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公开(公告)号：US11804742B2
公开(公告)日：2023-10-31
申请号：US17056155
申请日：2019-06-17
Applicant: Whylot SAS
Inventor： Loic Mayeur , Romain Ravaud
CPC classification number: H02K1/2795 , H02K1/02 , H02K1/30 , H02K15/03 , H02K16/04 , H02K21/24 , H02K2213/12
Abstract: The invention relates to a rotor (1) of an electromagnetic motor or generator having a body comprising an inner hub (2) which is concentric to a central axis (7) of rotation of the rotor (1), branches (3) extending radially with respect to the central axis (7) of rotation from the inner hub (2) towards a hoop (8) forming a circular outer periphery of the rotor (1), at least one magnet (10) being housed in each space delimited between two adjacent branches (3), each having a width which decreases with distance from the inner hub (2) and terminates by a tapered tip (3b) against the hoop (8). Each magnet is in the form of a magnet structure (10) consisting of a plurality of individual magnets (4) which are secured together by a fiber-reinforced insulating material, each individual magnet (4) being elongated in shape by extending in the axial direction of the rotor (1).
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公开(公告)号：US11128186B2
公开(公告)日：2021-09-21
申请号：US16494994
申请日：2018-03-20
Applicant: WHYLOT SAS
Inventor： Romain Ravaud
IPC: H02K3/46 , H02K1/27 , H02K21/12 , H02K1/02 , H02K15/03 , H02K21/24 , H02K41/03 , H02K1/12 , H02K5/04 , H01F7/02 , H01F41/02 , H02K1/04 , H02K1/28 , H02K15/12 , H02K16/04 , H02K7/00
Abstract: A motor or electromagnetic generator with a rotor (3) and at least one stator (1, 2), the rotor (3) having permanent magnets (12) rotating around a median shaft and the stator (1, 2) having windings (5). The rotor (3) comprises magnet structures forming magnet poles composed of a plurality of unit magnets (15), covering discs (17) being axially arranged on each of two opposite axial faces of the rotor (3), the covering discs (17) being made of a composite material, the covering discs (17) and the magnet structures (12) being coated in an outer coating layer of composite material defining the outer contour of said at least one rotor (3). The stator (1, 2) comprises concentric windings (5) comprising a series of blocks (4) with the windings (5) wound around each block (4), the blocks (4) being rigidly attached to each other.
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公开(公告)号：US20210265884A1
公开(公告)日：2021-08-26
申请号：US17261625
申请日：2019-09-23
Applicant: Whylot SAS
Inventor： Loic MAYEUR , Romain RAVAUD
Abstract: A rotor (1) of an axial-flux electromagnetic machine having a body comprising an internal hub (2) concentric to the axis of rotation (7). Branches (3) extend radially in relation to the axis of rotation (7) from the internal hub (2) toward a binding band (8) which forms an external circular rim of the rotor (1). In each space defined between two adjacent branches (3) there is a magnet structure (10) comprising a plurality of magnets (4). The body is constituted by a plurality of stacked layers of composite containing fibers bonded by a resin. The fibers of each layer are oriented in a different predetermined direction (F1, F2) for two adjacent and stacked layers. In addition, a covering skin is located on each of two opposite faces of the rotor body, made up of a plurality of stacked layers of composite containing fibers bonded by a resin.
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4.发明申请公开(公告)号：US20170303038A1
公开(公告)日：2017-10-19
申请号：US15127884
申请日：2015-03-03
Applicant: WHYLOT SAS , UNIVERSITE DU MAINE , CNRS
Inventor： Etienne Gaviot , Mehran ERZA , Frédéric POLET , Lionel CAMBERLAIN , Romain RAVAUD
Abstract: The present invention relates to an acoustic signal supply circuit of at least one loudspeaker (HP) incorporating a filtering device of the resonance peak of said at least one loudspeaker (HP) occurring at a given frequency, characterized in that the filtering device of the resonance peak of said at least one loudspeaker (HP) is incorporated either into the first instrumentation ground circuit or in the feedback loop, this filtering device being purely electrical in the form an impedance incorporated in the first instrumentation ground circuit or in the feedback loop, the impedance parameters being predetermined as a function of the resonance peak to be filtered of said at least one loudspeaker (HP).
