Storage battery controlling device, controlling method, non-transitory computer readable medium, power storage system, and power system

A power storage system comprising:

• a storage battery;
• a storage battery controlling device;
• and a control system, wherein
• the storage battery includes s one or more secondary batteries and performs charge or discharge under a predetermined condition for every fixed period,
• the storage battery controlling device includes
• a battery characteristic estimator configured to calculate an internal resistance of the 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, 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,
• the storage battery controlling device reports each of the inputtable/outputtable power amounts of the secondary batteries in the storage battery to the control system, and
• the control system generates an instruction of charge/discharge with respect to the storage battery on the basis of each of the inputtable/outputtable power amounts of the secondary batteries in the storage battery, and reports the instruction to the storage battery controlling device or the storage battery.

A power system comprising:

• a storage battery;
• a storage battery controlling device;
• a control system;
• and a power generating system or a power line system or both of these, wherein
• the storage battery includes one or more secondary batteries and performs charge or discharge under a predetermined condition for every fixed period,
• the storage battery controlling device includes
• a battery characteristic estimator configured to calculate an internal resistance of the 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, 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,
• the storage battery controlling device reports each of the inputtable/outputtable power amounts of the secondary batteries in the storage battery to the control system, and
• the control system determines an input/output amount of power with respect to the power generating system or the power line system or both of these on the basis of each of the inputtable/outputtable power amounts of the secondary batteries in the storage battery, generates an instruction of charge/discharge with respect to the storage battery, and reports the instruction to the storage battery controlling device or the storage battery.