Abstract: An insulation resistance calculation apparatus according to an embodiment of the present disclosure includes a switching unit including a first switch and a second switch that are independently controlled, a first protective resistor and a first reference resistor connected in series between a positive electrode terminal of a battery and a ground when the first switch is turned on, a second protective resistor and a second reference resistor connected in series between a negative electrode terminal of the battery and the ground when the second switch is turned on, a voltage measuring unit configured to measure a first detection voltage applied to the first reference resistor and a second detection voltage applied to the second reference resistor, and a processor configured to determine if a measurement error occurred in measured values of the first detection voltage and measured values of the second detection voltage.

Abstract: An apparatus and a method of equalizing a battery module supplies an equalization current to a battery module which is diagnosed to have abnormality via an equalization current supply circuit when an abnormality is generated in a state of charge (SoC) of one or more battery modules, and equalize the SoC of the one or more battery modules.

Abstract: Disclosed are a wireless battery management system and a method for protecting a battery pack using the same. The battery pack includes a plurality of battery modules and at least one relay. The wireless battery management system includes a plurality of slave controllers electrically coupled to the plurality of battery modules one-to-one, and a master controller wirelessly coupled to each slave controller so as to be able to communicate with each slave controller. Each slave controller measures an operational parameter of the battery module electrically coupled thereto. Each slave controller wirelessly transmits a fault signal to the master controller when the measured operational parameter is outside of a predetermined normal range. The master controller turns off the at least one relay when the fault signal is received.

Abstract: Provided are a battery management system and a battery pack including the same. The battery management system includes a plurality of slave controllers, a plurality of temperature sensors, and a master controller. The plurality of temperature sensors are disposed in a plurality of different regions within the battery pack in a distributed fashion. The master controller is communicably coupled to the plurality of temperature sensors through a wired communication network. The master controller is communicably coupled to the plurality of slave controllers through a wireless communication network. The master controller determines a position of each of the plurality of slave controllers based on a temperature value of each region measured by the plurality of temperature sensors.

Abstract: A battery management system (BMS) recognition system, comprising: a master BMS including a master light emitter, the master BMS being configured to flicker the master light emitter to transmit an operation mode shifting signal to a slave BMS when it is intended to shift an operation mode of the slave BMS; and a slave BMS including a slave light receiver configured to correspond to the master light emitter, the slave BMS being configured to: recognize the flickering of the master light emitter through the slave light receiver; and shift the operation mode thereof in response to the operation mode shifting signal.

Abstract: An off-prevention circuit has a battery management system and a contactor multi-connected via a plurality of positive electrode terminals and a plurality of negative electrode terminals provided in each of the battery management system and the contactor. Even when any one connection among the connections of the plurality of positive electrode terminals and the plurality of negative electrode terminals is disconnected or opened, it is possible to maintain supply of power supplied from the battery management system to the contactor through another connection of the positive electrode terminal and the negative electrode terminal.

Abstract: A battery pack management device capable of reducing power consumption while transmitting and receiving data between a master BMS and a slave BMS by using a wireless communication method. The battery pack management device according to the present disclosure includes: a master BMS including an external communicator, an internal communicator, and a master controller and a slave BMS including a power supply, a state measurement sensor, a slave wireless communicator, and a slave controller.

Abstract: A battery pack management device capable of reducing power consumption while transmitting and receiving data between a master BMS and a slave BMS by using a wireless communication method. The battery pack management device according to the present disclosure includes: a master BMS including an external communicator, an internal communicator, and a master controller and a slave BMS including a power supply, a state measurement sensor, a slave wireless communicator, and a slave controller.

Abstract: The present disclosure relates to an apparatus and method for equalizing the charge of a plurality of battery modules while balancing the plurality of battery modules included in a battery pack. The present disclosure has an advantage of allowing easy manufacture of the battery pack with a reduced size since of the battery pack connectors may be simplified and the volume of wire harness may be reduced.

Abstract: A device and a method for equalizing and precharging a cell module, which may form a circuit for performing a corresponding operation by a converter unit by selectively connecting the converter unit and one or more cell modules by controlling a conduction state of a switching unit based on an operation which the converter intends to perform.

Abstract: An apparatus and a method for measuring insulation resistance of a battery pack using an insulation resistance meter (IRM) circuit where only a negative relay is electrically conducted, thereby decreasing a risk of electric shock when insulation resistance is measured in a state where an external insulation resistor of the battery pack is broken.

