Wireless energy transfer via coupled parasitic resonators

摘要

This disclosure provides systems, methods and apparatus for wirelessly transferring power using parasitic resonators. In one aspect a wireless power receiver apparatus for powering or charging an electric vehicle is provided. The wireless power receiver apparatus includes a receive circuit including a first coil. The receive circuit is configured to wirelessly receive power so as to power or charge or power the electric vehicle. The wireless power receiver apparatus further includes a passive circuit including a second coil. The passive circuit is configured to wirelessly receive power from a transmit circuit including a third coil. The passive circuit is further configured to wirelessly retransmit power received from the transmit circuit to the receive circuit. The wireless power receiver apparatus further includes a controller configured to displace the second coil from the first coil is provided.

主权项

1. A wireless power receiver apparatus for powering or charging an electric vehicle, comprising:
a receive circuit comprising a first coil, the receive circuit being configured to wirelessly receive power so as to power or charge the electric vehicle; a passive circuit comprising a second coil, the passive circuit being configured to wirelessly receive power from a transmit circuit comprising a third coil, the passive circuit being further configured to wirelessly retransmit power received from the transmit circuit to the receive circuit; and a controller configured to:
detect misalignment between the third coil of the transmit circuit and the first coil, anddisplace the second coil from the first coil in response to the detecting.