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. 18, 1999
Filed:
Oct. 24, 1997
Jose Maria Fernandez, Sunrise, FL (US);
Ronald Scot Coapstick, Plantation, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
In a charging system having a battery (104) with a high rate protection switch (120), and a charger (102) having a disable switch (221) that cooperates with a control switch transistor (224) to alternatively enable and disable the high rate protection switch, a method is employed by the charger to determine the presence or absence of the high rate protection circuit and apply an appropriate charge regime. The method includes applying a test current, then measuring the battery voltage while trying to disable the high rate protection circuit. If the voltage is sufficiently higher during such time, compared to normal operation, then the battery is charged at an ultrafast rate.