Patent ID: 9172252
Filing Date: 2015-10-27
Classification: B60L,H02J,Y02T

Abstract:
1. A power supply apparatus for an electrically powered vehicle, comprising: a main power storage device for storing electric power input/output to/from an electric motor generating vehicular driving force; a subpower storage device having an output voltage lower than that of said main power storage device; a first power line connected to said subpower storage device, for supplying auxiliary electric power for operating an auxiliary load; a charging inlet for electrically contacting an external power supply; a second power line electrically connected to said charging inlet; a receptacle for extracting alternating current electric power from said second power line; a charger for performing bidirectional electric power conversion between the alternating current electric power on said second power line and direct current electric power input/output to/from said main power storage device; a first power converter for receiving the direct current electric power from said main power storage device to convert the received electric power into said auxiliary electric power for output to said first power line; a second power converter for receiving the alternate current electric power on said second power line to convert the received electric power into said auxiliary electric power for output to said first power line; and a control device for controlling said charger to convert the direct current electric power from said main power storage device into alternating current electric power for output to said second power line in a power generation mode allowing said receptacle to output alternating current electric power with said external power supply disconnected from said charging inlet, said control device controlling said first and second power converters to generate said auxiliary electric power in said power generation mode with a first mode and a second mode switched based on electric power used from said receptacle, said first mode allowing said first power converter to operate to generate said auxiliary electric power, said second mode allowing said second power converter to operate to generate said auxiliary electric power.