US 12,126,198 B2
Power supply device and control method for power supply device
Daisuke Ueo, Toyota (JP); Ryota Tanabe, Kariya (JP); and Yohei Imai, Kariya (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jun. 20, 2023, as Appl. No. 18/211,629.
Claims priority of application No. 2022-125543 (JP), filed on Aug. 5, 2022.
Prior Publication US 2024/0047981 A1, Feb. 8, 2024
Int. Cl. H02J 7/00 (2006.01); H02M 3/155 (2006.01)
CPC H02J 7/00308 (2020.01) [H02J 7/0068 (2013.01); H02M 3/155 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A power supply device comprising:
a battery;
an external interface electrically connected to the battery and electrically attachable to or detachable from an external device;
a voltage converter provided between the battery and the external interface;
a low-voltage circuit that branches from an interface connection circuit connecting the external interface and the voltage converter and is connected to a low-voltage load having a rated voltage lower than a voltage of the battery;
an interrupt circuit provided in the low-voltage circuit and configured to electrically interrupt the low-voltage circuit and the interface connection circuit; and
an electronic control unit configured to control operations of the voltage converter and the interrupt circuit,
wherein the electronic control unit is configured to operate the interrupt circuit when a voltage of the interface connection circuit exceeds the rated voltage of the low-voltage load.