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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：US11682932B2
公开(公告)日：2023-06-20
申请号：US17125117
申请日：2020-12-17
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Leyi Zhu , Chun Tang , Franco Leonardi , Michael W. Degner
Abstract: An electric machine stator includes a soft magnetic yoke having a cylindrical yoke body extending along a central axis, with an outer surface and an inner periphery defining a central opening about the central axis, and a plurality of soft magnetic stator teeth. Each stator tooth defines a first set of air pockets, and a second set of air pockets. An electric machine rotor and permanent magnet material with air pockets are also provided.
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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：US11264856B2
公开(公告)日：2022-03-01
申请号：US16438981
申请日：2019-06-12
Applicant: Ford Global Technologies, LLC
Inventor： Adeeb Ahmed , Kyi Shin Shiah , Jacob Krizan , Huifen Qiu , Joel Hetrick , Chun Tang
Abstract: An electric machine includes a stator core defining circumferentially arranged slots alternating between odd and even slots. Each slot has radial pin positions arranged in adjacent pairs to define radial layers. A hairpin winding includes a first path of interconnected hairpins that is disposed in the stator core such that, for each of the radial layers, the first path is disposed in the odd slots and the even slots a same number of times.
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公开(公告)号：US20210218305A1
公开(公告)日：2021-07-15
申请号：US16740798
申请日：2020-01-13
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Chun Tang , Adeeb Ahmed
Abstract: An electric machine includes a stator core and a hairpin winding. The stator core defines slots that are circumferentially arranged between an inner diameter and an outer diameter of the stator core. Each slot has a plurality of pin positions that is arranged in a direction that extends from the inner diameter toward the outer diameter. The hairpin winding has a plurality of paths of interconnected hairpins that correspond to a first electrical phase of the electric machine. The hairpins are arranged to occupy a portion of the pin positions according to a pattern that repeats at angular intervals along a circumference of the stator core. The pattern includes hairpins occupying each pin position within a first of the slots, harpins occupying exactly half the pin positions within a second of the slots, and harpins occupying exactly half the pin positions within a third of the slots.
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Patent Agency Ranking
公开(公告)号：US11018545B2
公开(公告)日：2021-05-25
申请号：US16053934
申请日：2018-08-03
Applicant: Ford Global Technologies, LLC
Inventor： Chun Tang , Huifen Qiu
Abstract: An electric machine winding assembly including a stator and windings is provided. The stator may define a central axis. The windings may extend from the stator and each may include a pair of conductor ends. Each conductor end may include a minor side and a major side. The windings are arranged with the stator such that each of the major sides are aligned along a circumferential conductor axis relative to the central axis to facilitate welding adjacent conductor ends to one another. Each of the windings may further include two portions defining a U shape. Each of the two portions may include a lower portion, a mid-portion, and an upper portion. One of the mid-portions may include a first bend defining a twist shape to orient the major sides of one of the pair of conductor ends along the circumferential conductor axis.
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公开(公告)号：US10965178B2
公开(公告)日：2021-03-30
申请号：US16202554
申请日：2018-11-28
Applicant: Ford Global Technologies, LLC
Inventor： Chun Tang , Adeeb Ahmed , Kyi Shin Shiah , Jacob Krizan , Joel Hetrick
Abstract: An electric machine includes a stator core defining slots and a hairpin winding path disposed in the slots. The winding path includes first and second hairpins having legs with same slot spans and twist with same slot spans. The hairpins are installed in the core such that one of the twists of the first hairpin crisscrosses with one of the twists of the second hairpin. A reverse jumper joins the twists that crisscross.
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公开(公告)号：US20210028662A1
公开(公告)日：2021-01-28
申请号：US16520547
申请日：2019-07-24
Applicant: Ford Global Technologies, LLC
Inventor： Chun Tang , Franco Leonardi , Michael W. Degner , Chuanbing Rong
IPC: H02K1/27
Abstract: A rotor for a permanent magnet electric machine has a lamination stack formed from a plurality of laminations arranged in a stack defining a void having a magnet-receiving portion and at least one flux barrier portion contiguous therewith. A magnet is disposed in the magnet-receiving portion, and some but not all of the laminations forming the stack include a positioner projecting into the flux barrier portion such that the positioners form a series of spaced-apart shelves retaining the magnet within the magnet-receiving portion. The shelves are spaced apart from one another by one or more of the laminations having no positioner.
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公开(公告)号：US20200235617A1
公开(公告)日：2020-07-23
申请号：US16252599
申请日：2019-01-19
Applicant: Ford Global Technologies, LLC
Inventor： Chun Tang , Joel Hetrick , Daniel Zu
IPC: H02K1/18
Abstract: An electric machine assembly including a housing and a stator is provided. The housing may define a cavity and an inner surface having pockets spaced radially about a housing central axis. The stator may be disposed within the cavity and define an outer surface having tabs spaced from one another radially about a stator central axis and each tab including opposing circumferential sides. The housing and stator may be arranged with one another such that each of the opposing circumferential sides contacts a side of a respective pocket to create interference therebetween. Each tab may further include a tab outer surface and each of the pockets may be sized such that a space is defined between each tab outer surface and a respective pocket side.
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公开(公告)号：US10707707B2
公开(公告)日：2020-07-07
申请号：US15379658
申请日：2016-12-15
Applicant: Ford Global Technologies, LLC
Inventor： Chun Tang
Abstract: A vehicle may include an electric machine. The electric machine may include a stator surrounding sections stacked to form a rotor. Each of the sections may have nested pairs of permanent magnets radially spaced from a rotational axis of the rotor. Corresponding pairs of permanent magnets of each of the sections may be aligned along a direction of the rotational axis. Corresponding chambers adjacent to the permanent magnets may have different shapes such that corresponding pole arc angles are different.
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