Abstract: A vehicle charging control method is provided. The method includes recognizing scheduled charging information predetermined for vehicle charging and detecting charging equipment connected to the vehicle. Whether a scheduled charging is performed is determined based at least on whether charging information from the charging equipment corresponds to the scheduled charging information. Whether an automatic charging is performed is determined based at least on predetermined user set-up information when the charging information deviates from the scheduled charging information. A charging operation, including the scheduled charging and the automatic charging is then performed for the vehicle.

Abstract: a control method for charging a high voltage battery of a vehicle includes charging, by a vehicle controller, the high voltage battery using a low voltage DC-DC converter The state information. of the low voltage DC-DC converter, which includes the current and the temperature of the low voltage DC-DC converter, is sensed by the vehicle controller while charging the high voltage battery. The charging current of the high voltage battery is derated by the vehicle controller when the sensed state information of the low voltage DC-DC converter satisfies a converter derating condition.

Abstract: The battery jump-starting method includes determining whether a vehicle is available for jump-start, turning off a switch controlling a relay when the vehicle is available for jump-start, and temporarily driving the vehicle in a state in which the switch is maintained in an OFF state when the vehicle is started. The battery jump-starting method enables a vehicle to temporarily drive when starting in a situation in which it is not possible to replace or charge a battery, upon determining whether the vehicle is available for jump-start.

Abstract: A vehicle power supply system is provided. The system includes a main battery and an OBC having first and second input/output terminals, in which AC power input to the first input/output terminal is converted into DC power to be output to the second input/output terminal, and a magnitude of the DC power input to the second input/output terminal is converted and output to the first input/output terminal. Additionally, the system includes an LDC in which a DC voltage input from the main battery is converted into a low voltage to be supplied to an auxiliary battery or an electronic load and a switching unit is connected between the first input/output terminal and the LDC. A controller is then configured to adjust a powering direction of the OBC and an on/off state of the switching unit, based on whether the main battery is charged and whether the LDC fails.

Abstract: A system for determining a regenerative braking mode (regen mode) of a LDC to determine an entrance into the regen mode or a release from the regen mode among driving modes of the LDC includes a vehicle speed calculating device that detects a driving speed of a vehicle and outputs information on the detected driving speed, an inclination sensing device that detects an inclination of a road on which the vehicle is driving and outputs information on the detected inclination, and a processor that determines the entrance into the regen mode and the release from the regen mode, based on the driving speed of the vehicle and the inclination of the road at a time point that a high-voltage battery is fully charged.

Abstract: An apparatus and method for controlling an LDC of a hybrid vehicle are provided. The apparatus includes a determining controller that receives state information of an auxiliary battery, while the LDC is being operated in a first mode based on a detected voltage, and that determines whether an entry condition for a second mode based on a current is satisfied. An arithmetic controller calculates a charging current compensation value of the auxiliary battery when the entry condition for the second mode is satisfied and a mode controller enters the second mode and that controls the LDC based on the charging current compensation value of the auxiliary battery when the entry condition for the second mode is satisfied.

Abstract: A method for controlling a relay of an auxiliary battery by a controller includes deciding whether or not a low direct current (DC) to DC converter (LDC) supplies power required in an electronic load in a state of charge (SOC) maintaining mode of the auxiliary battery. As a result of the decision, a turn-on state of the relay in which power of the auxiliary battery is supplied to the electronic load is maintained when the LDC does not supply the power required in the electronic load. As a result of the decision, the relay is turned off so that power of the auxiliary battery is not supplied to the electronic load when the LDC supplies the power required in the electronic load.

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 vehicle charging control method is provided. The method includes recognizing scheduled charging information predetermined for vehicle charging and detecting charging equipment connected to the vehicle. Whether a scheduled charging is performed is determined based at least on whether charging information from the charging equipment corresponds to the scheduled charging information. Whether an automatic charging is performed is determined based at least on predetermined user set-up information when the charging information deviates from the scheduled charging information. A charging operation, including the scheduled charging and the automatic charging is then performed for the vehicle.

Abstract: A charging control method and system for an electric vehicle are provided. The charging control method includes monitoring, by a controller, a state of an auxiliary battery including a state of charge (SOC), temperature, and charging current of the auxiliary battery. A charging mode of the electric vehicle is then determined based on the monitored state of the auxiliary battery. A charging voltage of the auxiliary battery is set based on the monitored SOC and temperature of the auxiliary battery and then the auxiliary battery is charged with the set charging voltage.

