EP3407362A1 - Conduite électrique ainsi que fiche de raccordement électrique - Google Patents

Conduite électrique ainsi que fiche de raccordement électrique Download PDF

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Publication number
EP3407362A1
EP3407362A1 EP18163238.1A EP18163238A EP3407362A1 EP 3407362 A1 EP3407362 A1 EP 3407362A1 EP 18163238 A EP18163238 A EP 18163238A EP 3407362 A1 EP3407362 A1 EP 3407362A1
Authority
EP
European Patent Office
Prior art keywords
electrical
plug
recess
cross
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18163238.1A
Other languages
German (de)
English (en)
Other versions
EP3407362B1 (fr
Inventor
Tobias ENZINGER
Mingyuan Li
Benjamin Söhnle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Audi AG
Original Assignee
Audi AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Publication of EP3407362A1 publication Critical patent/EP3407362A1/fr
Application granted granted Critical
Publication of EP3407362B1 publication Critical patent/EP3407362B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/02—Single bars, rods, wires, or strips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/30—Insulated conductors or cables characterised by their form with arrangements for reducing conductor losses when carrying alternating current, e.g. due to skin effect
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/187—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member in the socket

Definitions

  • the invention relates to an electrical line having a cross-sectional area and a longitudinal extent which is perpendicular to the cross-sectional area, wherein a recess which is peripherally closed in cross-section is formed in the line.
  • the invention further relates to an electrical connector.
  • the electrical line is used to conduct electrical current and in this respect, for example, the electrical connection of two circuits or two circuit elements.
  • the electrical line consists of an electrically conductive material and has a longitudinal extent in the direction of its longitudinal central axis and a cross-sectional area perpendicular to the longitudinal extent or the longitudinal central axis.
  • the longitudinal central axis can in this case have a basically arbitrary course.
  • the electrical line does not have to go straight in this respect.
  • the longitudinal central axis runs straight at least partially or over the entire longitudinal extent of the electrical line.
  • the longitudinal center axis is curved at at least one point and insofar has at least one curvature.
  • the recess formed in the electrical line is in this respect peripherally closed in cross section and extends in the direction of the longitudinal extent only by a part of the line.
  • the recess is also seen in longitudinal section, ie in the direction of the longitudinal extent, formed edge-closed.
  • the recess can also be present, for example, as a blind recess, that is to say that it is only opened on one side in a longitudinal section or in the direction of the longitudinal extent, wherein an opening of the recess extends through a surface of the electrical line.
  • the surface is present for example on a lateral surface of the electrical line or an end face of the electrical line.
  • the electrical line is provided in particular for the conduction of alternating current.
  • alternating current the so-called skin effect causes the electrical current to be conducted primarily in the area of the surface of the electrical line. This means that a large part of the electrical current flows in only a small part of the cross-sectional area.
  • the entire cross-sectional area of the electrical line contributes to the thermal conductivity or thermal conductivity of the electrical line.
  • the electrical line conducts so far not only electrical power, but also heat, wherein - in the case of alternating current - the current density of the electrical current within the electrical line due to the skin effect at different points of the cross-sectional area is different and in particular starting from the longitudinal center axis in radial direction increases to the outside.
  • the heat flow density in the direction of the longitudinal central axis is constant or at least approximately constant over the cross-sectional area of the electrical line, in particular in the radial direction from the inside to the outside.
  • the electrical line should now be designed such that it acts as a thermal resistance at the same time very good electrical conductivity. For this reason, the recess is provided in the line, namely at a point where the thermal resistance should be increased.
  • a further embodiment of the invention provides that the recess is completely enclosed by the conduit. This means that the recess is completely closed at the edge, so it is continuously spaced from the surface of the electrical line. Viewed both in cross-section and in longitudinal section, the recess is in this respect designed to be closed at the edge and is therefore completely embedded in the conduit or accommodated therein. This allows the formation of a line that electrically connects two electrical devices, but significantly reduces heat transfer between them.
  • a further embodiment of the invention provides that the line has two outer layers which, viewed in cross-section, accommodate at least one inner layer between them, the recess being formed in a closed manner in longitudinal section in the inner layer and in Section seen on opposite sides of the outer layers is closed.
  • the line consists in this respect of several layers, namely at least the two outer layers and the at least one inner layer together.
  • any number of inner layers may be provided, which are arranged between the outer layers. However, it may also be present only a single inner layer.
  • the recess is configured, namely seen in longitudinal section edge-closed.
  • the recess preferably passes completely through the inner layer.
