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公开(公告)号：US11575288B2
公开(公告)日：2023-02-07
申请号：US16740798
申请日：2020-01-13
发明人： Chun Tang , Adeeb Ahmed
摘要： 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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公开(公告)号：US20200044507A1
公开(公告)日：2020-02-06
申请号：US16053934
申请日：2018-08-03
发明人： Chun Tang , Huifen Qiu
摘要： 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：US11621594B2
公开(公告)日：2023-04-04
申请号：US17011593
申请日：2020-09-03
发明人： Chun Tang , Franco Leonardi , Michael W. Degner , Jacob Krizan
摘要： An electric machine rotor that is configured to rotate about a first axis includes a plurality of plates and plurality of permanent magnets. The plurality of plates are stacked along the first axis. Each of the plates defines V-shaped pairs of cavities. Each V-shaped pair of cavities defines a pole arc angle. Each cavity has a permanent magnet pocket and a magnetic field guide chamber extending radially outward from the permanent magnet pocket relative to the first axis. Offset angles between the magnetic field guide chambers and the permanent magnet pockets vary within each plate. The plates are stacked such that the permanent magnet pockets between adjacent plates are axially aligned and such that the magnetic field guide chambers between adjacent plates are axially offset. Each permanent magnet extends through a set of permanent magnet pockets.
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公开(公告)号：US11418076B2
公开(公告)日：2022-08-16
申请号：US16019051
申请日：2018-06-26
发明人： Chun Tang , Cyrille Goldstein , Jacob Krizan
摘要： An electric machine rotor includes a core, a first end plate, a second end plate, and a shaft. The core defines an internal cavity. The first and second end plates each define a central orifice and are respectively secured to opposing axial ends of the core. The shaft is disposed within the cavity and engages the first and second end plates within the central orifices to facilitate synchronized rotation of and torque transfer between the core and shaft.
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公开(公告)号：US11152825B2
公开(公告)日：2021-10-19
申请号：US16440121
申请日：2019-06-13
摘要： A rotor for an electric machine includes pairs of magnets with a bridge region therebetween. Lamination that comprise the rotor may define openings in the bridge region between the magnets of each of the pairs. A clip may be installed in the openings and a bonding material may fill the remainder of the bridge region.
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公开(公告)号：US11018567B2
公开(公告)日：2021-05-25
申请号：US15720754
申请日：2017-09-29
发明人： Feng Liang , Lusu Guo , Michael W. Degner , Wei Wu , Chun Tang
摘要： 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.
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公开(公告)号：US11728702B2
公开(公告)日：2023-08-15
申请号：US17488582
申请日：2021-09-29
CPC分类号： H02K1/28 , H02K1/276 , B60K6/26 , B60Y2200/91 , B60Y2200/92 , B60Y2400/604
摘要： A rotor for an electric machine includes pairs of magnets with a bridge region therebetween. Lamination that comprise the rotor may define openings in the bridge region between the magnets of each of the pairs. A clip may be installed in the openings and a bonding material may fill the remainder of the bridge region.
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公开(公告)号：US11616409B2
公开(公告)日：2023-03-28
申请号：US17176641
申请日：2021-02-16
发明人： Chun Tang , Franco Leonardi , Michael W. Degner , Jacob Krizan
摘要： An electric machine rotor includes a plurality of plates stacked along an axis of rotation. Each of the plates defines a plurality of cavities. Each cavity defines a pole arc angle, has at least one permanent magnet pocket, and has magnetic field guide chambers extending outward from the at least one permanent magnet pocket. Offset angles between the magnetic field guide chambers and the at least one permanent magnet pockets vary between at least two of the cavities of the plurality of cavities within each plate such that each plate defines at least two different pole arc angles. The plates are stacked such that the at least one permanent magnet pockets between adjacent plates are axially aligned and such that the magnetic field guide chambers between adjacent plates are axially offset.
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公开(公告)号：US20220069646A1
公开(公告)日：2022-03-03
申请号：US17011593
申请日：2020-09-03
发明人： Chun Tang , Franco Leonardi , Michael W. Degner , Jacob Krizan
摘要： An electric machine rotor that is configured to rotate about a first axis includes a plurality of plates and plurality of permanent magnets. The plurality of plates are stacked along the first axis. Each of the plates defines V-shaped pairs of cavities. Each V-shaped pair of cavities defines a pole arc angle. Each cavity has a permanent magnet pocket and a magnetic field guide chamber extending radially outward from the permanent magnet pocket relative to the first axis. Offset angles between the magnetic field guide chambers and the permanent magnet pockets vary within each plate. The plates are stacked such that the permanent magnet pockets between adjacent plates are axially aligned and such that the magnetic field guide chambers between adjacent plates are axially offset. Each permanent magnet extends through a set of permanent magnet pockets.
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公开(公告)号：US10523072B2
公开(公告)日：2019-12-31
申请号：US15182702
申请日：2016-06-15
发明人： Chun Tang , Wei Wu , Joel Hetrick
IPC分类号： H02K1/27
摘要： An electric machine may include a plurality of sections, each defining a permanent magnet pocket and a field formation chamber. The sections may be stacked to form a rotor such that when walls of the permanent magnet pockets are aligned from end to end, walls of the chambers of at least some of the sections are offset. An adjacent pair of the sections may have different chamber to pocket relative positions to define different pole arc angles. A difference between the first pole arc angle and the second pole arc angle may be equal to a slot pitch of a stator of the electric machine. The slot pitch may be 7.5 mechanical degrees. The chamber may be defined on a radially outward edge of the pocket. The chamber may taper in a radially outward direction.
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