Patent ID: 6362603
Filing Date: 2002-03-26
Classification: H02J

Abstract:
A battery charging apparatus comprising a magneto AC generator, a rectifier circuit having input terminals connected to output terminals of said generator and output terminals to which a battery is connected, an output short circuit having on-off controllable switch elements and shorting said output terminals of said magneto AC generator when said switch elements are at an on state and a controller to control said switch elements of said output short circuit in accordance with a terminal voltage of said battery, said controller including a first switch control section to control said switch elements of said output short circuit to be turned on when an instantaneous value of said terminal voltage of said battery exceeds a first set value, an average voltage detection circuit to detect an average value of said terminal voltage of said battery, a second switch control section to control said switch elements of said output short circuit to be turned on when said average value of said terminal voltage of said battery exceeds a second set value and control change-over means to change controls by said first control section and said second control sections so that said switch elements are controlled by said second control section when an electric power is supplied from said battery to a load and so that said switch elements are controlled by said first control section when said load is cut from said battery.