公开(公告)号：US11979068B2

公开(公告)日：2024-05-07

申请号：US17334085

申请日：2021-05-28

Applicant: Ford Global Technologies, LLC

Inventor： Leyi Zhu ,  Michael W. Degner ,  Feng Liang

IPC: H02K15/03 ,  B60L50/51 ,  H02K1/02 ,  H02K1/12 ,  H02K1/276 ,  H02K7/00 ,  H02K15/12

CPC classification number: H02K15/03 ,  B60L50/51 ,  H02K1/02 ,  H02K1/12 ,  H02K1/276 ,  H02K7/006 ,  H02K15/12 ,  Y10T29/49012 ,  Y10T29/53143

Abstract: A rotor includes a rotor core lamination. The rotor core lamination includes a first metal alloy that at least partially defines adjacent magnet pockets proximate an outer periphery of the rotor core lamination. The rotor core lamination further includes a second metal alloy different than the first metal alloy that forms at least a portion of a bridge that extends between the magnet pockets. The rotor core lamination further includes permanent magnets disposed in the magnet pockets at opposing sides of the second metal alloy.

公开(公告)号：US20220130607A1

公开(公告)日：2022-04-28

申请号：US17572193

申请日：2022-01-10

Applicant: Ford Global Technologies, LLC

Inventor： Wanfeng Li ,  Feng Liang ,  Michael W. Degner

IPC: H01F41/02 ,  B22F10/20 ,  H01F7/02 ,  H01F1/053 ,  B22F10/28

Abstract: A magnet structure includes columnar grains of rare earth permanent magnet phase aligned in a same direction and arranged to form bulk anisotropic rare earth alloy magnet having a boundary defined by opposite ends of the columnar grains and lacking triple junction regions, and rare earth alloy diffused onto opposite ends of the bulk anisotropic rare earth alloy magnet.

公开(公告)号：US10707713B2

公开(公告)日：2020-07-07

申请号：US15871615

申请日：2018-01-15

Applicant: Ford Global Technologies, LLC

Inventor： Feng Liang ,  Franco Leonardi ,  Becky Sue Morris ,  Michael W. Degner

IPC: H02K3/12 ,  H02K15/00 ,  H02K3/28 ,  H02K15/04 ,  H02K15/06

Abstract: An electric machine includes a stator core defining slots having radial layers that each include adjacent first and second pin positions. Pins are disposed in corresponding ones of the slots and are interconnected to form a winding path. The path occupies the first and second positions of each layer, and, for each of the corresponding slots, the pins are in a same layer.

公开(公告)号：US10432047B2

公开(公告)日：2019-10-01

申请号：US15664626

申请日：2017-07-31

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Feng Liang ,  Lusu Guo ,  Michael W. Degner

IPC: H02K1/27 ,  H02K21/14

Abstract: A rotor for a permanent magnet machine includes a first and second stack of same laminations. The laminations are configured to rotate about an axis and define poles and axial grooves on a circumferential surface that are asymmetric about a centerline of each of the poles. The stacks are coupled such that the second stack is flipped relative to the first stack and centerlines of the first stack are aligned with centerlines of the second stack.

公开(公告)号：US10432043B2

公开(公告)日：2019-10-01

申请号：US15381303

申请日：2016-12-16

Applicant: Ford Global Technologies, LLC

Inventor： Chun Tang ,  Wei Wu ,  Feng Liang ,  Michael W. Degner

IPC: H02K1/27 ,  H02K1/14 ,  H02K3/32

Abstract: An electric machine having a rotor is disclosed. The rotor defines a cavity containing a magnet, an outer periphery, and a top bridge therebetween that includes at least two slots each having a length in a radial direction. A maximum of the lengths is closest to a Q-axis and a minimum of the lengths is closest to a D-axis. As the electric machine is operating, a rate of change in airgap flux density through the top bridge differs.

