WO2020089011A1 - Couvercle de carter conçu pour un moteur électrique et procédé de production d'un couvercle de carter - Google Patents

Couvercle de carter conçu pour un moteur électrique et procédé de production d'un couvercle de carter Download PDF

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Publication number
WO2020089011A1
WO2020089011A1 PCT/EP2019/078871 EP2019078871W WO2020089011A1 WO 2020089011 A1 WO2020089011 A1 WO 2020089011A1 EP 2019078871 W EP2019078871 W EP 2019078871W WO 2020089011 A1 WO2020089011 A1 WO 2020089011A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing cover
stator
housing
electrical
connection
Prior art date
Application number
PCT/EP2019/078871
Other languages
German (de)
English (en)
Inventor
Ralph Guehrer
Manfred Zimmer
Sebastian Baumgart
Christian Brückner
Original Assignee
Zf Friedrichshafen 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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2020089011A1 publication Critical patent/WO2020089011A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K24/00—Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21—Devices for sensing speed or position, or actuated thereby
    • H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements

Definitions

  • the present invention relates to a housing cover for an electrical machine with a stator of a rotor position sensor integrated in the housing cover and a method for producing such a housing cover.
  • a rotor position sensor serves as an electromagnetic transmitter for converting an angular position of a rotor into an electrical variable.
  • stator windings of the rotor position sensor are arranged in a cylindrical housing of a rotor position sensor.
  • An angular position of the rotor, which is accommodated in the housing, can be determined by evaluating voltage signals on the stator windings.
  • a motor with a rotor and a rotor control is known from JP 2009 126 189 (A).
  • the rotor is covered by a cover that is screwed to the housing.
  • a drive system with an electrical machine and a transmission wherein a transmitter of the electrical machine is arranged on a drive side of the electrical machine.
  • the encoder has an encoder stator and an encoder rotor, which are concealed in a gear housing.
  • the encoder stator can be electrically contacted using an additional contact element.
  • the object of the invention is therefore to provide a concept which simplifies contacting electrical connections of a stator of a rotor position sensor which is concealed in an assembled state.
  • a housing cover for an electrical machine in particular an electrical machine of a motor vehicle, is provided.
  • the housing cover comprises a stator of a rotor position sensor integrated in the housing cover for detecting an angular position of a rotor of the electrical machine.
  • the cover according to the invention for the machine housing further comprises an electrical plug connector or an electrical plug contact element integrated in the housing cover.
  • the plug connection is designed to enable electrical contacting of the stator on the housing cover by means of a plug contact.
  • the plug connection can provide a plug receptacle or socket, the electrical contacts of which are each connected to connections of the stator.
  • the connection can be realized by means of electrical conductors integrated in the housing cover, which are guided through a housing or on the housing of the housing cover, so that the mounted housing cover can cover, for example, the rotor and the stator of the rotor position sensor and thereby enable an external connection possibility to the stator of the rotor position sensor .
  • the housing cover has, for example, an opening on a front for receiving a rotor of the electrical machine.
  • the back of the cover on the other hand, can be closed, so that the rotor is completely enclosed when the housing cover is installed and is sealed by the housing cover.
  • the plug connection can be provided on the back of the housing cover, so that it is accessible even when the housing cover is installed and the stator of the rotor position sensor can be easily contacted.
  • the integrated housing cover offers the advantage of simultaneously allowing hermetic closure of the rotor position sensor and electrical contacting of the stator connections.
  • the rotor and stator can be covered, for example, oil-tight.
  • the housing cover can be adapted to different rotor position sensor stators and / or plug contacts by different designs of the plug connection and can thus be used in a variety of ways.
  • the plug connection allows a quick and easy contact of the stator for rotor position measurement with a reliable connection.
  • electrical contacts of the integrated plug connection are formed by electrical conductors integrated in the housing cover, which are electrically connected to the respective electrical connections of the stator.
  • the electrical conductors extend from the stator to the plug connection. Electrical contact surfaces of the integrated plug contact element and / or the electrical conductor's, which lead through the housing cover or a housing part of the stator device provided to at least one stator winding of the stator, are electrically connected to the stator winding.
  • a number of electrical conductors integrated in the housing cover is selected depending on the number of stator windings present. With three stator windings, for example six electrical conductors can be guided in the housing to the plug connection.
  • the shape of the plug connection can be adapted according to the number of existing electrical conductors and / or a predetermined plug shape of a plug that is to be used with the plug connection.
  • an integrated electrical conductor comprises a lead frame.
  • the advantage of using leadframes can be simple manufacture, low costs and / or dimensional stability when producing the housing cover by overmolding the leadframes in an injection molding process.
