Electric power supply system

摘要

An alternating-current power line is wired in a building for supplying alternating-current electricity to an electric load. A bidirectional power converter converts bilaterally between alternating-current electricity and direct-current electricity. A power storage unit is connected to the alternating-current power line through the bidirectional power converter. The power storage unit is charged with electricity from the alternating-current power line and discharges direct-current electricity into the alternating-current power line. A charge-and-discharge unit charges a vehicular power accumulating device with alternating-current electricity supplied from the alternating-current power line through a connecting terminal and discharges electricity outputted as alternating-current electricity from the vehicle to the connecting terminal. A power converter converts alternating-current electricity outputted from the vehicle through the connecting terminal into direct-current electricity and discharges the converted direct-current electricity through the bidirectional power converter into the alternating-current power line.

主权项

1. An electric power supply system comprising:
a first alternating-current power line wired in a building and connected to an electric load for supplying alternating-current electricity to the electric load; a bidirectional power converter configured to convert bilaterally between alternating-current electricity and direct-current electricity; a power storage unit connected to the first alternating-current power line through the bidirectional power converter and configured to
be charged with electricity from the first alternating-current power line anddischarge direct-current electricity stored in the power storage unit into the first alternating-current power line; a charge-and-discharge unit equipped with a connecting terminal portion connectable with a vehicle and configured to
charge a vehicular power accumulating device equipped in the vehicle with alternating-current electricity supplied from the first alternating-current power line through the connecting terminal portion to the vehicle anddischarge electricity of the vehicular power accumulating device outputted as alternating-current electricity from the vehicle to the connecting terminal portion: a second alternating-current power line configured to electrically connect the power storage unit with the vehicular power accumulating device; and a direct-current power line configured to electrically connect the power storage unit to the vehicular power accumulating device, wherein: the charge-and-discharge unit includes a power converter configured to:
convert alternating-current electricity outputted from the vehicle through the connecting terminal portion into direct-current electricity anddischarge direct-current electricity converted with the power converter through the bidirectional power converter into the first alternating-current power line, the power converter of the charge-and-discharge unit is directly connected between both the power storage unit and the bidirectional power converter, and the power converter of the charge-and-discharge unit is connected to the second alternating-current power line and is configured to only convert alternating-current electricity to direct-current electricity.