US 12,330,503 B2
Power supply control method and power supply control device
Shinji Nakajima, Kanagawa (JP); Toshiyuki Koide, Kanagawa (JP); Kenichi Gotou, Kanagawa (JP); and Hirotaka Koyama, Kanagawa (JP)
Assigned to Nissan Motor Co., Ltd., Yokohama (JP)
Appl. No. 17/920,671
Filed by Nissan Motor Co., Ltd., Yokohama (JP)
PCT Filed Apr. 27, 2020, PCT No. PCT/JP2020/017955
§ 371(c)(1), (2) Date Oct. 21, 2022,
PCT Pub. No. WO2021/220340, PCT Pub. Date Nov. 4, 2021.
Prior Publication US 2023/0150366 A1, May 18, 2023
Int. Cl. B60L 1/02 (2006.01); B60L 50/60 (2019.01)
CPC B60L 1/02 (2013.01) [B60L 50/60 (2019.02); B60L 2210/10 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A power supply control method for a power supply control device including:
a high-power battery;
a low-power battery;
a relay that electrically connects the high-power battery and the low-power battery;
a power supply switch; and
a controller that receives at least a door unlock signal for unlocking a vehicle door and a first signal for turning off the relay and controls an on/off state of the relay, the power supply control method comprising:
when the controller receives the door unlock signal, switching a power supply position which switches a power supply state from a state where the power supply switch is turned off to a state where power is supplied from the high-power battery to the low-power battery with the relay; and
when the controller receives the first signal, switching the relay from an on state to an off state and then inhibiting the relay from switching from the off state to the on state due to reception of the door unlock signal.