US 12,224,581 B2
Bidirectional converter and control method thereof
Ho Joong Lee, Anyang-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 Jan. 19, 2023, as Appl. No. 18/099,190.
Claims priority of application No. 10-2022-0105689 (KR), filed on Aug. 23, 2022.
Prior Publication US 2024/0072536 A1, Feb. 29, 2024
Int. Cl. H02J 7/34 (2006.01); B60L 50/60 (2019.01); B60L 58/12 (2019.01); B60L 58/18 (2019.01); H02J 1/08 (2006.01); H02J 7/00 (2006.01); H02M 1/00 (2006.01)
CPC H02J 1/084 (2020.01) [B60L 50/60 (2019.02); B60L 58/12 (2019.02); B60L 58/18 (2019.02); H02J 7/0047 (2013.01); H02J 7/0063 (2013.01); H02J 7/00712 (2020.01); H02M 1/0067 (2021.05); H02J 2207/20 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A power supply apparatus comprising:
a low-voltage direct current-direct current converter (LDC) configured to convert a voltage of a high-voltage battery to supply power;
a first low-voltage battery configured to be charged by receiving the power from the LDC and supply power to a predetermined load;
a bidirectional converter configured to convert a voltage supplied from the LDC and control a charge amount of a second low-voltage battery;
the second low-voltage battery configured to be charged by receiving power from the bidirectional converter and supply power to a dual power source load;
a first relay disposed between the LDC and the first low-voltage battery;
a second relay disposed between the bidirectional converter and the second low-voltage battery;
a battery sensor configured to measure a voltage of the second low-voltage battery; and
a control unit configured to control the bidirectional converter to charge the second low-voltage battery.