Abstract: An apparatus for detecting overheating of a battery module includes a battery pack including a first battery module and a second battery module, a first temperature fuse arranged on the first battery module and having a first resistance value, a second temperature fuse arranged on the second battery module and having a second resistance value, and a controller that detects an overheated battery module based on a total resistance value of the first and second temperature fuses, which are connected in parallel to each other.

Abstract: An apparatus and a method for measuring an insulation resistance of a vehicle provided with a high voltage system including a battery and a plurality of high voltage electrical components operated by receiving power stored in the battery, includes a controller configured to determine a stray capacitance based on the high voltage electrical components electrically connected to the battery and to determine a measurement period for measuring the insulation resistance of the vehicle based on the determined stray capacitance.

Abstract: An apparatus for detecting overheating of a battery module includes a battery pack including a first battery module and a second battery module, a first temperature fuse arranged on the first battery module and having a first resistance value, a second temperature fuse arranged on the second battery module and having a second resistance value, and a controller that detects an overheated battery module based on a total resistance value of the first and second temperature fuses, which are connected in parallel to each other.

Abstract: A method of controlling a battery includes controlling a latching relay unit in response to vehicle state information, and converting a battery system of a vehicle into either a high-voltage battery system or a low-voltage battery system according to control of the latching relay unit.

Abstract: A power relay assembly (PRA) and a method of controlling the same are provided. The power relay assembly includes a first main relay for interconnecting negative voltages of a battery and an inverter, a second main relay for interconnecting positive voltages of the battery and the inverter, and a pre-charge relay connected in parallel to the second main relay. A controller executes the open or short sequence of the first main relay, the second main relay, and the pre-charge relay based on the opening and closing operation between the battery and the inverter or the charging and discharging operation of the battery. The opening and closing operation is divided into an opening operation and a closing operation between the battery and the inverter, and the charging and discharging operation is divided into a charging operation and a discharging operation of the battery.

Abstract: An apparatus and a method for detecting water flowing into a battery system is disclosed. The apparatus includes a detection circuit unit to output different voltage values based on a level of water flowing into the battery system, and a water inflow determining unit to measure a voltage value output from the detection circuit unit and to determine a water inflow state of the battery system based on the measured voltage value.

Abstract: An apparatus for detecting water includes at least one battery module for producing and supplying electricity to outside of the apparatus, a housing for accommodating the battery module, and a touch panel for detecting a contact position of water when the water makes contact with one surface of the touch panel, and the touch panel includes a first touch panel located in a first area where the battery module is formed.

Abstract: A method of controlling a battery includes controlling a latching relay unit in response to vehicle state information, and converting a battery system of a vehicle into either a high-voltage battery system or a low-voltage battery system according to control of the latching relay unit.

Abstract: A sensing circuit for battery cell voltage may include a first cell module including a plurality of battery cells; a first sensor sensing voltage of each battery cell of the first cell module; and a first isolation relay device including a plurality of relays, determining an electrical connection state between each battery cell of the first cell module and the first sensor by being connected thereto, and maintaining isolation between the first cell module and the first sensor.

Abstract: A vehicle battery system and a method of controlling charge of a battery in the system are provided. The system includes a first battery module that has a plurality of battery cells connected to each other in series and a second battery module that has a plurality of battery cells connected to each other in series. The second battery module is connected to the first battery module in series. A controller then monitors a state of charge of each of the first and second battery modules, such that when the state of charge of one of the first and second battery modules is less than a predetermined level, the controller performs active cell balancing between the battery cells of the first battery module and the battery cells of the second battery module.

Abstract: A battery management system of a vehicle is provided to prevent a lithium battery from being overcharged and over-discharged and to safely protect the lithium battery from various conditions degrading the lithium battery when the lithium battery is used as a low-voltage battery in the vehicle. The battery management system includes a relay that electrically connect and disconnects power supplied to a load from a battery and a reconnection switch that determines a connection state based on user manipulation and generates a signal for turning the relay on and off based on the connection state. Additionally, a controller turns the relay on and off based on the connection state of the reconnection switch.

