초록 ▼

An electric power equipment for a hybrid electric vehicle includes a main battery, an auxiliary battery, an inverter for supplying a prescribed lower-frequency AC power from the main battery to a motor-generator and DC power to the main battery from the rotary electric machine and an auxiliary batte

An electric power equipment for a hybrid electric vehicle includes a main battery, an auxiliary battery, an inverter for supplying a prescribed lower-frequency AC power from the main battery to a motor-generator and DC power to the main battery from the rotary electric machine and an auxiliary battery charging circuit. The auxiliary battery charging circuit includes a frequency filter for passing only AC power of a prescribed higher frequency that is too high for the motor-generator to be operated, a rectifier and a controller for controlling the inverter.

대표청구항 ▼

1. 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 batte

1. 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.