US 12,206,258 B2
Apparatus and method for providing charging status information in wireless power transmission system
Jinkwon Lim, Seoul (KR); Jaehyu Kim, Seoul (KR); Yongcheol Park, Seoul (KR); Joonho Park, Seoul (KR); Taeyoung Song, Seoul (KR); and Jingu Choi, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 17/432,322
Filed by LG Electronics Inc., Seoul (KR)
PCT Filed Jul. 30, 2019, PCT No. PCT/KR2019/009493
§ 371(c)(1), (2) Date Aug. 19, 2021,
PCT Pub. No. WO2020/171316, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 10-2019-0019494 (KR), filed on Feb. 19, 2019.
Prior Publication US 2023/0134962 A1, May 4, 2023
Int. Cl. H02J 50/80 (2016.01); G06F 3/14 (2006.01); H02J 50/12 (2016.01); H04W 36/08 (2009.01)
CPC H02J 50/80 (2016.02) [G06F 3/14 (2013.01); H02J 50/12 (2016.02); H04W 36/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An apparatus for receiving wireless power from a wireless power transmitter and providing charging status information, the apparatus comprising:
a power pickup unit configured to receive the wireless power from the wireless power transmitter by magnetic coupling with the wireless power transmitter at an operating frequency and to convert an alternating current signal generated by the wireless power into a direct current signal;
a battery configured to be supplied with the direct current signal from the power pickup unit; and
a communication/control unit configured to be supplied with the direct current signal from the power pickup unit, to perform a handover procedure from in-band communication using the operating frequency into out-band communication using a frequency other than the operating frequency, to perform a procedure for selecting a priority display device to display charging status information on the battery through the out-band communication with the wireless power transmitter, and to generate the charging status information.