US 2014/0368052 A1 · WIRELESS POWER RECEIVER SYSTEM

Abstract

A wireless power receiver capable of receiving wireless power from close-coupled and mid-range wireless power supplies. The wireless power receiver includes a principal and supplemental receiver circuits. The principle receiver circuit is adjustable to operate in a close-coupled mode or a resonator mode. In close-coupled mode, the principle receiver circuit is coupled to the power input of a remote device and functions as the principle power source. In resonator-mode, the principle power circuit is electrically disconnected/isolated from the remote device and forms a closed resonant loop to function as a resonator that amplifies an electromagnetic field from a mid-range wireless power supply. The supplemental receiver circuit is coupled to the power input of the remote device and is configured to receive wireless power from the resonator and function as the power source when the principle receiver circuit is in the resonator mode.

Claims32

Dependent claims

A wireless power receiver comprising:

a principle receiver circuit having a tank circuit coupled to a power output and a switch connected across opposite ends of said tank circuit;
a supplemental receiver circuit having an inductor coupled to a power output;
and
a controller configured to selectively operate said switch in an open mode in which power induced in said tank circuit is delivered to said power output and in a closed mode in which said switch creates a closed resonant loop in said tank circuit, whereby said principle receiver circuit functions as a resonator.

1 more element

Dependencies are inferred from the claim text.

Wireless power receiver system

Life of this patent

Wireless power receiver system

Life of this patent

Abstract

Claims32