Abstract: An apparatus for detecting water includes at least one battery module for producing and supplying electricity to outside of the apparatus, a housing for accommodating the battery module, and a touch panel for detecting a contact position of water when the water makes contact with one surface of the touch panel, and the touch panel includes a first touch panel located in a first area where the battery module is formed.

Abstract: A sensing circuit for battery cell voltage may include a first cell module including a plurality of battery cells; a first sensor sensing voltage of each battery cell of the first cell module; and a first isolation relay device including a plurality of relays, determining an electrical connection state between each battery cell of the first cell module and the first sensor by being connected thereto, and maintaining isolation between the first cell module and the first sensor.

Abstract: An apparatus and a method for detecting water flowing into a battery system is disclosed. The apparatus includes a detection circuit unit to output different voltage values based on a level of water flowing into the battery system, and a water inflow determining unit to measure a voltage value output from the detection circuit unit and to determine a water inflow state of the battery system based on the measured voltage value.

Abstract: A power relay assembly (PRA) and a method of controlling the same are provided. The power relay assembly includes a first main relay for interconnecting negative voltages of a battery and an inverter, a second main relay for interconnecting positive voltages of the battery and the inverter, and a pre-charge relay connected in parallel to the second main relay. A controller executes the open or short sequence of the first main relay, the second main relay, and the pre-charge relay based on the opening and closing operation between the battery and the inverter or the charging and discharging operation of the battery. The opening and closing operation is divided into an opening operation and a closing operation between the battery and the inverter, and the charging and discharging operation is divided into a charging operation and a discharging operation of the battery.

Abstract: A battery control system includes a main battery and an auxiliary battery, a direct current DC-DC converter for converting a high voltage output from the main battery into a low voltage between the main battery and the auxiliary battery and supplying the converted low voltage to the auxiliary battery or an electronic load, a relay for intermitting a voltage of the auxiliary battery, and a battery management system for controlling the relay to be turned off in a state in which the DC-DC converter is operated in a constantly ON state, comparing an output voltage of the DC-DC converter and a summation of cell voltages of the auxiliary battery, and detecting a fusion state of the relay according to a comparison result.

Abstract: A system for charging a vehicle battery includes a relay configured to establish/interrupt electrical connection between the vehicle battery and a vehicle system supplied with power from the vehicle battery, and a controller. The controller is configured to monitor a voltage of the battery, control the relay to interrupt the electrical connection when a voltage of the battery is less than or equal to a first predetermined reference value, and control the relay to establish the electrical connection when a predetermined condition is satisfied while the relay is electrically disconnected. The controller controls the relay to be electrically connected to charge the battery through an external power source while the electrical connection is interrupted, and then control a connection state of the relay based on the voltage of the battery, a voltage and current of the relay at a side of the vehicle system, and whether a vehicle is started.

Abstract: A battery management system for a vehicle is provided. The system is capable of preventing vehicle malfunction by preventing overcharge and over-discharge of a low-voltage battery by providing a controller that is configured to receive power transmitted from a first connection line and power transmitted from a second connection line. The battery management system includes a relay configured to electrically connect and disconnect power that is supplied from a battery to loads. The system also includes a controller configured to receive a first regular power transmitted through a connection line between the battery and the relay and a second regular power transmitted through a connection line between the relay and the loads. The controller is further configured to turn the relay on and off.

Abstract: An apparatus for preventing overcharge of a battery in an eco-vehicle includes: a detector detecting the overcharge of the battery; and a signal processor controlling a high voltage relay according to an output signal output from the detector to block a charge of the battery.

Abstract: A vehicle battery system and a method of controlling charge of a battery in the system are provided. The system includes a first battery module that has a plurality of battery cells connected to each other in series and a second battery module that has a plurality of battery cells connected to each other in series. The second battery module is connected to the first battery module in series. A controller then monitors a state of charge of each of the first and second battery modules, such that when the state of charge of one of the first and second battery modules is less than a predetermined level, the controller performs active cell balancing between the battery cells of the first battery module and the battery cells of the second battery module.