Patent ID: 6384559
Filing Date: 2002-05-07
Classification: B60K,B60L,Y02T,Y10S

Abstract:
An electric power equipment for supplying a rotary electric machine with higher voltage power and electric loads with lower voltage power, said electric power equipment comprising:a main battery; an auxiliary battery; an inverter, connected between said rotary electric machine and said main battery, for supplying said rotary electric machine a prescribed lower-frequency AC power from said main battery and said main battery with DC power from said rotary electric machine; and a main-to-auxiliary battery-power supply circuit, connected between said rotary electric machine and said auxiliary battery, for supplying electric power to said auxiliary battery when the terminal voltage of said auxiliary battery is lower than a reference voltage; wherein said main-to-auxiliary power supply circuit comprises: a frequency filter, connected to said rotary electric machine, for passing only AC power of a prescribed higher frequency that is too high for said rotary electric machine to be operated, a rectifier connected between said frequency filter and said auxiliary battery and a controller for controlling said inverter to provide said AC power of said higher frequency when the terminal voltage of said auxiliary battery is lower than a reference voltage.