  • the recess has a smaller length in the direction of the longitudinal extension of the electrical line than the inner layer, so that it is spaced from end faces of the inner layer.
  • the height of the recess corresponds to the height of the inner layer, so that it passes through on both sides.
  • the outer layers are now arranged on opposite sides of the inner layer such that they cover the recess and thus close. Seen in cross section, the recess extends in this respect between facing inner sides of the two outer layers. Overall, therefore, an electrical line is realized in which the recess is completely enclosed by the line.
  • the line is formed multi-layered. This allows easy production of the recess.
  • the line consists of only two layers, wherein the recess is formed as a blind recess in one of the layers.
  • the respective other layer is then arranged on the above-mentioned layer such that the recess is covered and thus closed.
  • the recess is designed to be open-edged in longitudinal section, wherein it passes through an axial end face of the conduit. Furthermore, it is provided that the recess extends only over the part of the longitudinal extent of the line. In this case, it is arranged such that it passes through the axial end side of the line. This means that it is arranged at a distance from the axial end face of the other axial end face opposite, so this does not pass through.
  • Such a configuration of the electrical line is realized in particular if the electrical line consists of solid material.
  • the recess can be formed in a simple manner, the axial end side cross-cutting in the line, for example by means of a spannabnatureen method.
  • Such an embodiment of the electrical line may be particularly preferably in the context of an electrical plug connection, wherein the electrical line is configured on the side of the axial end side as a plug, which is insertable into a socket of the electrical connector.
  • the transfer of heat via the electrical plug connection that is, for example, from the plug to the socket or vice versa can be particularly efficiently prevented.
  • a development of the invention provides that, seen in cross-section, the recess is formed centrally in the conduit.
  • This arrangement of the recess in the line allows a particularly good electrical conductivity, because the current density is distributed symmetrically through the line in cross section, in particular symmetrically with respect to the longitudinal central axis or the longitudinal extension.
  • a further advantageous embodiment of the invention provides that the recess has an outer cross-sectional shape which corresponds to an outer cross-sectional shape of the line.
  • the outer cross-sectional shape of the line itself can basically be chosen arbitrarily. For example, the line in cross-section round, oval, stadium-shaped, rectangular or square.
  • the recess should have the same outer cross-sectional shape as the line. Accordingly, the recess in the circumferential direction with respect to the longitudinal extent seen in cross section throughout the same distance to an outer surface of the conduit.
  • the electrical line is designed as a plug of an electrical plug connection.
  • the electrical lead has good electrical conductivity, but high thermal resistance compared to a hollow lead. Accordingly, the transmission of heat along the longitudinal extent of the electrical line can be particularly advantageously prevented by means of the electrical line or the plug, namely in particular over the plug connection.
  • the invention further relates to an electrical connector, comprising at least one electrical line designed as a plug, in particular an electrical line according to the preceding embodiments, and having a socket for receiving a front side of the plug, wherein the electrical line has a cross-sectional area and a perpendicular to the cross-sectional area Has longitudinal extent and in the line a seen in cross-section edge-closed recess is formed. It is provided that the recess extends only over part of the longitudinal extent of the line.
  • the electrical connector has the plug and the socket, wherein the plug is insertable into the socket for establishing an electrical connection between the plug and the socket.
  • the electrical connector should now be designed such that, although a reliable and very good electrical contact between the plug and the socket can be made by plugging the same into each other, but the heat conduction through the connector away is at least partially interrupted or reduced. This is realized by the configuration of the recess in the line or the plug.
  • a further development of the invention provides that, when the plug is arranged in the socket, an outer contact surface of the plug abuts against an inner contact surface of the socket, in particular a contact spring of the socket, for producing an electrical connection, the recess being seen in a longitudinal section in the axial direction of one end face the socket facing away from the front side of the plug passes through.
  • the plug and the socket are thus dimensioned such that after insertion of the plug into the socket, the outer contact surface of the plug bears against the inner contact surface of the socket, namely, that an electrical connection between the plug and the socket is made.
  • the inner contact surface of the socket is, for example, on the contact spring of the socket.
  • the contact spring can in principle be configured as desired, but preferably it is in the form of a circumferentially continuous spring ring.
  • the contact spring may be arranged on the plug in an analogous manner, so that in this respect the outer contact surface of the plug is formed on the contact spring.
  • the recess passes through that end face of the plug which faces or faces a front side of the socket, the end face of the socket preferably receiving the plug from a bottom Plug receptacle of the socket is formed.
  • the recess starting from the end face of the plug has a depth which corresponds to at least one insertion depth of the plug in the socket or larger.