  • the integrated electrical conductors can each comprise a metal strip and be arranged next to one another.
  • the lead frame can be bent, for example, so that the plug connection can be provided in different positions or with different orientations in the housing cover.
  • the electrical conductors can comprise cables or other electrically conductive structures.
  • an electrical connection of a respective electrical conductor is carried out on a respective electrical connection of the stator by means of a welded connection or a soldered connection.
  • electrical contacting of a respective electrical conductor can be carried out on a respective electrical connection by means of a plug connection or clamp connection.
  • the electrical conductors can be contacted with the stator windings by means of insulation displacement terminals.
  • the type of contacting of the electrical conductors with the connections of the stator can depend on the type of connections provided by the stator and can be selected individually.
  • electrical contacts of the integrated electrical plug connection are formed by respective electrical connections of the stator, which are guided in and / or on the housing cover from the stator to the plug connection.
  • the end regions of the stator windings that are led out of the stator can be integrated molded in the housing.
  • the housing cover has a first side, e.g. the front, an opening for receiving the rotor and is arranged on a second side, which is remote from the first side, e.g. the back, closed design.
  • the plug connection is e.g. formed on the second side of the housing cover. This makes the plug-in connection in the assembled state, with the front facing the machine housing, particularly easy to reach.
  • the stator protrudes axially out of a housing part of the housing cover on one side of the housing cover, on which the opening for receiving the rotor of the electrical machine is formed in the housing cover.
  • the stator around the rotor can be described by a coaxial arrangement of the stator and the rotor or by collinearly arranged axes of symmetry or rotation of the stator and the rotor.
  • the axial projection is formed by a stator lamination stack of the stator or its housing protruding from the housing of the housing cover.
  • the axial protrusion is attached to an axial recess formed around a rotor of the electrical machine on a housing end face of the electrical machine, e.g. at least partially adapted positively.
  • the axial protrusion can, for example, in addition to centering the stator also cause a predetermined angular position of the stator relative to the housing of the electrical machine due to a shape in a circumferential section.
  • the present invention thus provides a cover with an integrated electrical interface or plug or plug connection for a rotor position sensor e.g. ready for an electrical machine.
  • a cover or housing cover is used to attach the stator of the rotor position sensor to a housing e.g. an electrically driven axis is provided.
  • the invention provides a method for producing a housing cover for a machine housing of an electrical machine.
  • the method comprises producing a first housing section for receiving a stator of a rotor position sensor and producing a second housing section by overmolding to at least one electrical conductor in an injection molding process.
  • the first and second housing sections are arranged such that a first end of the at least one electrical conductor for contacting the stator protrudes from the first housing section into the second housing section and a second end of the at least one electrical conductor is an electrical contact from outside the Housing cover accessible plug connection for external contact animals of the stator by means of plug contact forms.
  • the method can be carried out in two stages, with the first housing section first or the connector housing by the extrusion coating of the electrical conductors, for example the lead frame is manufactured.
  • the second housing section or the stator housing of the rotor position sensor or housing cover can then be injection molded onto the plug housing.
  • the stator is then attached to the stator housing and the stator connections are contacted.
  • the first housing section and the second housing section are produced in a common injection molding process.
  • the advantage can be a shorter manufacturing time and / or a more stable housing cover.
  • the common injection molding process is a one-piece design of the integrated cover or housing cover.
  • the electrical conductors, e.g. Punched grids can be inserted into a mold and overmolded, the housing part for receiving the stator of the housing cover being formed at the same time.
  • the integral cover formed according to the method has e.g. overmolded lead frames, which can be contacted on the one hand with further supply connections and on the other hand with the stator connections.
  • the stator-side connection points of the lead frames protrude in the axial direction from the second housing section and into the first housing section in order to be contacted with the stator connections.
  • the stator of the rotor position sensor can be attached to the stator housing or integrated cover via a press fit or press fit before or after contacting.
  • the stator connections and the lead frames can generally be contacted by means of insulation displacement terminals or by means of a welded connection.
  • a production with a common overmolding process can also take place in that not only the lead frame, but also the stator (or the stator laminated core) is accommodated in the tool, and not only the cover with integrated lead frame is formed during the overmolding process, but also the stator is overmolded.
  • the contacting of the stator connections and the lead frame can in turn take place before or after the overmolding process. For example, this enables a particularly stable connection of the stator to the stator housing.
