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:
Apr. 27, 1999
Filed:
Jun. 09, 1997
Applicant:
Inventors:
Joseph Patino, Pembroke Pines, FL (US);
Robert B Ford, Tamarac, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
320148 ; 320161 ;
Abstract
By monitoring both charge current and the battery voltage (306, 308) the likelihood of overcharging a battery is reduced. Battery voltage is compared to a predetermined limit (310) and the battery goes into trickle charge if the predetermined limit is exceeded (312), but now by also determining if a positive delta in charge current has occurred (314), the charger can trickle charge the battery (312) even if the cutoff voltage is never exceeded.