EP4066363A1 - Carte à effet hall à l'intérieur d'une tête d'enroulement - Google Patents

Carte à effet hall à l'intérieur d'une tête d'enroulement

Info

Publication number
EP4066363A1
EP4066363A1 EP20807049.0A EP20807049A EP4066363A1 EP 4066363 A1 EP4066363 A1 EP 4066363A1 EP 20807049 A EP20807049 A EP 20807049A EP 4066363 A1 EP4066363 A1 EP 4066363A1
Authority
EP
European Patent Office
Prior art keywords
measuring unit
angle
electric motor
rotor
stator
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
EP20807049.0A
Other languages
German (de)
English (en)
Inventor
Konrad Artmann
Lothar Dietl
Tobias Schmid
Helmut Burger
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.)
Hilti AG
Original Assignee
Hilti 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 Hilti AG filed Critical Hilti AG
Publication of EP4066363A1 publication Critical patent/EP4066363A1/fr
Pending 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
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • 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
    • 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
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/52—Fastening salient pole windings or connections thereto
    • H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles

Definitions

  • the present invention relates to a stator for an electric motor containing a circuit board holder and an angle measuring unit with at least one Hall sensor for detecting an angle of rotation and at least two hooks for receiving and holding a winding wire, the angle measuring unit being designed to commutate the electric motor as a function of the detected angle of rotation .
  • the present invention also relates to an electric motor with a stator.
  • Electric motors in particular brushless electric motors, with a stator and a rotor rotating in the stator are largely known from the prior art.
  • the European patent application EP 3 316 454 A1 shows, for example, an electric motor according to the prior art.
  • An electric motor usually and essentially contains a stator and a rotor rotating relative to the stator.
  • the rotor for an electric motor usually consists of a number of stacked laminations arranged one behind the other to form a so-called laminated stack.
  • the rotor contains a rotor shaft which is positioned through a central opening in the laminated core. The rotor shaft transfers the torque generated in the electric motor to other components.
  • the stator also contains a commutation device for commutating the electric motor.
  • the commutation device has a number of Hall sensors in order to detect the magnets of the rotating rotor and thus the rotational angle position of the rotor relative to the stator.
  • the object of the present invention is therefore to provide a stator for an electric motor and an electric motor with a stator with which the above-mentioned problem can be solved and the simplest and most compact design possible can be achieved.
  • a stator for an electric motor containing a circuit board holder and an angle measuring unit with at least one Hall sensor for detecting an angle of rotation and at least two hooks for receiving and holding a winding wire, the angle measuring unit for commutating the electric motor as a function of the detected angle of rotation is designed.
  • the circuit board holder contains a pot-like recess with an end face, the recess and the angle measuring unit being designed such that in an assembled state the angle measuring unit rests against the end face of the recess so that the angle measuring unit is in front of the at least one arrow direction two hooks is positioned.
  • the object is achieved in particular by an electric motor with a stator of the type mentioned at the beginning and the features mentioned at the beginning.
  • FIG. 1 shows a perspective view of an electric motor with a stator core, a winding support device, an angle measuring unit, a circuit board holder, a rotor core, a rotor shaft and a rotor shaft bearing;
  • FIG. 2 shows a side sectional view of the electric motor with the stator core, the winding support device, the angle measuring unit, the circuit board holder, the rotor core, the rotor shaft and the rotor shaft bearing;
  • FIG. 3 shows a further sectional view with more details of the electric motor with the stator core, the winding support device, the angle measuring unit, the
  • FIG. 4 shows a perspective sectional view with further details of the circuit board holder, the angle measuring unit, the rotor shaft and the rotor shaft bearing; and
  • FIG. 5 shows a sectional view along the sectional plane AA in FIG. 2 of the electric motor with the stator core, the winding support device, the angle measuring unit, the blank holder, the rotor shaft and the rotor shaft bearing.
  • FIG. 1 shows an electric motor 1 according to the invention.
  • the embodiment shown is a brushless electric motor.
  • the electric motor 1 can in turn serve as a drive in a machine tool.
  • the machine tool can be designed as a drill, hammer drill, saw, grinder or the like. The machine tool is not shown in the figures.
  • the electric motor 1 essentially contains a stator 2 and a rotor 3.
  • the rotor 3 is designed and arranged to be rotatable relative to the stator 2. With the help of the rotor 3 rotating relative to the stator 2, a torque can be generated.
  • the rotor 3 can be referred to as a runner.
  • the rotor 3 in turn essentially contains a rotor shaft 4 and a rotor shaft bearing 5.
  • the rotor 3 contains a rotor lamination stack 6 (also just called a lamination stack).
  • the laminated rotor core 6 comprises several laminated cores lined up one behind the other to form the cylindrical laminated rotor core 6.
  • the laminated rotor core 6 also contains a central through-hole 7 into which the rotor shaft 4 is inserted.
  • the rotor shaft 4 and the laminated rotor core 6 are firmly connected to one another.
  • the rotor shaft bearing 5 is designed to be circular and serves to support the rotor shaft 4.
  • the rotor shaft 4 is positioned with one end 4a in the central opening 5a of the rotor shaft bearing 5.
  • the stator 2 essentially contains a stator lamination stack 8 (also just called a lamination stack), a winding support device 9 and a plate holder 10 for an angle measuring unit 11, see in particular FIGS. 1 and 2.
  • the angle measuring unit 11 is designed essentially as an annular plate with a circular recess 11a.
  • the configuration of the angle measuring unit 11 can also be referred to as a flat cylinder.
  • the circuit board can also be referred to as a printed circuit board, printed circuit board or printed circuit.
  • the circuit board can also be referred to as a printed circuit board or PCB.
  • the angle measuring unit 11 also contains a first, second and third Hall sensor 12a, 12b, 12c for detecting the magnets that are fixedly connected to the rotor 3. In this way, an angle of rotation of the rotor 3 relative to the stator 2 can be detected.
  • the angle measuring unit 11 is designed to commutate the electric motor 1 as a function of the detected angle of rotation. 12a, 12b, 12c Lap support device lap support device accordingly six hooks 13.
  • the circuit board holder 10 is designed as a pot-like recess 14.
  • the pot-like recess 14 has an end face 15 and a circular recess 14a.
  • the end face 5 is indicated in FIGS. 2 to 4.

