US 11,891,000 B2
Vehicular power supply device
Itaru Seta, Tokyo (JP); Hiroyuki Suzuki, Tokyo (JP); Yosuke Ohtomo, Tokyo (JP); Masaki Komuro, Tokyo (JP); Takashi Kono, Tokyo (JP); Kazuki Makino, Tokyo (JP); and Shinya Sagawa, Tokyo (JP)
Assigned to SUBARU CORPORATION, Tokyo (JP)
Filed by SUBARU CORPORATION, Tokyo (JP)
Filed on Aug. 25, 2021, as Appl. No. 17/411,923.
Claims priority of application No. 2020-155185 (JP), filed on Sep. 16, 2020.
Prior Publication US 2022/0080909 A1, Mar. 17, 2022
Int. Cl. B60R 16/00 (2006.01); B60R 16/033 (2006.01); H02J 7/00 (2006.01); B60L 50/51 (2019.01); H01M 10/44 (2006.01)
CPC B60R 16/033 (2013.01) [B60L 50/51 (2019.02); H01M 10/441 (2013.01); H02J 7/005 (2020.01); H02J 7/0048 (2020.01); B60L 2210/10 (2013.01); B60L 2210/40 (2013.01); H01M 2220/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A vehicular power supply device to be applied to a vehicle, the vehicular power supply device comprising:
an inverter;
a converter;
a driving motor;
an electric device group;
a first electric storage unit configured to be coupled to the driving motor via the inverter;
a second electric storage unit configured to be coupled to the electric device group via the converter;
an electric power converter provided between the first electric storage unit and the second electric storage unit and configured to couple the first electric storage unit and the second electric storage unit in parallel with each other;
a first switch provided between the first electric storage unit and the electric power converter and configured to be controlled between an on state and an off state;
a second switch provided between the second electric storage unit and the electric power converter and configured to be controlled between an on state and an off state; and
a switch controller configured to control the first switch and the second switch based on a state of charge of the first electric storage unit.