US 11,658,502 B2
Power supply system
Minoru Nagasawa, Saitama (JP); Hirokazu Oguma, Saitama (JP); Arata Ohishi, Saitama (JP); Yasuo Yamada, Saitama (JP); and Yoshihiro Kanamaru, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Feb. 23, 2022, as Appl. No. 17/678,017.
Claims priority of application No. JP2021-046084 (JP), filed on Mar. 19, 2021.
Prior Publication US 2022/0302736 A1, Sep. 22, 2022
Int. Cl. H02J 7/00 (2006.01); B60L 53/20 (2019.01); B60L 58/18 (2019.01); H02M 3/158 (2006.01); H02P 27/08 (2006.01)
CPC H02J 7/007182 (2020.01) [B60L 53/20 (2019.02); B60L 58/18 (2019.02); H02J 7/0013 (2013.01); H02J 7/0048 (2020.01); H02J 7/0063 (2013.01); H02J 2207/20 (2020.01); H02M 3/158 (2013.01); H02P 27/08 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A power supply system comprising:
a first power circuit having a first electrical storage device;
a second power circuit having a second electrical storage device having a use voltage range relative to a closed circuit voltage which overlaps the first electrical storage device and a static voltage which is lower than the first electrical storage device;
a voltage converter which converts voltage between the first power circuit and the second power circuit;
a power converter which converts power between the first power circuit and a rotary electrical machine;
a power control unit for controlling charge/discharge of the first electrical storage device and the second electrical storage device by operating the voltage converter and the power converter;
a first voltage parameter acquisition unit for acquiring a first voltage parameter corresponding to a closed circuit voltage of the first electrical storage device; and
a second voltage parameter acquisition unit for acquiring a second voltage parameter corresponding to a static voltage of the second electrical storage device,
wherein the power control unit causes power to be discharged from the second electrical storage device so that the second voltage parameter becomes no more than the first voltage parameter.