Electric vehicle charging scheduling system

摘要

A charging prediction database stores information on electric vehicles expected to arrive for charging. A profile/charging information database stores information on electric vehicles that have arrived and been waiting for charging. A power database stores information on a power source including at least one of a power grid and a stationary battery. An energy calculating unit calculates energy available from the power source based on the power database. A scheduling unit schedule charging of the electric vehicles waiting for charging in consideration of the electric vehicles expected to arrive.

主权项

1. An electric vehicle charging scheduling system, comprising:
a charging prediction database configured to store information about electric vehicles including at least the number of electric vehicles expected to arrive for charging; a profile/charging information database comprising information regarding at least batter capacity, maximum charging voltage, maximum charging current, charging efficiency, or maximum number of charging and discharging cycles of the electric vehicles each of which have been waiting for charging or the one that are being charged; a power database configured to store information about a power source including at least a power grid and a stationary battery; an energy calculating unit configured to calculate electric energy that can be supplied to the waiting electric vehicles and that is available from the power source based on the power database; and a scheduling unit configured to calculate the dynamically changing charging amount that can be supplied to each of the waiting electric vehicles and schedule charging of the electric vehicles waiting for charging, wherein the scheduling unit:
calculates available average energy by dividing electric energy, that can be supplied to the waiting electric vehicles and that is available from the power source, by the total number of the expected electric vehicles and the electric vehicles waiting for charging,calculates required charging energy being energy required to charge each of the electric vehicles waiting for charging based on the profile/charging information database including current battery residual of each of the electric vehicles waiting for charging,determines the first group of waiting electric vehicles each of whose required charging energy is equal to or smaller than the available average energy, calculates the difference between the available average energy and the required charging energy for each of the first group of waiting electric vehicles, and determines charging energy to be supplied for each of the first group of waiting electric vehicles to the required charging energy,determines the second group of waiting electric vehicles each of whose required charging energy is larger than the available average energy, calculates the proportionally distributed energy by distributing the total sum of differences between available average energy and the required charging energy of each of the first group of waiting electric vehicles among the second group of waiting electric vehicles in proportion to magnitudes of differences between the available average energy and the required charging energy of each of the second group of waiting electric vehicles and calculates the charging energy to be supplied for each of the second group of waiting electric vehicles by summing the proportionally distributed energy and the available average energy, andmakes a charging schedule so that the first group of waiting electric vehicles and the second group of waiting electric vehicles are respectively supplied with charging energies determined for the first group of waiting electric vehicles and calculated for the second group of waiting electric vehicles.