US 12,090,874 B2
Charging device
Changhan Jun, Hwaseong-si (KR); Junho Park, Cheongju-si (KR); Seunghyun Han, Suwon-si (KR); and Semin Woo, Seoul (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Mar. 17, 2022, as Appl. No. 17/697,365.
Claims priority of application No. 10-2021-0083676 (KR), filed on Jun. 28, 2021.
Prior Publication US 2022/0410740 A1, Dec. 29, 2022
Int. Cl. B60L 53/22 (2019.01); B60L 53/14 (2019.01); H02M 1/42 (2007.01)
CPC B60L 53/22 (2019.02) [B60L 53/14 (2019.02); H02M 1/4216 (2013.01); H02M 1/4233 (2013.01); H02J 2207/20 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A charging device comprising:
a power factor correction (PFC) circuit comprising first, second and third inductors and first, second and third switch legs connected to the first, second and third inductors, respectively;
a relay network configured to control connection between the first, second and third inductors and first, second and third input terminals according to a phase of a power grid connected to the first, second and third input terminals, wherein the relay network comprises a first relay connected between a neutral point and the third inductor; and
a capacitor having a first end connected to the neutral point with respect to the first, second and third input terminals and a second end connected to ground, wherein the first end of the capacitor is positioned closer to the neutral point than the first relay.