Patent ID: 11894700
Assignee: AIRA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for operating a wireless charging device, comprising:
transmitting a first pulse through a first power transmitting coil that is coupled to a first capacitor at a first node in a first charging circuit;
determining a first peak voltage, wherein the first peak voltage occurs at the first node in response to the first pulse and is indicative of a coupling coefficient between the first power transmitting coil and a receiving coil in a chargeable device;
transmitting the first pulse through a second power transmitting coil that is coupled to a second capacitor at a second node in a second charging circuit;
determining a second peak voltage, wherein the second peak voltage occurs at the second node in response to the first pulse and is indicative of a coupling coefficient between the second power transmitting coil and the receiving coil in the chargeable device;
determining that amplitude of the first peak voltage is lower than amplitude of the second peak voltage; and
providing a first charging current to the first charging circuit.