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    POWER INDUCTOR WITH VARIABLE WIDTH AIR GAP
    2.
    发明申请
    POWER INDUCTOR WITH VARIABLE WIDTH AIR GAP 有权

    公开(公告)号：US20210065958A1

    公开(公告)日：2021-03-04

    申请号：US16556117

    申请日：2019-08-29

    Applicant: Ford Global Technologies, LLC

    Inventor： Myung Ki SUNG ,  Wanfeng LI ,  Leyi ZHU

    IPC: H01F27/12 ,  H01F27/28 ,  H01F27/24 ,  H01F27/02

    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.

    Motor Core Having Separately Processed Rotor and Stator Laminations
    4.
    发明申请
    Motor Core Having Separately Processed Rotor and Stator Laminations 审中-公开
    具有独立加工的转子和定子层压的电机芯

    公开(公告)号：US20160099635A1

    公开(公告)日：2016-04-07

    申请号：US14505790

    申请日：2014-10-03

    Applicant: Ford Global Technologies, LLC

    Inventor： Feng LIANG ,  Leyi ZHU ,  C Bing RONG

    IPC: H02K15/12 ,  H02K15/02

    CPC classification number: 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.

    Abstract translation: 公开了具有单独处理的定子和转子叠片的电动机芯的形成方法。 定子和转子叠片可以由单个电钢源（例如片材或线圈）形成。 所述方法可以包括形成和热处理钢源的第一部分以形成具有第一微结构（例如，平均晶粒尺寸）和磁性和机械性能（例如，磁芯损耗）的定子叠片。 它们可进一步包括形成和热处理钢源的第二部分以形成具有不同于第一和与定子叠片不同的第一和非磁性和机械特性的第二微结构的转子叠片。 定子叠片可能具有改进的磁芯损耗和磁导率性能，并且转子叠片可能具有改进的机械性能。 通过分离处理，每个核心可能具有适合他们将在操作中体验的条件的特性。

    POWER INDUCTOR WITH VARIABLE WIDTH AIR GAP
    5.
    发明公开
    POWER INDUCTOR WITH VARIABLE WIDTH AIR GAP 审中-公开

    公开(公告)号：US20230245811A1

    公开(公告)日：2023-08-03

    申请号：US18297197

    申请日：2023-04-07

    Applicant: FORD GLOBAL TECHNOLOGIES, LLC

    Inventor： Myung Ki SUNG ,  Wanfeng LI ,  Leyi ZHU

    IPC: H01F27/12 ,  H01F27/02 ,  H01F27/24 ,  H01F27/28

    CPC classification number: H01F27/12 ,  H01F27/02 ,  H01F27/24 ,  H01F27/28

    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 they are movable relative to each other to increase and decrease the size of the gap. A passive actuator is disposed in the housing and is configured to move the second segment relative to the first segment to increase and decrease the size of the gap. The passive actuator includes a shape-memory alloy configured to expand as temperature of the inductor increases to urge the first and second segments apart to increase the gap and to contract as the temperature decreases so that the first and second segments move towards each other to decrease the gap.

    ELECTRIC MACHINE HAVING MAGNETICALLY MODIFIED REGION
    8.
    发明申请
    ELECTRIC MACHINE HAVING MAGNETICALLY MODIFIED REGION 审中-公开

    公开(公告)号：US20190115794A1

    公开(公告)日：2019-04-18

    申请号：US15782888

    申请日：2017-10-13

    Applicant: Ford Global Technologies, LLC

    Inventor： Feng LIANG ,  Alfredo R. MUNOZ ,  Leyi ZHU ,  Michael W. DEGNER

    IPC: H02K1/16 ,  H02K1/18 ,  H02K1/02 ,  H02K15/02 ,  H02K15/00

    Abstract: An electric machine includes a stator and a rotor. The stator has a yoke fitted over a ring that has a plurality of teeth with gaps therebetween for fitting metal windings. The ring of teeth has an inner circumference that is closed and to connect the teeth, and an outer circumference with open gaps or slots between the teeth. The metal windings are fitted through the open outer circumference. Regions of the closed inner circumference between the teeth are treated such that the region's magnetic permeability is reduced relative to the remainder of the stator. The reduction in magnetic permeability provides a magnetic flux barrier between the teeth.

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