US 11,942,812 B2
Battery control method and battery system enabling battery control method
Hojoong Lee, Anyang-si (KR); Hyeseung Kim, Gunpo-si (KR); and Youngjin Jang, 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 Aug. 27, 2021, as Appl. No. 17/459,666.
Claims priority of application No. 10-2020-0189775 (KR), filed on Dec. 31, 2020.
Prior Publication US 2022/0209543 A1, Jun. 30, 2022
Int. Cl. H02J 7/00 (2006.01); B60L 53/14 (2019.01); B60L 53/20 (2019.01); B60L 53/22 (2019.01); B60L 58/12 (2019.01); H02J 7/02 (2016.01)
CPC H02J 7/007 (2013.01) [B60L 53/14 (2019.02); B60L 53/20 (2019.02); B60L 53/22 (2019.02); B60L 58/12 (2019.02); H02J 7/02 (2013.01); H02J 2310/48 (2020.01)] 5 Claims
OG exemplary drawing
 
1. A battery system, comprising:
a main battery;
an inlet connected to an external charger through an outlet;
a bidirectional on-board charger (OBC) configured to:
in a charging mode, convert an alternating current (AC) power supplied from the external charger through the inlet to a direct current (DC) power to charge the main battery;
in a discharge mode, convert a high voltage DC power discharged from the main battery to a low voltage DC power to supply the converted power to a load;
a relay comprising a single pole double through (SPDT) circuit configured to switch an electrical connection between the bidirectional OBC and the inlet, or to switch an electrical connection between the bidirectional OBC and the load; and
a controller configured to:
in the charging mode, transfer, to the bidirectional OBC, an AC-DC power control signal instructing conversion from the AC power to the DC power; and
in the discharge mode, transfer, to the bidirectional OBC, a DC-DC power control signal instructing conversion from the high voltage DC power to the low voltage DC power;
wherein the controller is further configured to:
determine to operate in the charging mode when a connection signal of the inlet and a key-off signal are received; and
determine to operate in the discharge mode when a disconnection signal of the inlet and a key-on signal are received.