Remaining battery power calculation circuit
AssigneeON Semiconductor Trading, Ltd.
InventorsSusumu Yamada, Hideo Kondo, Seiji Takai
Life of this patent
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Abstract
A remaining battery power calculation circuit includes: a detection unit configured to detect an output voltage of a battery; a data storage unit configured to store data in an associated manner with each of a plurality of current values for charge or discharge of the battery, the data indicating a relationship between the output voltage and a ratio of remaining power of the battery to a capacity of the battery in a case where the battery is charged or discharged with each of the plurality of current values; and a first calculation unit configured to calculate a charging/discharging current of the battery based on the data and the output voltage.
Claims7
A remaining battery power calculation circuit comprising:
- a detection unit configured to detect an output voltage of a battery;
- a data storage unit configured to store data in an associated manner with each of a plurality of current values for charge or discharge of the battery, the data indicating a relationship between the output voltage and a ratio of remaining power of the battery to a capacity of the battery in a case where the battery is charged or discharged with each of the plurality of current values;
- and
- a first calculation unit configured to calculate a charging/discharging current of the battery based on the data and the output voltage.
A remaining battery power calculation circuit comprising:
- a detection unit configured to detect an output voltage of a battery;
- a first data storage unit configured to store first data in an associated manner with each of a plurality of current values for charge or discharge of the battery, the first data indicating a relationship between the output voltage and a ratio of remaining power of the battery to a capacity of the battery in a case where the battery is charged or discharged with each of the plurality of current values;
- a second data storage unit configured to store second data, the second data corresponding to the remaining power of the battery;
- a first calculation unit configured to calculate a charging/discharging current of the battery based on the first data, the second data, and the output voltage;
- and
- an update unit configured to update the second data based on the calculated charging/discharging current.
Dependencies are inferred from the claim text.