Abstract: A method and system for controlling a battery SOC of a hybrid vehicle are provided to improve fuel efficiency in an urban area with a differentiated strategy for controlling auxiliary battery SOC balance of the hybrid vehicle. The method improves fuel efficiency in urban areas with a differentiated strategy of controlling SOC balance of an auxiliary battery considering that the degree of influence of electric field load consumption on fuel efficiency based on LDC voltage adjustment in the hybrid vehicle varies based on driving mode and road gradient.

Abstract: An apparatus and a method are provided for controlling a low DC-DC converter (LDC) in an electric vehicle by prioritizing respective controllers, connecting the controllers in series in ascending order according to priority, and determining a command voltage of the LDC on the basis of output voltages of the respective controllers. Accordingly, even when a controller with a highest priority is operating, controllers of lower priority continue operating. Thus, electrical load performance degradation caused by instantaneous overcurrent generated in state transitions is prevented.

Abstract: A vehicle power supply system is provided. The system includes a main battery and an OBC having first and second input/output terminals, in which AC power input to the first input/output terminal is converted into DC power to be output to the second input/output terminal, and a magnitude of the DC power input to the second input/output terminal is converted and output to the first input/output terminal Additionally, the system includes an LDC in which a DC voltage input from the main battery is converted into a low voltage to be supplied to an auxiliary battery or an electronic load and a switching unit is connected between the first input/output terminal and the LDC. A controller is then configured to adjust a powering direction of the OBC and an on/off state of the switching unit, based on whether the main battery is charged and whether the LDC fails.

Abstract: A method of controlling a low-voltage DC-DC converter for a hybrid vehicle is provided. The method includes determining whether an intelligent battery system fails and analyzing a failure cause of the intelligent battery system when the intelligent battery system is determined to fail. A first voltage is deduced using a battery temperature when the failure cause is determined to be a detection failure of battery SOC and an output voltage of a low-voltage DC-DC converter is adjusted to be the first voltage.

Abstract: A method of efficiently recharging a supplementary battery of a vehicle can recharge the supplementary battery with power from a main battery. A method of controlling a supplementary battery recharging system includes: acquiring charged current of a supplementary battery; starting a timer when the charged current exceeds a limit range; updating a current limit on the basis of a timer value and temperature information of the supplementary battery; and controlling a target voltage using the updated current limit.

Abstract: A vehicle power control method for jump-start uses a vehicle control system that includes a low voltage DC/DC converter for converting a voltage of a high voltage battery to a low voltage to be output and a junction box for connecting the low voltage DC/DC converter to an auxiliary battery and load. The vehicle power control method includes a jump-start preparation step in which when the auxiliary battery is in a discharge condition, a first relay, which connects or disconnects the junction box to or from the auxiliary battery, is turned off and a second relay, which connects or disconnects the junction box to or from a jump-start power supply connection terminal, is turned on; and a jump-start completion step in which, after a vehicle starts by a power inputted through the jump-start power supply connection terminal, the second relay is turned off, and the first relay is turned on.

Abstract: a control method for charging a high voltage battery of a vehicle includes charging, by a vehicle controller, the high voltage battery using a low voltage DC-DC converter The state information. of the low voltage DC-DC converter, which includes the current and the temperature of the low voltage DC-DC converter, is sensed by the vehicle controller while charging the high voltage battery. The charging current of the high voltage battery is derated by the vehicle controller when the sensed state information of the low voltage DC-DC converter satisfies a converter derating condition.

Abstract: The battery jump-starting method includes determining whether a vehicle is available for jump-start, turning off a switch controlling a relay when the vehicle is available for jump-start, and temporarily driving the vehicle in a state in which the switch is maintained in an OFF state when the vehicle is started. The battery jump-starting method enables a vehicle to temporarily drive when starting in a situation in which it is not possible to replace or charge a battery, upon determining whether the vehicle is available for jump-start.

Abstract: An apparatus and a method for detecting a relay fusion of an eco-friendly vehicle are provided. The apparatus and method detect whether a relay for preventing an over-discharge of a lithium ion battery of 12V is fused, by ascertaining a voltage change of the lithium ion battery of 12V based on a variation of an output voltage of a low direct current (DC)-DC converter (LDC).

Abstract: A method and system for controlling a battery SOC of a hybrid vehicle are provided to improve fuel efficiency in an urban area with a differentiated strategy for controlling auxiliary battery SOC balance of the hybrid vehicle. The method improves fuel efficiency in urban areas with a differentiated strategy of controlling SOC balance of an auxiliary battery considering that the degree of influence of electric field load consumption on fuel efficiency based on LDC voltage adjustment in the hybrid vehicle varies based on driving mode and road gradient.