Patent ID: 11945319
Assignee: WITRICITY CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  G  H  Y | IPC B  G  H

Claim 0:
1. A wireless power transfer pad comprising:
a wireless power transmitter configured to generate an alternating magnetic field for wirelessly transferring power to a wireless power receiver;
a foreign object detection circuit including sense elements, the foreign object detection circuit configured to detect a presence of a foreign object in a space between the wireless power transfer pad and the wireless power receiver;
an enclosure comprising a cover shell positioned over the wireless power transmitter and the foreign object detection circuit, the cover shell comprising:
a first portion made of a first material; and
a second portion made of a second material, wherein the second portion faces the wireless power receiver when wirelessly transferring power, and wherein the second material has a heat resistance that is higher than a heat resistance of the first material, the heat resistance of the second material being sufficient to protect electrical components of the wireless power transfer pad from potential damage due to heat that is generated by the alternating magnetic field in a foreign object that is undetectable by the foreign object detection circuit.