Battery residual capacity displaying system with discharged elec

Details Battery residual capacity displaying system with discharged elec Battery residual capacity displaying system with discharged elec

1993-10-25

1996-08-13

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 35, 320 39, 320 48, 324427, 340636, H01M 1048

Patent

active

055459692

ABSTRACT:
A system for displaying the residual capacity of a secondary battery so as to update the battery capacity when the battery discharges from its full charged condition to a predetermined voltage level, in which this predetermined voltage is selected to be sufficiently higher than the operation halting voltage of a portable electrical apparatus to be connected, and the quantity of electricity discharged until the predetermined voltage level is reached is suitably corrected to determine the newest battery capacity, so that the battery capacity can be accurately updated under the actual operating condition with a high frequency and high precision.

REFERENCES:
patent: 4377787 (1983-03-01), Kikuoka et al.
patent: 4390841 (1983-06-01), Martin et al.
patent: 4743831 (1988-05-01), Young
patent: 4949046 (1990-08-01), Seyfang
patent: 5047961 (1991-09-01), Simonsen

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