US 12,081,019 B2
Power supply system
Manabu Mitani, Wako (JP); and Masataka Yoshida, Wako (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP)
Filed by HONDA MOTOR CO., LTD., Tokyo (JP)
Filed on Mar. 29, 2023, as Appl. No. 18/192,153.
Claims priority of application No. 2022-058574 (JP), filed on Mar. 31, 2022.
Prior Publication US 2023/0327432 A1, Oct. 12, 2023
Int. Cl. H02J 1/08 (2006.01); H02J 1/10 (2006.01)
CPC H02J 1/086 (2020.01) [H02J 1/10 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A power supply system comprising:
a first main power source circuit configured to transmit direct current power from at least one main power source apparatus to at least one load apparatus;
a second main power source circuit provided in parallel with the first main power source circuit, and configured to transmit direct current power from the at least one main power source apparatus to the at least one load apparatus;
a ground circuit connected to the second main power source circuit, and configured to connect the second main power source circuit to a reference potential; and
one or more processors that execute computer-executable instructions stored in a memory, wherein
the one or more processors execute the computer-executable instructions to cause the power supply system to, in a case where power is being transmitted from the main power source apparatus to the load apparatus by the first main power source circuit and power is not being transmitted from the main power source apparatus to the load apparatus by the second main power source circuit:
disconnect both a positive wire and a negative wire between the load apparatus and the ground circuit, connect one of a positive wire or a negative wire between the main power source apparatus and the ground circuit, and determine whether there is an abnormality in the second main power source circuit based on an amount of power supplied to the ground circuit in a state where one of a positive wire or a negative wire of the second main power source circuit is connected to the reference potential by the ground circuit; or
disconnect both the positive wire and the negative wire between the main power source apparatus and the ground circuit, connect one of the positive wire or the negative wire between the load apparatus and the ground circuit, and determine whether there is an abnormality in the second main power source circuit based on the amount of power supplied to the ground circuit in the state where one of the positive wire or the negative wire of the second main power source circuit is connected to the reference potential by the ground circuit.