US 12,421,772 B2
Vehicle
Shu Nakayama, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Aug. 24, 2023, as Appl. No. 18/455,204.
Claims priority of application No. 2022-177428 (JP), filed on Nov. 4, 2022.
Prior Publication US 2024/0151076 A1, May 9, 2024
Int. Cl. H02J 7/34 (2006.01); B60R 16/033 (2006.01); E05B 81/04 (2014.01); E05B 81/86 (2014.01); H02J 7/00 (2006.01)
CPC E05B 81/86 (2013.01) [B60R 16/033 (2013.01); E05B 81/04 (2013.01); H02J 7/0063 (2013.01); H02J 7/345 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A vehicle comprising:
a load;
an in-vehicle power supply system including a main power supply, a redundant power supply, and a mechanical relay, the mechanical relay being configured to switch between a first connection state in which the main power supply and the load is connected and a second connection state in which the redundant power supply and the load is connected; and
a body electronic control unit configured to control the mechanical relay to switch between the first connection state and the second connection state, wherein the redundant power supply includes
a capacitor in series with the mechanical relay, the capacitor storing electric power;
a semiconductor relay inserted between the capacitor and the mechanical relay and in series with the capacitor and the mechanical relay;
a discharge circuit in parallel with the capacitor; and
a control device, and
the control device is configured to execute following processes in the order of (i) to (iii):
(i) switching the discharge circuit to a discharge state to cause the capacitor to discharge electric power after ignition of the vehicle is turned off,
(ii) controlling the semiconductor relay to be in a conductive state in response to the body electronic control unit controlling the mechanical relay to switch to the second connection state, and
(iii) controlling the semiconductor relay to be in a non-conductive state until a predetermined time has passed.