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. 26, 2007
Filed:
Sep. 19, 2003
Mukunda V. Prema, Canton, MI (US);
Shailesh S. Kozarekar, Novi, MI (US);
Christopher A. Ochocinski, Canton, MI (US);
Robert K. Taenaka, Plymouth, MI (US);
Vincent Freyermuth, Ypsilanti, MI (US);
Douglas Zhu, Canton, MI (US);
Mukunda V. Prema, Canton, MI (US);
Shailesh S. Kozarekar, Novi, MI (US);
Christopher A. Ochocinski, Canton, MI (US);
Robert K. Taenaka, Plymouth, MI (US);
Vincent Freyermuth, Ypsilanti, MI (US);
Douglas Zhu, Canton, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method for heating a battery in a hybrid electric vehicle. The hybrid electric vehicle has an engine, a battery, a motor generator powered by the engine or the battery, and a control module. The method includes the steps of determining a battery temperature and determining whether a tip-in event, a tip-out event, or a terminal voltage event has occurred. The polarity of the battery is reversed if the battery temperature is below a predetermined value and if a tip-in event, a tip-out event, or a terminal voltage event has occurred.