Increasing efficiency of wireless power transfer

摘要

Techniques are described herein that are capable of increasing efficiency of wireless power transfer. A wireless power transfer system includes features that allow the system to be deployed in public spaces such as airports or in commercial establishments such as restaurants or hotels to allow a user to recharge one or more portable electronic devices while away from home. To accommodate wireless recharging of a variety of device types and states, the system may receive parameters and/or state information associated with a portable electronic device to be recharged and may control the wireless power transfer in accordance with such parameters and/or state information. For instance, the system may increase efficiency of the wireless power transfer based on such parameters and/or state information. The system may also provide a secure and efficient means for obtaining required payment information from the user prior to the wireless power transfer, thereby facilitating fee-based recharging.

主权项

1. A method comprising:
initiating a wireless power transfer from a charging station to a portable electronic device via a wireless power link; receiving at least one parameter regarding the portable electronic device at the charging station via a wireless communication link in response to initiation of the wireless power transfer, the at least one parameter including a power parameter that specifies a magnitude of power requested by the portable electronic device; and increasing efficiency of the wireless power transfer based on the at least one parameter, wherein increasing the efficiency of the wireless power transfer includes reducing a magnitude of power that is provided by the charging station with respect to the wireless power transfer to be substantially equal to the magnitude of power requested by the portable electronic device.