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Electronic circuit for measuring series connected electrochemical cell voltages

United States Patent

December 26, 2000
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
An electronic circuit for measuring voltage signals in an energy storage device is disclosed. The electronic circuit includes a plurality of energy storage cells forming the energy storage device. A voltage divider circuit is connected to at least one of the energy storage cells. A current regulating circuit is provided for regulating the current through the voltage divider circuit. A voltage measurement node is associated with the voltage divider circuit for producing a voltage signal which is proportional to the voltage across the energy storage cell.
Ashtiani; Cyrus N. (West Bloomfield, MI), Stuart; Thomas A. (Toledo, OH)
DaimlerChrysler Corporation (Auburn Hills, MI), University of Toledo (Toledo, OH)
09/ 224,466
December 31, 1998
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under NREL subcontract number ZAN-6-16334-01, prime contract number DE-AC36-83CH10093 issued by the Department of Energy. The government has certain rights in this invention.