Battery charging control circuit

Details Battery charging control circuit Battery charging control circuit

2009-03-25

2011-12-27

Assouad, Patrick (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With detection of current or voltage amplitude

C320S162000, C320S139000

Reexamination Certificate

active

08085001

ABSTRACT:
The present invention provides a charging control circuit for a rechargeable battery. The charging control circuit includes: a constant-current charging unit and a trickle charging unit. The charging control circuit further includes a branch switch, a detection switch, a control unit, and a detection unit. The branch switch is connected between a power source and the rechargeable battery for enabling or disabling the constant-current charging unit, the detection switch is turned on or off depending on the enable or disable state of the constant-current charging unit. The control unit is connected between the detection switch and the branch switch for controlling the branch switch to turn on or off depending on the off or on state of the detection switch.

REFERENCES:
patent: 5880576 (1999-03-01), Nagai
patent: 2004/0164708 (2004-08-01), Veselic et al.
patent: 2008/0197811 (2008-08-01), Hartular et al.
patent: 2009/0058369 (2009-03-01), Wang et al.
patent: 2009/0309547 (2009-12-01), Nakatsuji
patent: 2010/0188051 (2010-07-01), Yamazaki et al.
patent: 2011/0025277 (2011-02-01), Hussain et al.

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