Abstract: Disclosed is a battery management apparatus capable of effectively reducing the current consumption of a component for waking up a microcontroller unit. The battery management apparatus includes a wake-up unit, a first power supply path, a first regulator, a first switching element, a feedback module, and a microcontroller unit configured to convert a sleep mode to a wake-up mode by receiving a wake-up signal from the wake-up unit and connected to the feedback module to turn off the first switching element.

Abstract: A battery diagnosing apparatus includes a resistance measuring unit to measure an internal resistance of each of battery modules including one or more battery cells, and a control unit to receive resistance information about the internal resistance of each of the battery modules from the resistance measuring unit. The control unit sets a first resistance section that includes the internal resistance of each of the battery modules. The control unit sets a second resistance section that includes the internal resistance of some of the battery modules that belongs to the first resistance section but having the internal resistance less than a predetermined amount than those included in the first resistance section, and diagnoses a state of a battery module of which the internal resistance belongs to both the first resistance section and the second resistance section as a normal state among the battery modules.

Abstract: A cell balancing method is capable of increasing cell balancing efficiency by variably controlling a cell balancing switching pulse-width modulation (PWM) duty ratio depending on a cell balancing current, a battery management system (BMS temperature, and an operating mode. Further, a battery pack using the same cell balancing method is provided.

Abstract: Disclosed is a battery management apparatus capable of effectively reducing the current consumption of a component for waking up a microcontroller unit. The battery management apparatus includes a wake-up unit, a first power supply path, a first regulator, a first switching element, a feedback module, and a microcontroller unit configured to convert a sleep mode to a wake-up mode by receiving a wake-up signal from the wake-up unit and connected to the feedback module to turn off the first switching element.

Abstract: Discussed is a battery diagnosing apparatus that can include a resistance measuring unit configured to measure an internal resistance of each of a plurality of battery modules including one or more battery cells, and a control unit configured to receive resistance information about the internal resistance of each of the plurality of battery modules from the resistance measuring unit, calculate a first criterion resistance and an absolute deviation between the first criterion resistance and the internal resistance, convert the calculated absolute deviation into a resistance deviation for the plurality of battery modules based on the resistance information, set a first resistance section based on the calculated first criterion resistance and the calculated resistance deviation, select a part of the plurality of battery modules as a target module based on the resistance information, and calculate a second criterion resistance for the target module based on the resistance information.

Abstract: A battery management system according to the present disclosure is for a battery connected in parallel to a smoothing capacitor through a high side power line and a low side power line. The battery management system includes a discharge control switch connected between a first node and a second node of the low side power line, a temperature sensing circuit including a thermistor, wherein a first terminal of the thermistor is connected to the first node, a precharge switch connected to a precharge power line between a second terminal of the thermistor to the second node, and a control unit. The control unit is configured to turn off the discharge control switch and turn on the precharge switch, for precharging of the smoothing capacitor, when the control unit receives a key-on signal.

Abstract: A battery pack includes a plurality of battery modules; and a pack case configured to house the plurality of battery modules, the pack case including a first plate covering one surface of the plurality of battery modules and a second plate covering the other surface of the plurality of battery modules. A first gasket is along an edge of the first plate, and a second gasket is along an edge of the second plate. The first gasket and the second gasket overlap each other in a region where one edge of each of the first plate and the second plate contact each other.

Abstract: A battery pack includes a plurality of battery modules; a case cover covering the plurality of battery modules, and a case plate coupled to an edge of the case cover; and a gasket in a groove of the case plate located in correspondence to an edge of the case plate. The case plate comprises a first side surface plate covering both side surfaces of the plurality of battery modules, and a second side surface plate covering the front and rear surfaces of the plurality of battery modules. The gasket includes a rib.

Abstract: The present disclosure relates to an apparatus and method for diagnosing a state of a battery pack, and more particularly, to an apparatus and method for diagnosing a state of a battery pack based on a SOC of a battery module included in the battery pack. According to the present disclosure, since the SOC of the battery module corresponding to an induced abnormal situation is estimated and the state of each battery module is diagnosed based on the estimated SOC, a risk factor that may occur in the battery module may be diagnosed in advance.

Abstract: A busbar and a busbar manufacturing method in which at least one current groove in the body of the busbar is included or at least two current sticks are attached to one side of the base busbar to be spaced apart, such that an allowable current of busbar is increased by more than 1% and a generated heat amount is reduced by more than 2% at the same time.

