Grid connected solar battery charging device for home and vehicle energy management

摘要

A battery electric vehicle charging station is disclosed, having grid and vehicle connections with a DC charger and controller that selectively charges the vehicle battery directly with DC power in a first mode and converts DC power from the vehicle battery to drive an inverter in a second mode to provide AC power to a power grid.

主权项

1. A charging station for a plug-in electric vehicle (PEV), comprising:
an inverter including an inverter DC input operative to receive DC input power and an inverter AC output operative to provide AC output power to an AC power grid, the inverter being operable to convert the DC input power to the AC output power; a DC charger separate from the PEV, including:
a charger DC input operative to receive power from at least one solar DC power source separate from the PEV,a DC vehicle battery interface coupleable to a PEV DC battery connection, anda DC charger output coupled to the inverter DC input to provide DC output power to the inverter,the DC charger being operative in a first mode to provide power from the charger DC input to a vehicle battery interface for direct DC charging of the vehicle battery without AC conversion and in a second mode to provide power from the vehicle battery interface to the charger DC output without AC conversion; and a controller operatively coupled with the DC charger to selectively switch the DC charger from the first mode to the second mode, wherein the controller is operable to receive an indicator from an external information source and to selectively switch the mode of the DC charger between the first and second modes based at least partially on the indicator, and wherein the indicator includes a grid status, where the controller selectively switches the charger to the second mode if the grid status is unstable.