公开(公告)号：US12203435B2

公开(公告)日：2025-01-21

申请号：US18285364

申请日：2021-04-13

Applicant: Cummins Inc.

Inventor： Prashanth Visweswara Sastry

IPC: F02N15/02 ,  H02K5/10 ,  H02K7/02 ,  H02K7/116 ,  H02K9/19 ,  H02K11/215 ,  F02N11/04

Abstract: Electric machine assemblies are disclosed. The electric machine assembly includes a stator, a rotor movably coupled with the stator, a starter ring gear component fixedly coupled with the rotor on a first side of the stator, and a transmission coupler fixedly coupled with the rotor on a second side of the stator opposite from the first side. Further disclosed are engine systems and methods of assembling the same, where the engine system includes an engine block with a crankshaft, as well as the electric machine assembly operatively coupled with the engine block such that the starter ring gear component is fixedly coupled with the crankshaft and the rotor on a first side of the stator.

公开(公告)号：US12202443B2

公开(公告)日：2025-01-21

申请号：US17627411

申请日：2020-06-29

Applicant: Valeo Systemes d'Essuyage

Inventor： Jose-Luis Herrada ,  Alain Servin ,  Mehdi Belhaj

IPC: H02K11/21 ,  B60S1/08 ,  H02K7/08 ,  H02K7/116 ,  H02K11/215 ,  H02K21/16

Abstract: The invention relates to a geared motor comprising a first brushless electric motor part having a stator, a rotor and a drive shaft, a second part having an output shaft and a reduction gear mechanism and an electronic part. The reduction gear mechanism comprises an output shaft, a worm and a toothed wheel designed to be engaged by the worm and to drive the output shaft in rotation. The geared motor comprises at least one rolling guide bearing disposed on the drive shaft and a multipolar magnet for measuring the position of the rotor. The rolling bearing is disposed between the measurement magnet and the worm such that the electric motor can be controlled depending on the measurement of the position of the rotor.

公开(公告)号：US20250015739A1

公开(公告)日：2025-01-09

申请号：US18762122

申请日：2024-07-02

Applicant: NIDEC CORPORATION

Inventor： Shuji ENDO ,  Takashi HATTORI ,  Yoshiaki YAMASHITA ,  Sohei MIYAKE

IPC: H02P21/00 ,  H02K9/22 ,  H02K11/01 ,  H02K11/215 ,  H02K11/30 ,  H02P21/06 ,  H02P21/14 ,  H02P21/22

Abstract: A motor control device that controls a motor includes a calculator to calculate angle information related to a rotation angle of a rotor of the motor based on an output from a magnetic sensor, and a corrector to correct the angle information calculated by the calculator. The magnetic sensor is a sensor that includes a magnetoresistance effect element and outputs signals of two systems out of phase with each other by 180°. The corrector corrects the angle information using a correction amount expressed by a function including a current value of a motor current supplied to a stator of the motor and a phase angle of the motor current, a current value of a power source current supplied to the motor control device, and a mechanical angle of the rotor calculated based on an output from the magnetic sensor.

公开(公告)号：US20250007430A1

公开(公告)日：2025-01-02

申请号：US18745528

申请日：2024-06-17

Applicant: STMICROELECTRONICS INTERNATIONAL N.V.

Inventor： Dietmar MENDEN ,  Christian BJOERNSEN

IPC: H02P5/68 ,  B60R16/023 ,  H02K11/215 ,  H02P7/03 ,  H02P7/29

Abstract: The present disclosure relates to a motor control device comprising: a motor driver electronic circuit configured to be electrically coupled to at least one motor and to drive the at least one motor; a control electronic circuit electrically coupled to the motor driver electronic circuit, and configured to control the motor driver electronic circuit and to be electrically coupled to a motor position sensor; wherein the control electronic circuit further comprises a CAN type transceiver configured to directly communicate with at least one main ECU, which is external to the motor control device, using a commander and responder CAN type communication protocol, the control electronic circuit being configured to act as a responder node during a communication with the main ECU.

公开(公告)号：US20250007361A1

公开(公告)日：2025-01-02

申请号：US18747282

申请日：2024-06-18

Applicant: NORMAND BUSSIÈRES ,  121352 CANADA INC.

Inventor： Normand BUSSIÈRES ,  Patrick MARTEL ,  Mathieu PARÉ

IPC: H02K11/215 ,  H02K21/16 ,  H02K29/08

Abstract: Electric motors and methods of controlling electric motors are described herein. The electric motors include a mobile component having at least one permanent magnet coupled thereto and a stator spaced apart from the mobile component. The stator includes at least one stator pole having a ferromagnetic core and a coil wrapped around the ferromagnetic core. The ferromagnetic core is naturally attracted to the at least one permanent magnet. The motors also include a magnetic position control system configured to monitor a position of the at least one permanent magnet relative to the stator and controllably deliver an electric pulse to the coil of each stator pole to generate a repulsive magnetic flux on the ferromagnetic core to cancel an attraction force between the ferromagnetic core and the at least one permanent magnet to control movement of the mobile component.

公开(公告)号：US20250007343A1

公开(公告)日：2025-01-02

申请号：US18634984

申请日：2024-04-14

Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.

