The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2020
Filed:
Jul. 20, 2018
Applicant:
Apple Inc., Cupertino, CA (US);
Inventor:
Rex Pius Huang, Auckland, NZ;
Assignee:
Apple Inc., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 50/12 (2016.01); H04B 5/00 (2006.01); H02J 5/00 (2016.01); H02M 1/08 (2006.01); H02J 50/80 (2016.01); H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
H02J 50/12 (2016.02); H02J 5/005 (2013.01); H02J 50/80 (2016.02); H02M 1/08 (2013.01); H02M 3/33507 (2013.01); H02M 3/33569 (2013.01); H04B 5/0037 (2013.01); H04B 5/0081 (2013.01);
Abstract
An inductive power transmitter for an inductive power transfer system including a power regulation circuit utilising only primary side parameters to control power flow. The duty cycle of the waveform applied to the transmitter coil is adjusted based on the ratio of the output current of the power supply and the current supplied to the resonant circuit (the current ratio). This may be further compensated based on the amount of power supplied to the transmitter.