Lem Heme Limited

Guardian Link Limited

Liaisons Electroniques-mecaniques Lem Sa

Nigel David Scott

Peter Wellstead

Steven Schooling

An apparatus for deriving data concerning the electro-chemical characteristics of a plurality of individual electro-chemical cells or corrosion processes is disclosed. In one aspect, the apparatus includes means for temporarily applying across a cell or a process a controlled multi-frequency electrical signal; means for detecting returned data resultant from said application, and means for utilizing the returned data with to resolve the data into at least three of its electro-chemical constituents, including a series metallic resistance, an electro-chemical resistance, and a double-layer capacitance.

Electro-chemical deterioration test method and apparatus

A portable instrument capable of evaluating the electro-chemical deterioration of an object under test such as a multi-cell valve regulated battery ( ) and comprising means capable of temporarily applying across a battery cell a controlled frequency electrical signal derived from an internal battery ( ) within the instrument, the signal being an oscillatory current or voltage controlled injected signal, further means for detecting returned data resultant from the signal application, and utilizing the data and a tailored mathematical algorithm in dedicated computer software to derive the data required. Such an instrument may be used to test battery systems of the type required for uninterruptible back-up power supplies in large industrial installations.

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Wilmslow, United Kingdom

Nigel David Scott