Abstract: Disclosed are an apparatus and method for managing a battery. The apparatus includes a battery, a voltage sensor that measures a voltage of the battery, and a processor. The processor determines an abnormal state of the battery during a first diagnosis period, determines a diagnostic profile corresponding to a type of the abnormal state of the battery based on the detected abnormal state of the battery in the first diagnosis, controls a diagnostic condition of the battery based on the diagnostic profile, and re-diagnoses an abnormal state of the battery during a second diagnosis period while the diagnostic condition is controlled based on the diagnostic profile.

Abstract: Disclosed are an apparatus for diagnosing a state of a battery and a method thereof. The apparatus diagnoses the state of the battery with high accuracy in a short time period by obtaining first state information of the battery from a battery management system (BMS), obtaining second state information of the battery from electrochemical impedance spectroscopy (EIS) equipment, obtaining third state information of the battery from a history management server, and diagnosing the state of the battery based on the first state information, the second state information and the third state information.

Abstract: An apparatus for measuring a battery cell temperature includes a memory that stores a program instruction, a processor that executes the program instruction, and a plurality of first temperature sensors that detects whether temperatures of all or some of a plurality of battery cells exceed a threshold temperature. The first temperature sensor may correspond to an individual battery cell included in all or some of the plurality of battery cells in an N:1 relationship, where N may be a natural number greater than or equal to 1 and represent a number of the first temperature sensor, and 1 represents a number of individual batteries. The processor may collect data related to the temperatures of all or some of the plurality of battery cells based on detecting whether a temperature of the individual battery cell exceeds the threshold temperature through at least one of the plurality of first temperature sensors.

Abstract: An apparatus for managing a battery includes a voltage sensor that measures a voltage of a battery cell mounted on a vehicle, and a processor that determines a short circuit risk of the battery cell.

Abstract: A battery management apparatus includes a control circuit configured to determine an internal resistance value for each of one or more battery cells included in a battery pack by using a current change amount of the battery pack and a voltage change amount of the one or more battery cells, and diagnose defects in the one or more battery cells by using internal resistance values of the one or more battery cells, in response to charging the battery pack, where the control circuit is configured to determine the current change amount of the battery pack and the voltage change amount of the one or more battery cells based on a current change request time point requiring a charging current change based on a voltage of the battery pack reaching a predetermined voltage during the charge of the battery pack.

Abstract: In a battery management apparatus, a system, and a method therefor, the battery management apparatus includes a communication device configured to communicate with one or more in-vehicle controllers; a voltage sensor configured for measuring a voltage value of one or more battery cells in a battery pack; a control circuit to diagnose a defect in the battery pack by use of the voltage value of the one or more battery cells measured by the voltage sensor, a battery pack voltage value across the battery pack measured by the one or more in-vehicle controllers, and a current value flowing through the battery pack; and a storage configured to store data and algorithms driven by the control circuit.

Abstract: In an apparatus for correcting a voltage of a battery cell and a method thereof. The apparatus includes a voltage sensor configured for measuring voltages of a plurality of battery cells, and a controller which is configured for determining an amount of voltage change of each battery cell corresponding to a preset discharge current, detects target battery cells whose identification numbers have preset intervals while the amount of voltage change does not exceed a threshold value, and corrects the amount of voltage change of each target battery cell.

Abstract: A battery management apparatus includes a voltage sensor configured to measure a voltage of one or more battery cells, a control circuit configured to diagnose a defect in the one or more battery cells by determining a voltage change amount of the one or more battery cells using the voltage of the one or more battery cells measured by the voltage sensor, and a storage configured to store data and algorithms driven by the control circuit. The control circuit is configured to obtain a voltage for each battery cell by sequentially measuring the one or more battery cells, and to perform first voltage measurement on the one or more battery cells in a forward chronological order and to perform second voltage measurement on the one or more battery cells in a reverse chronological order.

Abstract: An apparatus for diagnosing abnormality of a battery cell group and a method for the same are provided. The apparatus includes a voltage sensor to measure a voltage value with respect to each battery cell group including a plurality of battery cells connected to each other in parallel, and a controller to determine an accumulated voltage value for an effective time with respect to each battery cell group, determine a representative value for each battery cell group by removing an offset from each accumulated voltage value, and detect a battery cell group having abnormality, based on an average value and a standard deviation of representative values.

