EP3701624A1 - Pompe à fluide électrique de véhicule automobile - Google Patents

Pompe à fluide électrique de véhicule automobile

Info

Publication number
EP3701624A1
EP3701624A1 EP17788241.2A EP17788241A EP3701624A1 EP 3701624 A1 EP3701624 A1 EP 3701624A1 EP 17788241 A EP17788241 A EP 17788241A EP 3701624 A1 EP3701624 A1 EP 3701624A1
Authority
EP
European Patent Office
Prior art keywords
sensor
rotor
magnets
motor vehicle
hall sensor
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.)
Withdrawn
Application number
EP17788241.2A
Other languages
German (de)
English (en)
Inventor
Alessandro MALVASI
Christian Schulz
Frank Bürger
Martin Glogasa
Witold Joschko
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.)
Pierburg Pump Technology GmbH
Original Assignee
Pierburg Pump Technology 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 Pierburg Pump Technology GmbH filed Critical Pierburg Pump Technology GmbH
Publication of EP3701624A1 publication Critical patent/EP3701624A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
    • H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
    • 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
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2211/00—Specific aspects not provided for in the other groups of this subclass relating to measuring or protective devices or electric components
    • H02K2211/03—Machines characterised by circuit boards, e.g. pcb
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the invention relates to an electric vehicle fluid pump with an electric drive motor which is brushless and electronically commutated, the drive motor comprising: a permanent magnet motor rotor with a motor shaft and at least two rotor poles, in each of which a permanent magnet is embedded, a plurality stator-side magnetic coils, at least two sensor magnets, at least one stator-side Hall sensor, which is arranged eccentrically lying in a transverse plane such that it detects the axial magnetic fields of the sensor magnets.
  • Hall sensors are used, which are arranged axially of the permanent magnetically excited motor rotor, for example, on the radius of the rotor poles, and on Detecting magnetic fields.
  • the absolute field strength of the detected by the respective half sensor magnetic field of the rotor poles and the size of interference signals are crucial.
  • an electric vehicle hydraulic pump with a brushless and electronically commutated drive motor which has a permanent magnet motor rotor with a plurality of rotor poles.
  • the position detection takes place via a plurality of end-side Hall sensors which detect the magnetic field generated by the permanent magnet motor rotor radially.
  • the object of the invention is to provide a motor vehicle fluid pump with an electronically commutated drive motor, which has a high reliability and energy efficiency at low production costs.
  • the at least two sensor magnets are diametrically magnetized, wherein the at least one Halisensor is arranged such that at a rotor rotation of each sensor magnet both polarities (N, S) are detectable.
  • the motor vehicle fluid pump according to the invention has a brushless and electrically commutated drive motor, wherein the permanent magnetically excited motor rotor has a plurality of rotor poles and a plurality of magnet coils are provided on the stator side.
  • the permanent magnetically excited motor rotor has a plurality of rotor poles and a plurality of magnet coils are provided on the stator side.
  • at least one Hall sensor is provided, which is arranged lying in a transverse plane to the Motoraxialen.
  • the at least one Hall sensor is arranged at a distance from the motor axial, so that it detects the axial magnetic fields of the passing sensor magnets.
  • the at least one Hall sensor is preferably arranged at a radius r from the axis of rotation of the motor shaft, the radius r being greater than or equal to a distance r m m from the axis of rotation to a center point of a sensor magnet and less than or equal to a distance r max from the axis of rotation Point of a sensor magnet with maximum distance from the axis of rotation.
  • the at least one Hall sensor is arranged such that in a rotor circulation of each sensor magnet both polarities (N, S) are detected.
  • the at least two sensor magnets are embedded in the rotor poles
  • Permanent magnets formed so that no additional elements are required for the detection of the rotor position.
  • the at least two sensor magnets are formed by permanent magnets attached to the rotor poles.
  • the magnetic field detectable by the Hall sensor can be amplified, so that the signal / noise ratio is improved.
  • additional permanent magnets are therefore provided as sensor magnets.
  • the sensor magnets are cuboid. provided on which all Hall sensors are arranged. Furthermore, both the control electronics and the power electronics of the motor control can be located on the printed circuit board. The Hall sensors are therefore not located away from the board with the control and power electronics. As a result, the signal paths between the Hall sensor and the control electronics are short.
  • the Hall sensors are provided on the motor rotor facing the proximal side of the printed circuit board.
  • the Hall sensors are thus arranged axially between the printed circuit board and the motor rotor, so they are placed in the shortest possible distance to the motor rotor.
  • the printed circuit board can have a motor shaft opening through which the motor shaft of the motor rotor protrudes.
  • the printed circuit board is cast in a plastic core.
  • the printed circuit board including all Hall sensors and electronic components is well shielded against mechanical and other disturbances. Potting the printed circuit board is also advantageous, since this is usually the cooling of the electronic components and in particular the power electronics or
  • FIG. 1 shows a schematic representation of an electric motor vehicle fluid pump with an electric drive motor and a pump module
  • Figure 2 is a longitudinal section of the drive motor of the motor vehicle fluid pump
  • FIG. 3 shows a cross section of the drive motor of the motor vehicle fluid pump of Figure 1.
  • the pump module 14 may be a positive displacement pump, for example a diaphragm pump, rotary vane pump, vane pump or piston pump, however also be a flow pump, such as a centrifugal or Impeiler pump.
  • the drive motor 12 is shown in longitudinal section.
  • the drive motor 12 is a brushless and electronically commutated drive motor.
  • the drive motor 12 has a permanent magnetically excited motor rotor 30 with four rotor poles 381,382,383,384, in each of which a diametrically magnetized permanent magnet 36i, 362,36 3 , 36 4 is stored.
  • the motor rotor 30 has a motor shaft 32 with a rotation axis 33, which drives a pump shaft of the pump module 14.
  • a printed circuit board 50 lying in a transverse plane, which has a board body 52 with printed conductors 54 on its proximal side.
  • the proximal side of the board body 52 is the motor rotor 30 axially facing side, whereas the motor rotor 30 axially facing away from the side is the distal side, the track board 50 has a motor shaft opening 56 through which the motor shaft 32 protrudes.
  • On the proximal side of the board body 52 both the control electronics and the power electronics of the motor control are arranged.
  • a Hall sensor 60 is arranged on the proximal side of the board body. Hall sensor 60 detects that of the sensor magnets which are formed by the permanent magnets embedded in the rotor poles
  • the power electronics of the printed circuit board 50 is electrically connected to the magnet coils 40 via the conductor tracks 54 and via axial connecting lines 66.
  • the printed circuit board 50 is arranged axially such that the Hall sensor 60 has the smallest possible distance to the axially opposite end of the motor rotor 30.
  • the entire circuit board 50 including the control electronics, the power electronics and the Hall sensor 60 and the connecting lines 66 are in a monolithic plastic Connecting cables connected to a motor connector 68.
  • FIG. 3 now shows a sectional view in the transverse direction of the drive motor 12 of the motor vehicle fluid pump 10.
  • the Hall sensor 60 can not be seen, but is to illustrate the invention, the position of the Hall sensor 60 is shown by its reference numeral.
  • the Hall sensor 60 is arranged here with a radius r from the axis of rotation 33 of the motor shaft 32.
  • the position of the Hall sensor 60 is in this case selected so that the circle described by the radius r by a respective, outwardly polarity region in the region of the cross-sectional center of the sensor magnet

