公开(公告)号：US20180083444A1

公开(公告)日：2018-03-22

申请号：US15463558

申请日：2017-03-20

Applicant: Apple Inc.

Inventor： Narendra S. Mehta ,  Michael B. Nussbaum

IPC: H02J1/00

CPC classification number: H02J7/0065

Abstract: Methods, structures, and apparatus that are able to transfer power through a device power contact while minimizing its corrosion. During a first period, a power supply may be connected to the device power contact. During a second, subsequent period the power supply may be disconnected from the device power contact and a quasi-resonant circuit connected to the device power contact may cause a voltage on the device power contact to ring. At the end of the second period, the voltage on the device power contact may be approximately equal to a voltage of the power supply. The power supply voltage may have a first polarity and the voltage on the device power contact may have a second polarity for a portion of the second period, the second polarity opposite the first polarity.

公开(公告)号：US20230011498A1

公开(公告)日：2023-01-12

申请号：US17373533

申请日：2021-07-12

Applicant: Apple Inc.

Inventor： Dong Zheng ,  James M. Hollabaugh ,  Jihyun Cho ,  Narendra S. Mehta

IPC: G01S17/04 ,  H04B10/516 ,  H04B10/60 ,  G01S7/4861

Abstract: An electronic device may include a proximity sensor for detecting whether an external object is in the vicinity of the device. The proximity sensor may have a light detector and a light source that can be reused for data communications. The light detector may be coupled to optical receiver circuitry, whereas the light source may be coupled to optical transmitter circuitry. The optical transmitter circuitry may include encoding circuits configured to convert electrical signals to optical signals. The optical receiver circuitry may include decoding circuits configured to convert optical signals to electrical signals. The optical signals can be encoded and decoded using pulse width modulation schemes or amplitude modulation schemes.

公开(公告)号：US11133696B2

公开(公告)日：2021-09-28

申请号：US16424331

申请日：2019-05-28

Applicant: Apple Inc.

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

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

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：US11756719B2

公开(公告)日：2023-09-12

申请号：US17484954

申请日：2021-09-24

Applicant: Apple Inc.

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

IPC: H02J50/10 ,  H02J50/12 ,  H01F27/28 ,  H01F38/14 ,  H01M10/42 ,  H02J50/00 ,  H02J50/50 ,  H02J50/40

CPC classification number: H01F27/28 ,  H01F38/14 ,  H01M10/425 ,  H02J50/005 ,  H02J50/10 ,  H02J50/12 ,  H02J50/502 ,  H02J50/40

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：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：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.