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5.发明申请公开(公告)号：US20170171660A1
公开(公告)日：2017-06-15
申请号：US15127851
申请日：2015-03-03
Applicant: WHYLOT SAS , UNIVERSITE DU MAINE , CNRS
Inventor： Etienne GAVIOT , Mehran ERZA , Frédéric POLET , Lionel CAMBERLAIN , Romain RAVAUD
IPC: H04R3/08
CPC classification number: H04R3/08
Abstract: The present invention relates to an acoustic signal supply circuit of at least one loudspeaker (HP), this circuit comprising a filtering device of the resonance peak occurring at a given frequency of the supply current, characterized in that the filtering device of the peak is incorporated in a first branch bypassing the intermediate circuit between at least two converters (A, A0), this filtering device being purely electrical in the form of an impedance (Z3) connected, on the one hand, at a point on the intermediate circuit and, on the other hand, to a ground instrumentation, the impedance being called RLC (Z3) for comprising at least one first resistor (R3), at least one first capacitor (C3) and at least one first inductor (L3) arranged in series, the parameters of the first resistor (R3), the first capacitor (C3) and the first inductor (L3) being predetermined as a function of the resonance peak to be filtered.
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Patent Agency Ranking
公开(公告)号：US20240022129A1
公开(公告)日：2024-01-18
申请号：US18256886
申请日：2021-12-03
Applicant: Whylot SAS
Inventor： Vasile MIHAILA
Abstract: The invention relates to a stator of an electric motor stator equipped with coils (3, 3a, 3b) and comprising an oil cooling system for the coils. The coils (3, 3a, 3b) are arranged leaving a gap (15) between them and defining inside and outside circumferences. The system comprises oil inlet and outlet manifolds pierced by orifices to send or recover oil to or from the coils. Each inlet orifice (10) is associated with a respective coil (3, 3a, 3b), one of the manifolds surrounding the inside circumference while the other manifold surrounds the outside circumference, a flow of oil exiting each inlet orifice (19) circulating mostly in the gap (15) between its associated coil (3) and at least one of the two adjacent coils (3a, 3b) and then exiting via an outlet orifice.
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公开(公告)号：US11431209B2
公开(公告)日：2022-08-30
申请号：US16754058
申请日：2018-12-13
Applicant: Whylot SAS
Inventor： Vasile Mihaila , Romain Ravaud
Abstract: The invention relates to a stator (8) for an electromagnetic motor or generator comprising windings (4) and a magnetic circuit, the stator (8) comprising a yoke with a circular or polygonal shape and winding support teeth (3). Each winding (4) rests on a tooth (3) while at least partly surrounding a winding support (13, 14), each winding support (13, 14) comprising or being associated with snap snap-fitting means (15′) that cooperate with complementary snap-fitting means (3′) supported by a tooth (3) associated with the winding support (13, 14) so that the winding support (13, 14) is fastened to the associated tooth (3).
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8.发明申请公开(公告)号：US20210218322A1
公开(公告)日：2021-07-15
申请号：US16769180
申请日：2019-01-07
Applicant: Whylot SAS
Inventor： Vasile MIHAILA , Loic MAYEUR , Romain RAVAUD
Abstract: PROBLEM TO BE SOLVED: To provide an axial gap motor excellent in heat-dissipation properties, and a stator core and a stator suitable for components of the motor. ;SOLUTION: The stator core 10 is provided with an annular yoke part 11, and a plurality of columnar teeth 12 protruding on one face of the yoke part 11. A stator is configured by arranging a coil C, with coils wound thereon, on the outer periphery of each tooth 12. A refrigerant groove 14 is provided on the protruding side face of each tooth 12 in the yoke part 11. The refrigerant grooves 14 increase contact areas between the core 10 and a refrigerant, thereby effectively cooling the core 10. Consequently, the core 10 is excellent in heat-dissipation properties. COPYRIGHT: (C)2009,JPO&INPIT
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公开(公告)号：US20210218290A1
公开(公告)日：2021-07-15
申请号：US16769181
申请日：2019-01-18
Applicant: Whylot SAS
Inventor： Romain RAVAUD
Abstract: The invention relates to a unitary magnet (1) that has an elongate shape and an at least partially ovoid contour as the unitary magnet (1) comprises a first portion (1a) forming a body of the unitary magnet (1) that has a larger cross-section and extends over a greater portion of the length of the unitary magnet (1) than at least one second longitudinal end portion (1b) that points towards an associated longitudinal end of the magnet and has a decreasing cross-section towards the longitudinal end.
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公开(公告)号：US20200295622A1
公开(公告)日：2020-09-17
申请号：US16753686
申请日：2018-11-05
Applicant: Whylot SAS
Inventor： Bruno CARSALADE , Romain RAVAUD , Vasile MIHAILA
Abstract: The present invention relates to a motor (M) or axial flux electromagnetic generator with at least one rotor and at least one stator housed in a housing (1), the housing (1) having internally a cooling fluid circuit and surrounding the motor (M) while allowing only an end portion of the driveshaft of the rotor to protrude therefrom, the electromagnetic motor (M) or the generator having electronic control and power means (4). The cooling circuit has a common element that cools at least one rotor and one stator and also the electronic control and power means (4).
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