A battery capacity calculation device (43) and a battery capacity calculation method to calculate a full charge capacity at a high frequency.The battery capacity calculation device (43) includes a controller (44). The controller (44) is configured to acquire, while a battery (41) is in charge, a first voltage value and a charge current value of the battery (41), acquire, while charging of the battery (41) is in pause, a second voltage value of the battery (41), calculate an impedance value of the battery (41) by using the first voltage value, the second voltage value, and the charge current value, calculate an impedance growth that is a ratio of the impedance value to an initial impedance value recorded in a memory (45) in advance, acquire the number of cycles of the battery (41), acquire time until a temperature of the battery (41) falls within a predetermined temperature range and an output voltage value of the battery (41) falls within a predetermined voltage range, and calculate a full charge capacity of the battery (41) by using the number of cycles, the impedance growth, and the time.
BATTERY CAPACITY CALCULATION DEVICE AND BATTERY CAPACITY CALCULATION METHOD
VORRICHTUNG ZUR BERECHNUNG DER BATTERIEKAPAZITÄT UND VERFAHREN ZUR BERECHNUNG DER BATTERIEKAPAZITÄT
DISPOSITIF DE CALCUL DE CAPACITÉ DE BATTERIE ET PROCÉDÉ DE CALCUL DE CAPACITÉ DE BATTERIE
22.01.2025
Patent
Elektronische Ressource
Englisch
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