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:
Oct. 23, 2018
Filed:
Nov. 24, 2015
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
David J. Mifsud, Novi, MI (US);
Daniel P. Grenn, Highland, MI (US);
Sara Safaeian, Commerce Township, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60L 11/18 (2006.01); G05B 15/02 (2006.01); H01H 47/02 (2006.01); H01H 47/00 (2006.01);
U.S. Cl.
CPC ...
B60L 11/18 (2013.01); G05B 15/02 (2013.01); H01H 47/002 (2013.01); H01H 47/02 (2013.01);
Abstract
Methods of controlling a contactor in a high voltage electrical circuit of a vehicle include delaying a contactor opening if a valid open command is not received, inhibiting closing of a contactor if a low voltage circuit voltage is not sufficient to close the contactor, and determining a fault in the opening of a contactor based on voltages sensed on the contacts of the contactor.