Electricity: battery or capacitor charging or discharging – Battery or cell charging – Pulsed
Reexamination Certificate
2004-04-28
2009-06-02
Ullah, Akm E (Department: 2838)
Electricity: battery or capacitor charging or discharging
Battery or cell charging
Pulsed
C320S140000, C320S157000, C320S162000
Reexamination Certificate
active
07541778
ABSTRACT:
A method for charging a battery at a battery charger comprising connection means for connection to the terminals of a battery to be charged, means for detecting a voltage over the terminals of a connected battery, and control means. The method comprises the steps of initiating a burst cycle, wherein a plurality of consecutive voltage burst are applied to a connected battery to be charged, each burst successively lowering the internal resistance of the battery and initiating a charging cycle to charge the connected battery when said burst cycle has been terminated. Furthermore, a method for maintenance charging a battery at a battery charger including detecting a voltage over the connected battery; maintaining the voltage over the battery at a predetermined level for a predetermined period of time; monitoring a battery capacity parameter when said predetermined period of time has elapsed; and applying at least one voltage pulse if said parameter falls below a predetermined threshold level.
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International Search Report of PCT/SE2004/000641, mailed Jul. 28, 2004.
Official Action issued in corresponding European Application No. 06120525.8-2007 dated Jun. 6, 20028.
Creator Teknisk Utveckling AB
Nixon & Vanderhye P.C.
Ullah Akm E
Williams Arun
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