WO2022128600A1 - Module de détection pour un dispositif de propulsion électrique, dispositif de propulsion électrique pour un véhicule et procédé de fabrication d'un module de détection - Google Patents

Module de détection pour un dispositif de propulsion électrique, dispositif de propulsion électrique pour un véhicule et procédé de fabrication d'un module de détection Download PDF

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Publication number
WO2022128600A1
WO2022128600A1 PCT/EP2021/084494 EP2021084494W WO2022128600A1 WO 2022128600 A1 WO2022128600 A1 WO 2022128600A1 EP 2021084494 W EP2021084494 W EP 2021084494W WO 2022128600 A1 WO2022128600 A1 WO 2022128600A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier part
drive device
sensor
connection structure
cover
Prior art date
Application number
PCT/EP2021/084494
Other languages
German (de)
English (en)
Inventor
Philipp Breinlinger
Joachim SCHENKER
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2022128600A1 publication Critical patent/WO2022128600A1/fr

Links

Classifications

    • 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
    • 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

  • Sensor assembly for an electric drive device electric drive device for a vehicle and method for manufacturing a sensor assembly
  • the present invention relates to a sensor assembly for an electric drive device for a vehicle, an electric drive device for a vehicle and a method for producing a sensor assembly.
  • Electric drive devices for vehicles typically have an electric machine housed in a housing, which can often be operated as a motor and as a generator. In order to regulate the electric machine during operation, data about the current operating state of the electric machine, in particular its speed, is usually recorded. For this purpose, speed sensors are typically used, which are often installed inside the housing. In order to replace the speed sensor or other sensors, a relatively extensive dismantling of the drive device is usually required.
  • DE 10 2016 203 560 A1 discloses a sensor module for an actuator with a displaceable armature, which has a carrier plate with a plug arranged on an upper side and a sensor arranged on an underside for detecting an armature movement.
  • a sensor assembly having the features of claim 1 an electric drive device having the features of claim 9, and a method for producing a sensor assembly having the features of claim 11 are provided.
  • a sensor assembly for an electric drive device of a vehicle comprises a carrier part for detachable attachment to a recess of a cover of the drive device, the cover being arranged on one axial end of an electrical machine, a sensor device which has a speed sensor for detecting a speed of a rotor of the electrical machine and on a first Surface of the carrier part is arranged, and formed on a second surface of the carrier part electrical connection structure.
  • an electric drive device for a vehicle.
  • the electric drive device comprises an electric machine, which has a stator and a rotor mounted so as to be rotatable about an axis of rotation relative to the stator, a cover which is arranged at an axial end of the electric machine with respect to the axis of rotation and has a recess, and a sensor assembly according to the first aspect of the invention, wherein the support part is detachably connected to the cover and at least partially covers the recess, and wherein the first surface of the support part faces the rotor of the electrical machine.
  • a method of manufacturing a sensor assembly includes arranging the sensor device in a cavity of an injection mold and injection molding the carrier part and the connection structure by supplying molten casting material into the cavity, the carrier part being formed with a first connection structure which is formed into or around a second connection structure becomes.
  • One of the ideas on which the invention is based is to attach a sensor assembly in a simple, detachable manner to an axial cover of an electrical drive device for a vehicle, with an electrical machine, for example in the form of a three-phase synchronous machine, being arranged on a first side of the cover, and with the Sensor assembly mounted on an opposite thereto located second side of the cover, in particular is fixed.
  • the cover has a recess extending between the first and the second side, through which a sensor device of the sensor assembly can be positioned on the electrical machine, in particular in the region of the rotor of the electrical machine.
  • the sensor assembly comprises a flat, for example plate-shaped, carrier part with a first surface and a second surface located opposite thereto.
  • the sensor device which has at least one speed sensor and optionally other sensors such as a temperature sensor, is arranged on the first surface of the carrier part.
  • An electrical connection structure is formed on the second surface of the carrier part, which can in particular have a plurality of electrical contact structures which protrude from the first surface, extend through the carrier part and are electrically connected to the sensor device.
  • the first surface of the support part faces the electric machine and the sensor device is arranged in the recess of the cover.
  • the support part can, for example, be screwed to the cover or attached to it in a detachable manner in some other way.
  • An advantage of this design of the sensor assembly and the drive device is that the sensor assembly can be installed in a simple manner. Furthermore, the sensor assembly as a whole can be exchanged in a simple manner, for example in the event of service.
