EP3563472A1 - Moteur électrique sans balais - Google Patents
Moteur électrique sans balaisInfo
- Publication number
- EP3563472A1 EP3563472A1 EP17808372.1A EP17808372A EP3563472A1 EP 3563472 A1 EP3563472 A1 EP 3563472A1 EP 17808372 A EP17808372 A EP 17808372A EP 3563472 A1 EP3563472 A1 EP 3563472A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic ring
- shaft
- magnetic
- rotor
- machine according
- 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- Withdrawn
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
Definitions
- the invention relates to a brushless electric machine, in particular a brushless DC motor, with a housing, with at least one rotor, which is arranged on a rotatably mounted in the housing shaft, and with a housing fixed stator and a
- Rotor bearing detection device associated with the rotor.
- Rotor position detection devices are preferably used for this purpose
- a magnetic field transmitter is arranged on the front side of the shaft of the rotor and a magnetic field-sensitive sensor arranged axially or in further seduction of the shaft facing its front side.
- the detected magnetic field changes, whereby the rotational angle position or the rotor position of the rotor can be determined by means of a corresponding evaluation of the sensor output signal.
- the machine according to the invention with the features of claim 1 has the advantage that a particularly accurate and rapid detection of the rotor position is possible, and that space advantages arise.
- the invention provides that the rotor detection device has a rotatably arranged on the shaft or can be arranged multi-pole magnetic ring and at least one radially to the outer periphery of the magnetic ring associated magnetic field-sensitive sensor.
- the invention thus provides that the magnetic field-sensitive sensor is not assigned to the end face or axially of the shaft and the magnetic field transmitter, but radially to the magnetic ring, so that the sensor is ultimately arranged axially at the level of the shaft. This results in that the machine can be built axially shorter overall.
- the rotor position detection device can in principle be arranged on any desired axial section of the shaft, and thus for example also between a shaft bearing and the rotor arranged on the shaft. This results in a design freedom that allows optimal use and optimal design of the electrical machine depending on the existing conditions.
- the senor is designed as a TMR sensor.
- TMR sensors use the principle of magnetic tunnel resistance (TMR). Such a sensor is manufactured in thin-film technologies and allows a highly accurate magnetic field sensing in a small space.
- the senor is oriented such that it has a measuring direction for detecting magnetic fields at an angle other than a perpendicular orientation to the axis of rotation of the
- Main axis of the main measuring direction of the sensor understood.
- the oblique alignment of the main axis or the measuring direction of the sensor ensures that a homogeneous signal is produced at the signal output of the sensor.
- the TMR sensor has a plurality of measuring elements which are interconnected in a TMR bridge on a measuring plate. The perpendicular to the measuring plate thereby represents the main measuring direction In this case, then, the measuring plate is arranged such that its vertical deviates from an exactly radial orientation.
- the magnetic ring has a plurality of magnetic poles with alternating magnetic field orientation distributed over the circumference, which are in particular distributed uniformly over the circumference.
- magnetic poles are hereby
- the magnetic ring is arranged on a pushed onto the shaft magnetic carrier.
- the magnetic ring is not attached directly to the shaft, but held by the magnetic ring carrier at this. This ensures that the magnetic ring is easy and can be mounted on the shaft in a short time.
- a highly accurate arrangement of the magnet ring on the shaft is possible, wherein the same magnetic ring can be arranged on differently configured waves or shaft sections of a shaft by the magnetic ring carrier.
- the magnetic ring carrier has a bursting protection comprising the magnetic ring on its outer circumference.
- the magnetic ring carrier in particular has a jacket wall which surrounds or surrounds the magnetic ring on its outer circumference.
- the burst protection ensures that in the event that the magnetic ring should break, no parts of the magnetic ring are thrown into the environment at high speed. This protects the electrical machine against further damage.
- the magnetic ring is protected by the burst protection itself from external influences, so that the risk of damage to the magnetic ring itself is also reduced.
- the magnetic ring carrier is formed cup-shaped. As a result, the burst protection automatically by the Mantle wall formed. According to a preferred embodiment of the invention it is provided that the magnetic ring carrier also has an internal
- Mantle wall of the cup-shaped magnetic carrier has, which is associated with the inner circumference of the magnetic ring, so that the magnetic ring is protected or worn on the inside by the inner jacket wall of the magnetic ring carrier.
- the magnetic ring carrier at least one positive
- Anti-rotation lock forms with the shaft.
- the rotation is formed, for example, by an axially or longitudinally extending groove on the outer circumference of the shaft and engaging in the groove driving projection which is fixedly connected to the magnetic ring or in particular integrally formed therewith.
