-
公开(公告)号：US11632875B2
公开(公告)日：2023-04-18
申请号：US17462306
申请日：2021-08-31
发明人： Andrew F. Pinkos , John Mecca
摘要： A wireless device charger configured to produce an alternating magnetic field, thereby inducing an alternating electrical current within a capture coil of a personal electronic device proximate to the wireless device charger, said wireless device charger includes a source coil having a ferrite element configured to generate the alternating magnetic field, a housing formed of a thermally conductive material in thermal communication with the ferrite element, and an air movement device configured to produce an air flow across a surface of the housing flowing from an air inlet to an air outlet, thereby reducing a housing temperature. The surface of the housing defines a plurality of fins extending along the housing in a direction of the air flow. At least one fin in the plurality of fins has a non-symmetric surface, thereby creating turbulence in the air flow.
-
公开(公告)号：US11631997B2
公开(公告)日：2023-04-18
申请号：US15563497
申请日：2016-03-23
摘要： A power transmission device for a noncontact power supply device includes a resonant circuit that outputs an alternating magnetic flux by power from a power source circuit, and switching elements for making the resonant circuit generate an alternating magnetic flux, and transmits power to a power receiving coil of a power reception device by the alternating magnetic flux. A power transmission controller of the power transmission device includes a transmission mode of supplying alternating power to the resonant circuit by repeating ON and OFF of switching elements by controlling switching elements. ON time in one cycle of operation of each of switching elements used in the transmission mode is a first fixed value. Accordingly, the power transmission device in a simplified configuration can be provided.
-
公开(公告)号：US11631523B2
公开(公告)日：2023-04-18
申请号：US17100753
申请日：2020-11-20
摘要： Disclosed herein is a symmetric split planar transformer in the context of a DC-DC isolated converter. The symmetric split planar transformer reduces or eliminates asymmetry in the distribution of parasitic capacitance across the isolation barrier going from one end to another end of a primary coil, and as a result, undesirable electromagnetic interference (EMI) due to common mode dipole emission across the isolation barrier may be reduced. In some embodiments, the primary winding is split into at least a first coil and a second coil, each occupying a different area side-by-side on a substrate. The transformer is symmetric in the sense that a capacitive coupling of the first coil to a secondary winding is the same as a capacitive coupling of the second coil to the secondary winding, such that common mode EMI may be reduced. Each coil may include stacked spiral coil portions in multiple metal planes to increase inductive density across the isolation barrier. Furthermore, in some embodiments the first and second coils may have opposite spiral directions such that far field radiation effect from the transformer may be reduced.
-
公开(公告)号：US11628305B2
公开(公告)日：2023-04-18
申请号：US17497653
申请日：2021-10-08
申请人： Medtronic, Inc.
IPC分类号： A61N1/372 , H01F38/14 , H02J50/10 , H02J50/90 , A61B5/00 , A61N1/378 , H02J50/80 , H02J7/02 , H02J5/00
摘要： Systems, devices and methods allow inductive recharging of a power source located within or coupled to an implantable medical device while the device is implanted in a patient. The recharging system/device in some examples includes a first electrical coil and a second electrical coil configured to generate opposing magnetic fields forming a resultant magnetic field within a recharging envelope located between the coils. A third coil of the implantable medical device may be positioned within the recharging envelope so that the resultant magnetic field is imposed on the third coil, causing electrical energy to be induced in the third coil, the induced electrical energy used to recharge a power source of an implantable medical device coupled to the third coil, and/or to power operation of the implantable medical device.
-
公开(公告)号：US11626759B2
公开(公告)日：2023-04-11
申请号：US17482106
申请日：2021-09-22
发明人： Arik Rofe , Elieser Mach , Oola Greenwald , Guy Raveh , Moti Ashery , Ilya Gluzman , Moti Kdoshim
摘要： A system and method for inductively providing electrical power at a plurality of power levels to electrical devices. The system may include an inductive power outlet unit conductively coupled to a power supply and an inductive power receiver unit associated with the electrical device. The inductive power outlet unit includes a driver device operable to generate power at a plurality of power levels and electrical power is transferred to the electrical device at a power level selected from the plurality of power levels, in accordance with electrical power requirements of the electrical device. The power receiver may be operable in a plurality of modes having a secondary inductor configured to operate selectively with a plurality of inductance values.
