System and method for optimizing power delivery in a multiple output dynamically adjustable capacity system battery

Patent metadata

Field	Value
Publication number	US-12510602-B2
Application number	US-202318172013-A
Country	US
Kind code	B2
Filing date	Feb 21, 2023
Priority date	Feb 21, 2023
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A vehicle, a Multiple Output Dynamically Adjustable Capacity System (MODACS) of the vehicle and a method of operating the MODACS. The MODACS includes a string and a processor. The string is coupled to a grid. A grid voltage is set to a first set point. The processor is configured to detect a change in a state of health of the string and change the grid voltage from the first set point to a second set point in response to the change in the state of health of the string.

First claim

What is claimed is:

1 . A method of operating a Multiple Output Dynamically Adjustable Capacity System (MODACS) battery, comprising:
setting a grid voltage of the MODACS battery to a first set point; applying a diagnostic load to the battery, measuring a voltage drop at the MODACS battery in response to the diagnostic load being applied, comparing the voltage drop to a voltage threshold; and lowering the grid voltage to a second set point less than the first set point when the voltage drop is less than the voltage threshold and when applying the MODACS battery provides excess energy to the diagnostic load.

2 . The method of claim 1 , further comprising raising the grid voltage when the voltage drop is greater than or equal to the voltage threshold.

3 . The method of claim 1 , further comprising applying the diagnostic load via one of: (i) an intrusive test; and (ii) a nonintrusive test.

4 . The method of claim 3 , wherein the diagnostic load is applied in the nonintrusive test, further comprising determining the response to the diagnostic load using a Kalman filter.

5 . The method of claim 1 , further comprising changing the grid voltage to a plurality of second set points.

6 . The method of claim 1 , further comprising lowering the SOC along with lowering the grid voltage.

7 . The method of claim 2 , further comprising raising the SOC along with raising the grid voltage.

8 . A Multiple Output Dynamically Adjustable Capacity System (MODACS), comprising:
a string coupled to a grid; a processor configured to:
set a grid voltage of the grid to a first set point;
apply a diagnostic load to the battery, measuring a voltage drop at the MODACS battery in response to the diagnostic load being applied, comparing the voltage drop to a voltage threshold; and
lower the grid voltage to a second set point less than the first set point when the voltage drop is less than the voltage threshold and when applying the MODACS battery provides excess energy to the diagnostic load.

9 . The MODACS of claim 8 , wherein the processor is further configured to raise the grid voltage when the voltage drop is greater than or equal to the voltage threshold.

10 . The MODACS of claim 8 , wherein the processor is further configured to apply the diagnostic load in one of: (i) an intrusive test; and (ii) a nonintrusive test.

11 . The MODACS of claim 10 , wherein the diagnostic load is applied in the nonintrusive test, the processor being further configured determine the response to the diagnostic load using a Kalman filter.

12 . The MODACS of claim 8 , wherein the processor is further configured to change the grid voltage to a plurality of second set points.

13 . The MODACS of claim 8 , wherein the processor is further configured to comprising lower the SOC along with lowering the grid voltage.

14 . The MODACS of claim 8 , wherein the processor is further configured to comprising raise the SOC along with raising the grid voltage.

15 . A vehicle, comprising:
a Multiple Output Dynamically Adjustable Capacity System (MODACS) including a string coupled to a grid; a processor configured to:
set an operating voltage of the grid to a first set point;
apply a diagnostic load to the battery, measuring a voltage drop at the MODACS battery in response to the diagnostic load being applied, comparing the voltage drop to a voltage threshold; and
lower a grid voltage to a second set point less than the first set point when the voltage drop is less than the voltage threshold and when applying the MODACS battery provides excess energy to the diagnostic load.

16 . The vehicle of claim 15 , wherein the processor is further configured to raise the set point when the change in voltage is greater than or equal to the voltage threshold.

17 . The vehicle of claim 15 , wherein the processor is further configured to apply the diagnostic load in one of: (i) an intrusive test; and (ii) a nonintrusive test.

18 . The vehicle of claim 17 , wherein the diagnostic load is applied in the nonintrusive test, the processor being further configured to determine the response to the diagnostic load using a Kalman filter.

19 . The vehicle of claim 15 , wherein the processor is further configured to change the grid voltage to a plurality of second set points.

20 . The vehicle of claim 15 , wherein the processor is further configured to performing at least one of: (i) lowering the SOC along with lowering the rid voltage; and raising the SOC along with raising the grid voltage.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Bloom Aaron B
• Rich Dave Gerard
• De Stefano Robert A

Classifications

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H02J7/84

  Control of state of health [SOH] · CPC title

• G01R31/367

  Software therefor, e.g. for battery testing using modelling or look-up tables · CPC title

• G01R31/3835

  involving only voltage measurements · CPC title

• B60L58/16 Primary

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