Abstract: A battery protection circuit includes: a charging control switch connected in series to a big current path between a battery module configured with a plurality of cells connected in series and a plurality of pack terminals; a battery controller for controlling the charging control switch based on cell voltages of the cells; and a plurality of first protection circuits connected to the respective cells on the big current path, and intercepting or allowing a current flowing to the corresponding cell based on the cell voltage of the corresponding cell from among the cells, wherein the first protection circuits respectively include at least one switch connected in series between neighboring cells or between one of the cells and a first pack terminal from among the pack terminals, and a cell controller for controlling the at least one switch according to a cell voltage of the corresponding cell.

Abstract: A battery module includes: a battery cell stack including a plurality of battery cells; a first connection member coupled to anode terminals of the plurality of battery cells; and a second connection member coupled to cathode terminals of the plurality of battery cells. The first connection member includes a first common node to which a first module terminal is coupled. The second connection member includes a second common node to which a second module terminal is coupled. The first common node is located between a center of the battery cell stack and a first battery cell, among first and second battery cells located at outermost sides of the battery cell stack. The second common node is located between the second battery cell and the center of the battery cell stack.

Abstract: A battery module includes battery cells, a first connection member connecting first terminals of the battery cells to each other and connected to a first common node, and a second connection member connecting second terminals of the battery cells to each other and connected to a second common node. The first common node is adjacent to a first battery cell between first and second battery cells at the outermost periphery of the battery cells. The second common node is adjacent to the second battery cell between the first and second battery cells. The first connection member is configured such that as the distance from the first common node is increased, a resistance for unit length is gradually increased. The second connection member is configured such that as the distance from the second common node is increased, a resistance for unit length is gradually increased.

Abstract: A battery protection circuit includes: a charging control switch connected in series to a big current path between a battery module configured with a plurality of cells connected in series and a plurality of pack terminals; a battery controller for controlling the charging control switch based on cell voltages of the cells; and a plurality of first protection circuits connected to the respective cells on the big current path, and intercepting or allowing a current flowing to the corresponding cell based on the cell voltage of the corresponding cell from among the cells, wherein the first protection circuits respectively include at least one switch connected in series between neighboring cells or between one of the cells and a first pack terminal from among the pack terminals, and a cell controller for controlling the at least one switch according to a cell voltage of the corresponding cell.

Abstract: The present invention introduces a high entropy alloy doped with boron, comprising four or more metals selected from iron (Fe), chromium (Cr), nickel (Ni), cobalt (Co), manganese (Mn), molybdenum (Mo), aluminum (Al) and copper (Cu), and boron (B) which has single phase FCC structure.

Abstract: A battery protection circuit includes: a plurality of pack terminals configured to connect a battery module to an external device; a first fuse element located on a current path between the battery module and the pack terminals to block a current flow between the battery module and the pack terminals depending on a voltage applied to a control terminal thereof; a first integrated circuit configured to include a first input terminal and control a voltage outputted to the control terminal of the first fuse element depending on a voltage applied to the first input terminal; and a plurality of thermistors connected in series between a positive electrode of the battery module and a first input terminal of the first integrated circuit and having resistance that is varied depending on a temperature of a corresponding cell among a plurality of cells constituting the battery module.

Abstract: A battery protection circuit includes: a plurality of pack terminals configured to connect a battery module to an external device; a first fuse element located on a current path between the battery module and the plurality of pack terminals to block a current flow between the battery module and the plurality of pack terminals depending on a voltage applied to a control terminal thereof; a first integrated circuit configured to include a first input terminal and configured to control a voltage outputted to the control terminal of the first fuse element depending on a voltage applied to the first input terminal; and a plurality of thermistors connected in series between a positive electrode of the battery module and a first input terminal of the first integrated circuit and each thermistor of the plurality of thermistors having resistance that is varied depending on a temperature of a corresponding cell among a plurality of cells constituting the battery module.

Abstract: A battery protection circuit includes: a plurality of pack terminals configured to connect a battery module to an external device; a first fuse element located on a current path between the battery module and the pack terminals to block a current flow between the battery module and the pack terminals depending on a voltage applied to a control terminal thereof; a first integrated circuit configured to include a first input terminal and control a voltage outputted to the control terminal of the first fuse element depending on a voltage applied to the first input terminal; and a plurality of thermistors connected in series between a positive electrode of the battery module and a first input terminal of the first integrated circuit and having resistance that is varied depending on a temperature of a corresponding cell among a plurality of cells constituting the battery module.

Abstract: An external battery apparatus includes at least one battery cell; a circuit device to increase a voltage of the battery cell to a predetermined voltage level and to output the increased voltage level; a cell voltage measurer configured to measure the voltage of the battery cell; and a controller configured to compare the measured voltage of the battery cell with a predetermined reference value, and to control the circuit device such that a charging current having a different level is output corresponding to a result of the comparison.

Abstract: An external battery is disclosed. In one aspect, the external battery includes an input terminal configured to receive power from an external charger, a charge current generator configured to generate a charge current based on the received power and a bare cell configured to output a voltage corresponding to the charge current. The external battery also includes a direct current to direct current (DC-DC) converter configured to convert the output voltage of the bare cell into a voltage with a different value from that of the output voltage and output the converted voltage. The external battery further includes an output terminal configured to apply the converted voltage to an external device and a main controller unit (MCU) configured to determine whether the external device is properly connected to the output terminal based at least in part on the output voltage of the bare cell.