Systems and methods for monitoring high voltage exposure hours of a high voltage system of an electric vehicle

Patent metadata

Field	Value
Publication number	US-12491792-B2
Application number	US-202318512778-A
Country	US
Kind code	B2
Filing date	Nov 17, 2023
Priority date	Nov 17, 2023
Publication date	Dec 9, 2025
Grant date	Dec 9, 2025

Abstract

Methods and systems are provided for monitoring high voltage (HV) exposure hours of a HV system in an electric vehicle (EV). Projected HV exposure hours is generated at one of a future vehicle age and a future EV mileage and is based on current HV exposure hours and historical HV exposure hours. The current HV exposure hours and the historical HV exposure hours are based on use of the battery system to supply power to vehicle propulsion loads and the at least one of offboard vehicle loads and onboard accessory loads. When the projected HV exposure hours is greater than a HV exposure hour threshold, a HV exposure hour alert associated with limitations in connection with the use of the battery system to supply power to the at least one of the offboard vehicle loads and the onboard accessory loads is generated for display on a display device.

First claim

What is claimed is:

1 . A high voltage (HV) exposure hour monitoring system of an electric vehicle (EV) comprising:
at least one processor; and at least one memory communicatively coupled to the at least one processor, the at least one memory comprising instructions that upon execution by the at least one processor, cause the at least one processor to:
generate projected HV exposure hours for a HV system of the EV at one of a future vehicle age and a future EV mileage, wherein:
the HV system is operably coupled to a battery system of the EV and is configured to enable a supply of power from the battery system to propulsion loads and at least one of offboard vehicle loads and onboard accessory loads;
the projected HV exposure hours is based on current HV exposure hours and historical HV exposure hours for the HV system; and
the current HV exposure hours and the historical HV exposure hours are based on use of the battery system for the supply of power to the propulsion loads and the at least one of the offboard vehicle loads and the onboard accessory loads;

based on a determination that the projected HV exposure hours is greater than a first HV exposure hour threshold at the one of the future vehicle age and the future EV mileage;
generate a HV exposure hour alert associated with limitations in connection with the use of the battery system for the supply of power to the at least one of the offboard vehicle loads and the onboard accessory loads for display on a display device of the EV;
disable an ability of the battery system to supply power to all of the at least one of the offboard vehicle loads and the onboard accessory loads; and
generate the HV exposure hour alert, the HV exposure hour alert comprising a first notification that the ability of the battery system to supply power to the all of the at least one of the offboard vehicle loads and the onboard accessory loads has been disabled.

2 . The system of claim 1 , wherein the at least one memory comprises further instructions that upon execution by the at least one processor, cause the at least one processor to:
generate the projected HV exposure hours at the one of the future vehicle age and the future EV mileage, wherein:
the projected HV exposure hours is based on the current HV exposure hours and the historical HV exposure hours; and
the current HV exposure hours and the historical HV exposure hours are based at least in part on the use of the battery system to supply power to the at least one of the offboard vehicle loads and the onboard accessory loads;
generate another projected HV exposure hours at the one of the future vehicle age and the future EV mileage, wherein the another projected HV exposure hours is based on discontinuation of the use of the battery system to supply power to the at least one of the offboard vehicle loads and the onboard accessory loads; determine whether the projected HV exposure hours is greater than the first HV exposure hour threshold and the another projected HV exposure hours is less than the first HV exposure hour threshold; and generate the HV exposure hour alert based on a determination that the projected HV exposure hours is greater than the first HV exposure hour threshold and the another projected HV exposure hours is less than the first HV exposure hour threshold.

3 . The system of claim 1 , wherein based on a determination that the projected HV exposure hours falls within a first HV exposure hour threshold range between the first HV exposure hour threshold value and a second HV exposure hour threshold value, the second HV exposure hour threshold value being less than the first HV exposure hour threshold value, the at least one memory comprises further instructions that upon execution by the at least one processor, cause the at least one processor to:
limit an amount of power that can be supplied by the battery system to a first subset of the at least one of the offboard vehicle loads and the onboard accessory loads; disable an ability of the battery system to supply power to a second subset of the at least one of the offboard vehicle loads and the onboard accessory loads; and generate the HV exposure hour alert, the HV exposure hour alert comprising a second notification that the amount of power that can be supplied by the battery system to the first subset of the at least one of the offboard vehicle loads and the onboard accessory loads has been limited and that the ability of the battery system to supply power to the second subset of the at least one of the offboard vehicle loads and the onboard accessory loads has been disabled.

4 . The system of claim 3 , wherein based on a determination that the projected HV exposure hours fall within a second HV exposure hour threshold range, wherein the second HV exposure hour threshold range is between the second HV exposure hour threshold value and a third HV exposure hour threshold value and the third HV exposure hour threshold value is less than the second HV exposure hour threshold value, the at least one memory comprises further instructions that upon execution by the at least one processor, cause the at least one processor to:
recommend limiting use of the battery system to supply power to the at least one of the offboard vehicle loads and the onboard accessory loads; limit an amount of power supplied by the battery system to a third subset of the at least one of the offboard vehicle loads and the onboard accessory loads; and generate the HV exposure hour alert, the HV exposure hour alert comprising a third notification to recommend limiting use of the battery system to supply power to the at least one of the offboard vehicle loads and the onboard accessory loads and that the amount of power that can be supplied to the third subset of the at least one of the offboard vehicle loads and the onboard accessory loads has been limited.

5 . The system of claim 4 , wherein based on a determination that the projected HV exposure hours fall within a third HV exposure hour threshold range, wherein the third HV exposure hour threshold range is between the third HV exposure hour threshold value and a fourth HV exposure hour threshold value and the fourth HV exposure hour threshold value is less than the third HV exposure hour threshold value, the at least one memory comprises further instructions that upon execution by the at least one processor, cause the at least one processor to generate the HV exposure hour alert, the HV exposure hour alert comprising a fourth notification to recommend limiting use of the battery system to supply power to the at least one of the offboard vehicle loads and the onboard accessory loads.

6 . The system of claim 1 , wherein the at least one memory comprises further instructions that upon execution by the at least one processor, cause the at least one processor to:
generate the projected HV exposure hours at the future vehicle age, wherein the projected HV exposure hours is based on the current HV exposure hours and the historical HV exposure hours corresponding to historical vehicle ages; and determine whether the projected HV exposure hours is greater than the first HV exposure hour threshold at the future vehicle age.

7 . The system of claim 6 , wherein the at least one memory comprises further instructions that upon execution by the at least one processor, cause the at least one processor to generate the projected HV exposure hours at the future vehicle age, wherein the projected HV exposure hours is based on the current HV exposure hours and the historical HV exposure hours corresponding to the historical vehicle ages within a pre-defined vehicle age window.

8 . The system of claim 1 , wherein the future vehicle age is a vehicle age warranty.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Bunnell Justin
• Zhang Yanyan
• Zettel Andrew M
• Shounia Ziad
• Peer Shanshan Li
• Nicholson James
• Moulliet Ryan B
• Dzurka Matthew

Classifications

• B60L1/00

  Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00) · CPC title

• B60L50/60 Primary

  using power supplied by batteries (in combination with fuel cells B60L50/75) · CPC title

• B60L2250/16

  by display · CPC title

• G01R31/3842

  combining voltage and current measurements · CPC title

• B60L2260/50

  by future state prediction · CPC title