  • the arrangement of the connection structure on the second surface of the carrier part of the sensor assembly makes it accessible from the outside, in particular from the second side of the cover.
  • the electrical or signaling wiring of the drive device is thus simplified and a compact design of the drive device is possible.
  • the production of the sensor assembly is particularly simple and economical in an injection molding process.
  • the carrier part and the sensor device are permanently connected to one another. “Inseparable” is to be understood here in particular as meaning that the sensor device and the carrier part cannot be separated from one another without being destroyed, e.g. without breaking a material bond.
  • the carrier part and the sensor device thus form a firmly held assembly, which further facilitates the assembly of the sensor assembly.
  • the carrier part has at least one first connection structure on the first surface, which is connected to a second connection structure of the sensor device in a form-fitting and/or cohesive manner, the first connection structure being formed into and/or around the second connection structure .
  • the first connection structure can be designed in the form of a projection, which can be configured, for example, in the form of a column.
  • the second connection structure of the sensor device can be realized, for example, in the form of a recess.
  • the material of the carrier part, which forms the first connection structure encloses the second connection structure of the sensor device and/or fills it. In this way, the sensor device can be fastened to the carrier part in a simple and mechanically stable manner.
  • the carrier part can be produced in a simple manner in an injection molding process, with the second connection structure of the sensor device being overmoulded.
  • the speed sensor is designed as a resolver or as a Hall sensor or as a TMR sensor.
  • TMR is an abbreviation for the English expression “tunnel magnetoresistance”.
  • the sensor may be a tunneling magnetic resistance sensor.
  • the connection structure is designed as a socket for receiving a plug.
  • the connection structure can thus have a frame which is designed to receive a plug mechanically, in particular in a form-fitting manner.
  • the socket or the frame forming it protrudes from the second surface of the carrier part and surrounds the electrical contact structures. The provision of a plug-in socket further simplifies connection of the sensor device.
  • the carrier part has a projection that protrudes from the first surface and is designed to be inserted into the recess in the cover and to rest on an inner circumference of the recess in the cover.
  • the extension can be designed as a closed frame, which has an outer circumference that corresponds to the inner circumference of the recess of the cover.
  • the approach can be implemented as a closed ring. The positioning of the carrier part on the recess of the cover is facilitated by the approach. In addition, sealing the first side of the cover relative to the second side of the cover is simplified.
  • the carrier part has at least one flange section with a through-opening for receiving a fastening pin, such as a screw or a bolt.
  • the flange portion or flange portions may be formed on an outer periphery or generally in an edge area of the support part which overlaps an area of the cover surrounding the recess when the sensor assembly is arranged on the recess of the cover.
  • the sensor assembly can be releasably attached to the cover through the through-openings, for example by means of screws.
  • a first centering structure in the form of a projection or a recess is formed on the first surface of the carrier part, which is intended for engagement in a second centering structure of the cover formed in a complementary manner is.
  • the optional centering structure further facilitates positioning of the sensor assembly on the cover, particularly with respect to a rotational position about the axis of rotation.
  • the cover is formed by a base of a stator pot, in which the stator of the electrical machine is accommodated.
  • the stator pot can, for example, have a hollow-cylindrical section which is arranged coaxially to the axis of rotation and in which the stator is accommodated, the hollow-cylindrical section being closed at one axial end by a base.
  • the stator pot can optionally be accommodated in a housing, with the base of the stator pot being arranged in an opening in the housing. This ensures particularly easy accessibility of the sensor assembly.
  • FIG. 1 shows a schematic sectional view of an electric drive device according to an exemplary embodiment of the present invention
  • FIG. 2 shows a perspective view of an electric drive device according to an exemplary embodiment of the present invention
  • FIG. 3 shows a perspective view of a sensor assembly according to an exemplary embodiment of the present invention, looking in the direction of a first surface of a carrier part of the sensor assembly;
  • FIG. 4 shows a perspective view of the sensor assembly shown in FIG. 3 looking in the direction of a second surface of the carrier part;
  • FIG. 5 shows a schematic sectional view of an injection molding device during a method for producing a sensor assembly according to an embodiment of the present invention
  • FIG. 6 shows a schematic sectional view of the injection molding device shown in FIG. 5 during a further step of the method
