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WO2024213198A1 - Unité de connexion enfichable et dispositif d'entraînement électrique - Google Patents

Unité de connexion enfichable et dispositif d'entraînement électrique Download PDF

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Publication number
WO2024213198A1
WO2024213198A1 PCT/DE2024/100203 DE2024100203W WO2024213198A1 WO 2024213198 A1 WO2024213198 A1 WO 2024213198A1 DE 2024100203 W DE2024100203 W DE 2024100203W WO 2024213198 A1 WO2024213198 A1 WO 2024213198A1
Authority
WO
WIPO (PCT)
Prior art keywords
connection unit
plug connection
projection
receptacle
designed
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.)
Pending
Application number
PCT/DE2024/100203
Other languages
German (de)
English (en)
Inventor
Philipp Mattes
Florian Pickel
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of WO2024213198A1 publication Critical patent/WO2024213198A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

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
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/115—U-shaped sockets having inwardly bent legs, e.g. spade type
    • 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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/91—Coupling devices allowing relative movement between coupling parts, e.g. floating or self aligning

Definitions

  • the invention relates to a plug connection unit and an electric drive device which comprises at least one plug connection unit.
  • So-called E-axles are known from the prior art, which have an inverter and two electric rotary machines on an axle housing, and have pumps assigned to these electric rotary machines, with a plug connection unit being present for each electric rotary machine or pump in order to realize an electrical connection between the inverter and a respective pump while bypassing a respective electric rotary machine. Accordingly, the plug connection unit forms a so-called bypass.
  • Electrical contact elements of plug connection units can be designed as axially acting spring elements in order to compensate for manufacturing and/or joining tolerances.
  • the disadvantage of this, however, is that such spring elements can only partially allow or compensate for relative movement between the electrical contact elements, for example due to temperature, so that it cannot be ruled out that an interruption of the electrical connection may occur if a maximum permissible relative movement is exceeded.
  • the present invention is based on the object of providing a plug connection unit and an electrical drive device equipped with the plug connection unit, which enable a permanent electrical connection of contacts in a simple, cost-effective and assembly-friendly manner.
  • the invention relates to a plug connection unit, comprising at least one first electrical contact element designed as a projection and at least one second electrical contact element designed as a receptacle for the projection, which are designed to realize an electrically conductive connection and a mechanical fastening of the projection in the receptacle at least along a first translational degree of freedom of the projection along its insertion direction into the receptacle when the projection is arranged in the receptacle. It is provided that at least one of the two contact elements comprises a compensation device for enabling relative movements of sections of this contact element along the first translational degree of freedom, which has a lower tensile stiffness than the connection stiffness of the realized mechanical fastening of the projection in the receptacle.
  • the holder is used to insert the projection.
  • connection stiffness mentioned is a stiffness against an unintentional relative movement between the projection and the receptacle, which carries the risk of the mechanical connection being broken and thus also of the electrically conductive connection being interrupted.
  • connection stiffness can also be assumed to be the tensile stiffness if the two mechanical contact elements are considered as an ideal body.
  • the stiffnesses mentioned are intended to characterize the resistance to an elastic relative movement of elements of the compensation device or between the contact elements. In an alternative embodiment, the stiffnesses mentioned characterize the resistance to a relative movement of elements of the compensation device or between the contact elements, which leads to a plastic deformation.
  • the compensation device has a lower rigidity under tension and/or pressure and is therefore more easily deformable along the first translational degree of freedom than the mechanical fastening of the projection in the receptacle, so that when a force is introduced into the plug connection unit along the first translational degree of freedom into the two contact elements, an elastic deformation of the compensation device initially occurs before an elastic deformation occurs in the mechanical fastening or in the receptacle and/or the projection.
  • the compensation device and the mechanical fastening can also be designed in such a way that when a force is introduced into the plug connection unit along the first translational degree of freedom in the two contact elements, a plastic deformation of the compensation device occurs before a plastic deformation occurs in the mechanical fastening or in the receptacle and/or the projection.
  • the compensation device and the mechanical fastening can also be designed in such a way that when a force is introduced into the plug connection unit along the first translational degree of freedom in the two contact elements, a plastic deformation of the compensation device occurs before an elastic deformation occurs in the mechanical fastening or in the receptacle and/or the projection.
  • An elastic or plastic deformation in the mechanical fastening refers to the projection and/or to a contact element enclosed by the receptacle, which serves to engage the projection in order to form an electrical contact and a mechanical fixation there.
  • the compensation device and the mechanical fastening can be designed in such a way that when a force is introduced into the plug connection unit along the first translational degree of freedom in the two contact elements, an elastic deformation of the compensation device occurs before the mechanical fastening between the receptacle and the projection is released.
  • the compensation device and the mechanical fastening can be designed in such a way that when a force is introduced into the plug connection unit along the first translational degree of freedom into the two contact elements, a plastic deformation of the compensation device occurs before the mechanical fastening between the receptacle and the projection is released.
  • a dissolution of the mechanical fastening between the holder and the projection can also be understood as a sliding of the projection in the holder.
  • the plug connection unit is designed in such a way that a relative movement, which can occur, for example, due to different thermal expansion coefficients of the materials used, is compensated for by the compensation device before there is a movement between the projection and the receptacle and, as a result, possibly a dissolution of the electrically conductive connection.
  • the receptacle has at least one elastically effective contact element for contact with the projection.
  • This contact element or these contact elements are designed to contact the projection with elastic deformation and application of a corresponding pressure force to the projection in order to bring about the electrical contact and mechanical fixation.
  • the contact element can run at an acute angle to the axis of the first translational degree of freedom. This embodiment or angle can occur in particular when the projection has not yet been placed in the holder, i.e. when the holder is undeformed.
  • the latter By elastically deforming the contact element and/or a fastening region of the contact element, the latter can be moved by inserting the projection into the receptacle in such a way that it rests against the projection under elastic prestress.
  • the plug-in connection unit allows for a compensation of joining tolerances by means of different insertion depths of the projection in the receptacle.
  • At least one of the contact elements is designed to bear against the projection with a surface contact.
  • An alternative embodiment provides that at least one of the contact elements is designed to bear against the projection with an edge contact.
