Charge control device for a secondary battery

Details Charge control device for a secondary battery Charge control device for a secondary battery

2005-11-10

2009-11-17

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C320S129000, C320S132000, C320S136000, C324S432000, C324S433000

Reexamination Certificate

active

07619389

ABSTRACT:
A charge circuit6supplies a charging voltage (Vc) or a charging current to a secondary battery2, 24to26used for driving an appliance21; a charged level setting device5, Sc1causes the charge circuit6to charge the secondary battery2, 24to26to a predetermined charged level, and detection means12detects a charged level of the secondary battery2; a discharge section21, 5, Sc1discharges the secondary battery2; and control means operates the charge circuit6when the predetermined charged level is higher than the detected charged level, and discharges the secondary battery by the discharge section21, 5, Sc1when the predetermined charged level is lower than the detected charged level Thus, it is possible to provide a charge control device capable of extending a cycle life of a secondary battery.

REFERENCES:
patent: 3665285 (1972-05-01), Mullersman et al.
patent: 4399510 (1983-08-01), Hicks
patent: 4670703 (1987-06-01), Williams
patent: 5677944 (1997-10-01), Yamamoto et al.
patent: 2003/0076074 (2003-04-01), Kawai
patent: 7-231294 (1995-08-01), None
patent: 2002-51478 (2002-02-01), None
patent: 2002-78222 (2002-03-01), None
patent: 2002-199616 (2002-07-01), None

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