A current measurement apparatus configured to quickly block current. The current measurement apparatus includes a first terminal, a second terminal, a resistor interposed in a separated space between the first terminal and the second terminal; a circuit board, a control unit mounted on the circuit board and configured to measure a current flowing in the resistor by using a voltage value between the first terminal and the second terminal and a resistance value of the resistor, and a cutting unit located above or below the resistor and configured to cut the resistor according to a control signal of the control unit.

The present technology relates to an apparatus for measuring a capacity of a battery cell, and a method of measuring a capacity of a battery cell. The apparatus includes: a jig configured to have a battery cell mounted thereon and press the battery cell from both surfaces; a charge/discharge unit configured to be connected to the battery cell; and a charge/discharge chamber configured to accommodate the jig and the battery cell, wherein a thermoelectric element for adjusting a temperature of the battery cell is formed on an external surface of the jig.

The present technology relates to an apparatus for measuring a capacity of a battery cell, and a method of measuring a capacity of a battery cell. The apparatus includes: a jig configured to have a battery cell mounted thereon and press the battery cell from both surfaces; a charge/discharge unit configured to be connected to the battery cell; and a charge/discharge chamber configured to accommodate the jig and the battery cell, wherein a thermoelectric element for adjusting a temperature of the battery cell is formed on an external surface of the jig.

The present invention relates to a method for manufacturing a degenerate cell and a method for evaluating a degenerate cell including the same. The method for manufacturing a degenerate cell includes: preparing a battery cell which has a structure where an electrode assembly, which is generated by lamination of a negative electrode, a positive electrode, and a separator, is accommodated in a battery case, and an electrode lead is drawn out to an outside of the battery case; and precipitating lithium metal on a predetermined region between the negative electrode and the separator by performing charge and discharge under predetermined temperature, pressure and charge and discharge pattern conditions.

The present invention relates to a method for manufacturing a degenerate cell and a method for evaluating a degenerate cell including the same. The method for manufacturing a degenerate cell includes: preparing a battery cell which has a structure where an electrode assembly, which is generated by lamination of a negative electrode, a positive electrode, and a separator, is accommodated in a battery case, and an electrode lead is drawn out to an outside of the battery case; and precipitating lithium metal on a predetermined region between the negative electrode and the separator by performing charge and discharge under predetermined temperature, pressure and charge and discharge pattern conditions.

Disclosed are a communication method between a master controller and slave controllers, a slave controller for the communication method, and a battery management system using the communication method and the slave controller, in which the master controller receives safety information about battery cells through a plurality of channels even when each of a plurality of slave controllers includes only one micro controller unit, thereby minimizing the increase in the cost and enhancing the safety of the battery management system. The communication method includes performing bidirectional communication between a master controller and first to N.sup.th (where N is an integer equal to or more than two) slave controllers through a first communication channel, and receiving, by the master controller, an indication signal through a second communication signal via the first to N.sup.th slave controllers.

Example embodiments of the described technology provide an apparatus for testing an electrochemical system. The apparatus may comprise a testing module electrically coupled to the electrochemical system. The testing module may comprise a discharge circuit configured to draw current from the electrochemical system at a plurality of different rates. The discharge circuit may be configured to continuously draw current from the electrochemical system once a test of the electrochemical system is commenced. The apparatus may also comprise a measurement module which may be configured to measure voltage across terminals of the electrochemical system and current drawn from the electrochemical system during the test. The apparatus may also comprise a processor. The processor may be configured to compensate at least in part the measured voltage for voltage drift which was generated by continuously drawing current from the electrochemical system. The processor may also be configured to compute a state of health of the electrochemical system based at least in part on the compensated voltage and the measured current.

Example embodiments of the described technology provide an apparatus for testing an electrochemical system. The apparatus may comprise a testing module electrically coupled to the electrochemical system. The testing module may comprise a discharge circuit configured to draw current from the electrochemical system at a plurality of different rates. The discharge circuit may be configured to continuously draw current from the electrochemical system once a test of the electrochemical system is commenced. The apparatus may also comprise a measurement module which may be configured to measure voltage across terminals of the electrochemical system and current drawn from the electrochemical system during the test. The apparatus may also comprise a processor. The processor may be configured to compensate at least in part the measured voltage for voltage drift which was generated by continuously drawing current from the electrochemical system. The processor may also be configured to compute a state of health of the electrochemical system based at least in part on the compensated voltage and the measured current.

A system or method for determining a battery state can include receiving a set of sensor measurements; determining the battery state using a state estimator collocated with the battery; and determining parameters used by the state estimator using a second state estimator operating on a processor remote from the battery.

A system or method for determining a battery state can include receiving a set of sensor measurements; determining the battery state using a state estimator collocated with the battery; and determining parameters used by the state estimator using a second state estimator operating on a processor remote from the battery.