US 2023/0415608 A1 · VEHICLE CONTROL SYSTEM

Abstract

A vehicle control system is capable of implementing a fail operation while ensuring safety of traveling of a vehicle even when a power source function failure of a battery occurs. The vehicle control system includes an HV battery, first, second, third and fourth high-voltage relays that are redundantly arranged on an upstream side and a downstream side of the HV battery, a first and second DC-DC converters that are connected to the relays, a first and second high-voltage SW control units that are disposed on a downstream side of the converters and control the relays, and an in-vehicle battery disposed on a downstream side of the second DC-DC converter. The first high-voltage SW control unit and the second high-voltage SW control unit interrupt the relays and control a vehicle based on electric power of the in-vehicle battery on condition that an abnormality of the HV battery is detected.

Claims9

Dependent claims

A vehicle control system for a hybrid vehicle having two different drive systems, the vehicle control system comprising:

a first battery;
a second battery;
a relay circuit disposed on an upstream side and a downstream side of the first battery;
a first DC-DC converter connected to the relay circuit;
a second DC-DC converter connected to the relay circuit and connected in parallel to the first DC-DC converter;
a first relay control unit that controls the relay circuit;
a second relay control unit that controls the relay circuit;
a first drive control unit that controls the first drive system;
and
a second drive control unit that controls the second drive system,
wherein
the first relay control unit and the first drive control unit are connected to a downstream side of the first DC-DC converter,
the second relay control unit, the second battery, and the second drive control unit are connected to a downstream side of the second DC-DC converter,
the first relay control unit and the second relay control unit interrupt the relay circuit on condition that an abnormality of the first battery is detected, and
the second drive control unit performs control to drive the second drive system using electric power of the second battery as a power source in response to the interruption of the relay circuit.

12 more elements

Dependencies are inferred from the claim text.

Vehicle control system

Life of this patent

Vehicle control system

Life of this patent

Abstract

Claims9