DUAL VOLTAGE ELECTRICAL ARCHITECTURE FOR A VEHICLE, IN WHICH THE ONLY POWER SOURCE IS A LITHIUM-ION BATTERY

• Main Authors: NEDJIMI, Ahcene, MOREL, Xavier, BRUYERE, Lilian
• Format: Patent
• Language: English
• Published: 30.05.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

A dual voltage electrical architecture for a vehicle, including a low-voltage network, a high-voltage network and a DC/DC converter for transferring power from the high-voltage network to the low-voltage network, the electrical architecture further including a lithium-ion battery, a first and second contactors connected respectively to a positive and a negative terminals of the lithium-ion battery, a pre-charge circuit consisting of a pre-charge contactor and a pre-charge resistor connected in series, wherein the pre-charge contactor and the pre-charge resistor are connected in parallel with the first contactor, a battery management unit for controlling the opening and closing of the contactors and a vehicle start device. The DC/DC converter includes a first input terminal connected to the first contactor and to the pre-charge contactor and a second input terminal connected to the second contactor. The only power source of the architecture is the lithium-ion battery delivering power to the high-voltage network.