US 12,142,947 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. 18/355,870.
Application 18/355,870 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 2023/0361619 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
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)] 10 Claims
OG exemplary drawing
 
1. A wireless power transmitter for transmitting power to a wireless power receiver, comprising:
a controller configured to determine whether a foreign object is present; and
a transmission part configured to transmit wireless power according to whether the foreign object is present,
wherein the controller receives a foreign object detection status packet including at least one of a reference quality factor and a reference peak frequency from the wireless power receiver, and detects whether the foreign object is present based on the foreign object detection status packet,
wherein the controller transmits a NAK response indicating that the foreign object is present or an ACK response indicating that the foreign object is not present to the wireless power receiver, and
wherein the transmission part transmits a first power to the wireless power receiver according to the transmitted NAK response or transmits a second power greater than the first power to the wireless power receiver according to the transmitted ACK response.