| 摘要 |
A battery charging apparatus includes a charger (12) to which a battery (16) to be charged is loaded and a charge controller (10) which controls a charge in the charger. A terminal voltage of the battery loaded in the charger is sampled and A/D converted by a microcomputer (26) of the charge controller at time intervals. At every timing when a new sampled value is stored in a memory, the new sampled value is compared with a maximum sampled value which has been stored in the memory before that time. When the new sampled value is smaller than the maximum sampled value by a predetermined value ( DELTA V), a full-charge signal is outputted. In addition, when a state where the new sampled value is larger than the maximum sampled value continues for a predetermined time period or more, the maximum sampled value is updated. |
