Priority based power management system and method for an electric vehicle

• US 9,694,684 B2
• Filed: 12/03/2014
• Issued: 07/04/2017
• Est. Priority Date: 12/03/2014
• Status: Expired due to Fees

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Enomoto, Tomoyuki
• Primary Examiner(s): Nguyen, Cuong H
• Application Number:
  US14/559,541
• Publication Number:
  US 20160159220A1
• Time in Patent Office: 944 Days
• Field of Search: 180 6521, 320134-135, 320162, 320164, 320109, 701 22
• CPC Class Codes: B60L 1/00 Supplying electric power to auxiliary equipment of vehicles circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: B60L 1/006 to power outlets
• CPC Class Codes: B60L 15/2045 for optimising the use of energy
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 58/13 Maintaining the SoC within a determined range
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 2050/009 Priority selection
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 30/18054 at stand still, e.g. engine in idling state hill holding B60W30/18118
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 10/72 Electric energy management in electromobility

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.

Claims

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.

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).

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.

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 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 current SOC of the battery pack when the vehicle is operating in the fossil fuel operating mode.

16. The system of claim 14, wherein the memory storing program instructions that when executed by the processor, causes the processor to power individual off-board devices based on the priority of the off-board devices as the current SOC rises above predetermine threshold levels when the vehicle is operating in the fossil fuel operating mode.

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.

15. The system of claim 9, wherein the at least one priority of the off-board devices is inputted with a graphical user interface (GUI).