公开(公告)号：US20190199144A1

公开(公告)日：2019-06-27

申请号：US15980401

申请日：2018-05-15

Applicant: Apple Inc.

Inventor： Jouya Jadidian ,  Martin Schauer ,  Andro Radchenko ,  Cheung-Wei Lam ,  Ketan Shringarpure ,  Vaneet Pathak

IPC: H02J50/70 ,  H02J7/02 ,  H02J50/12 ,  H01F38/14 ,  H01F27/29 ,  H01F27/28 ,  H01F27/38

CPC classification number: H02J50/70 ,  H01F27/2823 ,  H01F27/29 ,  H01F27/38 ,  H01F38/14 ,  H02J7/025 ,  H02J50/12

Abstract: A wireless power system uses a wireless power transmitting device to transmit wireless power to wireless power receiving devices. The wireless power transmitting device has wireless power transmitting coils that extend under a wireless charging surface. Non-power-transmitting coils and magnetic sensors may be included in the wireless power transmitting device. During wireless power transfer operations, control circuitry in the wireless power transmitting device adjusts drive signals applied to the coils to reduce ambient magnetic fields. The drive signal adjustments are made based on device type information and other information on the wireless power receiving devices and/or magnetic sensor readings from the magnetic sensors. In-phase or out-of-phase drive signals are applied to minimize ambient fields depending on device type.

公开(公告)号：US20180090970A1

公开(公告)日：2018-03-29

申请号：US15454847

申请日：2017-03-09

Applicant: Apple Inc.

Inventor： Andro Radchenko ,  Federico P. Centola ,  Vaneet Pathak

IPC: H02J7/02 ,  H04B5/00 ,  H02J50/10

CPC classification number: H02J7/025 ,  H02J50/10 ,  H02J50/80 ,  H04B5/0037 ,  H04B5/0081 ,  H04L67/104 ,  H04W4/14 ,  H04W76/10 ,  H04W84/12

Abstract: Methods and devices useful in performing magneto-inductive charging and communication in the absence of a cellular and/or internet network connection are provided. By way of example, an electronic device includes inductive charging and communication circuitry configured to receive a signal configured to induce a charging function based at least in part on an inductive coil coupled to the inductive charging and communication circuitry. Inducing the charging function includes charging an energy storage component of the electronic device. The inductive charging and communication circuitry is also configured receive an indication to switch from the charging function to a communication function. The communication function is based at least in part on the inductive coil. The inductive charging and communication circuitry is further configured establish a communication link between the electronic device using the inductive coil to transmit and receive communication signals.