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公开(公告)号：US12132368B2
公开(公告)日：2024-10-29
申请号：US17745907
申请日：2022-05-17
发明人： Tobias Engelhardt , Stefan Oechslen
摘要： A stator of an electric machine includes: a laminated stator core having sheet-metal blanks, which have slots; and stator windings, which are arranged in the slots of the laminated stator core together with slot insulation, such that, within the slots, a respective slot insulation is positioned between the sheet-metal blanks and the stator windings in order to electrically insulate the stator windings from a sheet-metal material of the sheet-metal blanks, and such that, when viewed in an axial direction, the stator windings protrude from the slots, project laterally with respect to the laminated stator core, and form winding overhangs laterally adjacent to the laminated stator core. When viewed in a radial direction, coolant flow channels are formed radially on an inside and/or radially on an outside, directly adjacent to the slots accommodating the stator windings. The stator windings accommodated in the slots of the laminated stator core are impregnated.
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2.发明公开公开(公告)号：US20240339880A1
公开(公告)日：2024-10-10
申请号：US18626626
申请日：2024-04-04
发明人： Hiroshi TANGE , Weihua HUANG , Qi CONG
摘要： An annular silicon steel sheet, a circular wire motor assembly, a circular wire motor, and a powertrain. The annular silicon steel sheet includes a plurality of open slots, each open slot penetrates the silicon steel sheet in an axial direction of the silicon steel sheet, and a projection of each open slot in the axial direction of the silicon steel sheet includes a first curve segment, a second curve segment, and a third curve segment. The first curve segment and the third curve segment are oppositely arranged in a circumferential direction of the silicon steel sheet, a bending direction of the first curve segment is away from a bending direction of the third curve segment, and a bending direction of the second curve segment is away from an opening of the open slot. The open slots improve the performance of the circular wire motor and the powertrain.
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公开(公告)号：US12113413B2
公开(公告)日：2024-10-08
申请号：US17515517
申请日：2021-10-31
发明人： Franco Leonardi , Michael W. Degner , Man Prakash Gupta , Christopher White , Steven White , Gary Thomas Martini , Singar Rathnam
CPC分类号： H02K3/12 , H02K3/30 , H02K15/0056 , H02K15/024 , B60K1/00
摘要： A vehicle, electric machine, and method of manufacturing an electric machine include a stator having teeth extending from a yoke portion toward a rotor and defining slots between adjacent teeth with windings positioned within the slots, wherein the slots are coated with an electrically insulating material having an arcuate surface exiting the slots and extending at least partially over the teeth on at least one end face of the stator to form a winding guide for bending/positioning the windings. The winding guide may be formed by a molded epoxy that replaces insulating paper slot liners while providing a template for forming the hairpin bends of end windings.
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公开(公告)号：US12081073B2
公开(公告)日：2024-09-03
申请号：US18398484
申请日：2023-12-28
申请人： EVR MOTORS LTD
发明人： Oleg Gaspar , Victor Kislev , Ruslan Shabinski , Eliyahu Rozinsky
IPC分类号： H02K1/18 , H02K1/02 , H02K1/14 , H02K1/2786 , H02K21/22 , H02K1/16 , H02K1/20 , H02K1/2793 , H02K3/12 , H02K3/14 , H02K3/28 , H02K3/487 , H02K3/493 , H02K3/50 , H02K3/52 , H02K5/18 , H02K9/19 , H02K9/22
CPC分类号： H02K1/187 , H02K1/02 , H02K1/14 , H02K1/146 , H02K1/2786 , H02K21/22 , H02K1/165 , H02K1/185 , H02K1/20 , H02K1/2793 , H02K3/12 , H02K3/14 , H02K3/28 , H02K3/487 , H02K3/493 , H02K3/50 , H02K3/525 , H02K5/18 , H02K9/19 , H02K9/22 , H02K9/227 , H02K2201/03
摘要： An electric machine includes a plurality of electromagnetic coils arranged circumferentially about the axis of rotation. Each coil defines a trapezoidally-shaped and tapered coil opening. The electric machine also includes a plurality of yokes that extend in an axial direction and a plurality of teeth. At least one of the plurality of yokes is tapered in the axial direction, and at least one tooth extends from each of the plurality of yokes. The plurality of teeth are each tapered in a radial direction to enable the plurality of teeth to fit within a corresponding trapezoidally-shaped and tapered coil opening.
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公开(公告)号：US20240283313A1
公开(公告)日：2024-08-22
申请号：US18143668
申请日：2023-05-05
发明人： Kun-Sheng Wang , Yu Yang
摘要： A brushless direct-current machine is provided, comprising a casing; a body in the casing; a motor in the body; a stator coil bidirectionally wound through slots but not empty slots; and a set of planetary gears. The duty ratio of pulse-width modulation is adjusted by using the three-phase windings of the stator coil to change a current flowing through. A controller switches the current direction of the windings for producing changes in magnetic field. Between the polarity of the stator and the polarities of magnets of a rotor, power is generated owing to the simultaneous functions of same-pole repulsion and opposite-pole attraction for controlling the rotation of the rotor. The 3 empty slots are used to break the original magnetic field into parts to make the rotation force lighter and driving effect better. Thus, an activating current is lowered, and energy and electricity are saved effectively.