- a plurality of such groove-driving projection pairs or anti-rotation are formed distributed over the circumference of the magnetic ring carrier and the shaft to ensure a rotational drive and a variable orientation of the magnetic ring carrier on the shaft.
- FIG. 1 shows a brushless electric machine in a simplified
- Figure 2 is a detail view of the machine in a perspective
- FIG. 3 shows a second detail view of the machine in a perspective view
- FIG. 1 shows in a simplified longitudinal sectional illustration a brushless DC motor 1 which has a housing 2 in which a shaft 3 is rotatably mounted.
- the bearing of the shaft 3 is presently realized by a plurality WälzShava 4, of which only one example is shown here.
- a rotor 5 is arranged and rotatably connected to the shaft 3.
- the rotor 5 is coaxially associated with a stator 6, which is fixed to the housing or disposed on the housing 2.
- the stator 6 and a coil of the stator 6 can be energized to enable the rotor 5 in a rotational movement with the predetermined torque.
- a rotor position detection device 7 is provided, by means of which the current angular position of the rotor 5 with respect to the stator 6 is monitored.
- the rotor bearing detection device 7 has a magnetic ring 8, which is a plurality of uniform over its circumference and with alternating
- Magnetic field orientation distributed magnetic poles N and S has.
- the magnetic ring 8 is held on a magnetic ring carrier 9.
- the magnetic ring 9 is also annular and thus has a central
- the inner diameter of the opening 10 and the outer diameter 3 are formed in the Aufschiebe Scheme such that a virtually backlash fit or a press fit is formed when pushed to ensure a secure holding the magnetic ring carrier 9 on the shaft 3.
- At least one anti-rotation 11 is formed between the magnetic ring carrier 9 and the shaft 3. This is according to the present embodiment by a formed in the outer periphery of the shaft 3 and a groove 2 formed by the magnetic ring carrier 9 driving projection 13 which engages in the groove 12
- the driving projection 13, in particular in the circumferential direction, is free of play in the groove 12.
- a plurality of such anti-rotation 11 are distributed over the circumference of magnetic ring carrier 9 and shaft 3 or arranged.
- the shaft 3 has a plurality of the grooves 12, so that the magnetic ring carrier 9 can be pushed onto the shaft 3 in a plurality of rotational angle positions.
- the respective groove 12 is axially open
- the magnetic ring carrier 9 has an outer casing wall 14, which comprises the magnetic ring 8 on its outer circumference. Should this be damaged in operation and break, so items of magnetic ring are collected by the burst protection 15 and are not thrown into the interior of the housing 2, where they could cause further damage.
- the magnet ring carrier 9 has an inner casing wall 16 which at least axially surrounds the inner circumference of the magnet ring 8 so that the magnet ring 8 is held on the magnet ring carrier 9 between the casing outer wall 14 and the casing wall 16.
- the magnetic ring carrier 9 as a whole acquires a cup-shaped form into which the magnetic ring 8 can be easily inserted axially.
- a magnetic field-sensitive sensor 17 is further arranged and radially associated with the outer circumference of the magnetic ring 8.
- the sensor 17 thus lies axially at the level of the magnetic ring 8 in the housing 2.
- the sensor 17 is designed as a TMR sensor with a plurality of measuring elements, which are arranged side by side on a measuring plate 18 and an electrical
- the measuring plate 18 is aligned at an angle deviating from 90 ° to the axis of rotation of the magnetic ring 8, so that the main measuring direction or detection direction of the sensor 17 is aligned obliquely to the axis of rotation of the magnetic ring 8.
- FIG. 2 shows in a perspective detail view the shaft 3 with the magnetic ring carrier 9 arranged thereon.
- the cup shape of the magnetic ring carrier 9 can be seen well.
- the shaft 3 more of the grooves 12, which extend over a wide axial region of the shaft 3, so that the magnetic ring carrier 9 freely on many different axial positions on the shaft 3 can be arranged.
- the magnetic ring carrier 9 can be arranged between the rotor 5 and a further roller bearing or on the side of the rolling element bearing facing away from the rotor 5.
- FIG. 3 shows, in a further perspective partial view, the shaft 3 with the magnetic ring carrier 9 of FIG. 2 arranged thereon, the magnetic ring 8 now being inserted in the magnetic ring carrier 9.
- FIG. 3 shows, in a further perspective partial view, the shaft 3 with the magnetic ring carrier 9 of FIG. 2 arranged thereon, the magnetic ring 8 now being inserted in the magnetic ring carrier 9.
