Charging device providing a stable display of the residual charg

Details Charging device providing a stable display of the residual charg Charging device providing a stable display of the residual charg

1996-06-21

1998-02-10

Tso, Edward

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 43, 320 48, H01M 1046

Patent

active

057173125

ABSTRACT:
A control section periodically measures a battery voltage with the battery voltage measuring section when the portable electronic apparatus is used in a normal operation mode, updating a measurement value stored in the storage section only when a measurement value at a current point of time is smaller than a previous measurement value stored in the storage section, and periodically measures a battery voltage with the battery voltage measuring section during charging, updating a measurement value stored in the storing section only when a measurement value at the current point of time is larger than a previous measurement value stored in the storage section, and displaying a residual charge in the battery according to the updated measurement value in the storage section.

REFERENCES:
patent: 4560937 (1985-12-01), Finger
patent: 5119011 (1992-06-01), Lambert
patent: 5341084 (1994-08-01), Gotoh et al.
patent: 5479085 (1995-12-01), Honda et al.
patent: 5508600 (1996-04-01), Myslinski et al.

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