Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1976-10-26
1978-06-27
Rolinec, Rudolph V.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
204270, 320 48, G01N 2742
Patent
active
040978036
ABSTRACT:
Electrical leakage between electrodes in an electrochemical cell is determined by initially overcharging the cell to place it in a fully charged state. Various methods are available to ascertain a full charge, and a convenient method is disclosed in which the full charge is indicated by a predetermined rate of gassing at the electrodes. After receiving a full charge the cell is stored on open circuit for a time, during which some of the charge is dissipated due to leakage, and is then recharged to achieve an onset of gassing condition. The gas from the cell is conducted to a pressure vessel where it is filtered and slowly exhausted to the atmosphere while the pressure is monitored. An anomalous delay, relative to a reference cell, in achieving the onset of gassing condition indicates a cell leakage. The method and apparatus disclosed provides a convenient and considerably faster way than previously known to test for cell leakage.
REFERENCES:
patent: 3500167 (1970-03-01), Applegate et al.
patent: 3764508 (1973-10-01), Johnson, Jr.
Her Majesty the Queen as represented by the Minister of National
Rolinec Rudolph V.
Sakovich Michael M.
Tokar Michael J.
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