Battery heat balancing during peak power mode

Patent metadata

Field	Value
Publication number	US-11126232-B2
Application number	US-201816203302-A
Country	US
Kind code	B2
Filing date	Nov 28, 2018
Priority date	Nov 28, 2018
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

In some examples, a control unit is configured to consider battery heat. The control unit is adapted to provide power from a battery to a system during a peak power mode that includes peak power and off-peak power, and consider heat balance in the battery during the peak power mode by providing peak power so that heat of the battery corresponds to a reference condition heat of the battery.

First claim

What is claimed is:

1. An apparatus comprising:
a battery; and
a fuel gauge integrated circuit coupled to the battery, wherein the fuel gauge integrated circuit is configured to consider battery heat, the fuel gauge integrated circuit adapted to:
provide power from the battery to a system during a peak power mode that includes peak power and off-peak power, wherein the system in addition to the power from the battery also receives power from a power supply unit during the peak power mode; and
apply heat balance in the battery during the peak power mode by providing peak power so that heat of the battery is same as or less than a reference condition heat of the battery, wherein degradation to battery life of the battery is substantially halted by the application of heat balance relative to the reference condition heat of the battery, wherein the battery continues to provide power to the system during application of heat balance in the peak power mode.

2. The apparatus of claim 1 , the fuel gauge integrated circuit adapted to:
maintain a heat from the battery over the time period under peak power mode to be the same as or less than a heat from the battery over the time period under the reference condition.

3. The apparatus of claim 1 , the fuel gauge integrated circuit adapted to:
maintain a heat from the battery over the time period under peak power mode to be the same as or less than an allowable heat.

4. The apparatus of claim 1 , the fuel gauge integrated circuit adapted to:
provide peak current in steps including at least one peak current and at least one off-peak current.

5. The apparatus of claim 1 , wherein the heat from the battery includes a joule heat.

6. The apparatus of claim 1 , wherein the heat from the battery includes a heat by chemical reaction.

7. The apparatus of claim 1 , the fuel gauge integrated circuit adapted to:
calculate available peak current and/or available peak power based on a battery thermal budget.

8. The apparatus of claim 1 , the fuel gauge integrated circuit adapted to:
determine the heat balance based on current under reference condition, duration of peak current, duration of off-peak current, peak current, and off-peak current.

9. The apparatus of claim 1 , the fuel gauge integrated circuit adapted to:
provide peak current in steps including at least two different peak currents.

10. The apparatus of claim 1 , the fuel gauge integrated circuit adapted to:
provide peak current in steps including at least two different peak currents and at least two different off-peak currents.

11. The apparatus of claim 1 , wherein the reference condition heat of the battery is the heat from the battery during a reference discharge mode.

12. A method to consider battery heat, comprising:
providing power from a battery to a system during a peak power mode that includes peak power and off-peak power, wherein the system in addition to the power from the battery also receives power from a power supply unit during the peak power mode; and
considering heat balance in the battery during the peak power mode by providing peak power so that heat of the battery is same as or less than a reference condition heat of the battery, wherein degradation to battery life of the battery is substantially halted by the application of heat balance relative to the reference condition heat of the battery, wherein the battery continues to provide power to the system during application of heat balance in the peak power mode.

13. The method of claim 12 , comprising:
maintaining a heat from the battery over the time period under peak power mode to be the same as or less than a heat from the battery over the time period under the reference condition.

14. The method of claim 12 , comprising:
providing peak current in steps including at least one peak current and at least one off-peak current.

15. The method of claim 12 , comprising:
determining the heat balance based on current under reference condition, duration of peak current, duration of off-peak current, peak current, and off-peak current.

16. One or more tangible, non-transitory machine readable media comprising a plurality of instructions that, in response to being executed on at least one processor, cause the at least one processor to:
provide power from a battery to a system during a peak power mode that includes peak power and off-peak power, wherein the system in addition to the power from the battery also receives power from a power supply unit during the peak power mode; and
consider heat balance in the battery during the peak power mode by providing peak power so that heat of the battery is same as or less than a reference condition heat of the battery, wherein degradation to battery life of the battery is substantially halted by the application of heat balance relative to the reference condition heat of the battery, wherein the battery continues to provide power to the system during application of heat balance in the peak power mode.

17. The one or more tangible, non-transitory machine readable media of claim 16 , comprising a plurality of instructions that, in response to being executed on at least one processor, cause the at least one processor to:
maintain a heat from the battery over the time period under peak power mode to be the same as or less than a heat from the battery over the time period under the reference condition.

18. The one or more tangible, non-transitory machine readable media of claim 16 , comprising a plurality of instructions that, in response to being executed on at least one processor, cause the at least one processor to:
maintain a heat from the battery over the time period under peak power mode to be the same as or less than an allowable heat.

19. The one or more tangible, non-transitory machine readable media of claim 16 , comprising a plurality of instructions that, in response to being executed on at least one processor, cause the at least one processor to:
provide peak current in steps including at least one peak current and at least one off-peak current.

20. The one or more tangible, non-transitory machine readable media of claim 16 , wherein the heat from the battery includes a joule heat.

21. The one or more tangible, non-transitory machine readable media of claim 16 , wherein the heat from the battery includes a heat by chemical reaction.

22. The one or more tangible, non-transitory machine readable media of claim 16 , comprising a plurality of instructions that, in response to being executed on at least one processor, cause the at least one processor to:
determine the heat balance based on current under reference condition, duration of peak current, duration of off-peak current, peak current, and off-peak current.

23. The one or more tangible, non-transitory machine readable media of claim 16 , comprising a plurality of instructions that, in response to being executed on at least one processor, cause the at least one processor to:
provide peak current in steps including at least two different peak currents.

24. The one or more tangible, non-transitory machine readable media of claim 16 , comprising a plurality of instructions that, in response to being executed on at least one processor, cause the at least one processor to:
provide peak current in steps including at least two different peak currents and at least two different off-peak currents.

25. A system comprising:
a processor;
a volt

Assignees

• Intel Corp

Inventors

• Matsumura Naoki
• Keates Andy
• Fritz Brian

Classifications

• H02J7/977

  of the battery · CPC title

• H02J7/94

  in response to battery current · CPC title

• H01M10/63

  Control systems (charging or discharging in response to temperature H01M10/44 {, H01M10/443}; measurement of temperature H01M10/48 {, H01M10/486}) · CPC title

• H01M10/615

  Heating or keeping warm · CPC title

• G06F1/26

  Power supply means, e.g. regulation thereof (for memories G11C) · CPC title