US 11,728,674 B2
Power source control device
Hikaru Shibata, Okazaki (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Feb. 9, 2022, as Appl. No. 17/650,403.
Claims priority of application No. 2021-029270 (JP), filed on Feb. 25, 2021.
Prior Publication US 2022/0271559 A1, Aug. 25, 2022
Int. Cl. B60L 3/00 (2019.01); G01R 31/54 (2020.01); G05D 1/00 (2006.01); H02J 9/06 (2006.01); B60R 16/033 (2006.01); G01R 31/387 (2019.01); B60L 58/18 (2019.01); H02J 7/00 (2006.01)
CPC H02J 9/061 (2013.01) [B60L 58/18 (2019.02); B60R 16/033 (2013.01); G01R 31/387 (2019.01); H02J 7/0025 (2020.01); H02J 7/007182 (2020.01)] 7 Claims
OG exemplary drawing
 
1. A power source control device for a vehicle comprising:
a detector configured to detect failure of a main power source; and
a controller configured to perform operational control of a component supplied with power from a sub battery such that a predetermined guaranteed voltage is maintained for at least a predetermined requested duration in cases in which failure of the main power source has been detected by the detector during autonomous driving of the vehicle,
wherein, when the failure of the main power source has been detected, as the operational control, the controller is configured to:
control operation timings and cause operation, by the sub battery, of a plurality of predetermined components that draw an inrush current, regardless of whether or not there is a request for the operation of the predetermined components at a time when the failure of the main power source has been detected, and
cause the predetermined components that draw the inrush current to operate prior to a failure of a voltage of the sub battery by preventing the voltage of the sub battery from dropping to or below the guaranteed voltage.