Patent ID: 11903040
Assignee: KIA MOTORS CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 8:
9. A communication establishment apparatus of an electric vehicle (EV) being supplied power from a power supply device, the communication establishment apparatus comprising:
a processor; and
a memory configured to store processor-readable instructions that, when executed by the processor, cause the processor to:
scan beacon broadcast in a low-level communication scheme from a plurality of chargers;
calculate signal attenuations for a plurality of scanned beacon signals;
select an electric vehicle supply equipment (EVSE) associated with a charger of the plurality of chargers that transmits a first beacon signal having the minimum signal attenuation;
confirm weather a first EVSE information acquired through the first beacon signal matches a second EVSE information in a vendor specific element (VSE) information acquired through a probe response with the selected EVSE or a wireless local area network (WLAN) beacon from the selected EVES;
establish a communication connection with the selected EVSE when the first and second EVSE information are matched;
after establishment of the communication connection with the selected EVSE, compare the signal attenuation of the first beacon signal with a signal attenuation of a second beacon signal of the plurality of beacon signals transmitted by another charger of the plurality of chargers associated with another EVSE with which a communication connection has not been established; and
determine weather the signal attenuation value of the first beacon signal is lower than the signal attenuation value of the second beacon signal and whether a position alignment for wireless power transfer of the EV is completed;
wherein the calculation, selection, confirmation, establishment, comparison, and determination are repeated when the signal attenuation value of the first beacon signal is greater than or equal to the signal attenuation value of the second beacon signal or when the position alignment is not completed.