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:
Jan. 29, 2013
Filed:
Oct. 25, 2011
Andrew D. Shiner, Whitby, CA;
Carl D. Schaaff, Guelph, CA;
Richard C. Madter, Puslinch, CA;
Roshy Stan Mathew, Waterloo, CA;
Michael F. Habicher, Toronto, CA;
Quang A. Luong, Mississauga, CA;
Andrew D. Shiner, Whitby, CA;
Carl D. Schaaff, Guelph, CA;
Richard C. Madter, Puslinch, CA;
Roshy Stan Mathew, Waterloo, CA;
Michael F. Habicher, Toronto, CA;
Quang A. Luong, Mississauga, CA;
Research In Motion Limited, Waterloo, CA;
Abstract
An over-voltage protection circuit is disclosed herein for protection against over-voltage of an energy storage device while charging. The circuit operates within the operational limits of a battery-operated device, such as a mobile or handheld device. The over-voltage protection circuit comprises an over-voltage protection device, and an over-voltage protection controller. The controller allows current to flow to the over-voltage protection device only when an energy storage device is experiencing over-voltage. In allowing current to flow to the over-voltage protection device only when the voltage across the energy storage device is above a predetermined voltage, power conservation is achieved.