Abstract: An apparatus for monitoring a battery of a vehicle includes one or more sensors and a processor, wherein the one or more sensors may obtain a first voltage during a stabilization time of the battery, obtain a minimum voltage measured from a time point when the stabilization time ends to a time point when parking of the vehicle ends as a second voltage of the battery, and detect a temperature of the battery from a time point when the first voltage is obtained to a time point when the second voltage is obtained, and the processor may determine a first discharge amount based on the first voltage and the second voltage, determine a second discharge amount consumed in balancing the battery and operating the one or more sensors, determine a first self-discharge amount and a second self-discharge amount based on the first discharge amount, the second discharge amount, and the temperature, and determine whether a short circuit has occurred in the battery based on the first self-discharge amount and the second self-di

Abstract: An apparatus for detecting soft shorts of a battery cell and a method for the same are provided. The apparatus includes a sensor to measure voltages of a plurality of battery cells, and a controller to determine a slope of a voltage of each battery cell, the deviation of the slope of the voltage for each battery cell, and detect a battery cell, which has the soft shorts, of the plurality of battery cells, based on the slope and the deviation.

Abstract: Provided is a system for seamless power conversion in DC power distribution, the system including power conversion devices connected in parallel, and performing conversion from a AC voltage to a DC voltage between an AC power distribution network and a DC power distribution network, wherein a master power conversion device among the power conversion devices converts the AC voltage supplied from the AC power distribution network into the DC voltage including an AC voltage at a preset level, and supplies the DC voltage to a DC power distribution line of the DC power distribution network, and the remaining power conversion devices that are slave power conversion devices detect the DC voltage at the DC power distribution line in real time, and when the AC voltage is not sensed from the detected DC voltage, one of the slave power conversion devices is converted into a master power conversion device.

Abstract: Provided is a system for seamless power conversion in DC power distribution, the system including power conversion devices connected in parallel, and performing conversion from a AC voltage to a DC voltage between an AC power distribution network and a DC power distribution network, wherein a master power conversion device among the power conversion devices converts the AC voltage supplied from the AC power distribution network into the DC voltage including an AC voltage at a preset level, and supplies the DC voltage to a DC power distribution line of the DC power distribution network, and the remaining power conversion devices that are slave power conversion devices detect the DC voltage at the DC power distribution line in real time, and when the AC voltage is not sensed from the detected DC voltage, one of the slave power conversion devices is converted into a master power conversion device.

Abstract: The present invention relates to a power supply apparatus and, more particularly, to a power supply apparatus for sub-modules of a MMC (Modular Multilevel Converter), the apparatus stably supplying power to the sub-modules of the MMC connected to an HVDC (High Voltage Direct Current) system.

Abstract: Provided is a power supply apparatus for sub-modules of a Modular Multilevel Converter (MMC) which stably supplies power to the sub-modules of the MMC in connection with an HVDC system. The power supply apparatus for sub-modules of an MMC can include a charging unit in which an input voltage between P and N busses of the MMC is stored, a relay unit connected in parallel with the charging unit, a resistor connected in series with the relay unit, a TVS diode connected in series with the resistor, a Zener diode connected in series with the TVS diode, a transformer for delivering the input voltage (in a primary winding) to a secondary winding thereof, and a switch for switching the flow of current supplied to the transformer.

Abstract: The present invention relates to a power supply apparatus and, more particularly, to a power supply apparatus for sub-modules of a MMC (Modular Multilevel Converter), the apparatus stably supplying power to the sub-modules of the MMC connected to an HVDC (High Voltage Direct Current) system.

Abstract: Provided is a power supply apparatus for sub-modules of a Modular Multilevel Converter (MMC) which stably supplies power to the sub-modules of the MMC in connection with an HVDC system. The power supply apparatus for sub-modules of an MMC can include a charging unit in which an input voltage between P and N busses of the MMC is stored, a relay unit connected in parallel with the charging unit, a resistor connected in series with the relay unit, a TVS diode connected in series with the resistor, a Zener diode connected in series with the TVS diode, a transformer for delivering the input voltage (in a primary winding) to a secondary winding thereof, and a switch for switching the flow of current supplied to the transformer.