US 12,132,349 B2
Power supply circuit of moving object
Manabu Mitani, Wako (JP); Sadao Shinohara, 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 Feb. 8, 2023, as Appl. No. 18/165,974.
Claims priority of application No. 2022-019192 (JP), filed on Feb. 10, 2022; and application No. 2022-209556 (JP), filed on Dec. 27, 2022.
Prior Publication US 2023/0253820 A1, Aug. 10, 2023
Int. Cl. B60L 3/04 (2006.01); B60L 50/60 (2019.01); B60L 58/18 (2019.01); B64D 27/24 (2006.01); H02J 9/06 (2006.01)
CPC H02J 9/068 (2020.01) [B60L 3/04 (2013.01); B60L 50/60 (2019.02); B60L 58/18 (2019.02); B64D 27/24 (2013.01); H02J 9/061 (2013.01); B60L 2200/10 (2013.01); H02J 2310/44 (2020.01)] 7 Claims
OG exemplary drawing
 
1. A power supply circuit of a moving object, the power supply circuit comprising:
a first power transmission path configured to transmit electric power from one first power source and at least one second power source to one first load and at least one second load;
a first contactor unit configured to switch between a conduction state in which electricity flows and an interruption state in which flow of electricity is interrupted, between the first power source and the first power transmission path;
at least one second contactor unit configured to switch between the conduction state and the interruption state, between the at least one second power source and the first power transmission path;
a third contactor unit configured to switch between the conduction state and the interruption state, between the first load and the first power transmission path;
at least one fourth contactor unit configured to switch between the conduction state and the interruption state, between the at least one second load and the first power transmission path;
a first current sensor configured to detect a current between the first contactor unit and the first power transmission path;
at least one second current sensor configured to detect a current between the at least one second contactor unit and the first power transmission path;
a third current sensor configured to detect a current between the third contactor unit and the first power transmission path;
at least one fourth current sensor configured to detect a current between the at least one fourth contactor unit and the first power transmission path;
a second power transmission path provided in parallel with the first power transmission path and configured to transmit electric power from the one first power source and the at least one second power source to the one first load and the at least one second load;
a fifth contactor unit configured to switch between the conduction state and the interruption state, between the first power source and the second power transmission path;
at least one sixth contactor unit configured to switch between the conduction state and the interruption state, between the at least one second power source and the second power transmission path;
a seventh contactor unit configured to switch between the conduction state and the interruption state, between the first load and the second power transmission path; and
at least one eighth contactor unit configured to switch between the conduction state and the interruption state, between the at least one second load and the second power transmission path,
wherein when the first contactor unit, the at least one second contactor unit, the third contactor unit, and the at least one fourth contactor unit are in the conduction state, determination is made as to whether or not an abnormality has occurred in the first power transmission path, whether or not an abnormality has occurred between the first power source and the first contactor unit, and whether or not an abnormality has occurred between the first load and the third contactor unit, based on the current detected by each of the first current sensor, the at least one second current sensor, the third current sensor, and the at least one fourth current sensor, and
wherein each of the fifth contactor unit, the at least one sixth contactor unit, the seventh contactor unit, and the at least one eighth contactor unit is brought into the conduction state or the interruption state based on a result of the determination as to whether or not the abnormality has occurred in the first power transmission path, whether or not the abnormality has occurred between the first power source and the first contactor unit, and whether or not the abnormality has occurred between the first load and the third contactor unit.