Landscapes

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

Abstract

L'invention concerne un moteur électrique contenant un support de carte de circuit imprimé et une unité de mesure d'angle comprenant au moins un capteur à effet Hall pour détecter un angle de rotation et au moins deux crochets pour recevoir et maintenir un fil enroulé, l'unité de mesure d'angle étant conçue pour commuter le moteur électrique en fonction de l'angle de rotation détecté. Le support de carte de circuit imprimé contient un renfoncement en forme de pot avec une base, le renfoncement et l'unité de mesure d'angle étant conçus de telle sorte que, à l'état monté, l'unité de mesure d'angle repose contre la base du renfoncement de telle sorte que l'unité de mesure d'angle est positionnée devant les au moins deux crochets dans la direction de la flèche.
EP20807049.0A 2019-11-29 2020-11-19 Carte à effet hall à l'intérieur d'une tête d'enroulement Pending EP4066363A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19212502.9A EP3829041A1 (fr) 2019-11-29 2019-11-29 Circuit imprimé à effet hall à l'intérieur de têtes de bobine
PCT/EP2020/082701 WO2021104990A1 (fr) 2019-11-29 2020-11-19 Carte à effet hall à l'intérieur d'une tête d'enroulement

Publications (1)

Publication Number Publication Date
EP4066363A1 true EP4066363A1 (fr) 2022-10-05

Family

ID=68732905

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19212502.9A Withdrawn EP3829041A1 (fr) 2019-11-29 2019-11-29 Circuit imprimé à effet hall à l'intérieur de têtes de bobine
EP20807049.0A Pending EP4066363A1 (fr) 2019-11-29 2020-11-19 Carte à effet hall à l'intérieur d'une tête d'enroulement

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19212502.9A Withdrawn EP3829041A1 (fr) 2019-11-29 2019-11-29 Circuit imprimé à effet hall à l'intérieur de têtes de bobine

Country Status (4)

Country Link
US (1) US20230017431A1 (fr)
EP (2) EP3829041A1 (fr)
CN (1) CN114667669A (fr)
WO (1) WO2021104990A1 (fr)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0130602D0 (en) * 2001-12-21 2002-02-06 Johnson Electric Sa Brushless D.C. motor
FR2898739B1 (fr) * 2006-03-15 2008-06-13 Skf Ab Systeme de support d'arbre pour moteur electrique, moteur electrique et procede de fabrication.
CN101682246B (zh) * 2007-05-25 2013-08-21 三菱电机株式会社 无刷电动机
JP5580128B2 (ja) * 2010-07-20 2014-08-27 特殊電装株式会社 ブラシレスモータ
KR101429081B1 (ko) * 2013-07-04 2014-08-14 계양전기 주식회사 메인 마그네트를 이용한 회전자 위치 센싱 구조의 모터
JP6521217B2 (ja) * 2014-12-03 2019-05-29 日本電産テクノモータ株式会社 モータおよびモータの製造方法
DE102016002387B4 (de) * 2015-04-02 2022-08-04 Sew-Eurodrive Gmbh & Co Kg Sensoranordnung
KR102127750B1 (ko) * 2015-08-04 2020-06-29 엘지이노텍 주식회사 회로기판, 모터 및 전동식 조향장치
DE102015121102B4 (de) * 2015-12-03 2019-11-07 Bühler Motor GmbH Rotorvorrichtung für einen Elektromotor und/oder Generator, Rotor und Motor mit einer solchen Rotorvorrichtung sowie Herstellungsverfahren
US10205365B2 (en) * 2016-03-30 2019-02-12 Milwaukee Electric Tool Corporation Brushless motor for a power tool
US20170317548A1 (en) * 2016-04-28 2017-11-02 Makita Corporation Electric power tool
CN109155570B (zh) * 2016-05-27 2020-12-01 日本电产株式会社 致动器
EP3252931A1 (fr) * 2016-05-30 2017-12-06 HILTI Aktiengesellschaft Flasque pour moteur électrique sans balais
EP3316454A1 (fr) 2016-10-25 2018-05-02 HILTI Aktiengesellschaft Support d'enroulement et stator
JP6968600B2 (ja) * 2017-07-03 2021-11-17 株式会社マキタ 電動工具
CN208078854U (zh) * 2018-03-08 2018-11-09 中山大洋电机股份有限公司 一种bldc电机
CN209402349U (zh) * 2019-03-13 2019-09-17 常州富兴机电有限公司 一种滚筒电机用霍尔位置可调机构

Also Published As

Publication number Publication date
US20230017431A1 (en) 2023-01-19
EP3829041A1 (fr) 2021-06-02
WO2021104990A1 (fr) 2021-06-03
CN114667669A (zh) 2022-06-24

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