Patent ID: 11858355
Assignee: DENSO CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A vehicle power supply system mounted on a vehicle, the vehicle power supply system comprising:
a battery pack including a main battery;
a power converting apparatus configured to convert DC power of the main battery into AC power;
a switch configured to switch a state between energization and cutoff between the main battery and the power converting apparatus;
a first DC-DC converter connected to a power supply wiring between the switch and the power converting apparatus, the first DC-DC converter being configured to step up DC power to the main battery, and the first DC-DC converter being located integrally with the power converting apparatus within a single casing; and
a second DC-DC converter connected to a power supply wiring between the switch and the main battery, the second DC-DC converter being located integrally with the main battery inside the battery pack, wherein:
the first DC-DC converter and the second DC-DC converter are mounted at positions distant from each other on the vehicle,
one of the first DC-DC converter and the second DC-DC converter is mounted outside a vehicle interior of the vehicle, and the other is mounted inside the vehicle interior in the vehicle, and
a sub-battery is connected to the first DC-DC converter and the second DC-DC converter in series with the first DC-DC converter being positioned between the sub-battery and the second DC-DC converter in the series.