- the magnetic ring 8 can be designed in different number of poles.
- magnetic material all magnetic materials can be used, such as rare earth magnets, in particular sintered or plastic bonded, hard ferrites or the like.
- the sensor 17 detects the strength of the magnetic field generated by the magnetic ring 8 and a computing unit coupled to the sensor 17
- the coil of the stator 6 is then energized and in particular electrically commutated.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Brushless Motors (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016226293.9A DE102016226293A1 (de) | 2016-12-29 | 2016-12-29 | Bürstenlose elektrische Maschine |
PCT/EP2017/079390 WO2018121912A1 (fr) | 2016-12-29 | 2017-11-16 | Moteur électrique sans balais |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3563472A1 true EP3563472A1 (fr) | 2019-11-06 |
Family
ID=60569888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17808372.1A Withdrawn EP3563472A1 (fr) | 2016-12-29 | 2017-11-16 | Moteur électrique sans balais |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210135546A1 (fr) |
EP (1) | EP3563472A1 (fr) |
JP (1) | JP2020515214A (fr) |
CN (1) | CN110140283A (fr) |
DE (1) | DE102016226293A1 (fr) |
WO (1) | WO2018121912A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113169653A (zh) * | 2018-12-18 | 2021-07-23 | 罗伯特·博世有限公司 | 无刷电机 |
DE102019203482A1 (de) * | 2019-03-14 | 2020-09-17 | Robert Bosch Gmbh | Stirnrad und dessen Herstellverfahren sowie bürstenloser Elektromotor |
DE102019123951B3 (de) * | 2019-09-06 | 2020-08-20 | Universität Rostock | Verfahren und System zur Bestimmung von Positionsverlagerungen |
DE102020100319A1 (de) * | 2020-01-09 | 2021-07-15 | HELLA GmbH & Co. KGaA | Drehwinkelsensor zur Bestimmung eines Drehwinkels und/oder eines Drehmoments |
GB2592611A (en) * | 2020-03-03 | 2021-09-08 | Zf Automotive Uk Ltd | A magnetic encoder |
DE202021100495U1 (de) | 2021-02-02 | 2022-05-03 | Air-Tec-Vogel GmbH | Druckluftmotor |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4942285B1 (fr) * | 1970-05-18 | 1974-11-14 | ||
JP2001221656A (ja) * | 2000-02-04 | 2001-08-17 | Asmo Co Ltd | モータアクチュエータ |
CN2708557Y (zh) * | 2004-04-29 | 2005-07-06 | 贵阳万江航空机电有限公司 | 一种能够发出转速脉冲信号的电机 |
DE102004049125A1 (de) * | 2004-10-07 | 2006-05-11 | Sew-Eurodrive Gmbh & Co. Kg | Lüfterrad und Elektromotor |
DE102005009607B4 (de) * | 2005-02-28 | 2010-04-29 | Sew-Eurodrive Gmbh & Co. Kg | Antrieb und Verfahren zur Überwachung dieses Antriebs |
JP4273363B2 (ja) * | 2006-11-21 | 2009-06-03 | 日立金属株式会社 | 回転角度検出装置、回転機、及び回転角度検出法 |
JP4858855B2 (ja) * | 2006-11-21 | 2012-01-18 | 日立金属株式会社 | 回転角度検出装置および回転機 |
JP4900835B2 (ja) * | 2007-04-13 | 2012-03-21 | 日立金属株式会社 | 角度検出装置、バルブ装置および非接触式ボリューム |
DE102012204634A1 (de) * | 2012-03-22 | 2013-09-26 | Zf Friedrichshafen Ag | Magnetfeldsensor, Betätigungsvorrichtung und Verfahren zur Bestimmung einer Relativposition |
DE102012208408A1 (de) * | 2012-05-21 | 2013-11-21 | Robert Bosch Gmbh | Verfahren zur Montage eines Geberelementes an einen Rotor eines Elektromotors |
JP5850262B2 (ja) * | 2013-03-04 | 2016-02-03 | 株式会社デンソー | 回転電機 |
EP2808983B1 (fr) * | 2013-05-28 | 2016-09-14 | Lakeview Innovation Ltd. | Encodeur pour un capteur rotatif compact et moteur électrique doté d'un capteur rotatif compact |
DE102014200365A1 (de) * | 2013-11-26 | 2015-05-28 | Continental Teves Ag & Co. Ohg | Sensoranordnung und Magnetisierungsvorrichtung sowie Verwendung der Sensoranordnung in einem Kraftfahrzeugsteuergerät |
JP5886269B2 (ja) * | 2013-12-27 | 2016-03-16 | マブチモーター株式会社 | 回転検出装置およびモータ |
JP2016082685A (ja) * | 2014-10-15 | 2016-05-16 | 本田技研工業株式会社 | ブラシレスモータ及び電動パワーステアリング装置 |
