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:
Nov. 16, 2004
Filed:
Apr. 25, 2003
Joseph Patino, Pembroke Pines, FL (US);
Michael D. Geren, Suwanee, GA (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A protection circuit ( ) for use with a battery operated device ( ) which includes an over temperature detector ( ), a controller ( ), and a voltage divider circuit ( and ). The voltage divider circuit includes a multi-use thermistor ( ) for monitoring a temperature of a battery cell ( ), a battery charger, or a battery operated device. Further, the thermistor can be operatively connected to the over temperature detector. An input voltage at the input ( ) of the over temperature detector can vary relative to a variance in the monitored temperature. The temperature detector can signal the controller to terminate the charging of the battery cell if the temperature exceeds a predefined value. The device discharge detector can signal the controller to terminate the discharging of the battery cell if the battery operated device determines a specific event such as water intrusion, circuit failure or a software problem.