Battery charging circuit with charging rate control

Details Battery charging circuit with charging rate control Battery charging circuit with charging rate control

1996-04-22

1997-12-16

Tso, Edward

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 23, 320 49, H01M 1046

Patent

active

056989636

ABSTRACT:
A battery charging circuit controls between rapid charging and trickle charging used to charge a NiCd/NiMH battery. The circuit perceives when the rapid charging operation has completely charged the battery and thereafter converts the charging operation to a trickle charging in order to compensate for the charging loss of a battery due to the leakage discharge. The form of charging is controlled by restricting the maximum amount of current provided to the battery using current-mode pulse width modulation.

REFERENCES:
patent: 5442274 (1995-08-01), Tamai
patent: 5541491 (1996-07-01), Yamazaki et al.

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