  • the mechanical fastening is implemented by placing a contact surface of at least one contact element on the projection, without deformation of the projection.
  • the mechanical fastening is implemented by placing an edge between two contact surfaces of at least one contact element running at an angle to one another on the projection, with deformation of the projection due to the wedge effect on the projection created by the edge. A component of the direction of extension of the edge runs along the first translational degree of freedom.
  • the edge is used to cut into the projection, with a corresponding deformation or partial separation of the projection.
  • the compensation device may have at least one section of reduced bending stiffness, which provides the compensation device with the reduced tensile stiffness
  • This section of reduced bending stiffness means that when a tensile load is introduced into the contact element equipped with the compensation device, a bending in the section of reduced bending stiffness occurs in an elastic or plastic manner before an elastic or plastic deformation in the mechanical fastening or a dissolution of the mechanical fastening between the receptacle and the projection occurs.
  • the section of reduced flexural rigidity can comprise a meandering or S-shaped bending element, wherein the longitudinal direction of the formed meander shape runs essentially along the first translational degree of freedom or along the insertion direction.
  • a pressure element can be arranged on at least one of two side edges of the meandering bending element that are opposite one another along the first translational degree of freedom, for contact with the respective opposite side edge in the event of a pressure load on the bending element in the direction of the respective other contact element.
  • a respective pressure element can be regarded as a component of the side edge on which it is arranged.
  • the pressure element can be spaced apart from the opposite side edge and only come into contact with the opposite side edge when a certain pressure on the bending element is exceeded.
  • a pressure element can be designed as a projection from the respective side edge.
  • the pressure element is designed to come into contact with the opposite side when pressure is applied to the bending element or the contact element equipped with it, thus ensuring the transfer of the pressure load in a form-fitting manner without having to deform the flexible bending element to any great extent.
  • the bending element is thus equipped with a high pressure stiffness, which, however, has no influence on the still has low bending stiffness and therefore tensile stiffness under tensile load. This also results in only minimal springback during assembly.
  • the plug connection unit can have several of the first electrical contact elements and second electrical contact elements that can be plugged into one another.
  • the connections of the first electrical contact elements and the second electrical contact elements can be arranged parallel to one another.
  • a further aspect of the present invention is an electric drive device that has at least one described plug connection unit.
  • the electric drive device can be, for example, a so-called E-axle that has an inverter and two electric rotary machines on an axle housing, and has pumps associated with these electric rotary machines, wherein a described plug connection unit can be present for each electric rotary machine or pump in order to realize an electrical connection between the inverter and a respective pump while bypassing a respective electric rotary machine. Accordingly, the plug connection unit can form a so-called bypass.
  • Figure 3 a second enlarged partial area of the plug connection unit in sectional view
  • Figure 4 a plug connection unit in assembled state.
  • the plug connection unit 1 comprises as a first electrical contact element 10 a pin-shaped projection 11 which extends out of a housing 12 of the first electrical contact element.
  • the plug connection unit 1 comprises a second electrical contact element 20 in the form of a receptacle 21, which is arranged within a housing 26 of the second electrical contact element.
  • the receptacle 21 comprises two contact elements 22, which rest elastically on the projection 11 on both sides with respective fastening areas 23.
  • the projection 11 can be inserted into the receptacle 21 along the insertion direction 41.
  • the latter On the side of the second electrical contact element 20 facing away from the contact elements 22, the latter comprises a compensation device 50 which, in the embodiment shown here, is characterized by a section of reduced bending stiffness 51 This section of reduced bending stiffness 51 is designed by an S-shape or meander shape of the material of a bending element 52 of the second electrical contact element 20.
  • the compensation device 50 has a lower tensile stiffness than the connection stiffness of the realized mechanical fastening of the projection 11 in the receptacle 21, so that when an axial force acts on the two electrical contact elements 10, 20, a deformation of the compensation device 50 occurs rather than a release of the mechanical fixation of the projection 11 in the receptacle 21 and consequently a relative movement between the projection 11 and the receptacle 21 along the first translational degree of freedom 40. This ensures, among other things, that in the event of temperature-related displacement of individual components of the plug connection unit 1, the electrical contact between the projection 11 and the receptacle 21 does not come loose.
  • the deformation of the compensation device 50 enables a relative movement 70 between the contact elements 22 and a line section 60 connected to the contact elements 22 via the bending element 52.
  • Figures 2 and 3 show different sections of the second electrical contact element 20.
  • Figure 2 shows an enlarged view of an embodiment of the realization of the electrical contact between the fastening regions 23 of the contact elements 22 and the projection 11 and thus also the mechanical fixation of the projection 11.
  • the fastening areas 23, which are designed as resilient legs of the contact elements 22, have contact surfaces 24 which extend at an angle to one another and which form an edge 25 between them which cuts into the surface of the projection 11. Accordingly, the projection 11 is deformed here due to a wedge effect on the projection 11 caused by the contact surfaces 24 or their edge 25. This deformation leads to an enlargement of the contact area of the projection 11 in the receptacle 21, as well as to an increase in the connection strength between the projection 11 and the receptacle 21.
  • Figure 3 shows an enlarged view of a portion of the compensation device 50, namely here two opposing side edges 53 of the bending element 52, on each of which a pressure element 54 is arranged facing each other. It can be seen that the distance between opposing pressure elements 54 is smaller than the distance between opposing side edges 53.
  • the pressure elements 54 make it possible for the pressure elements 54 to come into contact with one another when a high pressure force is introduced into the plug connection unit 1 along the insertion direction 41, as shown in Figure 1, and thus to be able to transmit the pressure force without causing a strong deformation of the section of reduced bending stiffness 51 and thus overloading it.
  • FIG 4 shows the arrangement of the plug connection unit 1 on an electrical device, such as a so-called electric axle for a motor vehicle driven by an electric motor.
  • the plug connection unit 1 has a total of seven first electrical contact elements 10 and second electrical contact elements 20 connected in parallel, which electrically contact each other in the manner described.
  • the second electrical contact elements 20 lead into a circuit board 90 of a plug 80, via which the electrical device shown is electrically connected.
  • a so-called bypass on an electric axle can be realized using the plug connection unit 1.
  • the plug connection unit proposed here and the electrical drive device equipped with it provide solutions that enable a permanent electrical connection of contacts and thus the operation of the electrical drive device in a simple, cost-effective and easy-to-install manner.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

