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公开(公告)号：US12132354B2
公开(公告)日：2024-10-29
申请号：US17061568
申请日：2020-10-01
Applicant: HL MANDO CORPORATION
Inventor： Mazharul Chowdhury , Md Sariful Islam , Mohammad Islam
CPC classification number: H02K1/2766 , H02K1/02 , H02K1/246 , H02K21/14 , H02K29/03
Abstract: A rotor assembly of a motor is configured to be rotatable relative to a stator. The rotor assembly may comprise a permanent magnet rotor segment comprising permanent magnets, the permanent magnet rotor segment configured to be rotatable by a magnetic field generated by the permanent magnets; and a reluctance rotor segment comprising flux barriers, the reluctance rotor segment configured to be rotatable by magnetic reluctance formed by the flux barriers. The permanent magnet rotor segment and the reluctance rotor segment are axially stacked relative to each other so that at least a part of a first torque ripple generated by the permanent magnet rotor segment and at least a part of a second torque ripple generated by the reluctance rotor segment can cancel each other. The permanent magnet rotor segment may be a rare earth permanent magnet rotor, and the reluctance rotor segment may be a synchronous reluctance rotor.
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公开(公告)号：US11988728B2
公开(公告)日：2024-05-21
申请号：US17401235
申请日：2021-08-12
Applicant: HL MANDO CORPORATION
Inventor： Mazharul Chowdhury , Mohammad Islam , Christian Ross
CPC classification number: G01R33/10 , B62D15/021 , G01D5/147
Abstract: Position sensors, including linear position sensors, that utilize magnetic field(s) are disclosed. Disclosed sensors include flux emitters and sensor assemblies. The sensor assemblies include flux collectors that interact with magnetic fields from flux emitters and with a magnetism sensing device. Flux emitters have arrangements of magnets that when combined with the sensor assembly can provide a constantly increasing or a constantly decreasing signal across a range of relative movement.
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Patent Agency Ranking
公开(公告)号：US11705766B2
公开(公告)日：2023-07-18
申请号：US17024652
申请日：2020-09-17
Applicant: HL MANDO CORPORATION
Inventor： Mazharul Chowdhury , Md Sariful Islam , Mohammad Islam , Abraham Tesfamicael
Abstract: A permanent magnet motor comprises: a stator comprising teeth; and a rotor rotatable relative to the stator, the rotor having a plurality of poles, wherein each pole of the rotor comprises a pair of magnet retention slots, each magnet retention slot accommodating a magnet. Surfaces of the teeth of the stator facing the rotor are flat or have an arc shape. Each magnet retention slot may have a plurality of angled slot surfaces forming a first barrier around a corner of the magnet positioned closest to an outer surface of the rotor. At least three second barriers are positioned around a mid-axis extending along between the pair of the magnet retention slots. Each magnet retention slot comprises a slot surface slanted or curved relative to a second side surface of the magnet facing an inner surface of the rotor to form a third barrier around an end of the second side surface of the magnet.
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公开(公告)号：US12206319B2
公开(公告)日：2025-01-21
申请号：US17191681
申请日：2021-03-03
Applicant: HL MANDO CORPORATION
Inventor： Mohammad Islam , Christian Ross , Christopher William Lutz , Tomy Sebastian , Md Sariful Islam
IPC: B60K7/00 , B60B27/00 , G01B7/30 , G01D5/14 , H02K1/2706 , H02K7/00 , H02K7/08 , H02K7/102 , H02K9/20 , H02K9/22 , H02K11/00 , H02K11/21
Abstract: A vehicle wheel assembly comprises: a wheel for mounting a tire thereon; and an in-wheel motor mounted in the inner space of the wheel and comprising: a rotor connected to the wheel, wherein a magnet is mounted to a center portion of the rotor rotatably coupled with a bearing assembly and arranged at a rotation axis of the wheel, a stator configured to drive the rotor, a rotary sensor disposed in sensing relationship with the magnet mounted to the center portion of the rotor, the rotary sensor configured to be responsive to rotation of the magnet for generating a signal, and an electronic device comprising a circuit board and electronics; and a brake actuator configured to apply brake to the wheel or the rotor. The electronics mounted on the circuit board comprise a single electronic control unit configured to control both the in-wheel motor and the brake actuator.
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公开(公告)号：US11686789B2
公开(公告)日：2023-06-27
申请号：US17401233
申请日：2021-08-12
Applicant: HL MANDO CORPORATION
Inventor： Mazharul Chowdhury , Mohammad Islam , Christian Ross
CPC classification number: G01R33/10 , B62D15/021 , G01D5/147
Abstract: Position sensors, including linear position sensors, that utilize magnetic field(s) are disclosed. Disclosed sensors include flux emitters and sensor assemblies. The sensor assemblies include flux collectors that interact with magnetic fields from flux emitters and with a magnetism sensing device. Flux emitters have arrangements of magnets that when combined with the sensor assembly can provide a constantly increasing or a constantly decreasing signal across a range of relative movement.
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公开(公告)号：US12237742B2
公开(公告)日：2025-02-25
申请号：US18085502
申请日：2022-12-20
Applicant: HL MANDO CORPORATION
Inventor： Md Sariful Islam , Mohammad Islam , Amina Shrestha , Scott Blehm
Abstract: A motor comprises: a stator assembly; and a rotor assembly configured to be rotatable relative to the stator assembly, wherein the stator assembly comprises a stator core having stator slots; and electrical conductors at least partially disposed in the stator slots, the electrical conductors having hairpin winding segments, each of the hairpin winding segments comprising: first and second legs, each of the first and second legs having an in-slot portion disposed in one of the stator slots, and an endturn portion formed between the first and second legs. The endturn portion formed between the first and second legs is thicker than the in-slot portion of the first and second legs, disposed in the stator slot. Further, thicknesses of open end portions formed at ends of the first and second legs are different from a thickness of the in-slot portion of the first and second legs, disposed in the stator slot.
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公开(公告)号：US11791676B2
公开(公告)日：2023-10-17
申请号：US16920327
申请日：2020-07-02
Applicant: HL MANDO CORPORATION
Inventor： Md Sariful Islam , Mohammad Islam
Abstract: A permanent magnet motor comprises: a rotor assembly configured to be rotatable relative to a stator, wherein the rotor assembly defines magnet pockets, a segmented permanent magnet comprising a plurality of magnet segments, which include one or more magnet segments of the segmented permanent magnet have different magnetic material from another or other magnet segments of the segmented permanent magnet, is disposed in each of the magnet pockets of the rotor assembly. The segmented permanent magnet is segmented in a circumferential direction. The one or more magnet segments of the segmented permanent magnet comprises magnetic material having higher coercivity, or operable at a higher temperature, than the another or other magnet segments of the segmented permanent magnet. The one or more magnet segments of the segmented permanent magnet comprise rare earth permanent magnet, high energy density magnet, samarium cobalt (Sm—Co) magnet or neodymium iron boron (Nd—Fe—B) magnet.
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