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公开(公告)号：US20240283301A1
公开(公告)日：2024-08-22
申请号：US18649495
申请日：2024-04-29
Applicant: Apple Inc.
Inventor： Andro Radchenko , Vaneet Pathak , Martin Schauer , Cheung-Wei Lam , Rahul A. Sabnani
CPC classification number: H02J50/70 , H01F27/2885 , H01F27/36 , H01F27/363 , H01F38/14 , H02J50/10 , H02J50/12 , H02J50/402
Abstract: Wireless power transmitting devices according to embodiments of the present technology may include a contact surface configured to support one or more wireless power receiving devices. The wireless power transmitting devices may include a plurality of coils. The wireless power transmitting devices may also include a shield positioned between the plurality of coils and the contact surface. The shield may include one or more shield members, each shield member axially aligned with a separate coil of the plurality of coils, and may include a multilayer structure exhibiting various conductivities.
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公开(公告)号：US20210065965A1
公开(公告)日：2021-03-04
申请号：US17096788
申请日：2020-11-12
Applicant: Apple Inc.
Inventor： Jouya Jadidian , Vaneet Pathak , Martin Schauer , Cheung-Wei Lam , Darshan R. Kasar , Christopher S. Graham , Andro Radchenko
Abstract: A shield for redirecting magnetic field generated from a plurality of transmitter coils includes a ferromagnetic structure divided into segments by a plurality of boundary regions, each segment comprises a first material having a first magnetic permeability and each boundary region comprises a second material having a second magnetic permeability lower than the first magnetic permeability, where the plurality of boundary regions are configured to resist a propagation of magnetic field from a first area of the ferromagnetic structure to a second area of the ferromagnetic structure, where the first area intercepts the magnetic field generated from at least one active transmitter coil of the plurality of transmitter coils.
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公开(公告)号：US20210099022A1
公开(公告)日：2021-04-01
申请号：US17119900
申请日：2020-12-11
Applicant: Apple Inc.
Inventor： Jouya Jadidian , Martin Schauer , Andro Radchenko , Cheung-Wei Lam , Ketan Shringarpure , Vaneet Pathak
Abstract: A wireless power system uses a wireless power transmitting device to transmit wireless power to wireless power receiving devices. The wireless power transmitting device has wireless power transmitting coils that extend under a wireless charging surface. Non-power-transmitting coils and magnetic sensors may be included in the wireless power transmitting device. During wireless power transfer operations, control circuitry in the wireless power transmitting device adjusts drive signals applied to the coils to reduce ambient magnetic fields. The drive signal adjustments are made based on device type information and other information on the wireless power receiving devices and/or magnetic sensor readings from the magnetic sensors. In-phase or out-of-phase drive signals are applied to minimize ambient fields depending on device type.
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公开(公告)号：US20190199144A1
公开(公告)日：2019-06-27
申请号：US15980401
申请日：2018-05-15
Applicant: Apple Inc.
Inventor： Jouya Jadidian , Martin Schauer , Andro Radchenko , Cheung-Wei Lam , Ketan Shringarpure , Vaneet Pathak
CPC classification number: H02J50/70 , H01F27/2823 , H01F27/29 , H01F27/38 , H01F38/14 , H02J7/025 , H02J50/12
Abstract: A wireless power system uses a wireless power transmitting device to transmit wireless power to wireless power receiving devices. The wireless power transmitting device has wireless power transmitting coils that extend under a wireless charging surface. Non-power-transmitting coils and magnetic sensors may be included in the wireless power transmitting device. During wireless power transfer operations, control circuitry in the wireless power transmitting device adjusts drive signals applied to the coils to reduce ambient magnetic fields. The drive signal adjustments are made based on device type information and other information on the wireless power receiving devices and/or magnetic sensor readings from the magnetic sensors. In-phase or out-of-phase drive signals are applied to minimize ambient fields depending on device type.
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公开(公告)号：US10199172B2
公开(公告)日：2019-02-05
申请号：US15275372
申请日：2016-09-24
Applicant: Apple Inc.
Inventor： Paul A. Martinez , Jason C. Sauers , Cheung-Wei Lam , Federico P. Centola , Andro Radchenko , Martin Schauer
Abstract: Methods and devices related to fabrication and utilization of multilayer capacitors presenting coaxially arranged electrode layers. The capacitors may be self-shielded against electromagnetic interference with neighboring components. The capacitors may have reduced losses from fringing effects when compared to conventional capacitors. The coaxial capacitors may be two-terminal multilayer ceramic capacitors (MLCC). The design of the capacitors may facilitate an improved relationship between the electric and magnetic fields generated by the capacitor within the dielectric in some embodiments. In some embodiments, the placement of the terminals may lead to a cancelation of mutual inductances between the electrodes. Terminations that facilitate the coupling of the capacitor to a circuit board, as well as methods for fabrication of the capacitors are also discussed.
