Patent ID: 11942800
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An electronic device comprising:
a battery;
a charging circuit configured to control a charging state of the battery;
a coil;
a wireless power transfer circuit configured to be electrically connected to the coil; and
a control circuit,
wherein the control circuit is configured to:
identify a state related to charging of the battery;
transmit a wireless charging parameter related to generation or modification of a power signal to be transmitted to an external electronic device through the coil, the wireless charging parameter being determined at least based on the state related to charging of the battery;
receive a response signal corresponding to transmission of the wireless charging parameter from the external electronic device;
generate, based on the response signal, a power signal corresponding to an amount of wireless transmission power determined at least based on the response signal using the wireless power transfer circuit;
transmit the power signal to the external electronic device through the coils,
in case that an external power supply device is connected to the electronic device:
identify an amount of power flowing into the electronic device from the external power supply device,
determine a transferrable power amount based on the amount of power flowing into the electronic device from the external power supply device and a power amount for charging the battery of the electronic device,
if the transferrable power amount is less than a first threshold, transmit the wireless charging parameter including an information that the control circuit is disable to transmit the power signal to the external electronic device through a radio access technology (RAT), and
if the transferrable power amount is equal or greater than the first threshold, transmit the power signal to the external electronic device through the coil,
wherein the transferrable power amount is determined by subtracting the power amount for charging the battery of the electronic device from the power flowing into the electronic device from the external power supply device, and

in case that the external power device is not connected to the electronic device:
if an amount of remaining battery is less than a second threshold, transmit the wireless charging parameter including the information that the control circuit is disable to transmit the power signal to the external electronic device through the RAT, and
if the amount of remaining battery is equal or greater than the second threshold, transmit the power signal to the external electronic device through the coil.