DE102014224961A1 (de) * | 2014-12-05 | 2016-06-09 | Robert Bosch Gmbh | Vorrichtung und Algorythmik zur radialen mechanisch absoluten Winkelbestimmung einer Welle |
JP6198775B2 (ja) * | 2015-06-30 | 2017-09-20 | 三菱電機株式会社 | 電動駆動装置 |
CN106090551A (zh) * | 2016-08-17 | 2016-11-09 | 广州好创智能科技有限公司 | Vr云台 |
CN106208593B (zh) * | 2016-08-26 | 2019-01-22 | 沈阳兴华航空电器有限责任公司 | 一种旋转式密封的无刷直流电机 |
-
2016
- 2016-12-29 DE DE102016226293.9A patent/DE102016226293A1/de active Pending
-
2017
- 2017-11-16 JP JP2019535955A patent/JP2020515214A/ja active Pending
- 2017-11-16 EP EP17808372.1A patent/EP3563472A1/fr not_active Withdrawn
- 2017-11-16 CN CN201780080838.8A patent/CN110140283A/zh active Pending
- 2017-11-16 US US16/473,766 patent/US20210135546A1/en not_active Abandoned
- 2017-11-16 WO PCT/EP2017/079390 patent/WO2018121912A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
US20210135546A1 (en) | 2021-05-06 |
JP2020515214A (ja) | 2020-05-21 |
WO2018121912A1 (fr) | 2018-07-05 |
CN110140283A (zh) | 2019-08-16 |
DE102016226293A1 (de) | 2018-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3563472A1 (fr) | Moteur électrique sans balais | |
EP1607720B1 (fr) | Capteur d'angle de braquage | |
EP1408305B9 (fr) | Dispositif de mesure de l'angle absolu d'un arbre tournant | |
DE112017000172T5 (de) | Bürstenloser Gleichstrommotor | |
DE102008060262B4 (de) | Sensorsystem für elektrische Maschinen mit mehrpoligen Sensormagneten und mindestens einem Hall-IC | |
EP2678922B1 (fr) | Dispositif pour déterminer la position angulaire d'un arbre et d'un moteur électrique | |
DE112016004315T5 (de) | Schleifgerät | |
DE102009019719A1 (de) | Energieautarke magnetische Erfassungsanordnung | |
DE102008042912A1 (de) | Sensoreinrichtung zum Erfassen der Drehlage eines rotierenden Bauteils | |
DE102012100829A1 (de) | Einrichtung zur Erfassung der Winkellage einer Welle eines Elektromotors und Scheibenwischermotor mit einer Einrichtung zur Erfassung der Winkellage | |
DE102013217428A1 (de) | Elektrische Maschine, Rotorlagensensorik | |
EP2432103B1 (fr) | Moteur électrique à commutation électronique avec un capteur de position du rotor | |
EP2644921A1 (fr) | Ensemble de roulement avec capteur et codeur fixé à la bague rotative d'un roulement incorporé dans un logement de roulement | |
WO2009015496A1 (fr) | Moteur électrique doté d'un ensemble de détecteur de position du rotor | |
EP1057243B1 (fr) | Dispositif de mesure d'angle de rotation a collecteur magnetise | |
EP2065690B1 (fr) | Machine dynamoélectrique dotée d'un système d'enregistrement de la température | |
WO2019081011A1 (fr) | Pompe à fluide électrique de véhicule automobile | |
DE102016212925A1 (de) | Permanentmagnet für eine Sensoranordnung zur Bestimmung einer Winkelposition des Permanentmagneten | |
WO2008077865A1 (fr) | Détecteur de position de rotor d'une direction assistée électrique pour un véhicule automobile | |
DE102018215783A1 (de) | Positionserfassungssystem und Verfahren zur Erfassung einer Bewegung einer Maschine | |
WO2015185262A1 (fr) | Capteur magnétique pour un arbre de rotor d'une machine électrique, et machine électrique | |
DE102015201160B4 (de) | Bürstenloser Gleichstrommotor | |
DE102005015141A1 (de) | Lagesensorsystem | |
EP3824250B1 (fr) | Système de mesure d'angle de rotation | |
DE102016200650A1 (de) | Elektromotor mit induktivem Winkelsensor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190729 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ROBERT BOSCH GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20210907 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20220118 |