EP2649684B1 - Hochstrom-steckverbinder - Google Patents

Hochstrom-steckverbinder Download PDF

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Publication number
EP2649684B1
EP2649684B1 EP11785336.6A EP11785336A EP2649684B1 EP 2649684 B1 EP2649684 B1 EP 2649684B1 EP 11785336 A EP11785336 A EP 11785336A EP 2649684 B1 EP2649684 B1 EP 2649684B1
Authority
EP
European Patent Office
Prior art keywords
contact
contact section
section
plug connector
spring element
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.)
Active
Application number
EP11785336.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2649684A1 (de
Inventor
Hubertus Goesmann
Philipp Petz
Axelle Hauck
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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
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Publication of EP2649684A1 publication Critical patent/EP2649684A1/de
Application granted granted Critical
Publication of EP2649684B1 publication Critical patent/EP2649684B1/de
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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
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • 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 a high-current (HS) plug connector for currents of more than 100 amperes, in particular of more than 200 amperes.
  • HS connector comprises a first connection element which comprises a first contact section and a first connection section.
  • the HS connector has a second connection element which comprises a second contact section and a second connection section.
  • a spring element arranged between the first and the second contact section is provided for establishing an electrical connection between the first and the second connecting element.
  • the first and second connection sections are each connected to an electrical conductor.
  • the first and second contact sections are each designed as flat pieces.
  • a first, flat contact surface is formed on a front side of the first contact section and a second, flat contact surface is formed on a front side of the second contact section.
  • the spring element is clamped exclusively between the first and the second contact surface.
  • High-current connectors are used, for example, for the electrical connection of energy storage modules of an energy store in motor vehicles.
  • energy stores are used, inter alia, in battery-operated motor vehicles and in motor vehicles that can be operated both electrically and with an internal combustion engine. Due to the high power required by drive motors and a not arbitrarily high voltage of the energy storage devices, very high currents can occur in such energy storage devices during operation.
  • screwed connections are used for the electrical connection of individual components, but also those in which two connecting elements are connected to one another by a plug connection.
  • Known high-current plug connectors comprise a round or rectangular metal housing in the first connection element, into which a corresponding second connection element, which is designed as a circular bolt or rectangular sword, can be inserted.
  • a spring element for example in the form of a contact blade, is arranged between these contact partners.
  • the spring element is often mechanically connected to one of the two contact partners.
  • Respective cables are attached to the connecting elements, which are connected at their respective other end to an electrical component of the energy store, an electrical component operated by the energy store, or another connecting element.
  • Such an HS connector is, for example, from DE 23 64 356 A1 known.
  • the known HS connectors have the disadvantage that they always have a three-layer structure in cross section when the bolt or sword is inserted. Since the HS connector has to be provided with insulation on the outside in order to ensure protection against contact and protection against malfunctions, the space required for the HS connector is very large.
  • the patent U.S. 5,865,638 A discloses a connecting element in which two contact surfaces are face to face over a spring element. The connection is closed by means of a rotary movement and by laterally lying tabs extending orthogonally to the contact surface.
  • the disclosure document DT 26 33 892 A1 discloses an electrical plug connection, with a socket and a plug pin, between which a resilient contact element is arranged.
  • the patent CH 589 946 A5 discloses an electrical plug connection in which either a socket or a plug pin has a wave-like surface on which a wave-shaped spring is arranged.
  • the invention creates a high-current (HS) plug connector for currents of more than 100 amperes, in particular more than 200 amperes, with a first connecting element, a second connecting element and a spring element.
  • the first connection element comprises a first contact section and a first connection section.
  • the second connection element comprises a second contact section and a second connection section.
  • the spring element is arranged between the first and the second contact section to produce an electrical connection between the first and the second connecting element.
  • the first and second connection sections are each connected to an electrical conductor.
  • the HS connector is characterized in that the first and second contact sections are each designed as flat pieces: a first, flat contact surface is formed on a front side of the first contact section and a second, flat contact surface is formed on a front side of the second contact section.
  • the spring element is braced exclusively between the first and second contact surface for the electrical connection of the first and the second contact section.
  • the first and the second contact section are connected to each other by a form fit, which can be produced by a translational displacement of the first contact section relative to the second contact section parallel to the planes of the first and the second contact surface, with a force generated by the spring element perpendicular to the planes of the first and second contact surface a loosening of the two contact sections is prevented.
  • a form fit which can be produced by a translational displacement of the first contact section relative to the second contact section parallel to the planes of the first and the second contact surface, with a force generated by the spring element perpendicular to the planes of the first and second contact surface a loosening of the two contact sections is prevented.
  • the two connecting elements can be easily connected by overcoming the clamping force of the spring element.
  • the spring element provided between the first and second connecting element not only provides the area required for the current-carrying capacity, but at the same time also provides a clamping force which prevents inadvertent detachment of the second connecting element from the first connecting element.