Abstract: The present invention relates to a current measurement apparatus using a shunt resistor, and a current measurement apparatus using a shunt resistor, in which two or more busbar-type components, to which one shunt resistor is applied, in the related art are integrated into one busbar module, and a voltage of a battery module is measured through the plurality of shunt resistors included in the one integrated busbar module, thereby decreasing volumes and price of the battery module and a battery pack, and the plurality of shunt resistors is measured through the plurality of measuring units, respectively, thereby measuring a reliable voltage value.

Abstract: The present invention relates to a system and a method of remotely managing a battery for a vehicle, in which electromagnetic waves emitted from a vehicle adjacent to a vehicle for management are rectified and are usable as operation power for monitoring a state of the battery of the vehicle for management, and a passive radio frequency identification (RFID) reader module installed in the vehicle adjacent to the vehicle for management obtains the state of the battery of the vehicle for management and then provides a terminal of an owner of the vehicle for management with the obtained state of the battery, thereby enabling the owner of the vehicle for management located at a remote place to recognize a charging/discharging state of the battery of his/her vehicle and the like in real time.

Abstract: A system and a method in which a contactor coil control unit, which applies an operation signal to a contactor coil (relay coil) that opens or connects contact points of a contactor (Relay), during a travelling of a vehicle applies an abnormal signal to the contactor coil by an external reason or a failure, the abnormal signal is detected in real time, so that it is possible to prevent the contact point of the contactor from being unintentionally opened by the abnormal signal, and it is possible to prevent an operating vehicle from being suddenly stopped by determining whether the vehicle actually travels based on a maintenance time of the abnormal signal and whether the abnormal signal is applied due to an actual failure of the contactor coil control unit.

Abstract: The overvoltage protection circuit according to an embodiment of the present invention includes: a voltage measurement unit for measuring the voltage of a battery; a power control unit that supplies power if the battery voltage value measured in the voltage measurement unit is equal to or greater than a first predetermined voltage value; and a cut-off circuit unit that receives power supplied from the power control unit and cuts off the charge of the battery if the voltage value of the battery is equal to or greater than a second predetermined voltage value that is higher than the first voltage value.

Abstract: Provided is a wireless battery control system, a method and a battery pack. The system includes a master, and a plurality of slaves sequentially positioned at different distances from the master. The master wirelessly transmit a preparation signal when entering an ID assignment mode. Each slave wirelessly transmits Received Signal Strength Indicator (RSSI) of the preparation signal to the master when wirelessly receiving the preparation signal from the master or other slave during operation in a standby mode. The master wirelessly transmits an ID associated with the operation count to a slave having wirelessly transmitted a maximum RSSI among the RSSIs of the preparation signal, and increases the operation count by 1.

Abstract: The present invention relates to a system and a method of preventing a contactor from being abnormally opened through a real-time detection of an operation, in which a contactor coil control unit, which applies an operation signal to a contactor coil (relay coil) that opens or connects contact points of a contactor (Relay), during a travelling of a vehicle applies an abnormal signal to the contactor coil by an external reason or a failure, the abnormal signal is detected in real time, so that it is possible to prevent the contact point of the contactor from being unintentionally opened by the abnormal signal, and particularly, it is possible to prevent an operating vehicle from being suddenly stopped by determining whether the vehicle actually travels based on a maintenance time of the abnormal signal and whether the abnormal signal is applied due to an actual failure of the contactor coil control unit.

Abstract: The present invention relates to a system and a method of remotely managing a battery for a vehicle, in which electromagnetic waves emitted from a vehicle adjacent to a vehicle for management are rectified and are usable as operation power for monitoring a state of the battery of the vehicle for management, and a passive radio frequency identification (RFID) reader module installed in the vehicle adjacent to the vehicle for management obtains the state of the battery of the vehicle for management and then provides a terminal of an owner of the vehicle for management with the obtained state of the battery, thereby enabling the owner of the vehicle for management located at a remote place to recognize a charging/discharging state of the battery of his/her vehicle and the like in real time.

Abstract: Disclosed are a wireless battery management system and a method for protecting a battery pack using the same. The battery pack includes a plurality of battery modules and at least one relay. The wireless battery management system includes a plurality of slave controllers electrically coupled to the plurality of battery modules one-to-one, and a master controller wirelessly coupled to each slave controller so as to be able to communicate with each slave controller. Each slave controller measures an operational parameter of the battery module electrically coupled thereto. Each slave controller wirelessly transmits a fault signal to the master controller when the measured operational parameter is outside of a predetermined normal range. The master controller turns off the at least one relay when the fault signal is received.

Abstract: A system of predicting a failure rate of a contactor before the generation of a failure by counting a lifespan index of the contactor based on normality of through-currents of a primary side and a secondary side of the contactor, and determining that a failure rate of the contactor increases when a count value for an abnormal through-current exceeds a predetermined threshold value.