Battery pack that calculates full charge capacity of a battery based on a state of charge
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United States of America Patent
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May 4, 2021
Grant Date -
Nov 7, 2019
app pub date -
Jul 15, 2019
filing date -
Jan 13, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
A battery pack includes a secondary battery, a state of charge calculator, an integrated current amount calculator, a differential state of charge calculator, a full charge capacity calculator, and a charging-and-discharging control section. The differential state of charge calculator calculates a differential state of charge between a first state of charge at a first detection timing and a second state of charge at a second detection timing. The integrated current amount calculator calculates an integrated amount of a current flowing to the secondary battery in a subject period from the first detection timing to the second detection timing. The full charge capacity calculator calculates a full charge capacity of the secondary battery based on the differential state of charge and the integrated current amount. The charging-and-discharging control section is configured to restrict one of the charging and the discharging of the secondary battery during the subject period.
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