METHOD AND DEVICE FOR CONTROLLING THE LEVEL OF CHARGE OF A TRACTION BATTERY OF AN ELECTRIC VEHICLE

• Main Author: GOHIER, Aurelien
• Format: Patent
• Language: English
• Published: 04.07.2024
• Subjects: 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; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

A method for controlling a level of charge of a traction battery of an electric vehicle connected to an electricity distribution grid by way of a charger during a downtime phase of the vehicle. The method includes a first step of forcibly discharging the battery, performed in a discharging circuit associated with the battery, with a discharge current that is calibrated in terms of strength with respect to the nominal capacity of the battery, so as to slowly and completely discharge the battery to its minimum voltage, and a step of normally charging the battery with a setpoint charging current prescribed by the charger or the battery, so as to charge the battery to a useful level of charge of the battery.