Method and apparatus for current compensation of a battery in a

Details Method and apparatus for current compensation of a battery in a Method and apparatus for current compensation of a battery in a

1995-11-24

1997-07-15

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 32, 320 43, H01M 1044, H01M 1046

Patent

active

056487150

ABSTRACT:
A battery charging system (200) is capable of maintaining a fully charged battery (202) without overcharging or undercharging the battery regardless of the operating mode of the radio (204). Charging system (200) includes a charger (202) which senses the capacity of the battery (206) through a capacity resistor (224) at a capacity sense terminal (244). The charger (202) also senses the radio current through the same capacity sense terminal (244) using a current sensing device (226). Charger (202) continuously compensates for the current drain presented by the radio (204).

REFERENCES:
patent: 4006396 (1977-02-01), Bogut
patent: 5164652 (1992-11-01), Johnson et al.
patent: 5191277 (1993-03-01), Ishikura et al.
patent: 5200686 (1993-04-01), Lee
patent: 5325040 (1994-06-01), Bogut et al.
patent: 5411816 (1995-05-01), Patino
patent: 5493199 (1996-02-01), Koenck et al.

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