  • the insertion depth of the plug corresponds to a penetration depth of the plug in the socket during normal use.
  • the insertion depth is just as large as the depth of a socket of the socket, so that therefore the end face of the plug rests against the bottom of the socket.
  • the recess be designed such that it extends out of the socket within the plug.
  • the depth of the recess so its extension in the direction of the longitudinal extent, at least as large as the insertion depth of the plug, in particular as the depth of the plug-in receptacle.
  • the depth of the recess is greater than the insertion depth or the depth of the plug-in receptacle.
  • the depth of the recess is at least 10%, at least 20%, at least 30%, at least 40% or at least 50% greater than the insertion depth.
  • the depth of the recess is at most 250%, at most 200% or at most 150% of the insertion depth. With such a configuration, a particularly large thermal resistance across the connector is realized away.
  • FIG. 1 shows a schematic exploded view of an electrical line 1, which consists of two outer layers 2 and 3 and at least an inner layer 4, in the embodiment shown here, two inner layers 4, composed. In the following, only an inner layer 4 will be discussed. The embodiments are always transferable to the respective other of the inner layers 4.
  • the electrical line 1 is designed as a rectangular conductor, that is configured rectangular in cross section.
  • the two outer layers 2 and 3 receive the inner layer 4 and the inner layers 4 between them.
  • the outer layers 2 and 3 are on opposite sides of the inner layer 4 and the inner layers 4 at this or this.
  • a recess 5 is formed, which has a continuous edge 6 and is designed so far marginally closed.
  • the recess 5 is in this case in the direction of a longitudinal extent of the electrical line 1 or in longitudinal section through the electrical line 1 edge-closed, whereas seen in cross-section edge-open in the inner layer 4 is formed. This means that it fully penetrates the inner layer 4 when seen in cross-section, that is to say that it engages both on the outer layer 2 and on the side facing the outer layer 3 a surface of the inner layer 4.
  • outer layers 2 and 3 are now arranged with respect to the inner layer 4, that they close the recess 5.
  • the recess 5 is seen in cross-section through the electrical line 1 seen edge closed in this present.
  • FIG. 2 shows the electrical line 1 in cross section. It is clear that the recess 5 in the longitudinal section of the inner layer 4 and in cross-section of the outer layers 2 and 3 is limited, namely such that it is completely enclosed by the conduit 1.
  • FIG. 3 shows a schematic longitudinal sectional view of an electrical connector 7, which has a plug 8 and a socket 9.
  • the plug 8 is formed by an alternative embodiment of the electrical line 1.
  • the electrical line 1 seen in longitudinal section is configured open-edge, so that it passes through an axial end face 10 of the line 1.
  • the electrical line 1 is preferably round when viewed in cross-section, ie it has a round outer cross-sectional shape. Analogous to this, an outer cross-sectional shape of the recess 5 is also round.
  • the recess 5 is so far, for example, in the form of a front side 10 by a thorough hole in the electrical line 1 and the plug 8 before.
  • the socket 9 has a plug-in receptacle 11 for receiving the plug 8.
  • the plug-in receptacle 11 has in the axial direction with respect to a longitudinal central axis 12 of the plug 8 and / or the socket 9 to a certain depth.
  • a present during normal operation of the connector 7 insertion depth or penetration depth of the plug 8 in the socket 9 is preferably less than the depth of the plug-in receptacle 11, so that the end face 10 spaced by arrangement of the plug 8 in the socket 9 is arranged by a bottom 13 of the socket 11. However, it can also be provided that the end face 10 rests against the bottom 13.
  • the insertion depth of the plug 8 in the socket 9 is less than the depth of the recess 5, also in the direction of the longitudinal central axis 12 or in the direction of a longitudinal extension of the electrical conductor 8. That means that the recess 5 after arrangement of the plug 8 extends in the socket 9 in the axial direction with respect to the longitudinal central axis 12 to from the plug-in receptacle 11 out. Accordingly, the thermal conductivity over the connector 7 of time is significantly reduced, so that a heat transfer from the plug 8 to the socket 9 and vice versa is drastically reduced.
  • the socket 9 in this case forms an electrical connection of an electrical machine
  • the plug 8 represents an electrical connection of power electronics for the electrical machine.
  • the electric machine heats up.
  • heat transfer of the heat generated in the electrical machine to the power electronics is undesirable, so that extensive thermal decoupling of the electrical machine and power electronics is desired.
  • the presented here embodiment of the electrical conductor 1 and the connector 7 is preferably used for electrical contacting of the electrical machine with their power electronics.
  • the plug 8 has an outer contact surface 14, which bears electrically contacting on an inner contact surface 15 of the socket 9.
  • the inner contact surface 15 of the socket 9 is preferred on a contact spring 16, which is configured for example as a ring contact spring 16.
  • the contact spring 16 surrounds the longitudinal central axis 12 and after the arrangement of the plug 8 in the socket 9 and the plug 8 in the circumferential direction continuously or uninterrupted.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
EP18163238.1A 2017-05-22 2018-03-22 Fiche de raccordement électrique Active EP3407362B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017208642.4A DE102017208642A1 (de) 2017-05-22 2017-05-22 Elektrische Leitung sowie elektrische Steckverbindung

