Battery charger, secondary battery unit and electric...

Details Battery charger, secondary battery unit and electric... Battery charger, secondary battery unit and electric...

2008-07-07

2011-10-18

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

Reexamination Certificate

active

08040107

ABSTRACT:
A mobile telephone has a rechargeable battery, and the rechargeable battery is charged through a battery charger; the battery charger includes an information processing system serving as a charge controller and a battery manager; the battery manager measures a discharging time period of the rechargeable battery so as to store pieces of duration data expressing a charge-and-discharge cycle, and determines a charge initiation level and a charge completion level on the basis of the pieces of duration data in such a manner to reduce the number of charging operation without shortage of electric charge for the rechargeable battery; and the charge controller carries out the charging with reference to the charge initiation level and charge completion level so that the rechargeable battery is prolonged in life time.

REFERENCES:
patent: 6243741 (2001-06-01), Utsumi
patent: 2005/0156571 (2005-07-01), Inui et al.
patent: 1638228 (2005-07-01), None
patent: 2005-117726 (2005-04-01), None

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