| 摘要 |
PROBLEM TO BE SOLVED: To provide a charging apparatus for conducting refresh charging in a short time. SOLUTION: The charging apparatus has a charging-current supply section 10 for supplying a secondary battery 20 with a charging current, a battery hysteresis storage section 21 in which the number of the charging of the secondary battery 20 is stored and a control circuit 16 conducting overcharging up to approximately 150% of capacity, by the charging current of approximately 1C from the start of charging as refresh charging in a charging-current supply circuit section 20, when the state in which the secondary battery 20 is not charged even once or in a state in which a fixed number of normal charging has been previously conducted, after preceding refresh charging has been decided from the number of charging stored by the storage section 21. Usability can be improved by refresh-charging the secondary battery 20, without special operations by a user, while the secondary battery can be subjected to refresh charging in a time shorter than in the conventional examples. |
