Abstract: A vehicle includes a battery, a converter electrically connected to the battery and configured to provide electrical power of the battery to an external load, a navigation device configured to obtain current location information and charging place information, and a controller operatively connected to the battery and the converter, and configured to control the battery and the converter, wherein the controller is further configured to determine a required energy of the vehicle to travel from a current location of the vehicle to a nearest charging place after end of driving and parking of the vehicle, determine a safety state of charge (SOC) value of the battery for ensuring driving of the vehicle to the nearest charging place based on the required energy and a total capacity of the battery, and control the converter to cut off supplying of the power to the external load in response to an SOC of the battery reaches the safety SOC.

Abstract: An apparatus and a method for diagnosing battery replacement for vehicles may accurately diagnose whether a battery has been replaced using an internal resistance of the battery. The apparatus includes a measurer for measuring the internal resistance of the battery, a storage for storing the measured internal resistance, and a controller for diagnosing whether the battery has been replaced based on the internal resistance. The controller, when vehicle power is reset, controls the measurer to measure a first or second internal resistance after starting a vehicle, updates and stores the measured first or second internal resistance in the storage, compares a current first internal resistance value with a former first internal resistance value or a current second internal resistance value with a former second internal resistance value, and diagnoses that the battery has been replaced when the corresponding values differ from each other.

Abstract: A system for managing a battery of a vehicle includes a first controller configured to control a power-on (IG ON) state and a power-off (IG OFF) state of a plurality of controllers in the vehicle and to be periodically woken up in the power-off (IG OFF) state to wake up at least some of the plurality of controllers, and a second controller configured to turn off a main relay connecting a first battery in the vehicle and a vehicle system when the power-off (IG OFF) state begins, to monitor a state of the first battery storing energy for generating power of the vehicle by maintaining power during a preset first reference time, to be woken up at a wake-up period of the first controller when the first reference time elapses, and to monitor the state of the first battery.

Abstract: A system for managing a battery of a vehicle includes a first controller configured to control a power-on (IG ON) state and a power-off (IG OFF) state of a plurality of controllers in the vehicle and to be periodically woken up in the power-off (IG OFF) state to wake up at least some of the plurality of controllers, and a second controller configured to turn off a main relay connecting a first battery in the vehicle and a vehicle system when the power-off (IG OFF) state begins, to monitor a state of the first battery storing energy for generating power of the vehicle by maintaining power during a preset first reference time, to be woken up at a wake-up period of the first controller when the first reference time elapses, and to monitor the state of the first battery.

Abstract: An apparatus and a method for diagnosing battery replacement for vehicles may accurately diagnose whether a battery has been replaced using an internal resistance of the battery. The apparatus includes a measurer for measuring the internal resistance of the battery, a storage for storing the measured internal resistance, and a controller for diagnosing whether the battery has been replaced based on the internal resistance. The controller, when vehicle power is reset, controls the measurer to measure a first or second internal resistance after starting a vehicle, updates and stores the measured first or second internal resistance in the storage, compares a current first internal resistance value with a former first internal resistance value or a current second internal resistance value with a former second internal resistance value, and diagnoses that the battery has been replaced when the corresponding values differ from each other.

Abstract: A vehicle and a method use an Idle Stop and Go (ISG) system. The vehicle includes: a battery; a battery sensor configured to measure a lowest voltage of the battery at a time of startup of the vehicle; a driving unit including an engine of the vehicle; and a controller.

Abstract: A learning algorithm for controlling a battery voltage, which reduces an error of the battery voltage by using a power generation voltage of an alternator while a vehicle is driven includes steps of: calculating, by a processor, a first error voltage indicating a difference between the power generation voltage of the alternator and the battery voltage after the vehicle has been assembled; calculating, by the processor, a second error voltage indicated by updating the difference between the power generation voltage of the alternator and the battery voltage according to an output amount of the alternator and a driving time; and calculating, by the processor, a line-to-line voltage between the alternator and the battery by adding the first error voltage and the second error voltage. This learning algorithm is advantageous since there is no side effect in voltage control such as open-loop control and there is a low voltage control error.

Abstract: A battery management method can be used for a vehicle. The method includes determining whether battery refresh proceeds and determining whether battery aging proceeds based on a time period in which the battery refresh proceeds, a battery state of charge, and a battery current during the battery refresh. Battery discharge is controlled based on determining that the battery aging proceeds. Charging is controlled according to a battery refresh map in order to restore the battery.

Abstract: A learning algorithm for controlling a battery voltage, which reduces an error of the battery voltage by using a power generation voltage of an alternator while a vehicle is driven includes steps of: calculating, by a processor, a first error voltage indicating a difference between the power generation voltage of the alternator and the battery voltage after the vehicle has been assembled; calculating, by the processor, a second error voltage indicated by updating the difference between the power generation voltage of the alternator and the battery voltage according to an output amount of the alternator and a driving time; and calculating, by the processor, a line-to-line voltage between the alternator and the battery by adding the first error voltage and the second error voltage. This learning algorithm is advantageous since there is no side effect in voltage control such as open-loop control and there is a low voltage control error.

Abstract: A battery management method can be used for a vehicle. The method includes determining whether battery refresh proceeds and determining whether battery aging proceeds based on a time period in which the battery refresh proceeds, a battery state of charge, and a battery current during the battery refresh. Battery discharge is controlled based on determining that the battery aging proceeds. Charging is controlled according to a battery refresh map in order to restore the battery.