公开(公告)号：US11070088B2

公开(公告)日：2021-07-20

申请号：US16213915

申请日：2018-12-07

Applicant: Apple Inc.

Inventor： Rex Pius Huang ,  Michael Scott Eckert ,  Mikhal De Jesus ,  Arunim Kumar ,  Atul Salvekar

IPC: H02J50/12 ,  H02J50/80 ,  H02J5/00 ,  H02J7/02

Abstract: An inductive power transmitter and an inductive power receiver include communication circuitry to communicate using modulation of the power transfer field. The inductive power transmitter or the inductive power receiver includes monitoring circuitry to determine a communication fault condition. If a communication fault condition is determined, a converter of the inductive power transmitter or inductive power receiver can adjust a control parameter.

公开(公告)号：US10320241B2

公开(公告)日：2019-06-11

申请号：US15967285

申请日：2018-04-30

Applicant: Apple Inc.

Inventor： Liang Chen ,  Andrew Gray ,  Arunim Kumar ,  Zachary Strachan Harris ,  Antoin J. Russell ,  Bharat K. Patel

IPC: H02J50/40 ,  H02J50/12 ,  G01R31/28 ,  H02J50/60 ,  H02J7/02 ,  G08B1/08 ,  H02J50/90

Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using output circuitry that includes an array of wireless power transmitting coils that form a wireless charging surface. During wireless power transmission operations, wireless power signals are transmitted from the array of coils to a wireless power receiving device on the charging surface. Inductance measurement circuitry such as impulse response measurement circuitry and other measurement circuitry is coupled to the output circuitry. Control circuitry in the wireless power transmitting device analyzes signals from the measurement circuitry to produce two-dimensional signal profiles across the wireless charging surface and to compare patterns in these signal profiles to predetermined signal patterns associated with the presence of known power receiving equipment on the wireless charging surface. Based on the analysis, charging parameters may be adjusted or other actions taken.