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. 03, 2014
Filed:
Jan. 14, 2011
Suresh Gopalakrishnan, Farmington Hills, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Mark C. Hoinka, Southfield, MI (US);
Sanjeev M. Naik, Troy, MI (US);
Lei Hao, Troy, MI (US);
Suresh Gopalakrishnan, Farmington Hills, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Mark C. Hoinka, Southfield, MI (US);
Sanjeev M. Naik, Troy, MI (US);
Lei Hao, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An on-vehicle DC/DC converter transforms high-voltage electric power originating from an on-vehicle high-voltage source to low-voltage electric power at a regulated voltage level. The low-voltage electric power is distributed by a low-voltage bus. A method for operating the DC/DC converter includes monitoring a state of charge and a temperature of a low-voltage battery connected to the low-voltage bus, setting a DC/DC converter command to a nominal voltage level as a function of the state of charge and temperature of the low-voltage battery, monitoring a total low-voltage electric load, and adjusting the DC/DC converter command to a minimum low-voltage reference voltage when the vehicle is operating below a predetermined speed and the total low-voltage electric load is greater than a predetermined load.