Interactive battery charger for electric vehicle
First Claim
Patent Images
1. A method for recharging an electric storage battery of a vehicle powered at least in part by electric energy from an electric utility power grid, the method comprising the steps of:
- (a) determining a magnitude of electric energy required to recharge the battery to a desired state of charge;
(b) determining a maximum time rate at which the battery can be recharged; and
(c) using information from steps (a) and (b) to determine a length of time required to recharge the battery;
(d) determining a desired time when the recharge is to be completed;
(e) transmitting information from steps (c) and (d) to the electric power utility;
(f) recharging the battery from the utility grid during a period when projected load demand is lower than peak demand and ending no later than the desired time.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for recharging an electric storage battery in the charging system of an electric vehicle from an electric utility power grid includes determining the length of time required to recharge the battery, determining the desired time when the recharge is to be completed, transmitting to the electric power utility the length of time required to recharge the battery and the desired time, and recharging the battery from the utility grid during a period when projected load demand is lower than peak demand and ending no later than the desired time.
-
Citations
18 Claims
-
1. A method for recharging an electric storage battery of a vehicle powered at least in part by electric energy from an electric utility power grid, the method comprising the steps of:
-
(a) determining a magnitude of electric energy required to recharge the battery to a desired state of charge; (b) determining a maximum time rate at which the battery can be recharged; and (c) using information from steps (a) and (b) to determine a length of time required to recharge the battery; (d) determining a desired time when the recharge is to be completed; (e) transmitting information from steps (c) and (d) to the electric power utility; (f) recharging the battery from the utility grid during a period when projected load demand is lower than peak demand and ending no later than the desired time. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A system for recharging an electric storage battery of a vehicle powered at least in part by electric energy, comprising
an electric power utility that controls the supply of electric power; -
a power grid on which electric power is transmitted; a charger electrically connected to the power grid and the battery; a controller electrically connected to the charger and the battery and communicating with the electric power utility, the controller determining the length of time required to recharge the battery, determining the desired time when the recharge is to be completed, transmitting to the electric utility the duration of the recharge and the desired time;
determining a magnitude of electric energy required to recharge the battery to a desired state of charge;
determining a maximum time rate at which the battery can be charged;
using the magnitude of electric energy required to recharge the battery and the maximum time rate to calculate the length of time required to recharge the battery; and
communicating to the electric rower utility the length of time required to recharge the battery. - View Dependent Claims (8, 9)
-
-
10. A system for recharging an electric storage battery of a vehicle powered at least in part by electric energy, comprising
an electric power utility that controls the supply of electric power; -
a power grid on which electric power is transmitted; a charger electrically connected to the power grid and the battery; a plug-in hybrid electric vehicle including a controller electrically connected to the charger and the battery and communicating with the electric power utility, the controller determining the length of time required to recharge the battery, determining the desired time when the recharge is to be completed, transmitting to the electric utility the duration of the recharge and the desired time, determining the magnitude of electric energy required to recharge the battery to a desired state of charge;
determining the maximum time rate at which the battery can be charged;
using the magnitude of electric energy required to recharge the battery and the maximum time rate to calculate the length of time required to recharge the battery; and
communicating to the electric power utility the length of time required to recharge the battery. - View Dependent Claims (11, 12)
-
-
13. A method for recharging an electric storage battery of a plug-in hybrid electric vehicle powered at least in part by electric energy from an electric utility power grid, the method comprising the steps of:
-
(a) determining a length of time required to recharge the battery; (b) determining a desired time when the recharge is to be completed; (c) transmitting information from steps (a) and (b) to the electric power utility; and (d) recharging the battery from the utility grid during a period when projected load demand is lower than peak demand and ending no later than the desired time; determining the time rate of energy to be drawn from the grid during the recharge; and transmitting from the electric rower utility to the vehicle charging system a schedule of the electric charging rate for the recharge. - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification