Patent ID: 6784638
Filing Date: 2004-08-31
Classification: H02J

Abstract:
A series charger with separate detection of batteries comprising:a charging control device having an exchange power unit for converting the inputted AC power into DC power so as to charging four batteries in series connection, said charging control device further providing a reference voltage source to a control IC which is connected with a current detector for measuring the current value of said batteries; and each of said series-connected batteries being parallel-connected with a switch element, a one-way diode being interposed between the positive end of said batteries and each of said switch elements, wherein said control IC provides âˆ’&Dgr;V to the positive terminal of the respective charging circuit of said batteries for detecting the end-point voltage thereof; wherein, when each of said batteries is fully charged, the respective switch element is switched in a close circuit so that the charging current continues to flow downward for further charging operation; wherein, after all batteries are fully charged one after another, said current detector is used to regulate the charging current or the switch-on time of said switch elements is controlled for proceeding with supplementary charging operation; and wherein the power switch is shut off for stopping the charging operation after the supplementary charging operation is completed.