Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1994-10-21
1996-01-30
Wieder, Kenneth A.
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
324439, 324459, 204406, 204DIG9, 205789, 2057945, G01N 27416
Patent
active
054883008
ABSTRACT:
A method of monitoring ion mobility in an electro-conductive fluid, such as an electrolyte in a lead-acid battery to determine the state of charge of the battery, includes the steps of immersing a pair of test electrodes in the electro-conductive fluid, and generating a test signal having a pulsed waveform. The pulsed waveform of the test signal has a voltage which remains constant over a predetermined portion of the signal's period, that portion being selected to ensure that ion mobility in the electro-conductive fluid has reached a steady state velocity. The method further includes the steps of applying the test signal to the pair of test electrodes to cause a current to flow through the test electrodes and the electro-conductive fluid, and sensing the current flow through the test electrodes and fluid. The sensed current is indicative of ion mobility in the electro-conductive fluid.
REFERENCES:
patent: 3684950 (1972-08-01), Nilsson
patent: 3787754 (1974-01-01), Seabase
patent: 4129824 (1978-12-01), Howes
patent: 4506226 (1985-03-01), Luce et al.
Do Diep
Wieder Kenneth A.
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