US 12,311,799 B2
Charging control of a fleet
Johannes Brombach, Berlin (DE); and Aram Sander, Berlin (DE)
Assigned to Wobben Properties GmbH, Aurich (DE)
Filed by Wobben Properties GmbH, Aurich (DE)
Filed on Apr. 23, 2021, as Appl. No. 17/239,296.
Claims priority of application No. 20171801 (EP), filed on Apr. 28, 2020.
Prior Publication US 2021/0331603 A1, Oct. 28, 2021
Int. Cl. B60L 58/13 (2019.01); B60L 53/31 (2019.01); B60L 53/63 (2019.01); B60L 53/66 (2019.01); G08G 1/00 (2006.01)
CPC B60L 58/13 (2019.02) [B60L 53/31 (2019.02); B60L 53/63 (2019.02); B60L 53/66 (2019.02); G08G 1/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for providing electric exchange power for a plurality of electric vehicles of a fleet of electric vehicles for feeding into an electricity supply grid or drawing from the electricity supply grid by way of a charging infrastructure of the fleet, wherein the electric exchange power comprises:
a positive exchange power that denotes an electric power drawn from the electricity supply grid by the fleet; and
a negative exchange power that denotes an electric power fed into the electricity supply grid by the fleet; and wherein:
each electric vehicle has an electrical storage unit having a changeable state of charge, and
a sum of the changeable states of charge of the electric vehicles of the fleet forms a changeable sum state of charge, the method comprising:
determining a state of charge range for a provision period, wherein the state of charge range spans an operating range that contains a sum state of charge, wherein the state of charge range is delimited by:
a time-dependent upper limit that specifies maximum values not to be exceeded for the sum state of charge in a time-dependent manner, and
a time-dependent lower limit that specifies minimum values not to be dropped below for the sum state of charge in a time-dependent manner,
determining the state of charge range is based on the states of charge of the plurality of electric vehicles,
controlling the electric exchange power, for feeding into the electricity supply grid and drawing from the electricity supply grid, in the provision period such that the sum state of charge does not leave the state of charge range,
forecasting a starting charging point of the state of charge range by determining a starting state of charge of the sum state of charge at a starting time,
wherein the starting state of charge is forecast at the starting time, and/or
wherein the starting time is forecast, such that:
 all of the plurality of electric vehicles have reached the charging infrastructure,
 a predetermined portion of the plurality of electric vehicles has reached the charging infrastructure,
 a number of electric vehicles of the plurality of electric vehicles have reached the charging infrastructure such that a sum of their states of charge has reached a specified minimum starting value of the sum state of charge, and/or
 a number of electric vehicles of the plurality of electric vehicles have reached the charging infrastructure that a sum of their storage capacities has a specified minimum storage capacity,
assigning an expected probability to the forecast starting charging point of the state of charge range, and
assigning an expected probability in each case to the forecast starting time, wherein:
deviations between a forecast starting state of charge and a recorded sum state of charge are corrected, and
a value of the starting charging point of the state of charge range for a predetermined availability is forecast as an availability value.