Charger system switchably connects a smoothing capacitor and res

Details Charger system switchably connects a smoothing capacitor and res Charger system switchably connects a smoothing capacitor and res

1998-03-05

1999-11-09

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell charging

With detection of current or voltage amplitude

323354, 363 47, H02J 700, G05B 2402, H02M 112

Patent

active

059821531

ABSTRACT:
A battery charging system detects a secondary battery terminal voltage and selectively controls a first switch to connect/disconnect a series-connected smoothing capacitor and resistor to ground to present an impedance greater than the battery impedance and further controls a second switch to connect/disconnect a charging control circuit in series between the voltage supply and the secondary battery being charged.

REFERENCES:
patent: 4942352 (1990-07-01), Sano
patent: 5396164 (1995-03-01), Anegawa
patent: 5637981 (1997-06-01), Nagai et al.
patent: 5659237 (1997-08-01), Divan et al.

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