Patent ID: 6762595
Filing Date: 2004-07-13
Classification: B60R,G06F,H02J

Abstract:
A power distribution system comprising:an upper power distribution unit connected to a power supply unit through a high-voltage power line for receiving power supply of a high voltage from the power supply unit; a plurality of lower power distribution units connected to the upper power distribution unit through a plurality of intermediate-voltage power lines for receiving from the upper power distribution unit power supply of an intermediate voltage lower than the high voltage, converting the intermediate voltage to a load-use voltage lower than the intermediate voltage and supplying power to electric loads, respectively; a normal supplying converter provided in the upper power distribution unit for converting the high voltage to the intermediate voltage and supplying the power of the intermediate voltage to the plurality of intermediate-voltage power lines; a standby-current supplying converter connected in parallel to the normal supplying converter in the upper power distribution unit for converting the high voltage to the intermediate voltage and supplying the power of the intermediate voltage to one of the plurality of intermediate-voltage power lines; a controller provided in the upper power distribution unit for changing the driving between the normal supplying converter and the standby-current supplying converter; a master CPU provided in the lower power distribution unit to which power can be supplied from the standby-current supplying converter through the one of the plurality of intermediate-voltage power line, constituting at least a portion of the electric load; and at least one slave CPU provided in the lower power distribution units other than the lower power distribution unit having the master CPU, constituting at least portions of the electric loads, wherein the master CPU activates the normal supplying converter in accordance with a predetermined command signal inputted when power is supplied from the standby-current supplying converter to the lower power distribution unit having the master CPU, whereby power is supplied from the normal supplying converter to the plurality of lower power distribution units to drive the electric loads, respectively.