US 12,142,948 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. 18/356,056.
Application 18/356,056 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 2023/0369912 A1, Nov. 16, 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)] 9 Claims
OG exemplary drawing
 
1. A method of transmitting power of a wireless power transmitter, comprising:
a reception 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 if when it is determined in the first determination phase that the foreign object is present in the charging area, and controlling power transmission in a second power transfer mode when it is determined in the first determination phase that the foreign object is not present in the charging area;
a phase of receiving a reception power packet including information on a reception power intensity from the wireless power receiver;
a phase of determining the reception power intensity of the wireless power receiver based on information on the reception power intensity;
a phase of measuring or calculating a power loss based on a difference between the determined reception power intensity and the transmission power intensity of the wireless power transmitter;
a phase of correcting any one of a transmission power, a reception power, and a loss of power using the power loss; and
a second determination phase of determining whether the foreign object is present in the charging area while controlling power transmission in 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.