US 12,119,671 B2
Method and apparatus for controlling wireless power transmission
Yu Ri Park, Seoul (KR); and Yong Il Kwon, Seoul (KR)
Assigned to LG INNOTEK CO., LTD., Seoul (KR)
Filed by LG INNOTEK CO., LTD., Seoul (KR)
Filed on Jul. 20, 2023, as Appl. No. 18/355,897.
Application 18/355,897 is a continuation of application No. 18/117,631, filed on Mar. 6, 2023.
Application 18/117,631 is a continuation of application No. 17/830,993, filed on Jun. 2, 2022, granted, now 11,626,762, issued on Apr. 11, 2023.
Application 17/830,993 is a continuation of application No. 17/055,404, granted, now 11,381,119, issued on Jul. 5, 2022, previously published as PCT/KR2019/005881, filed on May 16, 2019.
Claims priority of application No. 10-2018-0056166 (KR), filed on May 16, 2018; and application No. 10-2018-0068751 (KR), filed on Jun. 15, 2018.
Prior Publication US 2023/0361621 A1, Nov. 9, 2023
Int. Cl. H02J 50/60 (2016.01); H02J 7/02 (2016.01); H02J 50/12 (2016.01); H02J 50/20 (2016.01); H02J 50/80 (2016.01); H02J 50/90 (2016.01); H04L 5/00 (2006.01); H02J 50/40 (2016.01)
CPC H02J 50/60 (2016.02) [H02J 7/02 (2013.01); H02J 50/12 (2016.02); H02J 50/20 (2016.02); H02J 50/80 (2016.02); H02J 50/90 (2016.02); H04L 5/0055 (2013.01); H02J 50/402 (2020.01)] 8 Claims
OG exemplary drawing
 
1. A method of transmitting power of a wireless power transmitter, comprising:
a receiving phase of receiving a signal including an FOD status packet from a wireless power receiver;
a first determination phase of determining whether a foreign object is present in a charging area of the wireless power transmitter based on the FOD status packet;
a power control phase of controlling power transmission in a first power transfer mode upon determining that the foreign object is present in the charging area in the first determination phase, or controlling power transmission in a second power transfer mode upon determining that the foreign object is not present in the charging area in the first determination phase; and
a second determination phase of determining whether the foreign object is present in the charging area based on information other than information included in the FOD status packet, while controlling power transmission in one of the first power transfer mode and the second power transfer mode by the power control phase,
wherein the FOD status packet includes a first FOD status packet and a second FOD status packet;
wherein the first FOD status packet includes one of a reference quality factor or a reference peak frequency; and
wherein the second FOD status packet includes the other of the reference quality factor and the reference peak frequency that is different from the first FOD status packet.