Patent ID: 6373223
Filing Date: 2002-04-16
Classification: H02J

Abstract:
A voltage equalizing apparatus comprising:a core; a plurality of first battery devices interconnected in series with each other; a plurality of secondary windings magnetically connected with each other through the core; a plurality of first switching devices; wherein a plurality of first closed circuits are formed, and each of the first closed circuits is formed by interconnected in series one of the first battery devices, one of the secondary windings and one of the first switching elements; a second battery device; a primary winding magnetically connected with the plurality of secondary windings through the core; and a second switching device connected in series with the second battery device and the primary winding to form a second closed circuit, wherein the plurality of first switching devices and the second switching device are alternately turned ON or OFF to equalize the output voltages of the plurality of first battery devices; when the second switching device is turned on, exciting energy stored in the core is transported to the plurality of first battery devices through the plurality of first switching elements; and the plurality of first switching devices continue to be turned ON after the transportion of the exciting energy is completed.