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公开(公告)号：US20230170750A1
公开(公告)日：2023-06-01
申请号：US17537873
申请日：2021-11-30
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Adeeb Ahmed
IPC: H02K3/28
CPC classification number: H02K3/28
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 electrical paths of interconnected hairpins disposed within the slots. Each of the plurality of electrical paths of interconnected hairpins has a plurality of typical hairpins and an atypical hairpin. Each typical hairpin has a crown pitch of eight, nine, or ten, slots and opposing outwardly extending twist pitches along each end of the typical hairpin of four and one half slots. Each atypical hairpin, has an outwardly extending twist pitch and an inwardly extending twist pitch on opposing respective ends of the atypical hairpin.
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公开(公告)号：US11575285B2
公开(公告)日：2023-02-07
申请号：US17115949
申请日：2020-12-09
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Jacob Krizan , Adeeb Ahmed
Abstract: An electric machine includes a stator and a rotor. The stator defines a central orifice and has an inner diameter. The rotor has an outer diameter and is disposed within the stator. An airgap is defined between inner diameter and the outer diameter. The rotor defines a plurality of cavities. The rotor has magnets disposed within each of the cavities. The magnets define a plurality of pole arc angles. Each pole arc angle is centered about a D-axis. The rotor has an outer periphery. The outer periphery forms smooth spline curves positioned within each pole arc angle. The smooth spline curves deviate radially inward relative to the outer diameter.
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公开(公告)号：US11539255B2
公开(公告)日：2022-12-27
申请号：US16828192
申请日：2020-03-24
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Adeeb Ahmed , Wei Wu
Abstract: An electric machine includes a stator core defining slots and a single-layer winding disposed in the core and having first and second parallel paths. Each path includes hairpins interconnected to form a continuous circuit between a terminal and a neutral. The hairpins of the first path include a first type of hairpins each having a first leg, a second leg, a crown connecting between the legs, an outwardly extending twist joined to the first leg, and an inwardly extending twist joined to the second leg, wherein the legs are spaced apart by a span of five slots, and a second type of hairpins each having a first leg, a second leg, a crown connecting between the legs, an inwardly extending twist joined to the first leg, and an outwardly extending twist joined to the second leg, wherein the legs are spaced apart by a span of seven slots.
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公开(公告)号：US11909285B2
公开(公告)日：2024-02-20
申请号：US17537873
申请日：2021-11-30
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： 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 electrical paths of interconnected hairpins disposed within the slots. Each of the plurality of electrical paths of interconnected hairpins has a plurality of typical hairpins and an atypical hairpin. Each typical hairpin has a crown pitch of eight, nine, or ten, slots and opposing outwardly extending twist pitches along each end of the typical hairpin of four and one half slots. Each atypical hairpin, has an outwardly extending twist pitch and an inwardly extending twist pitch on opposing respective ends of the atypical hairpin.
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公开(公告)号：US20230170751A1
公开(公告)日：2023-06-01
申请号：US17537896
申请日：2021-11-30
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Adeeb Ahmed
IPC: H02K3/28
CPC classification number: H02K3/28
Abstract: An electric machine includes a stator core and hairpin windings. 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 of the stator core toward the outer diameter of the stator core. The hairpin windings have a plurality of electrical paths of interconnected hairpins disposed within the slots. Each of the plurality of electrical paths of interconnected hairpins have a plurality of typical hairpins and a plurality of atypical hairpins. Each typical hairpin has first and second opposing inwardly extending twist portions. Each atypical hairpin has a third inwardly extending twist portion and an outwardly extending twist portion disposed on an opposing end of the atypical hairpin relative to the third inwardly extending twist portion.
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Patent Agency Ranking
公开(公告)号：US11575288B2
公开(公告)日：2023-02-07
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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公开(公告)号：US20220181927A1
公开(公告)日：2022-06-09
申请号：US17115949
申请日：2020-12-09
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Jacob Krizan , Adeeb Ahmed
Abstract: An electric machine includes a stator and a rotor. The stator defines a central orifice and has an inner diameter. The rotor has an outer diameter and is disposed within the stator. An airgap is defined between inner diameter and the outer diameter. The rotor defines a plurality of cavities. The rotor has magnets disposed within each of the cavities. The magnets define a plurality of pole arc angles. Each pole arc angle is centered about a D-axis. The rotor has an outer periphery. The outer periphery forms smooth spline curves positioned within each pole arc angle. The smooth spline curves deviate radially inward relative to the outer diameter.
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公开(公告)号：US12237795B2
公开(公告)日：2025-02-25
申请号：US18084682
申请日：2022-12-20
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Matthew Penne , Yang Xu , Jonathan Hair , Adeeb Ahmed
Abstract: A vehicle includes an electric machine including a rotor. The vehicle further includes a traction battery configured to supply electric power to the electric machine. The vehicle further includes a wheel mechanically coupled to the electric machine. The vehicle further includes one or more controllers programmed to, responsive to detecting a battery temperature below a threshold and the vehicle being parked, rotate the rotor to a preset position such that the wheel rotates.
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公开(公告)号：US11368066B2
公开(公告)日：2022-06-21
申请号：US16839661
申请日：2020-04-03
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Adeeb Ahmed , Jacob Krizan
Abstract: An electric machine includes a stator core defining slots and a winding disposed in the core and having three phases. Each of the phases has at least two parallel paths including hairpins interconnected to form at least two continuous circuits between a terminal and a neutral. The hairpins of each path include: a first type of hairpins (first hairpins) each having first and second legs spaced apart by a span of five slots; a second type of hairpins (second hairpins) each having first and second legs spaced apart by a span of seven slots; and a third type of hairpins (first hairpins) each having first and second legs spaced apart by a span of five or seven slots.
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公开(公告)号：US11309761B2
公开(公告)日：2022-04-19
申请号：US16828781
申请日：2020-03-24
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Adeeb Ahmed
Abstract: A three-phase electric machine includes a stator core defining slots, a terminal associated with one of the three phases, and a neutral. A first phase of hairpin windings is disposed in the core and has first and second parallel paths that are each continuous between the terminal and the neutral. The first path includes a first hairpin having a first leg disposed in a first of the slots and a second leg disposed in a second of the slots that is five slots away from the first slot. The first path further includes a second hairpin having a first leg disposed in a third of the slots and a second leg disposed in the second slot, wherein the second slot is seven slots away from the third slot.
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