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公开(公告)号：US20240055168A1
公开(公告)日：2024-02-15
申请号：US17885119
申请日：2022-08-10
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Michael W. Degner
CPC classification number: H01F7/02 , H01F41/0266 , B22F3/105 , B22F2202/05
Abstract: Magnets having various portions of different densities and resistivities are disclosed. In a refinement, the various portions may have the same composition but different physical structures. Unique dies may be used to during processing, such as during sintering to manufacture the magnets. The die may include conductive and non-conductive surfaces that contact the green magnetic powder mixture during sintering such that the electrical current applied to the magnetic powder mixture is managed by the conductive and non-conductive surfaces to provide unique and complex magnets. Methods of manufacturing the magnets with the dies such as field assisted sintering, i.e., spark plasma sintering, are also disclosed.
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公开(公告)号：US20230187130A1
公开(公告)日：2023-06-15
申请号：US17547809
申请日：2021-12-10
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Michael W. Degner
IPC: H01F41/02 , H01F1/053 , H01F1/10 , B29C64/153 , B29C64/393 , B33Y80/00 , B33Y70/00 , B33Y50/02
CPC classification number: H01F41/0246 , H01F41/0266 , H01F1/053 , H01F1/10 , B29C64/153 , B29C64/393 , B33Y80/00 , B33Y70/00 , B33Y50/02
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：US11631518B2
公开(公告)日：2023-04-18
申请号：US16556117
申请日：2019-08-29
Applicant: Ford Global Technologies, LLC
Inventor： Myung Ki Sung , Wanfeng Li , Leyi Zhu
Abstract: A power inductor includes a housing and a magnetic core disposed in the housing. The core includes a first segment and a second segment spaced apart from each other to define a gap. The first and second segments are supported in the housing such that the they are movable relative to each other to increase and decrease the size of the gap. A fluid having a positive thermal expansion coefficient is disposed in the housing such that expansion and contraction of the fluid due to change in temperature increases and decreases the gap, respectively.
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公开(公告)号：US11948733B2
公开(公告)日：2024-04-02
申请号：US16746116
申请日：2020-01-17
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Chuanbing Rong , Franco Leonardi , Michael W. Degner
CPC classification number: H01F41/0273 , H01F1/0556 , H01F1/0576 , H01F1/059 , H01F41/0266
Abstract: A method of processing an anisotropic permanent magnet includes forming anisotropic flakes from a hulk magnet alloy, each of the anisotropic flakes having an easy magnetization direction with respect to a surface of the flake and combining the anisotropic flakes with a binder to form a mixture. The method further includes extruding or rolling the mixture without applying a magnetic field such that the easy magnetization directions of the anisotropic flakes align to form one or more layers having a magnetization direction aligned with the easy magnetization directions of the anisotropic flakes, and producing the anisotropic permanent magnet from the layers having the magnetization direction such that the anisotropic permanent magnet has a magnetization with a specific orientation.
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公开(公告)号：US10737328B2
公开(公告)日：2020-08-11
申请号：US15427278
申请日：2017-02-08
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li
IPC: B22F9/04 , C22C12/00 , C22C22/00 , B07B7/08 , B07B7/086 , B07B7/10 , H01F1/047 , B02C23/08 , B02C19/06
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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Patent Agency Ranking
公开(公告)号：US09818516B2
公开(公告)日：2017-11-14
申请号：US14496612
申请日：2014-09-25
Applicant: Ford Global Technologies, LLC
Inventor： Wanfeng Li , C Bing Rong , Leyi Zhu , Feng Liang , Michael W. Degner , Jun Yang
CPC classification number: H01F1/0577 , B22F3/02 , B22F3/12 , B22F2998/10 , B22F2999/00 , C22C38/002 , C22C38/005 , B22F1/0003 , B22F3/105 , B22F2003/1054 , B22F2202/05 , B22F2202/13
Abstract: In at least one embodiment, a hybrid permanent magnet is disclosed. The magnet may include a plurality of anisotropic regions of a Nd—Fe—B alloy and a plurality of anisotropic regions of a MnBi alloy. The regions of Nd—Fe—B alloy and MnBi alloy may be substantially homogeneously mixed within the hybrid magnet. The regions of Nd—Fe—B and MnBi may have the same or a similar size. The magnet may be formed by homogeneously mixing anisotropic powders of MnBi and Nd—Fe—B, aligning the powder mixture in a magnetic field, and consolidating the powder mixture to form an anisotropic hybrid magnet. The hybrid magnet may have improved coercivity at elevated temperatures, while still maintaining high magnetization.
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公开(公告)号：US20240355514A1
公开(公告)日：2024-10-24
申请号：US18760904
申请日：2024-07-01
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Chuanbing Rong , Michael W. Degner
IPC: H01F1/057 , B22F10/28 , B33Y10/00 , B33Y70/00 , C22C38/00 , C22C38/06 , C22C38/10 , C22C38/12 , H01F41/02
CPC classification number: H01F1/057 , B33Y70/00 , C22C38/005 , C22C38/06 , C22C38/105 , C22C38/12 , H01F41/0253 , B22F10/28 , B22F2301/355 , B33Y10/00 , 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：US11923133B2
公开(公告)日：2024-03-05
申请号：US17537917
申请日：2021-11-30
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Franco Leonardi , Michael W. Degner
CPC classification number: H01F7/02 , B22F10/28 , B22F10/60 , B33Y10/00 , B33Y40/20 , B33Y80/00 , H01F1/057 , H01F41/0253 , B22F2301/45
Abstract: Permanent magnets and method of making the same are provided. The magnets include a magnetic layer having an insulation layer disposed thereon. The insulation layer is formed via additive manufacturing techniques such as laser melting such that that it has discrete phases including a magnetic phase and an insulating phase.
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公开(公告)号：US20240071666A1
公开(公告)日：2024-02-29
申请号：US18506227
申请日：2023-11-10
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Franco Leonardi , Michael W. Degner
CPC classification number: H01F7/02 , B22F10/28 , B22F10/60 , B33Y10/00 , B33Y40/20 , B33Y80/00 , H01F1/057 , H01F41/0253 , B22F2301/45
Abstract: Permanent magnets and method of making the same are provided. The magnets include a magnetic layer having an insulation layer disposed thereon. The insulation layer is formed via additive manufacturing techniques such as laser melting such that that it has discrete phases including a magnetic phase and an insulating phase.
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公开(公告)号：US20230170120A1
公开(公告)日：2023-06-01
申请号：US17537917
申请日：2021-11-30
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Wanfeng Li , Franco Leonardi , Michael W. Degner
CPC classification number: H01F7/02 , H01F1/057 , H01F41/0253 , B33Y10/00 , B33Y80/00 , B33Y40/20 , B22F10/28 , B22F10/60 , B22F2301/45
Abstract: Permanent magnets and method of making the same are provided. The magnets include a magnetic layer having an insulation layer disposed thereon. The insulation layer is formed via additive manufacturing techniques such as laser melting such that that it has discrete phases including a magnetic phase and an insulating phase.
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