Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1993-10-07
1995-07-18
Wieder, Kenneth A.
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
340636, G01N 27416
Patent
active
054345081
ABSTRACT:
The residual energy of a battery can accurately be displayed in real time even in electronic equipment which has greatly variable current consumption. A calculator unit in a battery pack measures an electric current supplied from a battery in the battery pack to the main body of a notebook type personal computer. If the measured current value is within a preselected range, it is used to calculate the residual energy of the battery. If the measured current value is out of the preselected range, the present operational mode of the main computer body is determined by mode display data obtained from an operational mode control circuit in the main computer body. A preselected current consumption corresponding to the judged operational mode is read out of a mode table in the battery pack and is used to calculate the residual energy of the battery. The calculated residual power of the battery is supplied to the operational mode control circuit as residual energy data which may be displayed on a sub LCD in real time.
REFERENCES:
patent: 3971980 (1976-07-01), Jungfen et al.
patent: 5182655 (1993-01-01), Motoyanagi
patent: 5317269 (1994-05-01), Mills et al.
Sanyo Electric Co,. Ltd.
Tobin Christopher M.
Wieder Kenneth A.
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