US 12,381,420 B2
Wireless power receiver and wireless power transmitter
Nah Young Kim, Gyeonggi-do (KR); Seung Hwan Lee, Gyeonggi-do (KR); Jong Hak Choi, Gyeonggi-do (KR); and Tae Kyoung Kim, Gyeonggi-do (KR)
Assigned to SKC CO., LTD., Gyeonggi-do (KR)
Filed by SKC CO., LTD., Gyeonggi-do (KR)
Filed on Oct. 7, 2022, as Appl. No. 17/962,000.
Application 17/962,000 is a continuation of application No. PCT/KR2021/011511, filed on Aug. 27, 2021.
Claims priority of application No. 10-2020-0108384 (KR), filed on Aug. 27, 2020.
Prior Publication US 2023/0057615 A1, Feb. 23, 2023
Int. Cl. H02J 50/12 (2016.01); H02J 50/00 (2016.01); H02J 50/80 (2016.01)
CPC H02J 50/12 (2016.02) [H02J 50/005 (2020.01); H02J 50/80 (2016.02)] 10 Claims
OG exemplary drawing
 
1. A wireless power receiver comprising:
a receiving pad configured to receive power transmitted from a wireless power transmitter including a transmitting pad and a transmitting side resonant inductor; and
a receiving side resonant network including a receiving side resonant inductor that controls power supplied to the receiving pad,
wherein a first inductance of the receiving side resonant inductor and a second inductance of the transmitting side resonant inductor are determined to be different from each other,
wherein, when the receiving pad has a permeability greater than 300 H/m and a ratio between the first inductance and the second inductance is less than 1, a heat generation temperature variation rate, measured during 30 minutes from a time the power is received from the wireless power transmitter, is less than or equal to 2.0° C./min.