| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a secondary battery device useful in a device which has less error in estimated remaining capacity and performs charge and discharge at short intervals.SOLUTION: A secondary battery device comprises a control part 200 which includes: a measurement part 211 for measuring an open circuit voltage of a secondary battery (battery module 111); a table memory 220 including an SOC estimation table in which a value of a first remaining capacity corresponding to an open circuit voltage of the secondary battery at a predetermined temperature is stored and a remaining capacity estimation error table in which an error included in a value of the first remaining capacity corresponding to an open circuit voltage of the secondary battery when charge or discharge of the secondary battery at the predetermined temperature is stopped; a correction part 234 for acquiring a first remaining capacity corresponding an open circuit voltage of the secondary battery by using the SOC estimation table; an estimation error creation part 235 for acquiring an estimated error included in the first remaining capacity by using the remaining capacity estimation error table; and a remaining capacity calculation part 236 for calculating an estimated value of the remaining capacity of the secondary battery from the first remaining capacity and the estimated error.</p> |
