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:
Sep. 30, 1997
Filed:
Dec. 22, 1995
Hee-Deog Kim, Seoul, KR;
SamSung Electronics Co., Ltd., Suwon, KR;
Abstract
A charging device and control method for preventing recharging of a fully charged battery. The charging device for a rechargeable battery includes a power unit for outputting a constant voltage of a given level, irrespective of the current output therefrom a battery pack into which the battery is inserted, and a switch for supplying the battery with the constant voltage output from the power unit through the battery pack in response to a switch control signal, and a control unit. The control unit includes a battery voltage sensing unit for sensing a battery voltage every given period of time, a comparing unit for comparing a preset full charge threshold voltage with an output of the battery voltage sensing unit and outputting a signal, and an input/output unit responsive to the signal output by the comparing unit, for driving the switch and turning on the charging of the battery in the event that the sensed battery voltage is less than the full charge threshold voltage, or for driving the switch and turning off the charging of the battery in the event that the sensed battery voltage is more than the full charge threshold voltage.