Prioritization of electric vehicle power distribution
AssigneeFord Global Technologies, LLC
InventorsDavid Cox, Themi Petridis
Life of this patent
Estimating the term…
Abstract
A power management system for a vehicle includes a high voltage power source configured to provide power to vehicle subsystems, and at least one control module operably coupled to the high voltage power source and configured to receive power demand requests from the vehicle subsystems, and prioritize supply of power from the high voltage power source based on an assigned priority associated with each of the received power demand requests. The assigned priority may vary based on vehicle status.
Claims18
A power management system for a vehicle, the power management system comprising:
- a high voltage power source configured to provide power to vehicle subsystems;
- and
- at least one control module operably coupled to the high voltage power source and configured to:
- receive power demand requests from the vehicle subsystems, and
- prioritize supply of power from the high voltage power source based on an assigned priority associated with each of the received power demand requests,
- wherein the assigned priority varies based on vehicle status;
- wherein the power management system further comprises a plurality of loads associated with respective ones of the vehicle subsystems, and a communication bus to which the high voltage power source is operably coupled and via which requests for power from the high voltage power source are managed;
- wherein the assigned priority includes a priority designation associated with at least one of a closed loop subsystem, an open loop subsystem, a high voltage subsystem, and a low voltage subsystem;
- and
- wherein the assigned priority includes a primary prioritization order from highest to lowest rank comprising:
- low voltage subsystem critical loads, a high voltage subsystem emissions control load, low voltage subsystem non-critical loads, a high voltage subsystem external power source, and low voltage subsystem hybrid functions.
A control module for a power management system for a hybrid vehicle, the power management system comprising a high voltage power source configured to provide power to vehicle subsystems, the control module comprising processing circuitry configured to:
- receive power demand requests from respective ones of the vehicle subsystems, and
- prioritize supply of power from the high voltage power source based on an assigned priority associated with each of the received power demand requests,
- wherein the assigned priority includes a priority designation associated with at least one of a closed loop subsystem, an open loop subsystem, a high voltage subsystem, and a low voltage subsystem;
- wherein the assigned priority is changeable and includes a primary prioritization order from highest to lowest rank comprising:
- low voltage subsystem critical loads, a high voltage subsystem emissions control load, low voltage subsystem non-critical loads, a high voltage subsystem external power source, and low voltage subsystem hybrid functions.
Dependencies are inferred from the claim text.