Method and apparatus for adjusting a workload to perform power management to extend battery cycle life

Patent metadata

Field	Value
Publication number	US-11209879-B2
Application number	US-201916458422-A
Country	US
Kind code	B2
Filing date	Jul 1, 2019
Priority date	Jul 1, 2019
Publication date	Dec 28, 2021
Grant date	Dec 28, 2021

Abstract

An information handling system includes a processor, an embedded controller (EC) and a battery system. The EC sends a request to the processor based upon a temperature of the battery system. The request includes power limit recommendation that is received by the processor. The processor adjusts a workload based upon the received power limit recommendation from the EC. The adjustment in the workload may correspond to a decrease in discharging rates of the battery system.

First claim

What is claimed is:

1. An information handling system having improved power management, comprising:
a processor;
an embedded controller (EC) coupled to the processor; and
a battery system coupled to the processor and to the EC, wherein the EC sends a request to the processor based upon a temperature of the battery system, upon a current battery capacity of the battery system, and upon battery cycles of the battery system, wherein the processor adjusts a workload based upon the received request, wherein the adjustment in the workload generates a change in a battery discharging rate from a first battery discharging rate to a second battery discharging rate, wherein the change in the battery discharging rate increases a number of charging cycles available in the battery system.

2. The information handling system of claim 1 , wherein the EC includes a baseboard management controller.

3. The information handling system of claim 1 , wherein the request includes a power limit recommendation.

4. The information handling system of claim 1 , wherein the EC sends the request when the temperature exceeds a battery system temperature threshold limit.

5. The information handling system of claim 4 , wherein the EC utilizes a look-up table to determine the battery system temperature threshold limit.

6. The information handling system of claim 5 , wherein the look-up table includes a battery capacity range, a first limit, an average discharging rate, a second limit, and a calculated battery system temperature threshold limit.

7. The information handling system of claim 5 , wherein the battery system temperature threshold limit is calculated by adding the first limit and the second limit.

8. The information handling system of claim 5 , wherein the second limit includes a preconfigured equivalent value that corresponds to a particular average discharging rate.

9. The information handling system of claim 1 , wherein the request includes a decrease in the workload to decrease the battery discharging rates.

10. An information handling system, comprising:
an embedded controller (EC); and
limit recommendation based upon a temperature of the battery system, upon a current battery capacity of the battery system, and upon battery cycles of the battery system, wherein the power limit recommendation facilitates adjustment in a system load of the information handling system, wherein the adjustment in the workload generates a change in a battery discharging rate from a first battery discharging rate to a second battery discharging rate, wherein the change in the battery discharging rate increases a number of charging cycles available in the battery system.

11. The information handling system of claim 10 , wherein the EC sends the power limit recommendation when the temperature exceeds a battery system temperature threshold limit.

12. The information handling system of claim 11 , wherein the EC utilizes the look-up table to determine the battery system temperature threshold limit.

13. The information handling system of claim 10 , wherein the look-up table includes a battery capacity range, a first limit, an average discharging rate, a second limit, and a calculated battery system temperature threshold limit.

14. The information handling system of claim 13 , wherein the battery system temperature threshold limit is calculated by adding the first limit and the second limit.

15. The information handling system of claim 14 , wherein the second limit includes a preconfigured equivalent value that corresponds to a particular average discharging rate.

16. A method, comprising:
calculating, by an embedded controller, of a battery system temperature threshold limit;
reading a battery temperature;
comparing the read battery temperature to the battery system temperature threshold limit;
sending a power limit recommendation to a processor based upon the read battery temperature, upon a current battery capacity of the battery system, and upon battery cycles of the battery system, wherein the processor adjusts a workload based upon the received power limit recommendation, wherein the adjustment in the workload decreases a discharging rate of the battery system, from a first battery discharging rate to a second battery discharging rate, wherein the change in the battery discharging rate increases a number of charging cycles available in the battery system.

17. The method of claim 16 , wherein a look-up table is used to calculate the battery system temperature threshold limit.

18. The method of claim 16 , wherein the look-up table includes a first limit and a second limit that are added together to calculate the battery system temperature threshold limit.

Assignees

• Dell Products Lp

Inventors

• He Qinghong
• Ning Yan
• Lerma John Robert
• Davis Louis M

Classifications

• G06F1/206 Primary

  comprising thermal management · CPC title

• G06F1/3234

  Power saving characterised by the action undertaken · CPC title

• G06F1/3287

  by switching off individual functional units in the computer system · CPC title

• Y02D10/00

  Energy efficient computing, e.g. low power processors, power management or thermal management · CPC title

• G06F1/329

  by task scheduling · CPC title