Vehicle power supply device and malfunction diagnosis method thereof

• Main Authors: Ishii Kentaro, Masuda Yo
• Format: Patent
• Language: English
• Published: 06.02.2018
• Subjects: ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE; CHECKING-DEVICES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATING RANDOM NUMBERS; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PHYSICS; REGISTERING OR INDICATING THE WORKING OF MACHINES; TIME OR ATTENDANCE REGISTERS; TRANSPORTING; VEHICLES IN GENERAL; VOTING OR LOTTERY APPARATUS

A vehicle power supply device including a power storage device includes: an inlet that is coupled to an external power supply via a charging cable when the power storage device is charged using the external power supply; an outlet that is coupled to an external device when power is supplied from the power storage device to the external device; a first power converter that is formed between the inlet and the power storage device and converts alternating current (AC) power into direct current (DC) power; a second power converter that is formed between the outlet and the power storage device and converts DC power into AC power; and a malfunction diagnosis unit that diagnoses malfunction of a power supply path in a state in which the inlet and the outlet are coupled to each other using the charging cable.