| US 11,811,242 B1 | ||
| Loss-split modeling for wireless power transfer | ||
| Alireza Safaee, Cupertino, CA (US); Matthew J. Chabalko, Cupertino, CA (US); Douglas Adams, Mountain View, CA (US); Ruiyang Lin, Milpitas, CA (US); and Zaki Moussaoui, Micco, FL (US) | ||
| Assigned to Apple Inc., Cupertino, CA (US) | ||
| Filed by Apple Inc., Cupertino, CA (US) | ||
| Filed on Aug. 24, 2020, as Appl. No. 17/000,767. | ||
| Application 17/000,767 is a continuation of application No. 16/939,182, filed on Jul. 27, 2020. | ||
| Claims priority of provisional application 62/901,039, filed on Sep. 16, 2019. | ||
| Int. Cl. H02J 50/60 (2016.01); H02J 50/00 (2016.01) | ||
| CPC H02J 50/60 (2016.02) [H02J 50/005 (2020.01)] | 22 Claims |
|
1. A wireless power transmitter comprising:
one or more transmitter coils; wireless power transmitting circuitry configured to drive the one or more transmitter coils with energy derived from a power source; and control circuitry configured to control the wireless power transmitting circuitry, wherein the control circuitry implements foreign object detection algorithms derived from a loss-split circuit model that includes a plurality of resistance values corresponding to power losses in selected components of the power system and derived by performing a plurality of finite element analyses of at least the wireless power transmitter; wherein the plurality of finite element analyses include a plurality of orthogonal analyses of combined transmitter and receiver sides of the model. |