The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2009
Filed:
Apr. 17, 2007
Mutasim A. Salman, Rochester Hills, MI (US);
Nick S. Kapsokavathis, Shelby Township, MI (US);
Xiaodong Zhang, Madison Heights, MI (US);
David W. Walters, Sterling Heights, MI (US);
Xidong Tang, Sterling Heights, MI (US);
Mutasim A. Salman, Rochester Hills, MI (US);
Nick S. Kapsokavathis, Shelby Township, MI (US);
Xiaodong Zhang, Madison Heights, MI (US);
David W. Walters, Sterling Heights, MI (US);
Xidong Tang, Sterling Heights, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
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.