Abstract: A battery pack includes a plurality of battery modules arranged in a front and rear direction, and each of the plurality of battery modules includes a plurality of cylindrical battery cells; a module housing having a plurality of hollows in which the plurality of cylindrical battery cells are accommodated; and a connection plate having a body portion at the upper portion or the lower portion of the plurality of cylindrical battery cells and provided with a plurality of connection terminals respectively in electrical contact and connection with the electrode terminal at one of the plurality of cylindrical battery cells, and a connection portion to protrusively extend in a left direction or a right direction from the body portion so that the protrusively extending portion is bent upward or downward from the body portion and the bent end is in contact and connection with a portion of another connection plate.

Abstract: The present disclosure relates to a battery module and a battery pack including the same, and more particularly, to a battery module and a battery pack having the same, the battery module being formed in a heat transfer structure so that the temperatures of a plurality of battery cells are efficiently adjusted, and formed such that a heat transfer member is formed to have through holes so that the stability of the battery cells increases.

Abstract: A battery pack includes a plurality of battery modules arranged in a front and rear direction, and each of the plurality of battery modules includes a plurality of cylindrical battery cells; a module housing having a plurality of hollows in which the plurality of cylindrical battery cells are inserted and accommodated; and a connection plate having a body portion located at the upper portion or the lower portion of the plurality of cylindrical battery cells and provided with a plurality of connection terminals respectively in electrical contact and connection with the electrode terminal formed at one of the plurality of cylindrical battery cells, and a connection portion configured to protrusively extend in a left direction or a right direction from the body portion so that the protrusively extending portion is bent upward or downward from the body portion and the bent end is in contact and connection with a portion of another connection plate.

Abstract: Provided are a battery case, a battery module, a battery pack, and a vehicle including the battery case, and a method of manufacturing the battery case. A battery case according to an embodiment includes a lower case in which a plurality of battery cells are accommodated, and an upper case coupled to the lower case, wherein an insert nut is provided in at least one of the upper case and the lower case, a pinhole is formed at a position adjacent to the insert nut of the at least one of the upper case and the lower case, and the pinhole is blocked.

Abstract: Discussed is a battery pack, the temperature of which is maintained within a certain range by a heating component or a heat dissipating component attached thereto. The battery pack includes an upper end cover provided above cylindrical cells to protect an inside of the battery pack, a first metal panel positioned below the upper end cover and jointed to the upper portion of the cylindrical cells, a second metal panel jointed to a lower portion of the cylindrical cells, a holder configured to surround and fix an outer side surface of the entire cylindrical cells and the lower portion of the second metal panel, and a lower end cover positioned below the second metal panel and the holder to form a lower end portion of the battery pack.

Abstract: The present disclosure relates to a battery pack, and more particularly, to a battery pack, the temperature of which is maintained within a certain range by a heating component or a heat dissipating component attached thereto.

Abstract: A battery management apparatus according to an embodiment of the present disclosure includes a voltage measurer for measuring a voltage of a battery module and output a measured voltage value; a current measurer for measuring a charging current of the battery module and output a measured current value; and a controller for receiving the measured voltage value and the measured current value, estimating a state of charge (SOC) of the battery module based on the measured voltage value and the measured current value, calculating an accumulated change rate by adding up a change rate of the estimated SOC per unit time, and detecting whether the battery module has a defect by comparing the calculated accumulated change rate with a reference change rate.

Abstract: The present disclosure relates to a battery module and a battery pack including the same, and more particularly, to a battery module and a battery pack having the same, the battery module being formed in a heat transfer structure so that the temperatures of a plurality of battery cells are efficiently adjusted, and formed such that a heat transfer member is formed to have through holes so that the stability of the battery cells increases.

Abstract: A battery module includes a plurality of cylindrical battery cells respectively having electrode terminals formed at an upper portion and a lower portion thereof; a module housing including an accommodation portion having a plurality of hollow structures in which the plurality of cylindrical battery cells are inserted and accommodated; and a module bus bar including a first metal plate having a body portion located at an upper portion or a lower portion of the plurality of cylindrical battery cells to extend in a horizontal direction and a plurality of connection portions configured to extend in a horizontal direction from one side of the body portion to contact the electrode terminals of the plurality of cylindrical battery cells, and a second metal plate bonded to the body portion of the first metal plate and having a metal with a relatively higher electric conductivity than the first metal plate.

Abstract: A heat-radiating structure of a cylindrical battery cell includes a first plate configured to contact an upper partial area of a battery cell and to which a current of the battery cell is discharged, the first plate having an area not contacting the battery cell, a second plate disposed between the first plate and the battery cell, the second plate not contacting the battery cell, and a heat transfer part disposed between the second plate and the battery cell and configured to transfer heat generated in the battery cell to the second plate while contacting the battery cell is provided. The second plate contacts the area of the first plate not contacting the battery cell and a portion of the current discharged from the battery cell to the first plate is discharged from the second plate. A heat-radiating system of a cylindrical battery is also provided.