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公开(公告)号：US20240266888A1
公开(公告)日：2024-08-08
申请号：US18217923
申请日：2023-07-03
发明人： Ted T. Lin
CPC分类号： H02K1/146 , H02K37/04 , H02K37/14 , H02K2213/03
摘要： A two-phase bipolar 3.6° step motor is described in which the stator winding assembly has eight stator poles organized into decoupled phase groups with two distinct angular pole separations, 14.4°×[(4n±1)/4] between poles of the same group, and 14.4°×[(4m±1)/2] between adjacent poles of different groups, where n and m are positive whole numbers. Three stator teeth on each stator pole have a stator tooth pitch of 13.2° to minimize detent torque for smoother, more accurate stepping. A rotor has alternating magnetic north and south rotor teeth around a circumference thereof with a 14.4° rotor tooth pitch angle. The stator poles are wound with electromagnetic coil windings that can be driven in a series of phases to magnetically interact with the rotor.
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公开(公告)号：US20240235352A9
公开(公告)日：2024-07-11
申请号：US17987352
申请日：2022-11-15
发明人： Yusheng Zou , Jian Yao
IPC分类号： H02K21/24 , H02K1/14 , H02K1/2793 , H02K3/28
CPC分类号： H02K21/24 , H02K1/146 , H02K1/2793 , H02K3/28
摘要： An axial flux electric motor includes a stator including a stator segment having a support frame formed with an opening defined by a continuous edge. A stator winding segment is arranged in the opening of the stator segment. The stator winding segment has an outer surface. A thermal interface material (TIM) is disposed between the outer surface of the stator winding segment and the continuous edge defining the opening in the support frame
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公开(公告)号：US20240195272A1
公开(公告)日：2024-06-13
申请号：US18556966
申请日：2022-04-28
申请人： RENAULT S.A.S. , WHYLOT
发明人： Jere KOLEHMAINEN
CPC分类号： H02K15/022 , H02K1/146
摘要： Disclosed is a method for manufacturing a stator for an axial-flux electric machine, the stator including a stator body, a plurality of teeth, and at least one coil formed of an electrically conductive wire, each tooth being formed of a first part and a second part, the method including steps of: obtaining a support part in which the teeth are each positioned in a precise attitude; forming an envelope of electrically insulating material intended to surround the second part of each tooth; winding the electrically conductive wire around the envelope; and fixing an end of the second part of each tooth to a face of the stator body.
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公开(公告)号：US11996731B2
公开(公告)日：2024-05-28
申请号：US17285476
申请日：2019-09-05
发明人： Tatsuya Saito , Tomoyuki Ueno , Hijiri Tsuruta , Yuichi Nakamura , Yuka Fukunaga
摘要： A core used in an axial-gap rotating electric device includes an annular back yoke and a plurality of teeth protruding in an axial direction that is perpendicular to a first flat surface of the back yoke. The plurality of teeth are provided on the first flat surface at intervals in a circumferential direction. The back yoke and the teeth are constituted of an integrally-molded powder compact. A first curved section that connects a peripheral surface of each tooth and the first flat surface of the back yoke is provided at a corner between the tooth and the back yoke. The first curved section has a curvature radius ranging between 0.2 mm and 1.5 mm inclusive.
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公开(公告)号：US11979059B2
公开(公告)日：2024-05-07
申请号：US17299886
申请日：2019-12-17
发明人： Yasuo Ohsugi , Ryu Hirayama , Kazutoshi Takeda
IPC分类号： H02K1/18 , C09J133/08 , H02K1/12 , H02K1/14
CPC分类号： H02K1/185 , C09J133/08 , H02K1/12 , H02K1/146 , H02K1/18
摘要： A laminated core includes a plurality of electrical steel sheets stacked in a thickness direction, each of the electrical steel sheets includes an annular core back part; a plurality of fastening parts are provided in the core back part at intervals in a circumferential direction; an adhesion region is formed on an outer circumferential side from the fastening parts in the core back part; and a non-adhesion region is formed on an inner circumferential side from the fastening parts in the core back part.
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公开(公告)号：US20240146124A1
公开(公告)日：2024-05-02
申请号：US18277205
申请日：2022-02-17
发明人： Lloyd Conway ASH
CPC分类号： H02K1/146 , H02K1/276 , H02K3/522 , H02K21/16 , H02K2203/12
摘要： The present invention relates to electric machines, rotors for electric machines, stators for electric machines, stator core assemblies and methods of assembly associated therewith. In embodiments a stator core comprises an articulated array of core segments each segment being hingedly connected to at least one adjacent core segment such that the core has a first configuration in which the core segments form an open array and a second configuration in which the core segments form a closed annular array. Each core segment may have an L-shaped profile comprising: a body defining a segment of an annular ring; and pole tooth projecting radially from the annular ring segment. The body comprises first and second complementary interface surfaces at respective circumferentially opposing sides. One of the interface surfaces extends through a circumferential footprint of the pole tooth.
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公开(公告)号：US11955841B2
公开(公告)日：2024-04-09
申请号：US17275782
申请日：2019-09-18
发明人： Sung Woo Chang , Seung Yeol Lee
摘要： The present invention provides a stator and a motor assembly including the same. The stator includes: a stator core disposed outside a rotor core and having an inner surface inclined with respect to a rotation axis of a rotor; a plurality of coil-wound teeth extending from the inner surface of the stator core towards the rotation axis, wherein a coil is wound around each of the plurality of coil-wound teeth; and openings formed by sidewalls of the plurality of coil-wound teeth and the inner surface of the stator core, wherein a cross-sectional area of the openings changes along a direction of the rotation axis.
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公开(公告)号：US11909259B2
公开(公告)日：2024-02-20
申请号：US17256574
申请日：2018-08-28
发明人： Takaya Shimokawa , Hiroki Aso , Ryogo Takahashi
CPC分类号： H02K1/146 , F04D25/06 , F24F1/0018 , H02K1/148 , H02K7/14 , H02K15/022 , H02K21/16 , H02K2213/03
摘要： A stator includes a first core that includes a first tooth extending in a first radial direction and a first core back extending in a circumferential direction and a second core that includes a second tooth extending in a second radial direction and a second core back extending in the circumferential direction. The first core back includes a depression formed with at least a first face and a second face in an outer peripheral surface of the first core back and a connection part facing the second core back. The stator satisfies θ1
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公开(公告)号：US20240048008A1
公开(公告)日：2024-02-08
申请号：US18382583
申请日：2023-10-23
申请人： EVR MOTORS LTD
发明人： Victor Kislev , Oleg Gaspar , Ruslan Shabinski , Eliyahu Rozinsky
IPC分类号： H02K1/18 , H02K1/02 , H02K1/2786 , H02K1/14 , H02K21/22
摘要： An electric machine may include an stator and a rotatable rotor. At least one of the stator or the rotor may include a plurality of multi-part trapezoidal teeth with an electromagnetic coil disposed around each tooth.
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公开(公告)号：US11894720B2
公开(公告)日：2024-02-06
申请号：US17286943
申请日：2019-12-11
发明人： Tatsuya Saito , Yuichi Nakamura , Tomoyuki Ueno
摘要： A core used in an axial gap type rotating electrical machine includes an annular yoke having a plurality of through-holes disposed in a circumferential direction, and a plurality of columnar teeth disposed in the circumferential direction of the yoke, each of the plurality of columnar teeth including one end inserted into each of the plurality of through-holes. The yoke and each of the teeth are composed of a powder compact separate from each other, and the one end of each of the teeth is off-center in the through-hole.
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