L'invention concerne une unité de connexion enfichable et un dispositif d'entraînement électrique qui comprend au moins une unité de connexion enfichable. L'unité de connexion enfichable (1) comprend au moins un premier élément de contact électrique (10) qui est réalisé sous la forme d'une saillie (11) et au moins un second élément de contact électrique (20) qui est conçu comme une zone de réception (21) pour la saillie (11), lesdits éléments de contact étant conçus pour établir une connexion électriquement conductrice et produire une fixation mécanique de la saillie (11) dans la zone de réception (21) au moins le long d'un premier degré de liberté de translation (40) de la saillie le long de sa direction d'enfichage (41) dans la zone de réception (21) lorsque la saillie (11) est disposée dans la zone de réception (21). Grâce à l'unité de connexion enfichable proposée et au dispositif d'entraînement électrique équipé de celle-ci, l'invention concerne des solutions qui permettent une connexion électrique permanente de contacts, et ainsi le fonctionnement du dispositif d'entraînement électrique, d'une manière plus simple et moins coûteuse et avec une installation plus facile.
PCT/DE2024/100203 2023-04-13 2024-03-14 Unité de connexion enfichable et dispositif d'entraînement électrique Pending WO2024213198A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023109273.1A DE102023109273B4 (de) 2023-04-13 2023-04-13 Steckverbindungseinheit und elektrische Antriebseinrichtung
DE102023109273.1 2023-04-13

