US 11,724,612 B2
Bidirectional charging system for vehicle
Jae Hyun Kim, Incheon (KR); Hyun-Wook Seong, Hwaseong-si (KR); and Dong Gyun Woo, 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. 17/830,543.
Claims priority of application No. 10-2021-0090346 (KR), filed on Jul. 9, 2021.
Prior Publication US 2023/0011289 A1, Jan. 12, 2023
Int. Cl. B60L 53/60 (2019.01); B60L 53/24 (2019.01); H02M 7/797 (2006.01); H02J 7/00 (2006.01); H02J 3/32 (2006.01); H02M 3/335 (2006.01); B60L 50/60 (2019.01); H02M 1/42 (2007.01); H02P 27/06 (2006.01)
CPC B60L 53/24 (2019.02) [B60L 50/60 (2019.02); H02J 3/322 (2020.01); H02J 7/0068 (2013.01); H02M 1/4208 (2013.01); H02M 3/33573 (2021.05); H02M 3/33584 (2013.01); H02M 7/797 (2013.01); B60L 2210/30 (2013.01); H02J 2207/20 (2020.01); H02J 2310/48 (2020.01); H02P 27/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A bidirectional charging system for a vehicle, the system comprising:
a first bridge circuit having a plurality of legs each comprising two first switching elements connected in series with each other between ends of a battery;
a transformer comprising a plurality of primary-side windings to be connected to a grid or load side and a plurality of secondary-side windings insulated from the plurality of primary-side windings;
a motor comprising a plurality of input terminals configured to receive a plurality of phase voltages, respectively;
a plurality of changeover switches configured to selectively connect connection nodes of the two first switching elements included in the plurality of legs to the plurality of secondary-side windings or to the plurality of input terminals, respectively; and
a controller configured to control connection states of the plurality of changeover switches according to a pre-configured operation mode, wherein, in a first operation mode in which the motor is driven while the vehicle is traveling, the controller is configured to control the plurality of changeover switches such that the connection nodes of the first switching elements included in respective legs of the first bridge circuit are electrically connected to the input terminals of the motor.