US 12,237,697 B2
Wireless charging device, method and system for negotiating power class by using short range wireless communication
Minsoo Lee, Seoul (KR); Jinkwon Lim, Seoul (KR); and Jingu Choi, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 17/607,973
Filed by LG Electronics Inc., Seoul (KR)
PCT Filed Mar. 5, 2020, PCT No. PCT/KR2020/003092
§ 371(c)(1), (2) Date Nov. 1, 2021,
PCT Pub. No. WO2020/222415, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. 10-2019-0050906 (KR), filed on Apr. 30, 2019.
Prior Publication US 2022/0294272 A1, Sep. 15, 2022
Int. Cl. H02J 50/80 (2016.01); H02J 13/00 (2006.01); H02J 50/12 (2016.01); H02J 50/40 (2016.01); H02J 50/60 (2016.01)
CPC H02J 50/80 (2016.02) [H02J 13/00026 (2020.01); H02J 50/12 (2016.02); H02J 50/402 (2020.01); H02J 50/60 (2016.02)] 2 Claims
OG exemplary drawing
 
1. A wireless power receiver comprising:
a power pick-up configured to:
receive, from a wireless power transmitter, an advertising packet including power class information for the wireless power transmitter; and
a communicator/controller configured to:
perform an in-band communication with the wireless power transmitter,
wherein the communicator/controller is further configured to:
perform a ping phase related to receiving a digital ping from the wireless power transmitter and transmitting a signal strength data packet via the in-band communication, after receiving the advertising packet,
perform a configuration phase related to transmitting a configuration data packet to the wireless power transmitter via the in-band communication, after performing the ping phase, and
perform a negotiation for a power class with the wireless power transmitter based on the power class information, after performing the configuration phase,
wherein the power class information includes power state information, mode information, and power class state information for each of coils among a plurality of coils supported by the wireless power transmitter, and
wherein the wireless power receiver is configured to, in a coverage on which (i) the in-band communication between the wireless power receiver and the wireless power transmitter is not available and (ii) an out-band communication between the wireless power receiver and the wireless power transmitter is available, receive the advertising packet including the power class information from the wireless power transmitter via the out-band communication, periodically.