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

IPC: H02J50/10 ,  H02J50/80 ,  H04L27/04 ,  H04L27/14

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.

公开(公告)号：US20230378822A1

公开(公告)日：2023-11-23

申请号：US18192183

申请日：2023-03-29

Applicant: Apple Inc.

Inventor： Zaid A AbuKhalaf ,  Alin I Gherghescu ,  Jukka-pekka J Sjoeroos

IPC: H02J50/80 ,  H02J50/10 ,  H02J7/00

CPC classification number: H02J50/80 ,  H02J50/10 ,  H02J7/0048 ,  H02J2207/20

Abstract: A wireless power transmitter can include a wireless power transfer coil, an inverter that receives an input DC voltage and outputs an AC voltage to the wireless power transfer coil so as to deliver power to a wireless power receiver, and a communications module configured to communicate with the wireless power receiver by transmitting and receiving messages requesting, selecting, or confirming one of a plurality of power profiles of the wireless power transmitter, the plurality of power profiles corresponding to a gain measurement mode, a nominal mode that delivers a relatively higher power level, and a light load mode that delivers a relatively lower power level.

公开(公告)号：US11824375B2

公开(公告)日：2023-11-21

申请号：US17100598

申请日：2020-11-20

Applicant: Apple Inc.

Inventor： Zaid A AbuKhalaf ,  Alexei E. Kosut

IPC: H02J50/80 ,  H02J50/40 ,  H02J7/00 ,  H02J50/10

CPC classification number: H02J50/80 ,  H02J7/0048 ,  H02J7/007182 ,  H02J50/10 ,  H02J50/40

Abstract: A wireless power system may include power transmitting devices, power receiving devices, and power transmitting and receiving devices. During a configuration phase (e.g., when placed adjacent to another device), a battery-powered transmitting device may transmit information to the additional device that identifies a presence of the battery in the transmitting device. The battery-powered transmitting device may periodically report its state of charge to a power receiving device using in-band communication. The battery-powered transmitting device may report its state of charge before a power transfer phase (e.g., in the configuration phase) or during the power transfer phase. The battery-powered transmitting device may report its state of charge to the power receiving device in response to a state of charge query from the power receiving device. The power receiving device may display the state of charge of the battery of the power transmitting device.

公开(公告)号：US11843265B2

公开(公告)日：2023-12-12

申请号：US17100317

申请日：2020-11-20

Applicant: Apple Inc.

Inventor： Zaid A AbuKhalaf ,  Alexei E. Kosut

IPC: H02J50/80 ,  H02J50/40 ,  H02J7/00 ,  H02J50/10

CPC classification number: H02J50/80 ,  H02J7/0048 ,  H02J7/007182 ,  H02J50/10 ,  H02J50/40

Abstract: A wireless power system may include power transmitting devices, power receiving devices, and power transmitting and receiving devices. Control circuitry in the power transmitting and receiving device may determine whether to operate in a power receiving mode or a power transmitting mode. The preferred mode for the power transmitting and receiving device may depend on the types of devices within the system, the state of charge of the batteries of the devices in the system, whether or not one or more devices in the system are connected to a wired power source, etc. Each power transmitting and receiving device may have a default mode. Upon detection of an adjacent device, the wireless power transmitting and receiving device enters a configuration phase in its default mode. Before or during a power transfer phase, the power transmitting and receiving device may swap roles from its default mode to another mode.

公开(公告)号：US20230361630A1

公开(公告)日：2023-11-09

申请号：US18355139

申请日：2023-07-19

Applicant: Apple Inc.

Inventor： Sriram Narayanan ,  Xing Zhou ,  Alireza Safaee ,  Zaid A AbuKhalaf

IPC: H02J50/80

CPC classification number: H02J50/80 ,  H02J50/10

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.

公开(公告)号：US11784512B2

公开(公告)日：2023-10-10

申请号：US17814099

申请日：2022-07-21

Applicant: Apple Inc.

Inventor： Sriram Narayanan ,  Xing Zhou ,  Alireza Safaee ,  Zaid A AbuKhalaf

IPC: H02J50/10 ,  H04L27/14 ,  H04L27/04 ,  H02J50/80

CPC classification number: H02J50/10 ,  H02J50/80 ,  H04L27/04 ,  H04L27/14

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.