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. 22, 1996
Filed:
Dec. 09, 1994
Min Sway-Tin, Troy, MI (US);
Thaddeus Roterman, Shelby Township, Macomb County, MI (US);
Joseph F Impullitti, Farmington Hills, MI (US);
David S Meir, West Bloomfield, MI (US);
Ronald A Zawacki, Canton, MI (US);
Chrysler Corporation, Auburn Hills, MI (US);
Abstract
A system (10) and method for monitoring usage of current immediately available from the traction batteries (12) of an electric vehicle includes a means (18) for generating a signal representative of the current being drawn from the batteries (12); a means (20) for generating a signal representative of the maximum current available from the batteries (12) for immediate use; and a means (22) responsive to the drawn-current signal and the maximum-available-current signal for generating a usage signal representing the ratio of drawn current to maximum-available current. A display, such as an analog meter (24) responsive to the usage signal and calibrated from zero-percent to one-hundred-percent available current usage, displays the transitory current usage as a percentage of maximum-available current. Where the batteries (12) supply current to both the vehicle's traction motors (14) and noncritical electrical components (16), a relay (28) responsive to the usage signal sheds the noncritical component's load from the batteries (12) when current usage rises above a given level. A current limiter (30) responsive to the usage signal is preferably also provided to limit the supply of current to the traction motors (14) when current usage rises above a still higher level.