US 12,355,294 B2
Charging device
Junho Park, Cheongju-si (KR); Semin Woo, Seoul (KR); Seunghyun Han, Suwon-si (KR); and Changhan Jun, Hwaseong-si (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 Jun. 2, 2022, as Appl. No. 17/830,465.
Claims priority of application No. 10-2021-0096143 (KR), filed on Jul. 22, 2021.
Prior Publication US 2023/0027005 A1, Jan. 26, 2023
Int. Cl. H02J 7/00 (2006.01); H02J 7/06 (2006.01); H02M 1/42 (2007.01); H02M 1/44 (2007.01); H02M 3/00 (2006.01); H02M 3/335 (2006.01)
CPC H02J 7/06 (2013.01) [H02M 1/4233 (2013.01); H02M 1/44 (2013.01); H02M 3/01 (2021.05); H02M 3/33573 (2021.05); H02M 3/33584 (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;
a relay control circuit connected to the first, second, and third input terminals and configured to sense one of the first, second, and third input terminals to which a power source is connected and to control the relay network based on a sensing result; and
a relay filter circuit comprising:
first, second, and third filter capacitors connected between a ground plane and first, second, and third sensing lines connected to the relay control circuit and configured to sense voltages of the first, second, and third input terminals; and
a fourth filter capacitor connected between the ground plane and a chassis.