the high-current line 22. Furthermore, when the high-current connector 10 and the high-current mating connector 50 are inserted together, electrical contact is formed between the electromagnetic shield of the high-current mating connector 50 and the electromagnetic shield 14 of the high-current connector 10. The electromagnetic shield 14 may include two shielding portions 141 and 142, particularly an upper shielding portion 141 and a lower shielding portion 142.

[0051] The stack includes a contact device 11, a longitudinal end of a high-current line 22, its electrical insulation sheath 13, and its electromagnetic shield 14, and is preferably housed in a housing 15. In a region of the clamping portion 114 of the contact device 11, the housing 15 includes a through recess 153 in which a clamping screw device 12 is preferably housed in a loss-proof manner (loss-proof device 1532, for example, in the form of a cap having an access opening for a tool).

[0052] The inner side 1530 of the through recess 153 can be in the form of a sealing surface 1530 of a seal 216 for clamping the screw assembly 12. Alternatively or additionally, this can be designed in reverse, i.e., the through recess 153 includes a seal for clamping the screw assembly 12 on its inner side. The through recess 153 can be covered by a protective cap 154. In this case, the protective cap 154 ​​can be in the form of a protective cap slider 154. Of course, another protective cap 154 ​​can also be used, such as a foldable protective cap, a detachable protective cap, etc.

[0053] Reference Figures 2 to 5 ,in particular Figure 3 and Figure 5The clamping screw device 12 and the mating clamping screw device 52 are screwed together to mechanically, permanently, and securely clamp the contact surface 1160 of the contact portion 116 of the contact device 11 (responsible for: clamping screw device 12) onto the mating contact forming area 5160 of the mating contact portion 516 of the mating contact device 51 (responsible for: mating clamping screw device 52) for transmitting high current and voltage. For this purpose, the clamping screw device 12 and the mating clamping screw device 52 are screwed together, wherein the clamping screw device 12 (external thread) is preferably screwed into the mating clamping screw device 52 (internal thread). This can, of course, be kinematically designed in the opposite manner.

[0054] In this configuration, starting with the clamping screw device 12 (jaw 211, see below), which is fixedly resting on the clamping portion 114 of the contact device 11 on the outside, and starting with the mating clamping screw device 52, which is fixedly resting on the mating clamping portion 514 of the mating contact device 51 (jaw 611), the contact portion 116 and the mating contact portion 516 overlap each other and are fixedly held against each other. In this configuration, the screw composite formed by the clamping screw device 12 and the mating clamping screw device 52 extends through the through recesses 113, 513 in the contact portion 116 and the mating contact portion 516.

[0055] See Figure 3 and Figure 5 A corresponding embodiment of the clamping screw device 12 includes a clamping screw 200 in the form of a partially threaded screw 200 (bolt 200), which integrally includes a screw head 210, a screw body 220, and preferably a particularly prominent screw foot 230 arranged sequentially in the axial direction Ar. In this case, the screw foot 230 is in the form of a protrusion of the screw body 220, on which a contact protection device 232 is provided. Alternatively, the screw foot 230 can be integrated into the screw body 220, for example, in the form of a recess, and then the contact protection device 232 can be fitted therein, which then resides in the screw foot 230 and protrudes away from the screw body 220.

[0056] In this configuration, the screw body 220 includes a generally smooth screw shank 222 for centering the clamping screw device 12 within the clamping portion 114 of the contact device 11. The screw shank 222 merges with a threaded shank 224 having external threads (or possibly internal threads), by means of which the clamping screw device 12 can be screwed into the mating clamping screw device 52. In this configuration, the screw head 210 rests on the clamping portion 114 with a jaw 211 opposite the contact portion 116, preventing the clamping screw device 12 from being inserted through the through recess 113 in the contact device 11.

[0057] The screw head 210 is embedded at least partially, but preferably, into the jaw 211, in the electrical insulation 212, wherein the screw head 210 and the electrical insulation 212 form a fixing composite. In this case, the screw head 210 may include a unique positive shape (the material present in the screw head 210, such as the outer n-sided profile or the like). Figure 3 ) or other negative shape (the absence of material in the screw head 210, such as the inner n-side profile or the like, Figure 5 ).

