Patent ID: 8624426
Filing Date: 2014-01-07
Classification: B60K,B60L,B60W,H01M,Y02E,Y02T

Abstract:
1. A power supply system for an electrically powered vehicle incorporating a motor for generating power to drive the vehicle and an inverter for driving said motor, comprising: a main power storage device; an electric power feeding line for feeding electric power to said inverter; 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 a sub power storage device selected from 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 connect and disconnect the selected sub power storage device to and from said second voltage converter; and a control device configured to control connection and disconnection of said selected sub power storage device to and from said second voltage converter, said control device including