Publications (1)

Publication Number Publication Date
WO2024213198A1 true WO2024213198A1 (fr) 2024-10-17

Family

ID=90458626

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2024/100203 Pending WO2024213198A1 (fr) 2023-04-13 2024-03-14 Unité de connexion enfichable et dispositif d'entraînement électrique

Country Status (2)

Country Link
DE (1) DE102023109273B4 (fr)
WO (1) WO2024213198A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648277A1 (de) * 1996-11-21 1998-05-28 Whitaker Corp Elektrische Anschlußklemme
DE19828983A1 (de) * 1997-06-30 1999-01-07 Whitaker Corp Elektrisches Anschlußteil
WO2012116043A1 (fr) * 2011-02-25 2012-08-30 Magna Electronics Inc. Caméra de véhicule dotée d'éléments de logement alignés et d'une connexion électrique entre les éléments de logement alignés
DE102017115137A1 (de) * 2017-07-06 2019-01-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kontaktschieneneinrichtung für ein wenigstens teilweise elektrisch angetriebenes Fahrzeug
DE102018009921A1 (de) * 2018-12-17 2020-06-18 Leopold Kostal Gmbh & Co. Kg Flachsteckverbinderanordnung und Flachkontakt für die Flachsteckverbinderanordnung
WO2020239666A1 (fr) * 2019-05-29 2020-12-03 Melecs Ews Gmbh Broche de contact, plaque de support et machine électrique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3016164B2 (ja) * 1991-06-19 2000-03-06 日本エー・エム・ピー株式会社 可動型コネクタ
DE102016112759B4 (de) * 2016-07-12 2023-10-05 Lisa Dräxlmaier GmbH Kontaktierungsvorrichtung zum verbinden von zumindest zwei komponenten und verbindungsanordnung
DE102021120751B4 (de) * 2021-08-10 2025-03-13 Schaeffler Technologies AG & Co. KG Multifunktionale Vorrichtung zum Einhalten von Luft- und Kriechstrecken zwischen elektrisch leitenden Elementen einer Hochvolt-Verbindungsvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648277A1 (de) * 1996-11-21 1998-05-28 Whitaker Corp Elektrische Anschlußklemme
DE19828983A1 (de) * 1997-06-30 1999-01-07 Whitaker Corp Elektrisches Anschlußteil
WO2012116043A1 (fr) * 2011-02-25 2012-08-30 Magna Electronics Inc. Caméra de véhicule dotée d'éléments de logement alignés et d'une connexion électrique entre les éléments de logement alignés
DE102017115137A1 (de) * 2017-07-06 2019-01-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kontaktschieneneinrichtung für ein wenigstens teilweise elektrisch angetriebenes Fahrzeug
DE102018009921A1 (de) * 2018-12-17 2020-06-18 Leopold Kostal Gmbh & Co. Kg Flachsteckverbinderanordnung und Flachkontakt für die Flachsteckverbinderanordnung
WO2020239666A1 (fr) * 2019-05-29 2020-12-03 Melecs Ews Gmbh Broche de contact, plaque de support et machine électrique

Also Published As

Publication number Publication date
DE102023109273B4 (de) 2025-09-11
DE102023109273A1 (de) 2024-10-17

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