[0058] The screw head 210 may include an electromagnetic shield 214 and / or a seal 216, independent of its shape. The electromagnetic shield 214 may be embedded in the electrical insulation 212 or disposed externally on the electrical insulation 212. In this case, the electromagnetic shield 214 extends considerably in the axial direction Ar along the direction of the screw body 220, allowing electrical contact to be formed with the electromagnetic shield 14 of the high-current connector 10. In this case, the shield 214 may make direct electrical contact with the shield 14, and / or electrical contact may be formed by means of additional components therebetween, such as an EMC seal. Furthermore, the electromagnetic shield 214 preferably completely surrounds the electrical insulation 212 and / or the screw head 210 in the circumferential direction Ur.

[0059] The seal 216 is preferably arranged radially outward on the screw head 210 along the circumferential direction Ur, covering the entire circumference, wherein the seal 216 is located on the electrical insulation 212. Figure 3 ) or electromagnetic shielding 14 ( Figure 5 In this case, the seal 216 can be a separate component, or it can be attached to the screw head 210 or the electrical shield 14 in a material-fixed manner, particularly through an injection molding process.

[0060] First embodiment ( Figure 3 The screw head 210 of the clamping screw 200 includes an outer contour that merges with a radially outward flange on the screw shank 222, and its lower edge forms a jaw 211. An electrical insulator 212 is disposed on the outer contour, wherein a circumferential wall 2120 of the electrical insulator 212 preferably surrounds the electrically insulated screw head 210 entirely in the circumferential direction Ur at radially Rr intervals. The circumferential wall 2120 gives the electrical insulator 212 a can-like shape.

[0061] A seal 216 is disposed on a radially Rr circumferential surface 2122 of the circumferential wall 2120, wherein preferably, at least one sealing lip of the seal 216 protrudes radially Rr outward. By means of the seal 216 and the electrical insulation 212, the clamping screw device 12 can be sealed relative to the sealing surface 1530 of the through recess 153 in the housing 15. Furthermore, in this embodiment of the clamping screw 200, an electromagnetic shield 214 may be used.

[0062] Second embodiment ( Figure 5 The screw head 210 of the clamping screw 200 includes a can-shaped inner profile that merges with a radially outward Rr flange on the screw shank 222 and whose lower edge forms a jaw 211. Electrical insulation 212 is arranged inside, at the end, and outside the inner profile, wherein the outer peripheral wall 2120 of the electrical insulation 212 rests directly on the outer side of the can-shaped inner profile.

[0063] Electromagnetic shield 214 is arranged on the radial Rr circumferential surface 2122 of the circumferential wall 2120, on the axial Ar end side of the electrical insulation 212, and on the inner wall of the electrical insulation 212 in the inner contour. A seal 216 is arranged on the radial Rr circumferential surface 2142 of the electromagnetic shield 214, wherein preferably, at least one sealing lip of the seal 216 protrudes radially Rr outward. The clamping screw device 12 can be sealed to the sealing surface 1530 of the through recess 153 in the housing 15 by the seal 216 and the electrical insulation 212. Furthermore, in this embodiment of the clamping screw 200, the electromagnetic shield 214 can be omitted.

[0064] List of reference numerals

[0065] 0 Electrical Entities

[0066] 1 (Electrical) (High Current) Line Connector [10,(20,)...;10,(20,)10;...,(20,)10]

[0067] 10 (Electrical) High Current Connector

[0068] 11 (Electrical) (High Current) Contact Device

[0069] 112 Electrical contact parts of high current circuits

[0070] 114 (Mechanical) Clamping Part

[0071] 113 Through the concave portion

[0072] 116 Electrical contact portion having contact surfaces

[0073] 1160 contact surface

[0074] 12 (Mechanical) (High Current Connection) Clamping Screw Device

[0075] 200 clamping screws, possibly in the form of partially threaded screws (bolts).

