CHARGER OF BATTERY ASSEMBLY FOR ELECTRIC VEHICLE

摘要

PROBLEM TO BE SOLVED: To charge individual batteries of a battery pack for an electric vehicle uniformly by a method wherein a high frequency power is inputted to the primary winding of a high frequency transformer from a primary side converter and transformed into a plurality of voltages outputted from a plurality of secondary windings respectively and rectifiers are connected to the respective secondary windings and the battery pack is divided into blocks and the respective blocks are charged through the rectifiers. SOLUTION: A primary side converter 1 which is composed of a rectifier and a high frequency inverter converts an inputted commercial AC power into a DC power and then converts it into a high frequency power which is outputted. The high frequency power outputted from the primary side converter 1 is inputted to a high frequency transformer 2 and transformed and outputted from a plurality of secondary windings which are so provided as to be able to correspond to the number of divided blocks of a battery pack 4 and to which rectifiers 31 -3n are connected respectively. As the divided blocks 51 -5n of the battery assembly are individually charged, the variation in charging voltage of the battery can be eliminated and the batteries are charged uniformly.