Priority based power management system and method for an electric vehicle

Patent metadata

Field	Value
Publication number	US-9694684-B2
Application number	US-201414559541-A
Country	US
Kind code	B2
Filing date	Dec 3, 2014
Priority date	Dec 3, 2014
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A method to provide priority based power management of off-board devices being power by a vehicle comprising: determining an operating mode of the vehicle, the operating mode being an electric operating mode or a fossil fuel operating mode; determining a current state of charge (SOC) of a battery pack of the vehicle; supplying power to the off-board devices when the current SOC of the battery pack is above a minimum threshold value when the vehicle is operating in the fossil fuel operating mode; prioritizing the off-board devices when the vehicle is operating in the electric operating mode; and powering the off-board devices based on a prioritization level of the off-board devices and the current SOC of the battery pack when the vehicle is operating in the electric operating mode.

First claim

What is claimed is:

1. A method implemented by a control module coupled to an electric motor and an internal combustion engine of a vehicle to provide priority based power management of off-board devices being power by the vehicle, comprising:
determining, via the control module, an operating mode of the vehicle, the operating mode being an electric operating mode or a fossil fuel operating mode;
determining, via the control module, a current state of charge (SOC) of a battery pack of the vehicle;
supplying power at a maximum load of each of the off board devices when the current SOC of the battery pack is above a predetermined threshold value when the vehicle is operating in the fossil fuel operating mode;
applying, via the control module, at least one priority to each of the off-board devices when the vehicle is operating in the electric operating mode;
when the current SOC of the battery pack is above the predetermined threshold value and the vehicle is operating in the electric operating mode, powering the off-board devices based on the priority of the off-board devices; and
when the current SOC of the battery pack falls below the predetermined threshold value and the vehicle is operating in the electric operating mode, removing power from individual off-board devices based on the priority of the off-board devices until the current SOC of the battery pack rises above the predetermined threshold value.

2. The method of claim 1 , comprising preventing powering of the off-board devices when the current SOC is below the predetermined threshold value and the vehicle is operating in the electric operating mode.

3. The method of claim 1 , comprising:
updating the priority for each of the off-board devices when the vehicle is operating in the fossil fuel operating mode; and
powering the off board devices based on the priority of the off-board devices and current SOC of the battery pack when the vehicle is operating in the fossil fuel operating mode.

4. The method of claim 3 , comprising powering individual off-board devices as the current SOC rises above predetermine threshold levels when the vehicle is operating in the fossil fuel operating mode.

5. The method of claim 1 , further comprising:
determining whether an off-board device is essential; and
when the off-board device is essential, assigning a higher priority to off-board device relative to a non-essential off-board device.

6. A system to provide priority based power management of off-board devices being powered by a vehicle comprising:
an electric motor;
a battery pack coupled to the electric motor;
an internal combustion engine (ICE) coupled to the battery pack;
a control module coupled to the electric motor and the ICE, the control module comprising:
at least one processor; and
a memory coupled to the processor, the memory storing program instructions that when executed by the processor, causes the processor to:
determine an operating mode of the vehicle, the operating mode being an electric operating mode or a fossil fuel operating mode;
determine a current state of charge (SOC) of the battery pack;
supply power at a maximum load of each of the off-board devices when the current SOC of the battery pack is above a predetermined threshold value when the vehicle is operating in the fossil fuel operating mode;
apply at least one priority to each of the off-board devices when the vehicle is operating in the electric operating mode;
when the current SOC of the battery pack is above the predetermined threshold value and the vehicle is operating in the electric operating mode, power the off-board devices based on the priority of the off-board devices; and
when the current SOC of the battery pack falls below the predetermined threshold value and the vehicle is operating in the electric operating mode, remove power from individual off-board devices based on the priority of the off-board devices until the current SOC of the battery pack rises above the predetermined threshold value.

7. The method of claim 1 , wherein the at least one priority of the off-board devices is inputted with a graphical user interface (GUI).

8. A system to provide priority based power management of off-board devices being powered by a vehicle comprising:
an electric motor;
a battery pack coupled to the electric motor;
an internal combustion engine (ICE) coupled to the battery pack;
a control module coupled to the electric motor and the ICE, the control module comprising:
at least one processor; and
a memory coupled to the processor, the memory storing program instructions that when executed by the processor, causes the processor to:
determine an operating mode of the vehicle, the operating mode being an electric operating mode or a fossil fuel operating mode;
determine a current state of charge (SOC) of the battery pack;
supply power at a maximum load of each of the off-board devices when the current SOC of the battery pack is above a predetermined threshold value when the vehicle is operating in the fossil fuel operating mode;
apply at least one priority to each of the off-board devices;
when the current SOC of the battery pack is above the predetermined threshold value and the vehicle is operating in the electric operating mode, power the off-board devices based on the priority of the off-board devices; and
when the current SOC of the battery pack falls below the predetermined threshold value and the vehicle is operating in the electric operating mode, remove power from individual off-board devices based on the priority of the off-board devices until the current SOC of the battery pack rises above the predetermined threshold value.

9. The system of claim 8 , wherein the memory storing program instructions that when executed by the processor, causes the processor to:
update the priority for each of the off-board devices when the vehicle is operating in the electric operating mode; and
power the off-board devices based on the priority of the off-board devices and the current SOC of the battery pack when the vehicle is operating in the electric operating mode.

10. The system of claim 9 , wherein the memory storing program instructions that when executed by the processor, causes the processor to prevent powering of the off-board devices when the current SOC is below the predetermined threshold value and the vehicle is in the electric operating mode.

11. The system of claim 9 , wherein the memory storing program instructions that when executed by the processor, causes the processor to: power individual off-board devices as the current SOC rises above predetermine threshold levels when the vehicle is operating in the fossil fuel operating mode.

12. The system of claim 9 , wherein the memory storing program instructions that when executed by the processor, causes the processor to:
update the priority for each of the off-board devices when the vehicle is operating in the fossil fuel operating mode; and
power the off-board devices based on the priority of the off-board devices and the current SOC of the battery pack when the vehicle is operating in the fossil fuel operating mode.

13. The system of claim 6 , wherein the memory storing program instructions that when executed by the processor, causes the processor to prevent powering of the off-board devices when the current SOC is below the predetermined threshold value and the vehicle is operating in the electric operating mode.

14. The system of claim 6 , wherein the memory storing program instructions that when executed by the processor, causes the processor to:
update the priority for each of the off-board devices when

Assignees

• Honda Motor Co Ltd

Inventors

• Enomoto Tomoyuki

Classifications

• Y02T10/6269

  Cross-Sectional Technologies · mapped topic

• B60W20/10

  Controlling the power contribution of each of the prime movers to meet required power demand · CPC title

• B60W10/06

  including control of combustion engines · CPC title

• B60W10/26

  for electrical energy, e.g. batteries or capacitors · CPC title

• B60W30/18054

  at stand still, e.g. engine in idling state (hill holding B60W30/18118) · CPC title