Wireless power transfer for low power devices

摘要

Exemplary embodiments are directed to wireless power transfer to simultaneously recharge power to more than one device and a user interface for setting charging duration. A method of operating a wireless receiver may comprise receiving wireless power with a receive antenna and conveying power from the receive antenna to a chargeable element. The method may further include electrically isolating the receive antenna from the chargeable element upon detecting that the chargeable element is fully-charged.

主权项

1. A wireless charging device, comprising:
an antenna configured to wirelessly transmit power simultaneously to a first chargeable device and a second chargeable device at a level sufficient to charge or power the first and the second chargeable devices; a user interface configured to receive a user input indicating a desired duration of a charging period for wirelessly transmitting power via the antenna to each one of the first and second chargeable devices; a timer configured to track time during the charging period; and a controller configured to deactivate the wireless transmission of power via the antenna to the first and second chargeable devices when the charging period is equal to the desired duration.