  • the HS connector can - in cross-section - be constructed with only two layers, which reduces the space required compared to conventional HS connectors can.
  • a reduced (in the worst case half) contact area of the first and second contact section is available compared to the known HS connector. This is compensated by the fact that almost the entire theoretically possible contact area between the first and second contact surface of the first and second contact section is used to establish an electrical connection due to a corresponding shape of the spring element.
  • the first and / or the second contact section has at least one recess into which associated first tabs of the other contact section project, which are in the plane or parallel to the plane of the other contact section.
  • the recess and the associated first tabs provide a form-fitting connection outside the contact surfaces or sections, which enables the desired two-layer construction of the HS connector according to the invention.
  • this structural configuration ensures that a force loading the spring element is generated, whereby the spring element itself prevents unintentional loosening of the two contact sections due to the generated counterforce by a movement parallel to the planes of the contact surfaces.
  • the second and / or the first contact section has at least one second tab which encompasses the other contact section in a form-fitting manner, the second tabs lying in a parallel plane of the associated contact section.
  • bracing of the first and second contact sections for establishing the electrical connection of the first and second contact sections is brought about by a housing surrounding the plug connection.
  • This housing can simultaneously provide insulation for the HV connector.
  • the use of a housing surrounding the plug connection also has the consequence that configurations for the form-fitting connection of the first and second contact section can optionally be omitted.
  • the first and / or the second connecting part can be produced by a stamping and bending process or equivalent methods. Manufacturing processes of this type have the advantage that the HS connectors can be manufactured in a simple and inexpensive manner.
  • the first connecting part is expediently made of aluminum (Al) or alloys thereof.
  • the second connecting part is preferably made of copper (Cu) or nickel (Ni) or alloys thereof.
  • Cu copper
  • Ni nickel
  • other materials or material combinations are also conceivable.
  • the preferred materials mentioned have already proven their worth in HV connectors, so that no deterioration in contact is to be expected even over long periods of use.
  • a further embodiment provides that the electrical conductors are welded to a respective connection section of the first and / or the second connection part or are connected by means of a crimp connection.
  • the electrical conductors can for example be in the form of cables or strands or foils.
  • the spring element has a number of lamellae.
  • the spring properties of the spring element are favored by the slats.
  • the number of lamellae can ensure reliable and large-area contact between the contact sections of the first and second connecting elements, whereby the desired current-carrying capacity is provided.
  • Another advantage of a spring element having lamellae is that it is easy to manufacture.
  • the spring element is a stamped sheet metal.
  • the spring element can be provided with particularly favorable manufacturing costs.
  • the spring element expediently extends, at least in sections, essentially parallel to the planes of the first and the second contact surface. In this way, a very large-area contact can be provided between the contact surfaces of the contact sections of the connecting elements. The larger the contact surfaces, the greater the current carrying capacity of the HV connector.
  • the spring element is mechanically connected to the first contact section or the second contact section. This favors the production of the plug connection through a relative movement of the first and second connecting elements to one another.
  • Fig. 1 shows a schematic, perspective illustration of a high-current (HS) plug connector according to the invention.
  • the HS connector is suitable for currents of more than 100 amps, or even more than 200 amps. Currents of this magnitude occur, for example, in energy storage devices for drive machines in motor vehicles.
  • the HS plug connector comprises a first connection element 10 and a second connection element 20 corresponding thereto.
  • the first connection element 10 has a first contact section 11 and a first connection section 12.
  • the second connection element 20 comprises a second contact section 21 and a second connection section 22.
  • the second connection section 22 is, for example, connected on its end face to an electrical conductor 23 designed as a film.
  • first connecting part 10 is made of aluminum or an aluminum alloy
  • second connecting part 20 is preferably made of copper or nickel or an alloy of one or both of these materials. This combination of materials for connectors has proven itself in terms of contact transition and durability.
  • both the first contact section 11 and the second contact section 21 have a respective first and second contact surface 11A, 21A.
  • the contact surfaces 11A, 21A face one another.
  • An electrical connection is established exclusively via the mutually facing contact surfaces 11A, 21A, with a spring element 30 designed as a contact lamella being arranged between them.
  • a large-area connection of the two contact surfaces 11A, 21A takes place via the spring element 30, as a result of which the required currents of more than 100 amperes or more than 200 amperes can be transmitted between the contact sections 11, 21 with only slight losses.
  • the spring element 30 preferably has a plurality of lamellae for simultaneous good current transmission and for exerting a force directed perpendicular to the planes of the contact surfaces 11A, 21A.
  • the multiplicity of lamellae can be formed, for example, essentially parallel to one another.
  • the lamellae can be produced, for example, by a stamping process of a sheet metal part that is flat as a starting material. In order to be able to provide the spring action of the spring element, the stamped sheet metal can be reshaped into a, for example, wavy or otherwise suitable shape by means of appropriate bending processes.
  • the spring element has in cross section (ie in a side view according to FIG Figures 2 and 4th ) an essentially arched configuration in which "feet" of the spring element are supported, for example, on the contact surface 21A of the contact section 21, while a "belly" connecting the feet rests on the contact surface 11A of the contact section 11 of the first connecting element 10 for as long as possible.
