Abstract: A charge/discharge control apparatus according to one aspect of the present invention is an apparatus that controls charge or discharge of a secondary battery to be charged or discharged on the basis of at least one condition of use calculated from a deterioration model or a deterioration map of a secondary battery and at least one inner state parameter of the secondary battery to be charged or discharged. The charge/discharge control apparatus updates the condition of use on the basis of change of the inner state parameter.

Abstract: A charge control apparatus according to an embodiment controls charge of a secondary battery to be charged, on the basis of a charge pattern which is calculated from inner state parameters of the secondary battery to be charged, and of a deterioration model or deterioration map of a secondary battery. The charge control apparatus updates the charge pattern on the basis of change of the inner state parameters.

Abstract: A storage battery controlling device according to an embodiment of the present invention includes: a battery characteristic estimator configured to calculate an internal resistance of a secondary battery and a function indicating relationship between an open circuit voltage of the secondary battery and a state of charge or an amount of a charge charged of the secondary battery therein, on the basis of data of a temperature, a voltage and a current of the secondary battery which are measured in charging or discharging the secondary battery; and an input/output performance value calculator configured to calculate an inputtable/outputtable power amount of the secondary battery on the basis of the internal resistance and the function calculated by the battery characteristic estimator.

Abstract: A storage battery evaluation device according to an embodiment of the present invention includes a processor configured to execute a program to provide at least a battery characteristic estimator and a deterioration progress calculator. The battery characteristic estimator estimates a battery characteristic including at least one of battery capacity, internal resistance, and open-circuit voltage of a secondary battery on the basis of data of voltage and current of the secondary battery, the data being measured at the time of charging or discharging of the secondary battery. The deterioration progress calculator calculates a deterioration progress representing the progress of deterioration of the secondary battery, on the basis of a value related to a performance index of the secondary battery, the value being calculated on the basis of the battery characteristic.

Abstract: According to one embodiment, a battery includes: a first wire; a second wire; a third wire; a first resistor; a first switch; a second switch; a second resistor; a voltage measurer; and a controller that calculates a second resistance value of the third wire using a first voltage of a first battery when the first switch is turned on and the second switch is turned off, a second voltage of a second battery when the first switch is turned on and the second switch is turned off, a third voltage of the second battery when the first switch is turned off and the second switch is turned off, and a first resistance value of the first resistor.

Abstract: According to an embodiment, a battery pack includes an initial state estimation unit, a temperature estimation unit, and a determination unit. The internal state estimation unit estimates an internal state of a secondary battery based on measurement data. The temperature estimation unit estimates the temperature of the secondary battery based on the measurement data and the estimation parameter. The determination unit compares an absolute value of a temperature difference between a measured temperature of the secondary battery contained in the measurement data and the estimated temperature with one or more temperature threshold levels, and determines a temperature state of the secondary battery in accordance with a comparison result.