公开(公告)号：US20180191209A1

公开(公告)日：2018-07-05

申请号：US15858873

申请日：2017-12-29

Applicant: Johnson Electric S.A.

Inventor： Yue LI ,  Maoxiong JIANG ,  Chuiyou ZHOU ,  Yong WANG ,  Xiaoning ZHU ,  Guihua LI ,  Yonggang ZHANG

IPC: H02K1/17 ,  H02K1/27 ,  H02K5/16

CPC classification number: H02K1/17 ,  H02K1/24 ,  H02K1/2726 ,  H02K5/161 ,  H02K23/40 ,  H02K2201/03 ,  H02K2213/03

Abstract: A magnetic core of an electric motor includes a central portion and a plurality of teeth extending outwardly from the central portion, the teeth disposed along a circumferential direction of the central portion. Each tooth includes a tooth body, two neck portions and two crown portions, the neck portions respectively connecting the crown portions to the tooth body, the two crown portions respectively extending beyond opposite sides of the tooth body. Each of the two neck portions of each tooth has a minimum width which is 0.1˜0.3 times of the width of the tooth body. The present invention further provides an electric motor that employs the magnetic core which can increase the peak value of the cogging torque of the motor.

公开(公告)号：US20160315508A1

公开(公告)日：2016-10-27

申请号：US15201014

申请日：2016-07-01

Applicant: Johnson Electric S.A.

Inventor： Yue LI ,  Baoting LIU ,  Chuiyou ZHOU ,  Yong WANG ,  Ming CHEN ,  Xiaoning ZHU

IPC: H02K1/14 ,  H02K21/16 ,  H02K15/04 ,  H02K1/27 ,  H02K3/18

Abstract: A motor and methods for making and using same. The motor includes a stator having a first stator portion with first and second arcuate regions. The arcuate regions can receive a rotor with a magnetic pole and being concentrically arranged with the stator relative to a central axis. The stator can have one or more winding portions for being wound with a winding and extending from the first stator portion opposite the arcuate regions. When the winding is not energized, a first magnetic coupling between the first arcuate region and a selected magnetic pole is greater than a second magnetic coupling between the second arcuate region and the selected magnetic pole. A selected winding portion is angularly offset from the first arcuate region to advantageously enable movement of the rotor to initiate in either of two opposite directions relative to the selected winding portion when the winding is energized.

Abstract translation: 电动机及其制造和使用方法。 电动机包括具有第一和第二弧形区域的第一定子部分的定子。 弓形区域可以接收具有磁极的转子并且与定子相对于中心轴线同心地布置。 定子可以具有一个或多个绕组部分，用于缠绕绕组并且从与弓形区域相对的第一定子部分延伸。 当绕组没有通电时，第一弧形区域和所选择的磁极之间的第一磁耦合大于第二弧形区域和所选磁极之间的第二磁耦合。 所选择的绕组部分与第一弧形区域成角度地偏移，以有利地使得当绕组被通电时，转子能够相对于所选择的绕组部分在两个相反的方向中的任一个中启动。