Battery charging apparatus

Details Battery charging apparatus Battery charging apparatus

1989-11-08

1993-01-19

Hickey, R. J.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 37, 320 39, H02J 700

Patent

active

051809613

ABSTRACT:
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.

REFERENCES:
patent: 4118661 (1978-10-01), Siekierski et al.
patent: 4392101 (1983-07-01), Saar et al.
patent: 4746852 (1988-05-01), Martin
patent: 4806840 (1989-02-01), Alexander et al.
Patent Abstracts of Japan vol. 013, No. 433 (E-824) Sep. 27, 1989, 160327, Jun. 23, 1989.

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