  • FIG. 1 shows an example of a sectional view of an electric drive device 100 for a vehicle.
  • 2 shows the electric drive device 100 in a perspective view.
  • drive device 100 has an electric machine 2, a cover 3 and a sensor assembly 4.
  • a housing 1 can also be provided.
  • a control device 7 can also optionally be provided.
  • the electrical machine 2 is shown in Fig. 1 as an example in a sectional view and can be realized, for example, as a permanently excited synchronous machine. However, it is also conceivable that the electrical machine is implemented as an asynchronous machine.
  • the electrical machine 2 has a stator 20 and a rotor 21 .
  • the rotor 21 is rotatably mounted relative to the stator 20 about an axis of rotation A20 and can be arranged, for example, inside the stator 20 with respect to a radial direction R20 extending transversely to the axis of rotation A20, as shown in FIG.
  • the rotor 21 can, for example, be firmly connected to a rotor shaft 22, which in turn is rotatably mounted, as shown schematically in FIG.
  • the rotor shaft 22 can be kinematically coupled to a gearbox (not shown in Figs. 1 and 2), e.g. via a gear wheel 23.
  • the electric machine 2 can be accommodated in a stator pot 5 .
  • the stator pot 5 can have a hollow cylinder 51 which is arranged coaxially to the axis of rotation A20.
  • the stator pot 5 also has a base 50 which is arranged on an axial end of the hollow cylinder 51 and has a recess or opening 30 .
  • the opening 30 can optionally also be coaxial to the axis of rotation A20 be arranged.
  • the stator 20 can bear against an inner peripheral surface 51a of the hollow cylinder 51 .
  • a first surface 50a of the bottom 50 faces the electric machine 2, as shown in FIG. 1 by way of example.
  • the bottom 50 has a second surface 50b which is oriented opposite to the first surface 50a.
  • the optional housing 1 defines an interior space 10 in which the electric machine 2 is accommodated.
  • the transmission (not shown) can be accommodated in the housing 1 .
  • the housing 1 can have an axial opening 11 in which the base 50 of the stator pot 5 can be arranged.
  • the second surface 50b of the base 50 thus faces an outside or the surroundings.
  • the bottom 50 of the stator pot 5 thus forms a cover 3 which is arranged on an axial end 25 of the electrical machine 2 with respect to the axis of rotation A20.
  • a cover detachably connected to the housing 1 forms the cover 3 .
  • the optional control device 7 can, for example, have power electronics (not shown), which are accommodated in an electronics housing 70, with the electronics housing 70 being able to be arranged on the outside of the housing 1 in relation to the radial direction R20, as shown in Fig. 2 by way of example is.
  • the power electronics can have an inverter, for example, and is electrically connected to the electric machine 2 .
  • the power electronics can have an evaluation circuit (not shown) for evaluating sensor signals.
  • the control device 7 can have a sensor connection 71 via which an electrical connection to the evaluation circuit can be established.
  • the sensor assembly 4 is shown in Figs. 3 and 4 shown in detail.
  • the sensor assembly 4 has a carrier part 40, a sensor device 41 and a connection structure 42.
  • the carrier part 40 can be designed, for example, as a circular plate or generally as a flat component with a first surface 40a and a second surface 40b oriented opposite to this.
  • the carrier part 40 can in particular be formed from a plastic material, for example a thermoplastic material.
  • the support member 40 may optionally include a tab 44 protruding from the first surface 40a.
  • the extension 44 can be designed as a closed ring arranged in the edge area of the carrier part 40 .
  • the extension 44 can be realized as a closed frame, which has a circumferential shape corresponding to the inner circumference 31 of the recess 30 of the cover 30 .
  • the extension 44 can be formed in one piece with the carrier part 40, for example.
  • the support member 40 may include one or more flange portions 45. As shown in FIG. In the figs. 3 and 4, three flange sections 45 are shown purely by way of example. The flange portions 45 may, for example, protrude from an outer periphery of the support member 40 as shown in Figs. 3 and 4 is shown. However, it is generally provided that the flange sections 45 are arranged in the area of a peripheral edge of the carrier part 40 . As in Figs. 3 and 4, each flange portion 45 has a through opening 45A through which a fastening pin, e.g., in the form of a screw or bolt, can be passed.
  • a fastening pin e.g., in the form of a screw or bolt
  • the carrier part 40 can have a centering structure 46 which is formed on the first surface 40a.
  • the centering structure 46 may be a centering pin protruding from the first surface 40a of the support member 40, as shown in FIG. 3 by way of example.
  • the centering structure 46 is preferably arranged between the projection 44 and the peripheral edge of the carrier part 40, as shown in FIG. 3 by way of example.
  • a recess is provided as the centering structure 46 .
  • centering structure 46 of the support member 40 for engaging in a complementary second centering structure (not shown) of the cover 3 is formed.
  • the sensor device 41 can have one or more sensors for detecting various physical variables of the electrical machine 2 and/or for detecting environmental conditions prevailing in the housing 1 .
  • the sensor device 41 has at least one speed sensor 41A for detecting a speed of the rotor 21 of the electric machine 2 .
