Variable charging strategy for plugin electric vehicles

Patent metadata

Field	Value
Publication number	US-10906426-B2
Application number	US-201816150715-A
Country	US
Kind code	B2
Filing date	Oct 3, 2018
Priority date	Oct 3, 2018
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A vehicle includes a battery. The vehicle includes a controller configured to inhibit battery charge. The charge inhibition is responsive to state of charge (SOC) of the battery achieving a cascading ceiling threshold during grid charge that decreases each day of a multiday period such that each day an SOC increase during the grid charge to achieve the ceiling threshold is same and the SOC achieves a floor threshold upon completion of a final day drive cycle of the multiday period.

First claim

What is claimed is:

1. A vehicle comprising:
a battery; and
a controller configured to, responsive to a state of charge (SOC) of the battery achieving a cascading ceiling threshold during grid charge that decreases each day of a multiday period such that each day an SOC increase during the grid charge to achieve the ceiling threshold is the same and the SOC achieves a floor threshold upon completion of a final day drive cycle of the multiday period, inhibit battery charge.

2. The vehicle of claim 1 , wherein the cascading ceiling threshold is based on an overall energy consumption of the vehicle averaged according to preceding multiday periods.

3. The vehicle of claim 1 , wherein the cascading ceiling threshold is defined to decrease proportionate to a number of days of the multiday period.

4. The vehicle of claim 1 , wherein the cascading ceiling threshold is defined to decrease proportionate to an average SOC decrease of each day of the multiday period.

5. The vehicle of claim 1 , wherein the floor threshold is based on a depleted battery efficiency point.

6. The vehicle of claim 1 , wherein the grid charge is provided by a plugin connector.

7. A vehicle comprising:
a traction battery; and
a controller configured to, responsive to a state of charge (SOC) of the traction battery reaching a ceiling threshold that is set according to a floor threshold and an average of overall energy consumption of the vehicle for a number of preceding drive cycles, inhibit traction battery charging, wherein the floor threshold is based on a depleted battery efficiency point.

8. The vehicle of claim 7 , wherein the average is variable according to a day of a week.

9. A method comprising:
by a controller, responsive to a state of charge (SOC) of a battery achieving a cascading ceiling threshold during grid charge that decreases each day of a multiday period such that each day an SOC increase during the grid charge to achieve the ceiling threshold is the same and the SOC achieves a floor threshold upon completion of a final day drive cycle of the multiday period, inhibit battery charge.

10. The method of claim 9 , wherein the cascading ceiling threshold is based on an overall energy consumption of a vehicle averaged according to preceding multiday periods.

11. The method of claim 9 , wherein the cascading ceiling threshold is defined to decrease proportionate to a number of days of the multiday period.

12. The method of claim 9 , wherein the cascading ceiling threshold is defined to decrease proportionate to an average SOC decrease of each day of the multiday period.

13. The method of claim 9 , wherein the floor threshold is based on a depleted battery efficiency point.

14. The method of claim 9 , wherein the grid charge is provided by a plugin connector.

Assignees

• Ford Global Tech Llc

Inventors

• Morris Phillip
• Ahmed Nayaz Khalid
• Kapadia Jimmy
• Boston Daniel Lewis

Classifications

• B60L50/15

  with additional electric power supply (with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61) · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• B60L58/12

  responding to state of charge [SoC] · CPC title

• B60L58/16

  responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH] · CPC title

• B60L53/00

  Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles · CPC title