US 9,812,893 B2
Wireless power receiver
Joon-Il Kim, Seoul (KR); Sung-Bum Park, Gyeonggi-do (KR); Se-Ho Park, Gyeonggi-do (KR); Young-Min Lee, Gyeonggi-do (KR); and Woo-Ram Lee, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on Aug. 19, 2016, as Appl. No. 15/241,887.
Application 15/241,887 is a continuation of application No. 13/548,660, filed on Jul. 13, 2012, granted, now 9,425,629.
Claims priority of application No. 10-2011-0070120 (KR), filed on Jul. 14, 2011; application No. 10-2011-0070603 (KR), filed on Jul. 15, 2011; and application No. 10-2012-0075383 (KR), filed on Jul. 11, 2012.
Prior Publication US 2016/0359357 A1, Dec. 8, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 7/00 (2006.01); H01F 27/42 (2006.01); H02J 7/02 (2016.01); H02J 7/04 (2006.01); H02J 50/10 (2016.01)
CPC H02J 7/025 (2013.01) [H02J 7/00 (2013.01); H02J 7/0021 (2013.01); H02J 7/045 (2013.01); H02J 50/10 (2016.02); H02J 2007/0096 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A wireless power receiver configured to wirelessly receive charging power from a wireless power transmitter, the wireless power receiver comprising:
a power reception unit configured to wirelessly receive the charging power from the wireless power transmitter;
a rectifier configured to rectify the charging power from the power reception unit;
a load unit configured to store the rectified charging power from the rectifier;
an impedance adjuster connected to the power reception unit, wherein the impedance adjuster and the rectifier are connected to each other in parallel;
a switch configured to selectively connect the impedance adjuster to the power reception unit; and
a controller configured to:
control the switch not to connect the impedance adjuster to the power reception unit,
detect a change of a charging mode for the load unit while the impedance adjuster is not connected to the power reception unit, and
control the switch to connect the impedance adjuster to the power reception unit for adjusting an impedance in the power reception unit according to the change of the charging mode.