Patent ID: 8543271
Filing Date: 2013-09-24
Classification: B60K,B60L,B60W,B60Y,H02P,Y02T

Abstract:
1. A power supply system for an electrically powered vehicle incorporating a motor for generating power to drive the vehicle, comprising: a main power storage device; an electric power feeding line configured to feed electric power to an inverter for driving and controlling said motor; a first voltage converter provided between said electric power feeding line and said main power storage device, and configured to convert voltage therebetween bidirectionally; a plurality of sub power storage devices provided in parallel to each other; a second voltage converter provided between said plurality of sub power storage devices and said electric power feeding line, and configured to convert voltage between one of said plurality of sub power storage devices and said electric power feeding line bidirectionally; a connection unit provided between said plurality of sub power storage devices and said second voltage converter, and configured to selectively connect a sub power storage device selected from said plurality of sub power storage devices to said second voltage converter; and a switching control device for controlling selective connection between said plurality of sub power storage devices and said second voltage converter, said switching control device including