Alternate fuel gauge for an alkali metal electrochemical cell

Details Alternate fuel gauge for an alkali metal electrochemical cell Alternate fuel gauge for an alkali metal electrochemical cell

2000-03-09

2000-12-26

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

320161, H01M 1044, H01M 1046

Patent

active

06166524&

ABSTRACT:
A "fuel gauge" for a pulse dischargeable alkali metal/solid cathode cell is described. The rate of voltage recovery is used to determine the state of charge of the cell. Voltage recovery includes recovery from one load to a second, lighter load, or a loaded condition to OCV. The present invention is particularly useful as an end-of-life indicator for a Li/CF.sub.x cell powering an implantable medical device.

REFERENCES:
patent: 4556061 (1985-12-01), Barreras et al.
patent: 4607932 (1986-08-01), Egawa et al.
patent: 5144218 (1992-09-01), Bosscha
patent: 5284719 (1994-02-01), Landau et al.
patent: 5357203 (1994-10-01), Landau et al.

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