  • the method can be used to form a cover with an integrated lead frame, the lead frame for direct contacting with the stator Conclusions are provided.
  • the rotor position sensor or its stator can be attached directly to a housing, for example an electrically driven axis.
  • the invention further relates to an electrical machine with a rotor position sensor, which comprises a housing cover according to the invention, in which a stator of the rotor position sensor is provided.
  • a stator of the rotor position sensor is provided.
  • An oil-tight feed-through between the plug connection of the housing cover (e.g. a lead frame) and the cover is ensured by overmolding the plug connection or electrical conductor.
  • the rotor of the machine can thus be hermetically sealed and the stator of the rotor position sensor can nevertheless be simply electrically contacted.
  • the electric machine can be provided in a drive system of an electric motor vehicle.
  • Fig. 1 a, b an embodiment of a housing cover with integrated plug connection and contacting by means of insulation displacement devices
  • Fig. 2a, b an embodiment of a housing cover with an integrated plug connection and a contact by means of a welded connection;
  • Fig. 3 shows a schematic section of an electrical machine with a mounted housing cover.
  • 1 a shows an exemplary embodiment of a housing cover 10 or integrated cover with a stator 11 and an integrated plug connection 14 in a perspective view.
  • the stator 1 1 of a rotor position sensor is at least partially accommodated in a housing 13 of the housing cover 10.
  • the stator 11 is a first housing section 13a, for example a stator housing, which is formed adjacent to a second housing section 13b, for example a connector housing, in which the integrated connector 14 is provided. Electrical connections of the stator 1 1 are electrically connected to external connections at a contact point 12.
  • the first housing section 13a has, as fastening means, four recesses arranged around the stator for receiving screws, which enable screwing to a housing of an electrically driven axle or another component.
  • a groove is also formed around the stator 11, in which a seal 21 is received.
  • the plug connector 14 is shown in more detail.
  • the plug connection 14 has electrical contacts 15 which are contacted with stator connections 17 via electrical conductors 16.
  • the stator connections 17 are e.g. provides at the contact point 12.
  • the plug connection 14 can be designed as a socket that can accommodate a plug.
  • An output of the socket has e.g. with respect to an axis of the stator radially inwards, so that a plug can be inserted to save space.
  • the plug can be secured in the inserted state by means of a screw fastening and / or a clamp fastening 14a of the plug connection 14.
  • FIG. 1 a, b shows contacting of the rotor position sensor stator 11 via its connections 17 with the electrical conductor 16 and the plug or plug connection 14 by means of a clamp connection 18, for example using insulation displacement terminals.
  • the electrical conductors can be overmolded insulated cables which are inserted into insulation-piercing terminals of the stator at a first conductor end 16a in the stator housing. are clamped and are stripped at a second conductor end 16b in the plug connection in order to provide the electrical contacts 15 of the plug connection 14.
  • Fig. 2a shows an embodiment of a housing cover 10 with integrated plug connection 14 and an alternative contacting of the stator connections 17 with the electrical conductor, which is designed as a lead frame 16c, by means of a welded joint 19 in perspective view.
  • the stator connections 17 can be designed as metal pins or metal conductor pieces on the stator 11 located radially outside.
  • the electrical conductor or lead frame 16c are welded to the stator connections at the first conductor end 16a.
  • Fig. 2b shows the housing cover from Fig. 2a in a schematic side view. It can be seen that the electrical conductor 16 projects into the stator housing 13a with its first end 16a and serves as electrical contact 15 of the plug connection 14 at its second end 16b. 2b also shows that the stator 11 protrudes axially opposite the housing 13 and thereby forms an axial protrusion 20. This water is designed to effect self-centering of the stator 11 by a positive connection with an axial recess in a machine housing in order to accommodate a rotor accommodated in the machine housing.
  • FIG. 3 shows a schematic section of an electrical machine 30 with a mounted housing cover 10.
  • the electrical machine 30 has a housing 31, in which a rotor 33 mounted by means of a ball bearing 32 is received. An end region 33a of the rotor 33 with a rotor winding is arranged centered in the stator 11 of the housing cover 10.
  • the axial protrusion 20 of the housing cover is received in an axial recess 34 of the housing 31 of the electrical machine 30 formed around the rotor 33.
  • the housing cover 10 is fastened with fastening means 35, for example screws, and the fastening means of the housing cover 10 to the housing 31 of the machine, so that the end region 33a of the rotor 33 is completely enclosed by the housing cover 10 and the housing 31.
  • stator 1 1 can be in the assembled state of the housing cover 10, as shown in Fig. 3, for example by means of the plug contact element 14 can be contacted.
  • the housing cover is a highly integrated solution consisting of the rotor position sensor stator, lead frame and cover with seal and offers an oil-tight, cost-effective solution with few components is connected via internal electrical conductors in the housing cover.
  • a contact plug can be connected to the electrical plug contact element in order to contact the covered stator.
  • the axial projection can ensure an arrangement of the stator centered with respect to the rotor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