Inventor： Congcong ZHU

IPC: H02K1/28 ,  G01S7/481 ,  H02K11/215 ,  H02K11/22

Abstract: The present application relates to the field of beam scanning technology and provides a galvanometer motor and a LiDAR. The galvanometer motor includes a stator assembly, a rotor assembly, a tunneling magnetoresistance sensor, a first magnet, and a second magnet. The stator assembly includes a housing and a stator body, while the rotor assembly includes a rotating shaft, a rotor magnet, and an angle limiting member. The rotating shaft is rotatably mounted in the housing around a first shaft line, with a gap between the rotor magnet and the stator body. The rotor magnet rotates around the first shaft line under the magnetic field of the stator body. The tunneling magnetoresistance sensor can map the limited angles formed by the first angle and the second angle into finite position codes.

公开(公告)号：US12166390B2

公开(公告)日：2024-12-10

申请号：US17929802

申请日：2022-09-06

Applicant: MAKITA CORPORATION

Inventor： Kei Kouda

IPC: H02K21/12 ,  B27B17/08 ,  H02K1/278 ,  H02K3/34 ,  H02K7/14 ,  H02K11/215 ,  B27B17/02

Abstract: An electric work machine (1) includes: a brushless motor having a stator disposed around a rotor (30); and an output part driven by the rotor. The rotor has a rotor core (31) and first and second magnetic-pole parts (34S, 34N) disposed around a circumferential direction of the rotor core. When the induced voltage of the brushless motor is given as Va, the power-supply voltage of the brushless motor is given as Vb, the rotational speed of the brushless motor is given as ω, a first induced voltage constant, which is expressed by Va/ω, is given as Ea [V/krpm], a pole-pairs count, which is the number of the first magnetic-pole parts or the second magnetic-pole parts, is given as Pi, and a second induced voltage constant, which is expressed as Ea/Pi, is given as Eb [V/krpm·pole-pairs count], the motor satisfies the condition: Eb≤0.025×Vb.

公开(公告)号：US12160195B2

公开(公告)日：2024-12-03

申请号：US17910029

申请日：2021-03-10

Applicant: Festool GmbH

Inventor： Patrick Schön ,  Markus With

IPC: H02K7/14 ,  H02K7/08 ,  H02K11/215 ,  H02K21/16 ,  H02P6/16 ,  B25F5/00

Abstract: A drive motor (10) for a vacuum cleaner or a machine tool, wherein the drive motor (10) includes a stator (20) with a stator coil arrangement (26), and a rotor (30) wherein a sensor arrangement (60) is arranged in a stationary manner with respect to the stator in order to detect a respective angle of rotation position of the rotor (30) with respect to the stator, said sensor arrangement comprising at least two sensors (67A, 67b, 67C). It is provided that the at least two sensors are configured to detect two waves of a magnetic rotating field (FB) of the rotor (30) wherein the sensors generate the switching signals in a manner dependent on a wave of the magnetic rotating field (FB) exceeding or undershooting a switching threshold (SH, SL) of the sensor (67A, 67b, 67C).

公开(公告)号：US12149131B2

公开(公告)日：2024-11-19

申请号：US17750597

申请日：2022-05-23

Applicant: Steering Solutions IP Holding Corporation

Inventor： Mojtaba Bahrami Kouhshahi ,  Mohammed (Rakib) Islam ,  Jeffrey T. Klass ,  Steven J. Collier-Hallman ,  Md. Zakirul Islam

IPC: H02K11/215 ,  H02K7/00 ,  H02K29/08

Abstract: An electric machine includes a rotor structure disposed within a motor housing, wherein a second rotor end has a plurality of axially stacked laminations. The electric machine further includes a motor position sensor system which includes a first plurality of cutouts defined in the plurality of axially stacked laminations, wherein the first plurality of cutouts have a progressively smaller cross-sectional area at each lamination. The motor position sensor system also includes a second plurality of cutouts defined in the plurality of axially stacked laminations, wherein the second plurality of cutouts have a progressively smaller cross-sectional area at each lamination. The motor position sensor system further includes a plurality of motor sensors axially spaced from the second rotor end, and a plurality of sensor magnets axially spaced from the second rotor end and the plurality of motor sensors.

公开(公告)号：US20240366351A1

公开(公告)日：2024-11-07

申请号：US18646125

申请日：2024-04-25

Applicant: Shenzhen Shuye Technology Co., Ltd.

Inventor： Hongxin Ye

IPC: A61C17/22 ,  A46B5/00 ,  A46B13/02 ,  A61C17/34 ,  H02K7/08 ,  H02K11/215 ,  H02K33/16

Abstract: A motor assembly for an electric toothbrush, a brush handle assembly for an electric toothbrush, and an electric toothbrush. The motor assembly includes: a motor body, a mounting seat, a position feedback member, and a position sensor. The motor body is arranged with an output shaft. The mounting seat defines a connection hole; wherein the mounting seat is fixedly sleeved on the output shaft through the connection hole to be rotatable with the output shaft; the mounting seat further defines a mounting slot disposed on a peripheral side of the connection hole. The position feedback member is arranged at the mounting slot to be rotatable with the output shaft. The position sensor is spaced apart from the mounting seat and disposed on a side toward which an opening of the mounting slot is oriented; the position sensor is configured to detect a motion position of the position feedback member.