WIRELESS CHARGING SYSTEM FOR DEVICES IN A VEHICLE

摘要

A wireless charging system for use in vehicles includes power transmitting coils which are used for resonant power transfer to power receiving devices in the vehicle. The system includes a detection system for detecting power receiving devices in the vicinity of the transmitting coils so that only the power transmitting coils having objects detected nearby are activated. The system also includes a tuning circuit that enables power transmitting coils to be tuned with respect to each other to increase the power delivery range or detuned with respect to each other to decrease interference between coils.

主权项

1. A wireless power transfer system for a vehicle, comprising:
a power source; a plurality of power transmitting coils disposed at a plurality of predetermined positions in the vehicle, each of the predetermined positions defining a power zone within the vehicle, the power transmitting coils each being configured to generate an oscillating energy field in the power zone associated with the respective power transmitting coil in response to receiving an oscillating drive signal; a transmitting coil tuning system operably coupled to the plurality of power transmitting coils and configured to control a resonant frequency of each of the respective power transmitting coils; a detection system in the vehicle configured to detect when receiving devices are located within the power zones; and a control system operably coupled to the power source, the power transmitting coils, the transmitting coil tuning system and the detection system, the control system being configured to selectively supply the oscillating drive signal to the respective power transmitting coils and to control the transmitting coil tuning system to selectively adjust the resonant frequencies of the power transmitting coils based at least in part on output of the detection system.