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Brushless Motors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)

Abstract

L'invention concerne une pompe à fluide électrique pour véhicule automobile pourvue d'un moteur d'entraînement (12) électrique qui est sans balais et commuté électroniquement, le moteur d'entraînement (12) comportant un rotor de moteur (30) à aimants permanents pourvu d'un arbre de moteur (32) et d'au moins deux pôles de rotor (361, 363), dans chacun desquels est disposé un aimant permanent (361, 363), plusieurs bobines magnétiques (40) du côté du stator, au moins deux aimants de capteurs (361, 363), au moins un capteur à effet Hall (60) qui est agencé de manière excentrée dans un plan transversal de telle sorte qu'il détecte les champs magnétiques axiaux des aimants de capteurs (361, 363), les au moins deux aimants de capteurs (361, 363) étant magnétisés diamétralement, le ou les capteurs à effet Hall (60) étant agencés de telle sorte que les deux polarités peuvent être détectées lors d'une circulation autour du rotor de chaque aimant de capteur (361, 363).
EP17788241.2A 2017-10-25 2017-10-25 Pompe à fluide électrique de véhicule automobile Withdrawn EP3701624A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/077309 WO2019081011A1 (fr) 2017-10-25 2017-10-25 Pompe à fluide électrique de véhicule automobile