Publications (2)

Publication Number Publication Date
EP3407362A1 true EP3407362A1 (fr) 2018-11-28
EP3407362B1 EP3407362B1 (fr) 2022-08-03

Family

ID=61749993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18163238.1A Active EP3407362B1 (fr) 2017-05-22 2018-03-22 Fiche de raccordement électrique

Country Status (3)

Country Link
EP (1) EP3407362B1 (fr)
CN (1) CN108932991B (fr)
DE (1) DE102017208642A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2110888A2 (fr) * 2008-04-15 2009-10-21 Morsettitalia S.p.A. Corps conducteur multicouche et son procédé de production

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3886301A (en) * 1974-04-12 1975-05-27 Ite Imperial Corp Plug-in joint for high current conductors in gas-insulated transmission system
US4053700A (en) * 1975-06-06 1977-10-11 Westinghouse Electric Corporation Coupling flex-plate construction for gas-insulated transmission lines
DE2658165A1 (de) 1976-12-22 1978-07-06 Felten & Guilleaume Carlswerk Innengekuehltes hochspannungs- energiekabel mit einziehbarem kuehlmittelrohr
US5213517A (en) * 1992-02-10 1993-05-25 G & H Technology, Inc. Separable electrodes with electric arc quenching means
EP2398120A4 (fr) * 2009-02-13 2012-11-14 Mitsubishi Electric Corp Dispositif de contact
DE102009041919A1 (de) * 2009-09-17 2011-03-31 Tyco Electronics Amp Gmbh Elektrisches Kontaktelement für Hochstromsteckverbinder und Herstellungsverfahren
WO2013155668A1 (fr) * 2012-04-16 2013-10-24 Abb Technology Ltd. Bus pour installations électriques moyenne tension
US8851940B2 (en) * 2012-07-13 2014-10-07 Deutsch Engineered Connecting Devices, Inc. Multi-piece socket contact assembly
DE112016001849T5 (de) * 2015-04-21 2018-01-04 Sumitomo Wiring Systems, Ltd. Leitfähiges Element
CN204991172U (zh) * 2015-09-29 2016-01-20 施耐德电气华电开关(厦门)有限公司 一种新型的矩形铜母排

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2110888A2 (fr) * 2008-04-15 2009-10-21 Morsettitalia S.p.A. Corps conducteur multicouche et son procédé de production

Also Published As

Publication number Publication date
CN108932991A (zh) 2018-12-04
CN108932991B (zh) 2021-01-08
DE102017208642A1 (de) 2018-11-22
EP3407362B1 (fr) 2022-08-03

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