Charging device

Details Charging device Charging device

2004-11-01

2009-12-29

Ullah, Akm E (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

Multi-rate charging

Reexamination Certificate

active

07638981

ABSTRACT:
A circuit device contains a main circuit structure for main charging and a setting unit incorporated into the circuit structure for setting a weak current. The charging device includes a power-source for supplying a charging current to a secondary battery, an operational amplifier for controlling the supply of the charging current by the power source, and a power element for controlling the supply of the charging current to the secondary battery. Main charging is performed on the secondary battery by supplying a normal current to the secondary battery as the charging current. Trickle charging is performed on the secondary battery by supplying a weak current to the secondary battery as the charging current.

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Search Report dated Feb. 25, 2005 for European Patent Application No. 04 25 6767.

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