Method and apparatus to control an off-board charging device
First Claim
1. A method for controlling an off-board charging device disposed to electrically charge an electric energy storage system via an electrical charging system on-board a vehicle, wherein an electric machine is electrically connected to the electric energy storage system and is disposed to supply propulsion effort, the method comprising:
- monitoring, via a sensor, current supplied to the electric machine during a drive cycle occurring prior to a charging event;
determining a severity of the drive cycle occurring prior to the charging event for the electric energy storage system based upon the monitored current;
determining a charging profile based upon the severity of the drive cycle; and
commanding, via the controller, operation of the off-board charging device when the vehicle is stationary based upon the charging profile;
wherein determining the charging profile based upon the severity of the drive cycle includes;
determining vehicle on-time,monitoring a temperature of a component of the electrical charging system and an ambient temperature,determining a modified vehicle on-time based upon the component temperature, the severity of the drive cycle, and the vehicle on-time,determining vehicle off-time, anddetermining a charging profile based upon the modified vehicle on-time, the vehicle off-time and the ambient temperature.
1 Assignment
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Accused Products
Abstract
An off-board charging device disposed to electrically charge an electric energy storage system via an electrical charging system on-board a vehicle is described. This includes an electric machine electrically connected to the electric energy storage system and is disposed to supply propulsion effort to the vehicle. A method for controlling the off-board charging device includes determining severity of a drive cycle that occurs prior to a charging event for the electric energy storage system. A charging profile is determined based upon the severity of the drive cycle. A controller commands operation of the off-board charging device based upon the charging profile.
15 Citations
17 Claims
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1. A method for controlling an off-board charging device disposed to electrically charge an electric energy storage system via an electrical charging system on-board a vehicle, wherein an electric machine is electrically connected to the electric energy storage system and is disposed to supply propulsion effort, the method comprising:
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monitoring, via a sensor, current supplied to the electric machine during a drive cycle occurring prior to a charging event; determining a severity of the drive cycle occurring prior to the charging event for the electric energy storage system based upon the monitored current; determining a charging profile based upon the severity of the drive cycle; and commanding, via the controller, operation of the off-board charging device when the vehicle is stationary based upon the charging profile;
wherein determining the charging profile based upon the severity of the drive cycle includes;determining vehicle on-time, monitoring a temperature of a component of the electrical charging system and an ambient temperature, determining a modified vehicle on-time based upon the component temperature, the severity of the drive cycle, and the vehicle on-time, determining vehicle off-time, and determining a charging profile based upon the modified vehicle on-time, the vehicle off-time and the ambient temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 16)
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8. A method for controlling an off-board charging device disposed to electrically charge an electric energy storage system via an electrical charging system on-board a vehicle, wherein an electric machine is electrically connected to the electric energy storage system and is disposed to supply propulsion effort, the method comprising:
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monitoring, via a sensor, current supplied to the electric machine during a drive cycle occurring prior to a charging event; determining severity of the drive cycle occurring prior to the charging event for the electric energy storage system based upon the monitored current; monitoring a temperature of a component of the electrical charging system during the drive cycle; determining a charging profile based upon the severity of the drive cycle and the temperature of the component of the electrical charging system during the drive cycle; and commanding, via the controller, operation of the off-board charging device when the vehicle is stationary based upon the charging profile;
wherein determining the charging profile includes;determining vehicle on-time, monitoring an ambient temperature, determining a modified vehicle on-time based upon the component temperature, the severity of the drive cycle and the vehicle on-time, determining vehicle off-time, and determining the charging profile based upon the modified vehicle on-time, the vehicle off-time and the ambient temperature. - View Dependent Claims (9)
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10. An electrical charging system for charging an on-board electric energy storage system of a vehicle via an off-board charging device, comprising:
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an electric machine electrically connected to the electric energy storage system and disposed to supply propulsion effort to the vehicle; a current sensor disposed to monitor current flow supplied to the electric machine; a controller, operatively connected to the off-board charging device and in communication with the electrical charging system, the on-board electric energy storage system, the current sensor and the electric machine; the controller including an instruction set, the instruction set executable to; monitor current supplied to the electric machine during a drive cycle occurring prior to a charging event; determine severity of the drive cycle occurring prior to the charging event for the electric energy storage system based upon the monitored current; determine a charging profile based upon the severity of the drive cycle; and command operation of the off-board charging device when the vehicle is stationary based upon the charging profile;
wherein the instruction set executable to determine the charging profile includes;determine vehicle on-time, monitor a temperature of a component of the electrical charging system and an ambient temperature, determine a modified vehicle on-time based upon the component temperature, the severity of the drive cycle, and the vehicle on-time, determine vehicle off-time, and determine the charging profile based upon the modified vehicle on-time, the vehicle off-time and the ambient temperature. - View Dependent Claims (11, 12, 13, 14, 15, 17)
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Specification