[0076] 210 screw head

[0077] 211 Hubei Province

[0078] 212 Electrical insulation

[0079] 2120 Zhou Xiangbi

[0080] 2122 Circumferential surface used for electromagnetic shielding or sealing

[0081] 2124 End face may be used for electromagnetic shielding

[0082] 214 Electromagnetic shielding

[0083] 2142 May be used for the circumferential surface of a seal.

[0084] 216 Seals

[0085] 220 Screw Body

[0086] 222 Screw rod

[0087] 224 Threaded rod with external or internal threads

[0088] 230 screw feet

[0089] 232 Touch protection device

[0090] 13 Electrical insulation cladding

[0091] 131. Cladding portion, such as the upper cladding portion.

[0092] 132 Cladding portion, such as the lower cladding portion

[0093] 14 Electromagnetic shielding for high-current connectors

[0094] 141 Shielding portion, such as the upper shielding portion

[0095] 142 Shielding portion, such as the lower shielding portion

[0096] 15. Housing

[0097] 153 Through-recess

[0098] 1530 Inner side, sealing surface penetrating the recess

[0099] 1532 Anti-loss device

[0100] 154 Protective cap, protective cap slider

[0101] 20 (Electrical) High Current Line Connections

[0102] 22 (Electrical) High Current Circuits

[0103] 24 Electromagnetic shielding for high-current circuits

[0104] 50 (Electrical) High Current Mating Connector

[0105] 51 (High Current) Matching Contact Device

[0106] 512 Electrical contact parts of high current circuits

[0107] 513 Through-recess

[0108] 514 (Mechanical) Clamping Part

[0109] 516 (Electrically) mating contact portion having a mating contact forming area

[0110] 5160 Contact area formed

[0111] 52 (Mechanical) (High Current Connection) with Clamping Screw Device

[0112] 610 Matching screw head

[0113] 611 Hubei Province

[0114] 620 Mating screw body with internal or external threads

[0115] 632 Touch Protection Device

[0116] 55 Housing

[0117] Ar axial clamping screw device and mating clamping screw device

[0118] Rr radial clamping screw device and mating clamping screw device

[0119] Ur circumferential clamping screw device and mating clamping screw device

Claims

1. A mechanical high-current connection clamping screw device (12) for an electrical high-current connector (10), comprising: A clamping screw (200), extending in the axial direction (Ar) of the clamping screw device (12), and divided into a rotatable screw head (210), a screw body (220), and a screw foot (230), characterized in that: The screw head (210) includes electrical insulation (212) on the outside, which includes electromagnetic shielding (214) and a seal (216). The screw head (210) is embedded in the electrical insulation (212), and the seal (216) is arranged outward along the circumferential direction (Ur) and radially (Rr) on the circumferential surface (2142) of the electromagnetic shield (214).

2. The mechanical high-current connection clamping screw device (12) according to claim 1, characterized in that: The mechanical high-current connection clamping screw device (12) is used in the automotive field.

3. The mechanical high-current connection clamping screw device (12) according to claim 1, characterized in that: • The electrical insulation (212) includes a circumferential surface (2122) on which the electromagnetic shield (214) and / or the seal (216) are arranged radially (Rr) outward. • Electrical insulation (212) is injection molded on the outside of the screw head (210), injection molded on the inside of the electromagnetic shield (214), or injection molded between the screw head (210) and the electromagnetic shield (214).

4. The mechanical high-current connection clamping screw device (12) according to claim 1, characterized in that: • The electrical insulation (212) includes an end face (2124), on which the electromagnetic shield (214) is arranged on the outer side, and / or • The screw head (210) and / or electromagnetic shield (214) include an outer or inner contour for the screwdriver.

5. The mechanical high-current connection clamping screw device (12) according to any one of claims 1-4, characterized in that: • The electromagnetic shield (214) is in the form of a can that completely covers the screw head (210). • Electromagnetic shielding (214) is a form of deep-drawn electromagnetic shielding (214). • The seal (216) is in the form of an annular seal or a sleeve seal having at least one sealing lip, and / or • The seal (216) is injection molded onto the electrical insulation (212) or electromagnetic shield (214).

