Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1994-11-18
1996-07-16
Wieder, Kenneth A.
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
324426, 324427, 324437, 324654, 324234, 429 10, 429 91, 429 93, G01N 27416
Patent
active
055370420
ABSTRACT:
Disclosed is a method and system for unobtrusively measuring physical properties in electrochemical processes occurring in a predefined volume, such as the state of charge in an electrochemical battery. The invention provides for a coil (22) or (42) positioned relative to the predefined volume to minimize the reluctance path between the coil and the electrochemical process, with the winding axis of the coil generally transverse to a surface bounding the predefined volume. In this position, an alternating current is applied to the coil to generate an oscillatory magnetic field. Preferably, the coil includes a core (24) or a backing plate (46) for concentrating the magnetic field in a direction towards the process in the predefined volume. The physical properties are determined based upon a measurement of the electrical complex impedance of the coil, and data correlating the physical properties of the process with the electrical complex impedance of the coil.
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Beutler Jon F.
Burreson Bernard J.
Flagg, Jr. Delbert F.
Green Jeffrey J.
Kromholtz Gregory A.
Brown Glenn W.
ELDEC Corporation
Wieder Kenneth A.
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