BATTERY MANAGEMENT METHOD FOR A HYBRID VEHICLE CAPABLE OF RECOVERING MORE ELECTRIC POWER DURING A REGENERATIVE BREAKING PROCESS BY CHANGING A PREDETERMINED UPPER LIMIT VALUE REQUIRED FOR DISCHARGING INTO A HIGHER UPPER LIMIT VALUE WHEN A VEHICLE RUNS UPHILL

摘要

PURPOSE: A battery management method for a hybrid vehicle is provided to reduce unnecessary energy recirculation and to recover more electric power during a regenerative braking by controlling the charging and discharging limit of SOC(State Of Charge) according to a road grade.;CONSTITUTION: A battery management method for a hybrid vehicle comprises the following steps: The road gradient on which a vehicle travels is determined by a road gradient detection unit installed on the vehicle. The range of charge and discharge is setup as a first range when the car runs uphill, and the range of charge and discharge is set up as a second range larger than the first range when the car runs on a steel plate after the determination of the road gradient. The charge or discharge of a battery is determined by the first range as a standard when the vehicle runs uphill, and by the second range as a standard when a car runs on a steel plate.;COPYRIGHT KIPO 2013;[Reference numerals] (AA,BB,EE) No; (CC,DD,FF) Yes