6. The mechanical high-current connection clamping screw device (12) according to any one of claims 1-4, characterized in that: • The screw head (210) includes a jaw (211) through which the electrical high-current contact device (11) of the high-current connector (10) can be mechanically clamped. • The screw body (220) includes a substantially smooth screw shank (222) and a threaded shank (224) axially (Ar) adjacent to the screw shank (222), and / or • The threaded rod (224) or screw foot (230) includes a touch guard (232) protruding away from the threaded rod (224).

7. An electrical high-current connector (10) for a high-current line (22) made of copper or aluminum, comprising: A mechanical high-current connection clamping screw device (12) and an electrical high-current contact device (11) for making electrical contact with an electrical high-current mating contact device (51), wherein the contact device (11) can be mechanically clamped onto the mating contact device (51) by the clamping screw device (12), characterized in that: The mechanical clamping screw device (12) of the high current connector (10) is designed according to any one of the preceding claims 1-6.

8. The high-current electrical connector (10) according to claim 7, characterized in that: • The contact device (11) includes an electrical contact portion (112) for a high-current line (22), a mechanical clamping portion (114), and an electrical contact portion (116) having a contact surface (1160) that abuts against the mating contact device (51). • The high-current connector (10) includes an electromagnetic shield (14) that is in electrical contact with the electromagnetic shield (214) of the clamping screw assembly (12), and / or • The high-current connector (10) includes a housing (15) having a through recess (153) for inserting a clamping screw device (12).

9. The high-current electrical connector (10) according to claim 7, characterized in that: • The electromagnetic shield (14) of the high-current connector (10) is disposed on the electrical insulation sheath (13) of the contact device (11). • The electrical insulation cladding (13) comprises two cladding portions (131, 132), each cladding portion including, on its outer side, a shielding portion (141, 142) of the electromagnetic shield (14) of the high-current connector (10), and / or • The two cladding portions (131, 132) are latched together, and the two shielding portions (141, 142) are in conductive contact with each other.

10. The high-current electrical connector (10) according to claim 8, characterized in that: • The seal (216) of the clamping screw device (12) is capable of sealing contact with and / or with the inner side (1530) of the through recess (153). • The seal is capable of making sealing contact on the inside of the through recess (153) and on the outside of the clamping screw device (12), • The housing (15) comprises two housing portions, with a contact device (11) having an electrically insulating cladding (13) and an electromagnetic shield (14) accommodated between the two housing portions, and / or • The through recess (153) of the housing (15) can be covered by a protective cap (154), wherein the protective cap (154) is in the form of a protective cap slide on the housing (15) with the bearing mounted on it.

11. The high-current electrical connector (10) according to any one of claims 7-8, characterized in that, The high-current connector (10): • Designed for use with a constant current of at least 100A, • Designed for use with a voltage of at least 200V, and / or • Compliant with LV214, meeting the LV214 level or meeting the vibration requirements of severity level 2, 3 or 4.

12. A high-current electrical line connector (1), characterized in that: The high-current line connector (1) includes at least one mechanical high-current connection clamping screw device (12) according to any one of claims 1-6 and / or at least one electrical high-current connector (10) according to any one of claims 7-11.

13. The electrical high-current line connector (1) according to claim 12, characterized in that: • The contact device (11) includes an electrical high-current line connection (20) or an electrical high-current line (22) in its contact portion (112). • The electromagnetic shielding (14) of the high-current connector (10), the contact portion (112) of the shielding contact device (11), and the connection area of ​​the high-current line (22), and / or • The line connector (1) includes exactly two electrical high-current connectors (10).

14. The electrical high-current line connector (1) according to claim 13, characterized in that: • The high-current line (22) is embedded in the electromagnetically shielded high-current line connection (20). • The electromagnetic shield (14) of the high-current connector (10) is in conductive contact with the electromagnetic shield (24) of the high-current line (22), and / or • The external electrical insulation of the high current line (22) is sealed relative to the housing (15) and secured by a latching device.

15. An electrical entity for use in the automotive field, characterized in that: The electrical entity includes a mechanical high-current connection clamping screw device (12) according to any one of claims 1-6, an electrical high-current connector (10) according to any one of claims 7-11, and / or an electrical high-current line connector according to any one of claims 12-14.

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