Battery charging device having time shared charging cycle

Details Battery charging device having time shared charging cycle Battery charging device having time shared charging cycle

1996-10-21

1998-03-10

Tso, Edward

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 15, 320 21, H01M 1046

Patent

active

057265518

ABSTRACT:
A battery charging unit is provided with a charge controlling unit which is designed to perform at least one of rest mode operating function which causes to rest charging for respective battery, groups and discharge mode operating function which causes to discharge electric power from the respective battery groups in addition to charge mode operating function for the respective battery groups, the battery charging unit controls charging for the respective battery groups through the charge controlling unit while repeating at least two modes including the charging mode among the charging mode, rest mode and discharge mode in a predetermined time cycle and further performs a mutual control between the respective battery groups so that at least one battery group is placed in the rest mode in a predetermined sequence during the operation thereof, thereby, drawbacks of a conventional pulse like charging and burp charging, which are suitable for a quick charging but requires a large instantaneous charging current which causes the size increse of the charging unit and the electric circuit concerned, are eliminated.

REFERENCES:
patent: 4689531 (1987-08-01), Bacon
patent: 5003244 (1991-03-01), Davis, Jr.
patent: 5055763 (1991-10-01), Johnson et al.
patent: 5130634 (1992-07-01), Kasai
patent: 5187422 (1993-02-01), Izenbaard et al.
patent: 5237258 (1993-08-01), Crampton
patent: 5241258 (1993-08-01), Cheon
patent: 5254930 (1993-10-01), Daly
patent: 5523668 (1996-06-01), Feldstein

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