  • the sensor device 41 shown as an example in FIG. 3 has a speed sensor 41A implemented as a resolver.
  • the speed sensor 41A could also be in the form of a Hall sensor or a TMR sensor.
  • the sensor device 41 is arranged on the first surface 40a of the support part 40 .
  • the sensor device 41 can be arranged on the side of the first surface 40a but positioned at a distance from the first surface 40a.
  • the sensor device 41 is also attached to the carrier part 40 .
  • the sensor device 41 can be permanently connected to the carrier part 40 . This can include both a material connection and a form-fitting fixation.
  • the carrier part 40 can optionally have projections 43A on the first surface 40a , which can be realized, for example, in the form of a column and protrude from the first surface 40a .
  • the sensor device 41 can have corresponding recesses 41C, into which the columns or projections 43A of the carrier part 40 protrude and fill them in such a way that the sensor device 41 is permanently fastened to the carrier part 40 .
  • the projections 43A thus form a first connection structure 43 of the carrier part 40 and the recesses 41C of the sensor device 41 form a second connection structure 41B, the first connection structure 43 being formed into the second connection structure 41B.
  • the projections 43A of the carrier part 40 to enclose an edge area of the sensor device 41 .
  • the carrier part 40 has at least one first connection structure 43 which is positively and/or materially connected to a second connection structure 41B of the sensor device 41, wherein the first connection structure 43 is formed into and/or around the second connection structure 41B,
  • connection structure 42 is used for the electrical connection of the sensor device 41, e.g. in order to transmit measurement data recorded by the sensor device 41 to the control device 7.
  • the connection structure 42 is formed on the second surface 40b of the carrier part 40 .
  • the connection structure 42 can have a plurality of electrically conductive contact structures 42A, e.g. in the form of metal pins, as shown by way of example in Fig. 4, which protrude from the second surface 40b of the carrier part 40, through the carrier part 40 at least as far as the first surface 40a of the carrier part 40 and are electrically connected to the sensor device 41 .
  • connection structure 42 can be implemented as a socket 6 for receiving a plug (not shown).
  • the socket 6 can have a base plate 60 projecting transversely from the second surface 40b of the carrier part 40 and a frame 61 which extends from the base plate 60 .
  • the frame 61 defines a plug opening 62 into which the plug is insertable.
  • Contact structures 42A can, for example, protrude from the base plate 60 parallel to the second surface 40b of the carrier part 40 and be surrounded by the frame 61, as is shown in FIG. 4 purely by way of example.
  • the socket 6 can be designed in one piece with the carrier part 40 .
  • the sensor assembly 4 described above can, as shown in Figs. 1 and 2 shown as an example on the electric drive device 100 and on the cover 3 mounted. As in FIG. 1 in particular, the sensor assembly 4 is arranged in the area of the recess 30 of the cover 3 .
  • the carrier part 40 is detachably connected to the cover 3 .
  • the carrier part 40 can be screwed to the base 50 of the stator pot 5 by means of screws which are passed through the recesses 45A of the flange sections 45 .
  • the recess 30 of the cover 30 is at least partially, preferably completely, covered by the carrier part 40, such as this in the figs. 1 and 2 can be seen.
  • the first surface 40a of the carrier part 40 faces the rotor 21 of the electrical machine 2 .
  • the sensor device 41 is accommodated in the recess 30 of the cover 3 .
  • the optional projection 44 which is formed on the first surface 40a of the carrier part 40, rests against the inner circumference 31 of the recess 3, as is shown in FIG. 1 by way of example.
  • a connection cable 8 can be electrically connected to the connection structure 42 of the sensor assembly 4 and the sensor connection 71 of the optional control device 7 in order to electrically connect the sensor device 41 to the control device 7 for signal transmission.
  • the sensor device 41 is arranged in a cavity 203 of an injection mold 200 in a first step.
  • the contact structures 42A can already be electrically and mechanically connected to the sensor device 41 .
  • the injection mold 200 can have, for example, a first mold part 201 and a second mold part 202 that can be positioned opposite the first mold part 201, the cavity 203 being formed between the first and the second mold part 201, 202 when the first and the second mold part 201, 202 are arranged opposite each other, as shown in Fig. 5 by way of example.
  • the sensor device 41 can in particular have at least one second connection structure 41B, for example in the form of a recess or opening 41C, as is shown schematically in FIG.
  • additional mold cores 204 can be arranged in the cavity 203, so that a hollow space is formed in the cavity 203, the shape of which corresponds to the shape of the carrier part 40 to be formed and the connection structure 42 to be formed.
  • the carrier part 40 and the connection structure 42 are injection molded.
  • molten casting material M40 for example a thermoplastic
  • the carrier part 40 is thus formed with a first connection structure 43 which is formed into or around a second connection structure 41C.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)

