公开(公告)号：US20220247232A1

公开(公告)日：2022-08-04

申请号：US17198116

申请日：2021-03-10

Applicant: Apple Inc.

Inventor： Adam L. Schwartz ,  Alireza Safaee ,  Stephen C. Terry ,  Zhiyuan Hu

IPC: H02J50/70 ,  H02J7/02 ,  H02J50/12 ,  H02J50/60 ,  H01F38/14 ,  H01F27/36

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.

公开(公告)号：US20220014046A1

公开(公告)日：2022-01-13

申请号：US17484954

申请日：2021-09-24

Applicant: Apple Inc.

Inventor： Narendra S. Mehta ,  Stephen C. Terry ,  Rohan Dayal

IPC: H02J50/50 ,  H01F38/14 ,  H02J50/10 ,  H01M10/42

Abstract: A battery case has first and second coils on opposing sides of a battery and has switching circuitry that is coupled between the first and second coils. The battery case has a battery that provides supplemental battery power wirelessly to a wireless power receiving device via the second coil when the switching circuitry is in an open state. The case can also receive power wirelessly with the first coil from a wireless charging mat when the switching circuitry is in the open state. In a closed state, the switching circuitry shorts the first and second coils together so that current flowing through the first coil flows through the second coil in series and so that wireless power from the wireless charging mat that is received with the first coil is transmitted wirelessly to the wireless power receiving device using the second coil.

公开(公告)号：US20210359556A1

公开(公告)日：2021-11-18

申请号：US17389124

申请日：2021-07-29

Applicant: Apple Inc.

Inventor： Chad A. Bossetti ,  Christopher S. Graham ,  David W. Ritter ,  Todd K. Moyer ,  Steven G. Herbst ,  Shimon Elkayam ,  Nileshbhai J. Shah ,  Stephen C. Terry ,  Zaki Moussaoui

IPC: H02J50/90 ,  H02J50/10 ,  H02J50/12 ,  H02J50/40 ,  G01D5/16 ,  G01D5/20 ,  G01D5/24

Abstract: A wireless charging mat and method of operating the same. The wireless charging mat includes a detection system configured to determine a location and an orientation of an electronic device on the wireless charging mat. The location and orientation are determined based on detected locations of one or more structural features of the electronic device. The wireless charging mat is operated according to the detected location and orientation.

公开(公告)号：US20200227935A1

公开(公告)日：2020-07-16

申请号：US16424331

申请日：2019-05-28

Applicant: Apple Inc.

Inventor： Narendra S. Mehta ,  Stephen C. Terry ,  Rohan Dayal

IPC: H02J7/02 ,  H02J50/10 ,  H02J50/50 ,  H01M10/42 ,  H01F38/14

Abstract: A battery case has first and second coils on opposing sides of a battery and has switching circuitry that is coupled between the first and second coils. The battery case has a battery that provides supplemental battery power wirelessly to a wireless power receiving device via the second coil when the switching circuitry is in an open state. The case can also receive power wirelessly with the first coil from a wireless charging mat when the switching circuitry is in the open state. In a closed state, the switching circuitry shorts the first and second coils together so that current flowing through the first coil flows through the second coil in series and so that wireless power from the wireless charging mat that is received with the first coil is transmitted wirelessly to the wireless power receiving device using the second coil.