公开(公告)号：US12149093B2

公开(公告)日：2024-11-19

申请号：US16987691

申请日：2020-08-07

Applicant: Apple Inc.

Inventor： Weihong Qiu ,  Jun Liu ,  Zaki Moussaoui

IPC: H02J50/10 ,  H01F38/14 ,  H02J7/02 ,  H02J50/00

Abstract: Electronic apparatuses according to embodiments of the present technology may include an electronic device a first surface and a second surface opposite the first. The electronic device may include a battery and a wireless charging coil within an interior volume of the device. The electronic device may include a first magnetic conductor and positioned between the battery and the wireless charging coil. The electronic device may also include an integrated circuit coupled with the battery and the wireless charging coil. The apparatuses may include a case extending about the electronic device. The case may be characterized by a first surface and a second surface. The case may be characterized by a thickness between the first surface of the case and the second surface of the case. The case may include a second magnetic conductor incorporated within the thickness of the case at the second surface of the case.

公开(公告)号：US20200099257A1

公开(公告)日：2020-03-26

申请号：US16576692

申请日：2019-09-19

Applicant: Apple Inc.

Inventor： Weihong Qiu ,  Jun Liu ,  Zaki Moussaoui ,  Karl Ruben F. Larsson

IPC: H02J50/12 ,  H01M10/46 ,  H02J7/02 ,  H04B5/00 ,  H02J50/80

Abstract: A wireless power system may have a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device may have a coil that receives wireless power signals from the wireless power transmitting device and may have a rectifier that produces direct-current power from the received wireless power signals. A charging status indicator may be displayed by the wireless power receiving device during wireless power transmission. Control circuitry in the wireless power receiving device may monitor the output voltage to determine whether wireless power transmission has been lost. The charging status indicator may continue to be displayed for a debounce period following detection of loss of wireless power transmission. The debounce period may be adjusted based on whether power loss is due to user movement of the receiving device or termination of power transmission by the transmitting device.

公开(公告)号：US11996767B1

公开(公告)日：2024-05-28

申请号：US17816074

申请日：2022-07-29

Applicant: Apple Inc.

Inventor： Weihong Qiu ,  Jun Liu ,  Jizhen Fu ,  Zaki Moussaoui

IPC: H02M1/08 ,  H02J50/10 ,  H02M1/38 ,  H02M7/5387 ,  H02M7/5395

CPC classification number: H02M1/385 ,  H02J50/10 ,  H02M1/083 ,  H02M7/53871 ,  H02M7/5395

Abstract: A method of adaptively controlling dead time between turn off of a first switching device of an inverter and turn on of a second switching device of the inverter that is a counterpart of the first switching device can include: monitoring a plurality of switching events of at least one of the first and second switching devices, storing for each monitored switching event an indication whether a dead time associated therewith permitted optimal switching, and adaptively controlling the dead time responsive to the stored indications. Monitoring a plurality of switching events of at least one of the first and second switching devices can further include sampling an output voltage of the inverter and comparing the sampled output voltage to one of a high reference voltage corresponding to a high inverter rail voltage and a low reference voltage corresponding to a low inverter rail voltage.

公开(公告)号：US20210050744A1

公开(公告)日：2021-02-18

申请号：US16987691

申请日：2020-08-07

Applicant: Apple Inc.

Inventor： Weihong Qiu ,  Jun Liu ,  Zaki Moussaoui

IPC: H02J50/10 ,  H02J7/02 ,  H02J50/00 ,  H01F38/14

Abstract: Electronic apparatuses according to embodiments of the present technology may include an electronic device a first surface and a second surface opposite the first. The electronic device may include a battery and a wireless charging coil within an interior volume of the device. The electronic device may include a first magnetic conductor and positioned between the battery and the wireless charging coil. The electronic device may also include an integrated circuit coupled with the battery and the wireless charging coil. The apparatuses may include a case extending about the electronic device. The case may be characterized by a first surface and a second surface. The case may be characterized by a thickness between the first surface of the case and the second surface of the case. The case may include a second magnetic conductor incorporated within the thickness of the case at the second surface of the case.

公开(公告)号：US20250015636A1

公开(公告)日：2025-01-09

申请号：US18888430

申请日：2024-09-18

Applicant: Apple Inc.

Inventor： Weihong Qiu ,  Jun Liu ,  Zaki Moussaoui

IPC: H02J50/10 ,  H01F38/14 ,  H02J7/02 ,  H02J50/00

Abstract: Electronic apparatuses according to embodiments of the present technology may include an electronic device a first surface and a second surface opposite the first. The electronic device may include a battery and a wireless charging coil within an interior volume of the device. The electronic device may include a first magnetic conductor and positioned between the battery and the wireless charging coil. The electronic device may also include an integrated circuit coupled with the battery and the wireless charging coil. The apparatuses may include a case extending about the electronic device. The case may be characterized by a first surface and a second surface. The case may be characterized by a thickness between the first surface of the case and the second surface of the case. The case may include a second magnetic conductor incorporated within the thickness of the case at the second surface of the case.

公开(公告)号：US12212249B1

公开(公告)日：2025-01-28

申请号：US18065777

申请日：2022-12-14

Applicant: Apple Inc.

Inventor： Weihong Qiu ,  Jun Liu ,  Zaki Moussaoui

IPC: H02M7/483 ,  H02J50/12 ,  H02M1/00 ,  H02M7/5387 ,  H02M1/38

Abstract: A switched capacitor converter can include a switched capacitor stage comprising a flying capacitor and a ladder of three switching devices. A first switching device can be connected between a DC input of the switched capacitor converter and an AC bus. A second switching device is connected between the DC input and a third switching device. The third switching device can be connected between the second switching device and ground. The flying capacitor can be connected between the AC bus and a junction of the second switching device and the third switching device. The switched capacitor converter can further include an inverter stage having an input coupled to the AC bus and an output that delivers an AC voltage.