In-vehicle power supply device

Abstract

An in-vehicle power supply device is used in an in-vehicle power supply system The in-vehicle power supply system includes a battery a power path to which power based on the battery is supplied, and a capacitor electrically connected to the power path The in-vehicle power supply device includes a first circuit (e.g., a precharge circuit and a second circuit (e.g., a relay circuit The first circuit (e.g., the precharge circuit performs a precharge operation of precharging the capacitor. The second circuit (e.g., the relay circuit has a configuration in which a plurality of relays (e.g., first relays are connected in parallel, and is provided on the power path closer to the battery than is the capacitor

Dependencies are inferred from the claim text.