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公开(公告)号：US20240072573A1
公开(公告)日：2024-02-29
申请号：US18503389
申请日：2023-11-07
Applicant: Apple Inc.
Inventor： Alireza Safaee
Abstract: A wireless charging system having a power transmitting device may wirelessly transfer power to a power receiving device. The power receiving device may include a voltage regulator that operates independently from the power transmitting device. The voltage regulator may output a rectified voltage and may activate pull-down rectifier switches during zero voltage crossings to boost the rectified voltage. The power receiving device may send control error packets to the power transmitting device to direct the power transmitting device to adjust the transmit power level.
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公开(公告)号：US11799330B2
公开(公告)日：2023-10-24
申请号：US17381929
申请日：2021-07-21
Applicant: Apple Inc.
Inventor： Mehmet K. Nalbant , Alireza Safaee , Jukka-pekka J. Sjoeroos , Zaid A. AbuKhalaf , Juan Carlos Pastrana , Alexei E. Kosut
CPC classification number: H02J50/80 , H02J50/10 , H04B5/0031 , H04B5/0037
Abstract: Wireless power transfer devices may be configured to negotiate with each other to operate. For example, a wireless power standard may provide for various levels of power delivery, various frequencies for power transfer, various operating voltages, and so forth. There may be instances in which it is desirable to provide wireless power transfer devices (both PTx and PRx) that are capable of enhanced performance when paired with a compatible device. For example, devices can be configured to operate at higher or more granular power levels, different frequencies, and so forth.
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公开(公告)号：US20240250561A1
公开(公告)日：2024-07-25
申请号：US18624598
申请日：2024-04-02
Applicant: Apple Inc.
Inventor： Adam L. Schwartz , Alireza Safaee , Stephen C. Terry , Zhiyuan Hu
Abstract: A wireless charging system having a power transmitter may wirelessly transfer power to a power receiver. Shield saturation, such as saturation of a ferrite structure, in the wireless power receiver may occur under some operating conditions. Saturation can lead to disruptive oscillations in power transfer. The power transmitting may include control circuitry for detecting and mitigating saturation.
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公开(公告)号：US11984737B2
公开(公告)日：2024-05-14
申请号：US18336555
申请日：2023-06-16
Applicant: Apple Inc.
Inventor： Adam L. Schwartz , Alireza Safaee , Stephen C. Terry , Zhiyuan Hu
Abstract: A wireless charging system having a power transmitter may wirelessly transfer power to a power receiver. Shield saturation, such as saturation of a ferrite structure, in the wireless power receiver may occur under some operating conditions. Saturation can lead to disruptive oscillations in power transfer. The power transmitting may include control circuitry for detecting and mitigating saturation.
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公开(公告)号：US11876383B1
公开(公告)日：2024-01-16
申请号：US17313589
申请日：2021-05-06
Applicant: Apple Inc.
Inventor： Alireza Safaee
Abstract: A wireless charging system having a power transmitting device may wirelessly transfer power to a power receiving device. The power receiving device may include a voltage regulator that operates independently from the power transmitting device. The voltage regulator may output a rectified voltage and may activate pull-down rectifier switches during zero voltage crossings to boost the rectified voltage. The power receiving device may send control error packets to the power transmitting device to direct the power transmitting device to adjust the transmit power level.
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Patent Agency Ranking
公开(公告)号：US20230037635A1
公开(公告)日：2023-02-09
申请号：US17814099
申请日：2022-07-21
Applicant: Apple Inc.
Inventor： Sriram Narayanan , Xing Zhou , Alireza Safaee , Zaid A AbuKhalaf
Abstract: A wireless power transmitter can receive the results of a characterizing signal transmitted by the wireless power receiver, compute at least two parameters of a model characterizing an in-band communications channel based on the received results of the characterizing signal transmitted by the wireless power receiver, compute a plurality of equalizing filter taps from the at least two parameters, and apply the computed equalizing filter to subsequent signals received by the wireless power transmitter via the in-band communications channel. A first parameter can correspond to a time constant of the channel, and a second parameter can correspond to a damping value of the communications channel. The wireless power transmitter can transmit to a wireless power receiver a request to transmit a characterizing signal through the in-band communication channel, wherein the characterizing signal transmitted by the wireless power receiver is sent in response to the transmitted request.
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公开(公告)号：US20250112501A1
公开(公告)日：2025-04-03
申请号：US18818861
申请日：2024-08-29
Applicant: Apple Inc.
Inventor： Alireza Safaee , Sriram Narayanan , Srinath Hosur , Xing Zhou
Abstract: A wireless power receiver can include a wireless power transfer coil; a rectifier that receives an AC voltage induced in the wireless power transfer coil by a wireless power transmitter and generates a DC output voltage therefrom; load modulation circuitry; and control circuitry that operates the rectifier to power a load coupled thereto and operates the load modulation circuitry to communicate with the wireless power transmitter by selectively altering power drawn from the wireless power transfer coil in accordance with an amplitude shift keying modulation scheme having a plurality of modulation depths.
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公开(公告)号：US12212159B1
公开(公告)日：2025-01-28
申请号：US18330043
申请日：2023-06-06
Applicant: Apple Inc.
Inventor： Alireza Safaee , Matthew J. Chabalko , Douglas Adams , Ruiyang Lin , Zaki Moussaoui
Abstract: A method of modeling a wireless power transfer system can include constructing a loss-split circuit model of the wireless power transfer system. The loss-split circuit model can include a plurality of resistance values corresponding to power losses in selected components of the power system. The method can further include performing a plurality of finite element analyses to determine the plurality of resistor values. The one or more resistance values can correspond to power losses associated with one or more of: a transmitter coil, a receiver coil, friendly metal associated with a transmitter, friendly metal associated with a receiver, and a foreign object.
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公开(公告)号：US20230327495A1
公开(公告)日：2023-10-12
申请号：US18336555
申请日：2023-06-16
Applicant: Apple Inc.
Inventor： Adam L. Schwartz , Alireza Safaee , Stephen C. Terry , Zhiyuan Hu
Abstract: A wireless charging system having a power transmitter may wirelessly transfer power to a power receiver. Shield saturation, such as saturation of a ferrite structure, in the wireless power receiver may occur under some operating conditions. Saturation can lead to disruptive oscillations in power transfer. The power transmitting may include control circuitry for detecting and mitigating saturation.
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公开(公告)号：US11735962B2
公开(公告)日：2023-08-22
申请号：US17198116
申请日：2021-03-10
Applicant: Apple Inc.
Inventor： Adam L. Schwartz , Alireza Safaee , Stephen C. Terry , Zhiyuan Hu
Abstract: A wireless charging system having a power transmitter may wirelessly transfer power to a power receiver. Shield saturation, such as saturation of a ferrite structure, in the wireless power receiver may occur under some operating conditions. Saturation can lead to disruptive oscillations in power transfer. The power transmitting may include control circuitry for detecting and mitigating saturation.
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