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:
May. 07, 2013
Filed:
May. 22, 2009
Dusan Veselic, Oakville, CA;
Dusan Veselic, Oakville, CA;
Research In Motion Limited, Waterloo, Ontario, CA;
Abstract
A battery charger for charging a plurality of batteries includes a plurality of charge managers and a cross-over controller coupled to the charge managers. The charge managers are coupled to a common power source that has a finite maximum available current. The cross-over controller is configured to continuously determine the charge current that is applied to one of the batteries by one of the charge managers, and to direct another one of the charge managers to apply to another one of the batteries a charge current that is based on the determined charge current. The total of the determined charge current that is applied to the one battery and the charge current that is applied to the other battery (prior to when the voltage across the other battery reaches a rated value) is continuously substantially equal to the maximum available current.