L'invention concerne un couvercle de carter (10) conçu pour un moteur électrique (30). Ce couvercle de carter comprend, intégré dans ledit couvercle de carter (10), un stator (11) d'un capteur de position de rotor conçu pour détecter une position angulaire d'un rotor (33) du moteur électrique (30), et comprend en outre, intégré dans le couvercle de carter (10), un branchement enfichable (14) électrique. Ce branchement enfichable (14) est conçu pour permettre un contact électrique du stator (11), au niveau du couvercle de carter (10), au moyen d'un contact par enfichage. Cette invention concerne en outre un procédé pour produire un couvercle de carter (10). Ce procédé consiste à produire une première partie de carter (13a) du couvercle de carter (10) et une deuxième partie de carter (13b) qui comporte un branchement enfichable (14).
PCT/EP2019/078871 2018-10-30 2019-10-23 Couvercle de carter conçu pour un moteur électrique et procédé de production d'un couvercle de carter WO2020089011A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018218527.1 2018-10-30
DE102018218527.1A DE102018218527A1 (de) 2018-10-30 2018-10-30 Gehäusedeckel für eine elektrische Maschine und Verfahren zum Herstellen eines Gehäusedeckels

Publications (1)

Publication Number Publication Date
WO2020089011A1 true WO2020089011A1 (fr) 2020-05-07

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PCT/EP2019/078871 WO2020089011A1 (fr) 2018-10-30 2019-10-23 Couvercle de carter conçu pour un moteur électrique et procédé de production d'un couvercle de carter

Country Status (2)

Country Link
DE (1) DE102018218527A1 (fr)
WO (1) WO2020089011A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11162537B2 (en) * 2019-07-16 2021-11-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Bearing cover

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20219021U1 (de) * 2002-12-06 2004-04-22 Stocko Contact Gmbh & Co. Kg Kontaktelement
DE102005017063A1 (de) * 2004-04-14 2005-11-17 Mitsubishi Denki K.K. Resolver
JP2009126189A (ja) 2007-11-19 2009-06-11 Mazda Motor Corp 車両のホイール駆動装置
JP2009133632A (ja) * 2007-11-28 2009-06-18 Tamagawa Seiki Co Ltd レゾルバカバー構造
US20140091682A1 (en) * 2011-08-08 2014-04-03 Mitsubishi Electric Corporation Controller-integrated electric rotating machine and assembling and disassembling methods of the same
DE102015217875A1 (de) 2015-09-17 2017-03-23 Siemens Aktiengesellschaft Antriebssystem mit einer elektrischen Maschine und einem Getriebe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20219021U1 (de) * 2002-12-06 2004-04-22 Stocko Contact Gmbh & Co. Kg Kontaktelement
DE102005017063A1 (de) * 2004-04-14 2005-11-17 Mitsubishi Denki K.K. Resolver
JP2009126189A (ja) 2007-11-19 2009-06-11 Mazda Motor Corp 車両のホイール駆動装置
JP2009133632A (ja) * 2007-11-28 2009-06-18 Tamagawa Seiki Co Ltd レゾルバカバー構造
US20140091682A1 (en) * 2011-08-08 2014-04-03 Mitsubishi Electric Corporation Controller-integrated electric rotating machine and assembling and disassembling methods of the same
DE102015217875A1 (de) 2015-09-17 2017-03-23 Siemens Aktiengesellschaft Antriebssystem mit einer elektrischen Maschine und einem Getriebe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11162537B2 (en) * 2019-07-16 2021-11-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Bearing cover

Also Published As

Publication number Publication date
DE102018218527A1 (de) 2020-04-30

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