Electricity: motive power systems – Battery-fed motor systems
Reexamination Certificate
2007-04-17
2009-06-09
Masih, Karen (Department: 2837)
Electricity: motive power systems
Battery-fed motor systems
C388S806000
Reexamination Certificate
active
07545109
ABSTRACT:
A method and article of manufacture for monitoring an electrical energy storage device adapted to supply electrical power to a selectively actuable electric motor is described. This comprises determining a state of charge and a temperature of the electrical energy storage device subsequent to a stabilization period, and measuring a minimum voltage output from the electrical energy storage device during selective actuation of the electric motor. One of a plurality of predetermined threshold voltage states is selected based upon the state of charge and the temperature. The minimum voltage is compared to the selected predetermined threshold voltage.
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Kapsokavathis Nick S.
Salman Mutasim A.
Tang Xidong
Walters David W.
Zhang Xiaodong
GM Global Technology Operations Inc.
Masih Karen
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