Battery systems and remaining capacity management systems for secondary battery
AssigneeNEC Energy Devices, Ltd.
InventorsYoichi Hashimoto, Hiroaki Ueno
Life of this patent
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Abstract
A battery system according to the present invention includes a secondary battery; a battery control unit that controls charging and discharging of said secondary battery; and a charging/discharging management unit that controls the charging and discharging of said secondary battery through said battery control unit, wherein said battery control unit, if an abnormality occurred during operation of said battery control unit, transmits remaining capacity data that represent a remaining capacity of said secondary battery that remained immediately before the abnormality occurred to said charging/discharging management unit.
Claims7
A battery system, comprising:
- a secondary battery;
- a battery control unit that controls charging and discharging of said secondary battery;
- and
- a charging/discharging management unit that controls the charging and discharging of said secondary battery through said battery control unit,
- wherein, if an abnormal operation occurs in the inner portion of said battery control unit, said battery control unit transmits remaining capacity data that represent a remaining capacity of said secondary battery that remains immediately before the abnormal operation occurs, to said charging/discharging management unit,
- wherein said battery control unit includes:
- a battery protection unit that protects said secondary battery, and
- a battery management unit that controls the charging and discharging of said secondary battery through said battery protection unit,
- wherein said battery management unit includes:
- an abnormal operation determination unit that determines whether or not an abnormal operation occurs in said battery protection unit;
- and
- a communication unit that, if the abnormal operation occurs in said battery protection unit, transmits said remaining capacity data of said secondary battery, that remains immediately before the abnormal operation occurs, to said charging/discharging management unit.
A remaining capacity management method of a secondary battery for a battery system having a secondary battery;
- a battery control unit that controls charging and discharging of said secondary battery;
- and a charging/discharging management unit that controls the charging and discharging of said secondary battery through said battery control unit, the battery control unit having a battery protection unit that protects said secondary battery, and a battery management unit that controls the charging and discharging of said secondary battery through said battery protection unit, the battery management unit having an abnormal operatino determination unit and a communication unit, comprising:
- if an abnormal operation occurs in the inner portion of said battery control unit, causing said battery control unit to transmit remaining capacity data that represent a remaining capacity of said secondary battery that remains immediately before the abnormal operation occurs,
- wherein causing said battery control unit to transmit remaining capacity date comprises:
- causing the abnormal operation determination unit to determine whether or not an abnormal operation occurs in said battery protection unit;
- and
- causing a communication unit that, if the abnormal operation occurs in said battery protection unit, to transmit said remaining capacity data of said secondary battery, that remains immediately before the abnormal operation occurs, to said charging/discharging management unit.
Dependencies are inferred from the claim text.