Electricity: measuring and testing – Electrolyte properties – Using a battery testing device
Patent
1993-10-05
1995-01-10
Regan, Maura K.
Electricity: measuring and testing
Electrolyte properties
Using a battery testing device
320 48, 340636, G01N 27416
Patent
active
053810961
ABSTRACT:
A method and apparatus for measuring the state-of-charge of a battery is provided, which includes a metering system to communicate the state-of-charge to an operator of a device powered by the battery. A digital electronic model is provided to compute the instantaneous charge in a storage battery that tracks the actual terminal voltage of the battery. In the digital model, the battery model is expressed as a computer program. The electronic model derives from the measurement of the actual terminal voltage of an operating battery an internal voltage corresponding to the open circuit voltage of the battery. This internal voltage, representative of the state-of-charge of the battery, is communicated to an operator through a display.
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Exhibit A is a copy of the Storage Battery Technical Service Manual published by the Battery Council International--Nov.--1987.
Exhibit B is an article by A. F. Burke, entitled Evaluation of State-Of-Charge Indicator Approaches for EVs--Feb. 1989.
Exhibit C is an article by Ronald G. Anderson, entitled Requirements for Improved Battery Design and Performance--Feb. 1990.
Exhibit D is a brochure for the Battery Watch II software program offered by AST Research, Inc.--Apr. 1991.
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