US 11,837,910 B2
Power supply control apparatus and control method
Takeshi Matsumoto, Kobe (JP); Daiki Hakushima, Kobe (JP); and Shunsuke Kobayashi, Kobe (JP)
Assigned to DENSO TEN Limited, Kobe (JP)
Filed by DENSO TEN Limited, Kobe (JP)
Filed on Mar. 18, 2022, as Appl. No. 17/698,413.
Claims priority of application No. 2021-205997 (JP), filed on Dec. 20, 2021.
Prior Publication US 2023/0198289 A1, Jun. 22, 2023
Int. Cl. H02J 9/06 (2006.01); B60L 3/00 (2019.01); B60L 53/20 (2019.01)
CPC H02J 9/061 (2013.01) [B60L 3/0069 (2013.01); B60L 53/20 (2019.02); H02J 9/068 (2020.01); B60L 2210/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A power supply control apparatus comprising:
a first system capable of supplying electric power from a first power supply to a first load;
a second system capable of supplying electric power from a second power supply to a load group including a second load and a third load having consumed electric power smaller than that of the second load;
an inter-system switch configured to connect or disconnect the first system and the second system;
a battery switch configured to connect or disconnect the second power supply and the second system;
a plurality of load switches capable of respectively switching electric power supply to each of the loads of the load group; and
at least one processor configured to control the load switches so that backup control performed by the second system is executed by the electric power supply from the second power supply, in a case where an occurrence of a ground fault in the first system is detected,
wherein when the at least one processor inspects as to whether the backup control can be executed, the at least one processor connects the load switch corresponding to the third load of the load group, and in a state in which the inter-system switch is disconnected and the battery switch is connected, supplies electric power from the second power supply to the third load for a predetermined time and executes the inspection based on a voltage of the second power supply after the predetermined time elapses.