Abstract: A system and method for more accurately measuring an internal resistance of a battery for a vehicle are provided. The method includes measuring, by a controller, current-voltage pairs for the battery and calculating a correlation between current and voltage in the measured current-voltage pairs. In addition, the internal resistance of the battery is measured using the current-voltage pairs having the correlation equal to or greater than a preset threshold.

Abstract: A system and method for detecting a fusion of a relay of a battery is provided. The method includes detecting the fusion of the relay during disengagement of an ignition of a vehicle and determining the fusion status of the relay during engagement of the ignition of the vehicle. The method includes adjusting a first relay to an off position, after disengaging an ignition, and determining whether the fusion status of first relay based on measuring a voltage of an interval between the adjusting the first relay to an off position and adjusting a second relay to an off position. Then the second relay may be adjusted to the off position.

Abstract: Provided are apparatuses and methods for diagnosing failure of a current sensor of a battery system for an eco-friendly vehicle. One apparatus for diagnosing failure of a current sensor of a battery system for an eco-friendly vehicle includes a high voltage battery, a current sensor configured to measure a current output from the high voltage battery, and a controller configured to measure an offset current through the current sensor when an ignition key is turned off or turned on, and diagnose failure of the current sensor on the basis of the measured offset current.

Abstract: A system and method for more accurately measuring an internal resistance of a battery for a vehicle are provided. The method includes measuring, by a controller, current-voltage pairs for the battery and calculating a correlation between current and voltage in the measured current-voltage pairs. In addition, the internal resistance of the battery is measured using the current-voltage pairs having the correlation equal to or greater than a preset threshold.

Abstract: The prevent invention provides a device and a method for calculating a distance to empty of an electric vehicle which can reduce an initial error in estimating a distance to empty of an electric vehicle. The device and the method for calculating a distance to empty of an electric vehicle can provide more accurate DTE information from the start to the end of traveling by reducing the earlier error, in estimating the DTE from the amount of the presently remaining fuel (the amount of remaining capacity of a battery) of the electric vehicle.

Abstract: Disclosed is a cooling control system and method for battery packs located in different locations in a vehicle. In particular, a controller determines whether the maximum temperatures of a plurality of battery packs disposed in different locations are within the reference maximum temperature and whether the temperature differences of battery cells in each of the battery packs is within the reference temperature difference value. When the maximum temperature is less than or equal to the reference maximum temperature and the temperature difference between battery cells in each of the battery packs is within the reference temperature difference value, the controller determines whether the temperature differences in all the battery packs are within the reference temperature difference value. Then when each of the temperature differences in all the battery packs are over the reference temperature difference value, an output of a cooling unit provided to cool that battery pack is changed.

Abstract: The present invention provides a technique for estimating a remaining capacity of a battery. In particular, the technique measures a current value, a voltage value and temperature of the battery and corrects the current value based on the voltage value. The corrected current value is then integrated and the result is used to calculate a current integration capacity by reflecting a charge/discharge efficiency accordingly. A battery forward voltage capacity is then determined from the measured current value, voltage value and temperature, and used to determine whether it is necessary to correct the current integration capacity. The current integration capacity is then converted into a remaining capacity, if it is determined that a correction is not necessary. If it is determined that a correction is necessary, the current integration capacity is corrected and then the corrected current integration capacity is converted into a remaining capacity.

Abstract: The present invention provides a method for estimating a distance to empty (DTE) from the present amount of remaining fuel (the amount of remaining electricity) in an electric vehicle. In particular, the present invention provides a method for estimating a remaining travel distance of an electric vehicle, which can efficiently and accurately estimate a remaining travel distance by setting the relationship of a DTE with a state of charge (SOC) of a battery which changes in real time under various load conditions, in consideration of the present travel pattern, in addition to the SOC of a battery and accumulated fuel efficiency for the amount of remaining fuel of the electric vehicle.

Abstract: A telematics device for an electric vehicle and a remote air-conditioning control method thereof are provided. A vehicle driver remote adjusts an indoor temperature of the electric vehicle by driving an air-conditioning unit of the vehicle during the battery charging, so that a travelable distance based on the battery life can be maximized.

Abstract: Disclosed is a technique for detecting a relay fusion in a battery system. In particular, the disclosed technique protects the battery system by being able to determine whether all of the relays in the battery system are fused without any omission. In particular, the disclosed technique alternates between two processes to ensure all relays are operating correctly.

Abstract: The present invention provides a method for estimating a distance to empty (DTE) from the present amount of remaining fuel (the amount of remaining electricity) in an electric vehicle. In particular, the present invention provides a method for estimating a remaining travel distance of an electric vehicle, which can efficiently and accurately estimate a remaining travel distance by setting the relationship of a DTE with a state of charge (SOC) of a battery which changes in real time under various load conditions, in consideration of the present travel pattern, in addition to the SOC of a battery and accumulated fuel efficiency for the amount of remaining fuel of the electric vehicle.

Abstract: The prevent invention provides a device and a method for calculating a distance to empty of an electric vehicle which can reduce an initial error in estimating a distance to empty of an electric vehicle. The device and the method for calculating a distance to empty of an electric vehicle can provide more accurate DTE information from the start to the end of traveling by reducing the earlier error, in estimating the DTE from the amount of the presently remaining fuel (the amount of remaining capacity of a battery) of the electric vehicle.

Abstract: A telematics device for an electric vehicle and a remote air-conditioning control method thereof are provided. A vehicle driver remote adjusts an indoor temperature of the electric vehicle by driving an air-conditioning unit of the vehicle during the battery charging, so that a travelable distance based on the battery life can be maximized.

Abstract: The present invention provides a method for estimating a remaining capacity of a battery. The method comprises: measuring a current value, a voltage value and temperature of the battery; correcting the current value based on the voltage value; calculating a current integration value by integrating the corrected current value and calculating a current integration capacity from the calculated current integration value by reflecting a charge/discharge efficiency; determining a battery forward voltage capacity from the measured current value, voltage value and temperature, and determining whether it is necessary to correct the current integration capacity based on the forward voltage capacity; converting the current integration capacity into a remaining capacity, if it is determined that it is not necessary to correct; and correcting, if it is determined that it is necessary to correct, the current integration capacity and converting the corrected current integration capacity into a remaining capacity.