Wireless power charging system

A method of operating a wireless charging apparatus, comprising:

• providing identification codes to a plurality of power receiving devices, wherein each identification code indicates a device identification of each of the power receiving devices for communication between the wireless charging apparatus and each of the power receiving devices;
• communicating with each of the power receiving devices to receive charge status information from each of the power receiving devices using the identification code;
• and
• converting a power signal to a resonant power signal and transmitting the resonant power signal to the plurality of power receiving devices via a transmitting core based on the charge status information.

A non-transitory computer-readable medium comprising instructions that, when executed by a processor, direct the processor to:

• provide codes to a plurality of power receiving devices, wherein each code indicates a different device identification of each of the power receiving devices for communication with each of the power receiving devices;
• communicate with each of the power receiving devices to receive charge status information from each of the power receiving devices using the code;
• and
• control a converter unit to convert a power signal to a resonant power signal and transmit the resonant power signal to the plurality of power receiving devices via a transmitting core based on the charge status information.

A wireless charging system, comprising:

• a plurality of power receiving devices;
• and
• a wireless charging apparatus to charge the plurality of power receiving devices using a resonant power signal, wherein the wireless charging apparatus comprises:
• a converter unit to convert a power signal to the resonant power signal and to transmit the resonant power signal to the plurality of power receiving devices via a transmitting core;
• and
• a controller configured to:
• provide a different code to each of the power receiving devices, wherein each different code indicates a different device identification of each of the power receiving devices for communication between the wireless charging apparatus and each of the power receiving devices;
• communicate with each of the power receiving devices to receive charge status information from each of the power receiving devices using the different code;
• and
• control the converter unit to transmit the resonant power signal based on the charge status information.

A power transmission device, comprising:

• a device case;
• a converter unit housed within the device case and configured to convert a power signal to a resonant power signal and to transmit the resonant power signal to a plurality of power receiving devices via a transmitting core;
• and
• a controller housed within the device case and configured to:
• provide a different code to each of the power receiving devices, wherein each different code indicates a different device identification of each of the power receiving devices for communication between the power transmission device and each of the power receiving devices;
• communicate with each of the power receiving devices to receive charge status information from each of the power receiving devices using the different code;
• and
• control the converter unit to transmit the resonant power signal based on the charge status information.