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:
Jul. 31, 2001
Filed:
Feb. 26, 1999
Iilonga P. Thandiwe, Atlanta, GA (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method for testing safety circuitry in rechargeable battery packs is provided herein by which the operation and integrity of circuits associated with rechargeable cells may be verified. A controller,senses current flow during cell,charge or discharge. The controller,then activates the safety circuitry and once again senses current to ensure high circuit impedance. If a fault is detected, the controller,notifies the user or host device. The controller,then decides if the fault warrants isolating the cell,from the terminals of the battery pack,If such action is warranted, the controller,clears the current carrying path,creating a fail condition that does not endanger the user or associated equipment.