公开(公告)号：US20190131066A1

公开(公告)日：2019-05-02

申请号：US15795208

申请日：2017-10-26

Applicant: Ford Global Technologies, LLC

Inventor： C. Bing Rong ,  Feng Liang ,  Michael Degner ,  Wanfeng Li

IPC: H01F41/02 ,  H01F1/057 ,  B22F1/02

Abstract: A grain boundary diffusion method for a rare-earth (RE) magnet is provided. The method includes coating particles of the RE magnet with a coating material. Each RE magnet particle includes a plurality of grains. The coated particles are then simultaneously heat treated and compacted. The heat treated, compacted, and coated particles are then formed into a rare earth magnet. In a form of the method, the heat treated, compacted, and coated particles are hot deformed prior to being formed into a rare earth magnet. Another form of the method achieves the grain boundary diffusion without first sintering the rare earth magnet.

公开(公告)号：US20190103795A1

公开(公告)日：2019-04-04

申请号：US15720754

申请日：2017-09-29

Applicant: Ford Global Technologies, LLC

Inventor： Feng Liang ,  Lusu Guo ,  Michael W. Degner ,  Wei Wu ,  Chun Tang

IPC: H02K23/04 ,  H02K1/17 ,  H02K1/12 ,  H02K23/42 ,  H02K11/22

Abstract: A permanent magnet machine includes a rotor and an irregular polyhedron shaped magnet assembly. The rotor may define at least one magnet opening and may be configured to rotate within a circular opening defined by a stator. The irregular polyhedron shaped magnet assembly may be disposed in the magnet opening and may define a magnetization direction, wherein a height along the magnetization direction and perpendicular with a lamination plane of the rotor is greater at both ends than at a central portion disposed therebetween.

公开(公告)号：US10199910B2

公开(公告)日：2019-02-05

申请号：US14505790

申请日：2014-10-03

Applicant: Ford Global Technologies, LLC

Inventor： Feng Liang ,  Leyi Zhu ,  C Bing Rong

IPC: H02K15/02

Abstract: Methods for forming a motor core having separately processed stator and rotor laminations are disclosed. The stator and rotor laminations may be formed from a single electrical steel source, such as a sheet or coil. The methods may include forming and heat treating a first portion of the steel source to form stator laminations having a first microstructure (e.g., mean grain size) and magnetic and mechanical properties (e.g., core loss). They may further include forming and heat treating a second portion of the steel source to form rotor laminations having a second microstructure that is different from the first and magnetic and mechanical properties that are different from the stator laminations. The stator laminations may have improved core loss and permeability performance and the rotor laminations may have improved mechanical properties. By separating the processing, each core may have properties tailored to conditions that they will experience in operation.

公开(公告)号：US20180262069A1

公开(公告)日：2018-09-13

申请号：US15451550

申请日：2017-03-07

Applicant: Ford Global Technologies, LLC

Inventor： Feng Liang ,  Leyi Zhu ,  Lusu Guo ,  Michael W. Degner

IPC: H02K1/27 ,  H02K21/14

CPC classification number: H02K1/2766

Abstract: An electric machine includes a unitary, single material substrate defining a rotor lamination including a first region having a predefined magnetic permeability. The rotor lamination includes an arc-shaped second region having a magnetic permeability less than the first region. The second region is oriented such that it impedes flux associated with magnets contained by the first region and perpendicular to quadrature flux field lines associated with the magnets.

公开(公告)号：US20180109155A1

公开(公告)日：2018-04-19

申请号：US15292191

申请日：2016-10-13

Applicant: Ford Global Technologies, LLC

Inventor： Alfredo R. Munoz ,  Feng Liang ,  Michael W. Degner

IPC: H02K3/12 ,  H02K1/14 ,  H02K1/27 ,  H02K3/30

CPC classification number: H02K3/12 ,  H02K1/146 ,  H02K1/165 ,  H02K1/2706 ,  H02K1/2766 ,  H02K3/30

Abstract: An electric machine may include a rotor. The electric machine may include a stator surrounding the rotor having teeth defining slots having at least two cross-sectional areas housing windings having uniform cross-sectional areas that fill each of the cross-sectional areas of the slots to substantially similar proportions relative to other slots such that slots housing windings having different phases have different cross-sectional areas than slots housing windings having same phases.