Abstract

L'invention concerne un module de détection pour un dispositif de propulsion électrique d'un véhicule, comprenant : une partie de support destinée à être montée de manière amovible sur un évidement d'un élément de recouvrement du dispositif de propulsion, l'élément de recouvrement étant disposé à une extrémité axiale d'une machine électrique ; un dispositif de détection qui présente un capteur de vitesse de rotation destiné à détecter une vitesse de rotation d'un rotor de la machine électrique et qui est disposé sur une première surface de la partie de support ; et une structure de raccordement électrique formée sur une deuxième surface de la partie de support.
PCT/EP2021/084494 2020-12-16 2021-12-07 Module de détection pour un dispositif de propulsion électrique, dispositif de propulsion électrique pour un véhicule et procédé de fabrication d'un module de détection WO2022128600A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020215978.5A DE102020215978A1 (de) 2020-12-16 2020-12-16 Sensorbaugruppe für eine elektrische Antriebsvorrichtung, elektrische Antriebsvorrichtung für ein Fahrzeug und Verfahren zur Herstellung einer Sensorbaugruppe
DE102020215978.5 2020-12-16

Publications (1)

Publication Number Publication Date
WO2022128600A1 true WO2022128600A1 (fr) 2022-06-23

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PCT/EP2021/084494 WO2022128600A1 (fr) 2020-12-16 2021-12-07 Module de détection pour un dispositif de propulsion électrique, dispositif de propulsion électrique pour un véhicule et procédé de fabrication d'un module de détection

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DE (1) DE102020215978A1 (fr)
WO (1) WO2022128600A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6891456B2 (en) * 2002-06-10 2005-05-10 Delphi Technologies, Inc. Multi-pole electromagnetic motor apparatus and method of assembling
DE102015225843A1 (de) * 2015-12-18 2017-06-22 Robert Bosch Gmbh Elektrische Antriebseinheit mit einem Gehäuse
DE102016203560A1 (de) 2016-03-04 2017-09-07 Schaeffler Technologies AG & Co. KG Sensormodul für einen Aktor mit verschiebbarem Anker sowie Aktoranordnung
JP2017225337A (ja) * 2016-06-17 2017-12-21 日本電産株式会社 モータ
US20190245411A1 (en) * 2018-02-06 2019-08-08 Mando Corporation Electromechanical actuator package with belt drive mechanism for steer-by-wire hand wheel actuator
DE102018218529A1 (de) * 2018-10-30 2020-04-30 Zf Friedrichshafen Ag Gehäusedeckel für eine elektrische Maschine, elektrische Maschine und Montageverfahren
US20200140004A1 (en) * 2018-11-02 2020-05-07 Denso Corporation Driving device and electric power steering apparatus using the same
US20200169144A1 (en) * 2017-07-19 2020-05-28 Schaeffler Technologies AG & Co. KG Electric motor
US20200303987A1 (en) * 2016-03-24 2020-09-24 Robert Bosch Gmbh Electric machine, and method for producing an electric machine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6891456B2 (en) * 2002-06-10 2005-05-10 Delphi Technologies, Inc. Multi-pole electromagnetic motor apparatus and method of assembling
DE102015225843A1 (de) * 2015-12-18 2017-06-22 Robert Bosch Gmbh Elektrische Antriebseinheit mit einem Gehäuse
DE102016203560A1 (de) 2016-03-04 2017-09-07 Schaeffler Technologies AG & Co. KG Sensormodul für einen Aktor mit verschiebbarem Anker sowie Aktoranordnung
US20200303987A1 (en) * 2016-03-24 2020-09-24 Robert Bosch Gmbh Electric machine, and method for producing an electric machine
JP2017225337A (ja) * 2016-06-17 2017-12-21 日本電産株式会社 モータ
US20200169144A1 (en) * 2017-07-19 2020-05-28 Schaeffler Technologies AG & Co. KG Electric motor
US20190245411A1 (en) * 2018-02-06 2019-08-08 Mando Corporation Electromechanical actuator package with belt drive mechanism for steer-by-wire hand wheel actuator
DE102018218529A1 (de) * 2018-10-30 2020-04-30 Zf Friedrichshafen Ag Gehäusedeckel für eine elektrische Maschine, elektrische Maschine und Montageverfahren
US20200140004A1 (en) * 2018-11-02 2020-05-07 Denso Corporation Driving device and electric power steering apparatus using the same

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