Battery charging apparatus

Details Battery charging apparatus Battery charging apparatus

H - Electricity

02

J

320/9

H02J 7/34 (2006.01) H02J 7/00 (2006.01)

Patent

CA 2002760

A battery charging apparatus includes a charger to which a battery to be charged is loaded and a charge controller 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 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.

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