Battery remaining capacity measuring apparatus

Details Battery remaining capacity measuring apparatus Battery remaining capacity measuring apparatus

1996-08-30

1998-04-28

Tso, Edward

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 48, 324428, H01M 1046

Patent

active

057449317

ABSTRACT:
A remaining capacity operation portion 19 provides an approximate linear function (I=aV+b) having a voltage-current characteristic by a method of least squares according to an open circuit voltage when a load 1 is disconnected to a battery 3, a closed circuit voltage when a battery 3 is connected to a load 1 which is detected for every predetermined time and a current passing through a load, where a reference value (I<0) is substituted in this approximate linear function, which a display portion 27 displays as an remaining capacity voltage.

REFERENCES:
patent: 4849700 (1989-07-01), Morioka et al.
patent: 5391193 (1995-02-01), Thompson
patent: 5617324 (1997-04-01), Arai

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