Storage battery controlling device, controlling method, non-transitory computer readable medium, power storage system, and power system
First Claim
1. The storage battery controlling device comprising:
- a battery characteristic estimator configured to;
calculate (i) an internal resistance of a secondary battery, and (ii) initial charge amounts and masses of a positive electrode and a negative electrode 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
calculate (iii) a function indicating a 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 the calculated initial charge amounts and masses;
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; and
an internal resistance corrector configured to calculate an internal resistance at a predetermined reference temperature on the basis of the data of the temperature of the secondary battery and the internal resistance calculated by the battery characteristic estimator, whereinthe input/output performance value calculator calculates the inputtable/outputtable power amount of the secondary battery at the reference temperature on the basis of the internal resistance at the reference temperature.
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Accused Products
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.
17 Citations
10 Claims
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1. The storage battery controlling device comprising:
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a battery characteristic estimator configured to; calculate (i) an internal resistance of a secondary battery, and (ii) initial charge amounts and masses of a positive electrode and a negative electrode 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 calculate (iii) a function indicating a 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 the calculated initial charge amounts and masses; 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; and an internal resistance corrector configured to calculate an internal resistance at a predetermined reference temperature on the basis of the data of the temperature of the secondary battery and the internal resistance calculated by the battery characteristic estimator, wherein the input/output performance value calculator calculates the inputtable/outputtable power amount of the secondary battery at the reference temperature on the basis of the internal resistance at the reference temperature. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A controlling method by which a computer executes:
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calculating an internal resistance of a secondary battery; calculating initial charge amounts and masses of a positive electrode and a negative electrode 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; calculating a function indicating a 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 the calculated initial charge amounts and masses; calculating an inputtable/outputtable power amount of the secondary battery on the basis of the internal resistance and the function; and calculating an internal resistance at a predetermined reference temperature on the basis of the data of the temperature of the secondary battery and the calculated internal resistance, wherein the inputtable/outputtable power amount of the secondary battery is calculated at the reference temperature on the basis of the internal resistance at the reference temperature.
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8. A non-transitory computer readable medium having a computer program stored therein which causes a computer when executed by the computer, to perform processes comprising:
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calculating an internal resistance of a secondary battery; calculating initial charge amounts and masses of a positive electrode and a negative electrode 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; calculating a function indicating a 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 the calculated initial charge amounts and masses; calculating an inputtable/outputtable power amount of the secondary battery on the basis of the internal resistance and the function; and calculating an internal resistance at a predetermined reference temperature on the basis of the data of the temperature of the secondary battery and the calculated internal resistance, wherein the inputtable/outputtable power amount of the secondary battery is calculated at the reference temperature on the basis of the internal resistance at the reference temperature.
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9. 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 (i) an internal resistance of the secondary battery, and (ii) initial charge amounts and masses of a positive electrode and a negative electrode 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 calculate (iii) a function indicating a 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 the calculated initial charge amounts and masses; 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, and an internal resistance corrector configured to calculate an internal resistance at a predetermined reference temperature on the basis of the data of the temperature of the secondary battery and the internal resistance calculated by the battery characteristic estimator, wherein; 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, 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, and the input/output performance value calculator calculates the inputtable/outputtable power amount of the secondary battery at the reference temperature on the basis of the internal resistance at the reference temperature.
- a storage battery;
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10. 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 (i) an internal resistance of the secondary battery, and (ii) initial charge amounts and masses of a positive electrode and a negative electrode 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 calculate (iii) a function indicating a 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 the calculated initial charge amounts and masses; 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, and an internal resistance corrector configured to calculate an internal resistance at a predetermined reference temperature on the basis of the data of the temperature of the secondary battery and the internal resistance calculated by the battery characteristic estimator, wherein; 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, and the input/output performance value calculator calculates the inputtable/outputtable power amount of the secondary battery at the reference temperature on the basis of the internal resistance at the reference temperature.
- a storage battery;
Specification