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Patent Agency Ranking
公开(公告)号：US20170207028A1
公开(公告)日：2017-07-20
申请号：US15275372
申请日：2016-09-24
Applicant: Apple Inc.
Inventor： Paul A. Martinez , Jason C. Sauers , Cheung-Wei Lam , Federico P. Centola , Andro Radchenko , Martin Schauer
Abstract: Methods and devices related to fabrication and utilization of multilayer capacitors presenting coaxially arranged electrode layers. The capacitors may be self-shielded against electromagnetic interference with neighboring components. The capacitors may have reduced losses from fringing effects when compared to conventional capacitors. The coaxial capacitors may be two-terminal multilayer ceramic capacitors (MLCC). The design of the capacitors may facilitate an improved relationship between the electric and magnetic fields generated by the capacitor within the dielectric in some embodiments. In some embodiments, the placement of the terminals may lead to a cancelation of mutual inductances between the electrodes. Terminations that facilitate the coupling of the capacitor to a circuit board, as well as methods for fabrication of the capacitors are also discussed.
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公开(公告)号：US20190393733A1
公开(公告)日：2019-12-26
申请号：US16145503
申请日：2018-09-28
Applicant: Apple Inc.
Inventor： Andro Radchenko , Vaneet Pathak , Martin Schauer , Cheung-Wei Lam , Rahul A. Sabnani
Abstract: Wireless power transmitting devices according to embodiments of the present technology may include a contact surface configured to support one or more wireless power receiving devices. The wireless power transmitting devices may include a plurality of coils. The wireless power transmitting devices may also include a shield positioned between the plurality of coils and the contact surface. The shield may include one or more shield members, each shield member axially aligned with a separate coil of the plurality of coils, and may include a multilayer structure exhibiting various conductivities.
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公开(公告)号：US20190199137A1
公开(公告)日：2019-06-27
申请号：US15902875
申请日：2018-02-22
Applicant: Apple Inc.
Inventor： Bing Jiang , Martin Schauer , Indranil S. Sen , Jouya Jadidian , Mark D. Neumann , Mohit Narang , Vaneet Pathak , Yi Jiang
Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may have microwave antennas that extend along an axis in a staggered arrangement. In the staggered arrangement, the microwave antennas are positioned on alternating sides of the axis. Each microwave antenna is elongated along a dimension that is perpendicular to the axis. Multiple antennas may overlap a wireless power receiving antenna in the wireless power receiving device. Control circuitry may use oscillator and amplifier circuitry to provide antennas that have been overlapped by the wireless power receiving antenna with drive signals. The drive signals may be adjusted based on feedback from the wireless power receiving device to enhance power transmission efficiency. The system may have a wireless power transmitting device with inductive wireless power transmitting coils.
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公开(公告)号：US20190027298A1
公开(公告)日：2019-01-24
申请号：US15658227
申请日：2017-07-24
Applicant: Apple Inc.
Inventor： Jouya Jadidian , Vaneet Pathak , Martin Schauer , Cheung-Wei Lam , Darshan R. Kasar , Christopher S. Graham , Andro Radchenko
Abstract: A shield for redirecting magnetic field generated from a plurality of transmitter coils includes a ferromagnetic structure divided into segments by a plurality of boundary regions, each segment comprises a first material having a first magnetic permeability and each boundary region comprises a second material having a second magnetic permeability lower than the first magnetic permeability, where the plurality of boundary regions are configured to resist a propagation of magnetic field from a first area of the ferromagnetic structure to a second area of the ferromagnetic structure, where the first area intercepts the magnetic field generated from at least one active transmitter coil of the plurality of transmitter coils.
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公开(公告)号：US20180068784A1
公开(公告)日：2018-03-08
申请号：US15405027
申请日：2017-01-12
Applicant: Apple Inc.
Inventor： Paul A. Martinez , Ming Y. Tsai , Federico P. Centola , Martin Schauer , Cheung-Wei Lam , Jason C. Sauers
CPC classification number: H01F27/365 , H01F17/0013 , H01F2017/008 , H05K1/023 , H05K1/18
Abstract: A system includes a circuit board, an inductor including windings mounted on the circuit board, and a plurality of magnetic field containment devices. Each magnetic field containment device includes an independent electrical circuit that is not directly electrically connected via a conductor to any other magnetic field containment device. Each magnetic field containment device also includes a material of a certain relative permeability. Each magnetic field containment device at least partially surrounds the inductor and, in operation, at least partially contains a magnetic B-Field generated by electrical current in the windings of the inductor. The plurality of magnetic field containment devices, in operation, enables a certain saturation current in the inductor.
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