  • the area proportions of the feet and stomach are roughly the same.
  • the individual contact lamellas of the spring element 30 can be designed in a wave-like or meandering shape.
  • the undulating or meandering sections here run parallel to the plane of the contact surface 11A.
  • the first and second contact sections 11, 21 of the connecting elements 10, 20 are connected to one another by a form fit.
  • the form fit is achieved by shifting the first contact section 11 relative to the second.
  • Contact portion 21 made parallel to the planes of the first and second contact surfaces 11A, 21A. Because the spring element 30 or its individual contact lamellae extend at least in sections essentially or approximately perpendicular to the planes of the first and second contact surfaces 11A, 21A, the spring element generates a force which is perpendicular to the planes of the first and second Contact surfaces 11A, 21A is directed.
  • This clamping force prevents loosening of the two contact sections, since for this purpose a tensile force predetermined by the shape of the spring element 30 and the connecting elements 10, 20 has to be overcome. If this is chosen to be sufficiently large, unintentional loosening, e.g. due to permanent vibrations, almost impossible.
  • the spring element 30 is preferably mechanically connected to the first contact section 11 or to the second contact section 21 of the connecting element in question.
  • a connection can be implemented, for example, by a clip or crimp connection.
  • Positive connections between the spring element and one of the contact sections 11, 21 are also conceivable in principle.
  • the high-current connector is at least in the area of the contact sections, and optionally the connection sections, from an insulating housing, e.g. made of plastic.
  • the first and second connecting elements 10, 20 are each bent by forming in such a way that a first tab 25 of the second connecting element 20 passes through a recess (not explicitly visible) of the first Connecting element 10 protrudes.
  • the recess of the first connecting element 10 is arranged in a transition section 17 which connects the contact section 11 to the connecting section 12.
  • Connecting section 12 and contact section 11 lie in mutually parallel planes.
  • a tab 15 extending over the entire width of the contact section 11 is encompassed by second tabs 26 - 1, 26 - 2 of the second connecting element 20.
  • the second tabs 26-1, 26-2 protrude from the plane of the contact section 21 in the direction of the first contact section 11 in such a way that the first tab 15 is acted upon by a force in the direction of the second connecting element 20, which is caused by the between the contact surfaces 11, 21 arranged spring element is caused.
  • the connecting sections 12, 22 of the first and second connecting elements 10, 20 are arranged in mutually parallel but different planes.
  • Another characteristic of this HS plug connection is that the electrical conductor 23, which contacts the connecting section 22 of the second connecting element, is arranged to the side of the connection, while the electrical conductor 13 of the first connecting element 10 contacts the connecting section 12 along a direction in which the Connecting portion and the contact portion 12, 11 extend.
  • the Figures 3 and 4 show a second embodiment of an HS connector according to the invention.
  • the second exemplary embodiment of the HS connector according to the invention differs from the first exemplary embodiment in the different types of bends in the first connecting element 10.
  • the first and second contact sections are connected to one another by a form fit, which is achieved by shifting the first contact section can be produced relative to the second contact section parallel to the planes of the first and second contact surfaces 11A, 21A.
  • the form fit takes place specifically to the side of the contact sections 11, 21.
  • the second connecting element 20 is L-shaped.
  • a short section 27 which extends perpendicular to the plane of the contact section 21 and is arranged at one end of the contact section 21, two recesses 24-1, 24-2 are provided, into which first tabs 15-1, 15-2 of the first connecting element 10 protrude.
  • the first tabs 15-1, 15-2 are inclined from the plane of the contact section 11 at an acute angle in the direction of the second connecting element 20.
  • a first tab 25 of the second connecting element protrudes through a recess in the transition section 17 of the first connecting element 10. This also ensures a simple production of the connection with a small space volume at the same time.
  • FIG. 5 shows a HS connector in a schematic, perspective illustration.
  • the second connecting element 20 has two second tabs 26 - 1, 26 - 2 which are arranged next to one another and which clasp the contact section 11 of the first connecting element 10.
  • the second tabs 26-1, 26-2 encompass the contact section 11 of the first connecting element, the ends of the second tabs 26-1, 26-2 lying in a parallel plane of the associated contact section 21 of the second connecting element 20.
  • a spring element 30 is arranged between the first and the second connecting element 10, 20. Lamellae 31 of the spring element 30 extend in the direction of the tab receptacles of the second tabs 26-1, 26-2.
  • CuNi 3 Si, CuCrAgFeTiSi, CuBe 2 , CuCoBe 2 or CuCrZr come into consideration as the material for the spring 30.
  • the bracing of the first and second contact sections 11, 21 for establishing the electrical connection is achieved by an in Fig. 5 causes not shown, the connector surrounding housing.
  • the housing which is formed for example from an insulating plastic and at the same time insulates the plug connection, ensures a force absorption of the contact section 11 of the connecting element 10 pushed into the interior of the housing.
  • the housing is here with the connecting section, for example, of tubular design 22 locked.
  • the connecting section 22 is slipped over a correspondingly designed battery terminal of a storage cell 40 for illustration purposes only and can be welded to this, for example.
  • the HS plug connectors designed according to the invention which are able to carry currents of more than 100 or even 200 amperes, are smaller and lighter than known HS plug connectors and can be manufactured at lower costs.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
EP11785336.6A 2010-12-08 2011-11-11 Hochstrom-steckverbinder Active EP2649684B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010062580A DE102010062580A1 (de) 2010-12-08 2010-12-08 Hochstrom-Steckverbinder
PCT/EP2011/005675 WO2012076101A1 (de) 2010-12-08 2011-11-11 Hochstrom-steckverbinder