-
公开(公告)号：US11626758B2
公开(公告)日：2023-04-11
申请号：US17244562
申请日：2021-04-29
申请人： LG ELECTRONICS INC.
发明人： Jinmoo Park , Jeongkyo Seo , Beomseok Chae , Jaesung Lee , Jihyun Lee
IPC分类号： H02J50/12 , H01F38/14 , B60L53/38 , B60L53/122 , B60L53/124 , B60L53/126 , H02J7/00 , H02J50/90
摘要： A wireless power transmitter configured to transfer power to a wireless power receiver, including a coil assembly comprising first and second bottom coils placed adjacent to each other in a line and each consisting of a single layer of 11 turns and a top coil stacked on the first and second bottom coils and consisting of a single layer of 12 turns; and a full-bridge inverter. The first and second bottom coils and the top coil have a substantially rectangular frame structure with a through hole in the center, wherein the top coil lies on a plane surface in the middle between the first and second bottom coils, a distance from the center of the first and second bottom coils to the center of the top coil is set to a range of 21 mm to 25 mm, the first and second bottom coils have a height of 48 mm to 50 mm and a width of 43 mm to 45 mm, and the through hole in the first and second bottom coils has a height of 25 mm to 27 mm and a width of 21 mm to 23 mm, the top coil has a height of 45 mm to 47 mm and a width of 48.5 mm to 50.5 mm, and the through hole in the top coil has a height of 20 mm to 22 mm and a width of 24.5 mm to 26.5 mm, the first and second bottom coils and the top coil have a thickness of 0.9 mm to 1.3 mm, the wireless power transmitter uses an input voltage of the full-bridge inverter to control an amount of power which is transferred, the input voltage has a range of 1 V to 18 V, wherein an operating frequency to control the amount of the power is within a range of 140 kHz to 150 kHz, and the first and second bottom coils and the top coil have a inductance value within a range of 10.6 μH to 12.0 μH.
-
公开(公告)号：US11616397B2
公开(公告)日：2023-03-28
申请号：US17369259
申请日：2021-07-07
申请人： Medtronic, Inc.
发明人： Eric A. Schilling
IPC分类号： H02J50/10 , H01F38/14 , H01F27/24 , A61M60/178 , A61M60/875
摘要： A transcutaneous energy transfer system (TETS) that includes external and internal coils that have permeable cores is provided. According to one aspect, the TETS includes an external coil having disposed in proximity thereto, a first set of at least one permeable core that is wound by windings of the external coil. The TETS also includes an internal coil having disposed in proximity thereto, for each permeable core disposed in proximity to the external coil, a corresponding permeable core that is wound by windings of the internal coil.
-
公开(公告)号：US20230075207A1
公开(公告)日：2023-03-09
申请号：US17984666
申请日：2022-11-10
申请人： APPLE INC.
摘要： Electronic devices according to embodiments of the present technology may include a battery. The devices may include a nanocrystalline foil. The devices may include a wireless charging coil seated on the nanocrystalline foil. The devices may also include an integrated circuit configured to operate the wireless charging coil in a wireless charging transmission mode.
-
公开(公告)号：US11601108B2
公开(公告)日：2023-03-07
申请号：US16274680
申请日：2019-02-13
发明人： Yuichi Sawahara
摘要： According to one embodiment, in an isolator, a first capacitive element is arranged on a first signal line. The first capacitive element has one end electrically connected to an input side circuit and having another end electrically connected to an output side circuit. A second capacitive element is arranged on a second signal line. The second capacitive element having one end electrically connected to the input side circuit and having another end electrically connected to the output side circuit. A first inductive element has one end electrically connected to a first node between the first capacitive element in the first signal line and the output side circuit. A second inductive element has one end electrically connected to a second node between the second capacitive element in the second signal line and the output side circuit.
-
公开(公告)号：US20230055987A1
公开(公告)日：2023-02-23
申请号：US17795365
申请日：2021-01-28
申请人： KYOCERA Corporation
发明人： Takeshi MUNEISHI
摘要： A planar coil (10) of the present disclosure includes a base (1) including a first surface (1a), a metal layer (2) located on the first surface (1a) and including a through hole (2a) and a plurality of voids (3), and a first fixing tool (8) inserted through the through hole (2a) and fixing the metal layer (2) to the first surface (1a) side of the base (1).
-
-
-
-
-
-
-
-
-
搜索结果
5496 条记录 (耗时 0.046 秒)