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公开(公告)号：US12062954B2
公开(公告)日：2024-08-13
申请号：US17273603
申请日：2019-07-29
发明人： Tomohiro Fukuda , Shin Onose , Takeshi Konno , Yasuhiro Shimada , Kenichi Nakayama , Hisaya Shimizu , Mitsue Hashimoto
IPC分类号： H02K15/00 , H02K1/16 , H02K3/02 , H02K3/12 , H02K3/28 , H02K3/38 , H02K3/48 , H02K3/50 , H02K15/02 , H02K15/10
CPC分类号： H02K15/0081 , H02K1/16 , H02K3/02 , H02K3/12 , H02K3/28 , H02K3/38 , H02K3/48 , H02K3/50 , H02K15/024 , H02K15/105 , H02K2213/03
摘要： This disclosure is directed to a stator of a rotary electric machine. The stator includes a stator coil having a welding portion of segment conductors. Each of the segment conductors includes an exposed conductor wire portion. The exposed conductor includes a root portion adjacent to an insulating coating. A thickness of the insulating coating is 50 μm or more. The predetermined amount of displacement is 1±0.4 times or 2±0.4 times the thickness of the insulating coating. A length of the transition portion is 0.5 times or more and 2 times or less of a thickness of the conductor wire.
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公开(公告)号：US20240250566A1
公开(公告)日：2024-07-25
申请号：US18562662
申请日：2022-06-09
发明人： Florian HURKA , Walter WISSMACH
摘要： A power tool having a motor is provided, wherein the motor includes a rotor and a stator, and wherein the stator includes a first winding and a second winding, wherein the windings are designed in such a way that the windings allow operation of the motor of the power tool at substantially full speed, but at substantially half the power compared with the comparison motor. In the comparison motor, the stator coils are substantially completely wrapped with a continuous wire layer. method for operating such a power tool and a method for carrying out charge equalization between two accumulators in a power tool is also provided. The double-wound stator can be used in conjunction with a bridge circuit made up of motor inverters and stator coils to allow charge equalization between two accumulators in a power tool.
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公开(公告)号：US20240235295A1
公开(公告)日：2024-07-11
申请号：US18610171
申请日：2024-03-19
申请人： Linear Labs, Inc.
发明人： Fred E. Hunstable
CPC分类号： H02K1/278 , H02K1/02 , H02K1/2773 , H02K3/12 , H02K21/24 , H02K1/148 , H02K1/17 , H02K3/04 , H02K2213/03
摘要： Disclosed are various embodiments for a new and improved multi-tunnel motor and controller for an electric motor, where the motor controller is able to dynamically modify the number of phases and pole count of the electric machine in order to reduce the torque output and increase speed.
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公开(公告)号：US12021423B2
公开(公告)日：2024-06-25
申请号：US17605727
申请日：2019-05-30
摘要： A novel dynamo-electrical machine is provided that can inhibit an increase in the height of a coil end positioned toward a turn portion and improve the cooling performance around the turn portion of a segment coil. A segment coil 31 includes a first linear portion 34r, a second linear portion 34a, and a turn portion 33 including a top portion 33c. The first linear portion 34r is inserted into a specified slot 22. The second linear portion 34a is inserted into another particular slot 22 different from the specified slot 22. The turn portion 33 extends from one end face portion of a stator core 21 toward the outside of the axial direction of the stator core 21 and connects the first linear portion 34r and the second linear portion 34a. The linear portions 34r and 34a of the multiple segment coils 31 are inserted and placed in the slots 22 in a layering manner from the inner periphery to the outer periphery in the radial direction. A bent portion 37 is formed between each of the linear portions 34r and 34a and the turn portion of the segment coils 31 layered in the radial direction. The bent portion 37 tilts the top portion 33c of the turn portion 33 toward the end face of the stator core 21.
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公开(公告)号：US20240195236A1
公开(公告)日：2024-06-13
申请号：US18079202
申请日：2022-12-12
发明人： Chin-Feng CHANG , Chih-Meng CHU , Zhi-Zheng WU , Chen-Hui CHANG
摘要： A motor stator has an annular stator core, and a plurality of tooth portions spaced on the inner surface of the annular stator core which has a slot formed on each of two sides of each of the tooth portions. Each of the tooth portions has a coil wound and a portion of the coil is located in the two slots of each of the tooth portions. Each of the coils is formed by a metal wire coiled around a bobbin several times from the inner side to the outer side. The bobbin has an inner guide frame and an outer guide frame, both of them have a structure with a bottom plate and a side plate that are arranged vertically so that the coil can be attached to the bobbin to miniaturize the motor stator.
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