Patent ID: 8089177
Filing Date: 2012-01-03
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A power supply system capable of supplying and receiving electric power to and from a load device, comprising: a power line through which electric power is supplied and received between the power supply system and the load device; first converter and second converter connected in parallel with each other to the power line; a first storage device that is rechargeable and is connected to the first converter; a plurality of second storage devices that are rechargeable; a switching device provided between said plurality of second storage devices and the second converter and capable of connecting one of said plurality of second storage devices to the second converter according to a given command; and a control device that controls the first and second converters and the switching device, wherein: the control device comprises: the discharge distribution ratio calculating unit calculates an amount of electric power that is allowed to be discharged from each of the first storage device and said plurality of second storage devices, and calculates the discharge distribution ratio, according to a ratio between the amount of electric power allowed to be discharged from the first storage device, and a sum of the amounts of electric power allowed to be discharged from said plurality of second storage devices; and wherein the charge distribution ratio calculating unit calculates an amount of electric power with which each of the first storage device and the second storage device connected to the second converter is allowed to be charged, and calculates the charge distribution ratio, according to a ratio between the amount of electric power with which the first storage device is allowed to be charged, and the amount of electric power with which the second storage device connected to the second converter is allowed to be charged.