公开(公告)号：US20180351392A1

公开(公告)日：2018-12-06

申请号：US15895761

申请日：2018-02-13

Applicant: Apple Inc.

Inventor： Moshe H. Malkin ,  Manu Agarwal ,  Alin I. Gherghescu

IPC: H02J7/02 ,  H02J50/12 ,  H02J50/80

Abstract: A wireless power transmitting device transmits wireless power signals modulated at a given power frequency to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data signals to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data. The data receiver may include an input stage, bandpass filter circuitry, demodulator circuitry, and a data stream combiner. The bandpass filter circuitry may include at least two bandpass filter circuits for passing through signals at the power frequency and some harmonic of the power frequency. The demodulator circuitry may extract amplitude and phase information from the bandpass filtered signals and to generate multiple demodulated data streams. The data stream combiner may correlate the demodulated data streams and combine the correlated data streams.

公开(公告)号：US12119675B2

公开(公告)日：2024-10-15

申请号：US17834180

申请日：2022-06-07

Applicant: Apple Inc.

Inventor： Zhiyuan Hu ,  Alin I. Gherghescu ,  Arash Mehrabi ,  Dmitry Berdnikov

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

CPC classification number: H02J50/80 ,  H02J7/00712 ,  H02J50/10

Abstract: Portable electronic devices such as cellular telephones, wristwatch devices, tablet computers, wireless earbuds, and other portable devices use batteries. The batteries in these devices may be charged using a wireless power system. For example, a user may place devices such as tablet computers and cellular telephones on a wireless charging puck or mat to wirelessly charge these devices. Wireless power systems include a power transmitting device and a power receiving device. Coils in the power transmitting and receiving devices are used to transmit and receive wireless power signals. The coupling between the transmitting and receiving coils may affect the wireless charging efficiency and the power produced in the receiving device. Disclosed herein are feedback control schemes to optimize efficiency of wireless power transfer systems.

公开(公告)号：US10770928B2

公开(公告)日：2020-09-08

申请号：US15895761

申请日：2018-02-13

Applicant: Apple Inc.

Inventor： Moshe H. Malkin ,  Manu Agarwal ,  Alin I. Gherghescu

IPC: H02J50/80 ,  H02J7/02 ,  H02J50/12

Abstract: A wireless power transmitting device transmits wireless power signals modulated at a given power frequency to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data signals to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data. The data receiver may include an input stage, bandpass filter circuitry, demodulator circuitry, and a data stream combiner. The bandpass filter circuitry may include at least two bandpass filter circuits for passing through signals at the power frequency and some harmonic of the power frequency. The demodulator circuitry may extract amplitude and phase information from the bandpass filtered signals and to generate multiple demodulated data streams. The data stream combiner may correlate the demodulated data streams and combine the correlated data streams.

公开(公告)号：US20220407369A1

公开(公告)日：2022-12-22

申请号：US17834180

申请日：2022-06-07

Applicant: Apple Inc.

Inventor： Zhiyuan Hu ,  Alin I. Gherghescu ,  Arash Mehrabi ,  Dmitry Berdnikov

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

Abstract: Portable electronic devices such as cellular telephones, wristwatch devices, tablet computers, wireless earbuds, and other portable devices use batteries. The batteries in these devices may be charged using a wireless power system. For example, a user may place devices such as tablet computers and cellular telephones on a wireless charging puck or mat to wirelessly charge these devices. Wireless power systems include a power transmitting device and a power receiving device. Coils in the power transmitting and receiving devices are used to transmit and receive wireless power signals. The coupling between the transmitting and receiving coils may affect the wireless charging efficiency and the power produced in the receiving device. Disclosed herein are feedback control schemes to optimize efficiency of wireless power transfer systems.