Publications (1)

Publication Number Publication Date
EP3701624A1 true EP3701624A1 (fr) 2020-09-02

Family

ID=60164727

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17788241.2A Withdrawn EP3701624A1 (fr) 2017-10-25 2017-10-25 Pompe à fluide électrique de véhicule automobile

Country Status (5)

Country Link
US (1) US11462971B2 (fr)
EP (1) EP3701624A1 (fr)
JP (1) JP7083895B2 (fr)
CN (1) CN111226384B (fr)
WO (1) WO2019081011A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3869038A1 (fr) * 2020-02-20 2021-08-25 Power Packer North America, Inc. Unité de pompe avec pompe et moteur électrique
NL2028179B1 (en) * 2021-05-10 2022-11-24 Power Packer North America Inc Recreational vehicle leveling system.
US11555716B1 (en) * 2021-10-20 2023-01-17 Allegro Microsystems, Llc Harmonic compensation with magnitude feedback for magnetic field sensors

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2681958B2 (ja) * 1988-01-20 1997-11-26 松下電工株式会社 無刷子電動機
US5864192A (en) 1992-07-09 1999-01-26 Seiko Epson Corporation Brushless motor with magnetic sensor to detect leaked magnetic flux
EP1146625A3 (fr) 2000-04-10 2004-04-28 Kabushiki Kaisha MORIC Machine électrique tournante
JP2001128417A (ja) 2000-09-18 2001-05-11 Hitachi Ltd 電動機
WO2007012370A1 (fr) * 2005-07-26 2007-02-01 Ebm-Papst St. Georgen Gmbh & Co. Kg Moteur electrique sans balai
JP2007221976A (ja) 2006-02-20 2007-08-30 Hitachi Car Eng Co Ltd ブラシレスモータ
JP2012205355A (ja) 2011-03-24 2012-10-22 Toshiba Corp モータ
DE102011079962A1 (de) 2011-07-28 2013-01-31 Robert Bosch Gmbh Elektromotor mit einem Rotorpositionssensor
JP5858220B2 (ja) 2011-10-05 2016-02-10 日本電産株式会社 モータ
EP2811168B1 (fr) 2012-01-31 2021-08-18 Mitsubishi Electric Corporation Pompe ainsi que procédé de fabrication de celle-ci, et dispositif de cycle de réfrigération
JP5743947B2 (ja) * 2012-04-12 2015-07-01 三菱電機株式会社 電動機、その電動機を備えた圧縮機および送風機、それら圧縮機あるいは送風機を備えた冷凍空調装置
EP2701291B1 (fr) * 2012-08-21 2015-08-12 Pierburg Pump Technology GmbH Pompe à fluide électrique pour véhicule automobile
JP6248433B2 (ja) 2013-07-02 2017-12-20 日本電産株式会社 モータ
JP6311274B2 (ja) 2013-11-04 2018-04-18 株式会社ジェイテクト 回転電機用ロータの製造方法
JP6441617B2 (ja) 2014-09-01 2018-12-19 株式会社ミツバ ブラシレスモータ
JP6509347B2 (ja) * 2015-08-21 2019-05-08 三菱電機株式会社 回転電機及び空気調和装置

Also Published As

Publication number Publication date
US11462971B2 (en) 2022-10-04
JP2021501550A (ja) 2021-01-14
JP7083895B2 (ja) 2022-06-13
CN111226384A (zh) 2020-06-02
WO2019081011A9 (fr) 2020-03-26
US20200251965A1 (en) 2020-08-06
WO2019081011A1 (fr) 2019-05-02
CN111226384B (zh) 2022-07-05

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Inventor name: MALVASI, ALESSANDRO

Inventor name: JOSCHKO, WITOLD

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Inventor name: GLOGASA, MARTIN

Inventor name: SCHULZ, CHRISTIAN

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