Publications (2)

Publication Number Publication Date
EP2649684A1 EP2649684A1 (de) 2013-10-16
EP2649684B1 true EP2649684B1 (de) 2020-10-21

Family

ID=45001694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11785336.6A Active EP2649684B1 (de) 2010-12-08 2011-11-11 Hochstrom-steckverbinder

Country Status (4)

Country Link
EP (1) EP2649684B1 (zh)
CN (1) CN103181032B (zh)
DE (1) DE102010062580A1 (zh)
WO (1) WO2012076101A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011085700A1 (de) * 2011-11-03 2013-05-08 Bayerische Motoren Werke Aktiengesellschaft Hochstrom-Steckverbinder für Kraftfahrzeuganwendungen
DE102011120235B4 (de) * 2011-12-05 2013-09-05 Audi Ag Verbindungsanordnung und Verfahren zumVerbinden zweier Leitungselemente
DE202017106590U1 (de) * 2017-10-30 2019-01-31 Wago Verwaltungsgesellschaft Mbh Leiteranschlussklemme und Kontakteinsatz
DE102019131486B4 (de) * 2019-11-21 2021-06-10 Ford Global Technologies Llc Elektrische Kontaktanordnung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2364356A1 (de) * 1973-12-22 1975-07-03 Multi Contact Ag Verbindungseinrichtung zum verbinden elektrischer leiter

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2243034C2 (de) * 1972-09-01 1974-09-19 Multi-Contact Ag, Basel (Schweiz) Elektrische Kontaktanordnung
GB1469020A (en) * 1974-11-22 1977-03-30 Multilam Corp Electrical connector with standoff means
CH589946A5 (en) * 1975-03-07 1977-07-29 Sotax Ag Connector for busbars with corrugated contact surfaces - are either on plates or in hole in cylindrical socket and with crests of corrugations in contact with busbars
CH590569A5 (zh) * 1975-10-27 1977-08-15 Sprecher & Schuh Ag
JPS581982Y2 (ja) * 1979-07-30 1983-01-13 東海電線株式会社 複合平型端子
US5611696A (en) * 1994-12-14 1997-03-18 International Business Machines Corporation High density and high current capacity pad-to-pad connector comprising of spring connector elements (SCE)
US5865638A (en) * 1995-12-21 1999-02-02 Alcoa Fujikura Ltd. Electrical connector
FR2790331B1 (fr) * 1999-02-25 2001-06-01 Peugeot Citroen Automobiles Sa Dispositif de raccordement electrique d'un conducteur sur une surface de contact
CN1901289A (zh) * 2006-06-28 2007-01-24 广州市格宁电气有限公司 大电流插接式电气连接方法及连接元件

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2364356A1 (de) * 1973-12-22 1975-07-03 Multi Contact Ag Verbindungseinrichtung zum verbinden elektrischer leiter

Also Published As

Publication number Publication date
WO2012076101A1 (de) 2012-06-14
DE102010062580A1 (de) 2012-06-14
EP2649684A1 (de) 2013-10-16
CN103181032A (zh) 2013-06-26
CN103181032B (zh) 2016-05-11

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