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公开(公告)号：US10347406B2
公开(公告)日：2019-07-09
申请号：US14867064
申请日：2015-09-28
Applicant: Ford Global Technologies, LLC
Inventor： Wanfeng Li
Abstract: An internally segmented magnet is disclosed. The magnet may include a first layer of a permanent magnetic material, a second layer of a permanent magnetic material, and an insulating layer separating the first and second layers. The insulating layer may include a ceramic mixture of at least a first ceramic material and a second ceramic material. The mixture having a melting point of up to 1,100° C. and may be a eutectic, or near eutectic, composition. The magnet may be formed by forming a first layer of powdered permanent magnetic material, depositing an insulating layer over the first layer, depositing a second layer of powdered permanent magnetic material over the insulating layer to form an internally segmented magnet stack, and sintering the magnet stack. The ceramic materials may include a halogen and an alkaline earth metal, alkali metal, or a metal having a +3 or +4 oxidation state.
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公开(公告)号：US20180221959A1
公开(公告)日：2018-08-09
申请号：US15427278
申请日：2017-02-08
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li
CPC classification number: B22F9/04 , B02C19/063 , B02C23/08 , B07B7/08 , B07B7/086 , B07B7/10 , B22F2009/044 , B22F2999/00 , C22C12/00 , C22C22/00 , H01F1/047 , C22C2202/02
Abstract: A method of increasing volume ratio of magnetic particles in a MnBi alloy includes operating a jet miller fed with a MnBi alloy powder containing magnetic particles and non-magnetic particles with gas flow parameters selected such that, only for the magnetic particles, a gas drag force is greater than a centrifugal force within the jet miller to separate the magnetic particles from the non-magnetic particles.
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公开(公告)号：US12237105B2
公开(公告)日：2025-02-25
申请号：US17547809
申请日：2021-12-10
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Michael W. Degner
IPC: H01F41/02 , B29C64/153 , B29C64/393 , B33Y50/02 , B33Y70/00 , B33Y80/00 , H01F1/053 , H01F1/10
Abstract: Permanent magnets and methods of making the same are disclosed herein. The permanent magnets include a 3D-printed, i.e., additively manufactured, framework and an infiltrate such that there is a discrete magnetic phase and a discrete non-magnetic phase or two discrete magnetic phases. The infiltrate may provide superior strength, elasticity or magnetic properties.
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公开(公告)号：US20240420879A1
公开(公告)日：2024-12-19
申请号：US18334196
申请日：2023-06-13
Applicant: Ford Global Technologies, LLC
Inventor： Wanfeng Li , Franco Leonardi , Michael Degner
Abstract: Methods and systems for demagnetizing a rotor. The method includes, in one example, adjusting a position of magnetic poles mounted on a frame in a demagnetization system in relation to a first electric machine rotor, and decreasing the magnetization of the first electric machine rotor via operation of the demagnetization system to generate an electromagnetic field.
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公开(公告)号：US11920224B2
公开(公告)日：2024-03-05
申请号：US17572193
申请日：2022-01-10
Applicant: Ford Global Technologies, LLC
Inventor： Wanfeng Li , Feng Liang , Michael W. Degner
IPC: C22C33/02 , B22F10/28 , B22F10/36 , B22F10/38 , B22F12/20 , C22C38/00 , H01F1/053 , H01F7/02 , H01F41/02
CPC classification number: C22C33/0207 , B22F10/28 , B22F10/38 , H01F1/053 , H01F7/02 , H01F41/0253 , H01F41/0273 , H01F41/0293 , B22F10/36 , B22F12/20 , B22F2203/11 , B22F2301/20 , B22F2301/355 , B22F2301/45 , C22C38/005 , C22C2202/02 , B22F2999/00 , B22F10/28 , C22C2202/02
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.
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Patent Agency Ranking
公开(公告)号：US20230290546A1
公开(公告)日：2023-09-14
申请号：US17585934
申请日：2022-01-27
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Chuanbing Rong , Michael W. Degner
CPC classification number: H01F1/057 , B33Y70/00 , C22C38/005 , C22C38/06 , C22C38/105 , C22C38/12 , H01F41/0253 , B22F10/28 , C22C2202/02
Abstract: A permanent magnet formed by additively manufacturing magnetic phases and buffer phases is disclosed. The buffer phase(s) may improve performance, enhance mechanical properties and allow the magnet to better tolerate stresses such that defects such as cracking do not occur or are less likely to occur. The buffer phase may be a magnetic or non-magnetic material.
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公开(公告)号：US20230253843A1
公开(公告)日：2023-08-10
申请号：US18304924
申请日：2023-04-21
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Franco Leonardi , Chuanbing Rong , Chun Tang , Wanfeng Li , Michael W. Degner
Abstract: A rotor for an electric machine includes a core comprised of stacked laminations that define pockets between a hub portion and a pole portion. Each of the pockets are configured to receive magnetic material and define center cavities between regions of magnetic material to eliminate a flux leakage path between the magnetic materials. A cured mixture including an epoxy and a magnetic powder is disposed within the center cavities. The magnetic material may include sintered magnets and a cured mixture.
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公开(公告)号：US11637467B2
公开(公告)日：2023-04-25
申请号：US16567720
申请日：2019-09-11
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Franco Leonardi , Chuanbing Rong , Chun Tang , Wanfeng Li , Michael W. Degner
Abstract: A rotor for an electric machine includes a core comprised of stacked laminations that define pockets between a hub portion and a pole portion. Each of the pockets are configured to receive magnetic material and define center cavities between regions of magnetic material to eliminate a flux leakage path between the magnetic materials. A cured mixture including an epoxy and a magnetic powder is disposed within the center cavities. The magnetic material may include sintered magnets and a cured mixture.
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公开(公告)号：US11610718B2
公开(公告)日：2023-03-21
申请号：US16579117
申请日：2019-09-23
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Chuanbing Rong , Michael W. Degner
IPC: H01F27/24 , H01F27/245 , H01F3/10 , H01F41/02 , H01F27/255
Abstract: An inductor that is configured to store energy in a magnetic field includes a wire and a core. The wire is configured to deliver electrical current to the inductor to generate the magnetic field. The core is disposed radially about the wire. The core comprises magnetic particles that are suspended in a non-magnetic matrix. The magnetic particles are arranged such that a magnetic permeability of the core increases in a direction that extends radially outward from the wire along a cross-sectional area of the magnetic core from a first region that is adjacent to the wire to a second region that is adjacent to an outer periphery of the magnetic core.
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公开(公告)号：US11417462B2
公开(公告)日：2022-08-16
申请号：US16414862
申请日：2019-05-17
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Michael W. Degner , Wanfeng Li , Franco Leonardi
Abstract: A method of forming an annealed magnet includes positioning a magnetizing array ring concentrically with a ring of bulk magnetic material to form an assembly, the magnetizing array ring having a magnetic field defining directions for orienting grains of the ring of bulk magnetic material, placing the assembly in a furnace, and operating the furnace to anneal the ring of bulk magnetic material and grow the grains in the directions. A magnetic array assembly includes a furnace; and an assembly including (i) a ring of bulk magnetic material having grains and (ii) a magnetizing array ring concentric with the ring of bulk magnetic material, and having a magnetic field defining directions for orienting the grains during growth thereof in a presence of heat from the furnace.
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