Method and system with battery management

Patent metadata

Field	Value
Publication number	US-11959968-B2
Application number	US-202117463841-A
Country	US
Kind code	B2
Filing date	Sep 1, 2021
Priority date	Sep 10, 2020
Publication date	Apr 16, 2024
Grant date	Apr 16, 2024

Abstract

A battery management method and system are provided. The method includes acquiring one or more parameters associated with the battery. The one or more parameters includes a current level, a voltage level, a State of Charge (SOC), and a temperature. The method includes determining a load and energy estimation model based on the one or more acquired parameters. The method includes identifying a power limit of the battery based on the load and energy estimation model. The method includes determining a power margin of the battery at a first usage time interval based on the identified power limit. The method includes performing one or more actions, based on a determination that the power margin of the battery exceeds a predefined threshold level.

First claim

What is claimed is:

1. A battery management method comprising:
determining, by a battery management system, a load and energy estimation model based on obtaining a pulse duration of a battery, a depth of discharge of the battery, a cut-off voltage associated with a pre-set voltage of the battery, and a temperature of the battery based on at least one acquired parameter associated with the battery,
wherein the at least one parameter comprises a current level, a voltage level, a state of charge (SOC), a temperature, or a combination of at least two of the parameters thereof;
identifying, by the battery management system, a power limit of the battery based on the load and energy estimation model;
determining, by the battery management system, a power margin of the battery at a first usage time interval based on the identified power limit; and
performing, by the battery management system, at least one action, based on a determination that the power margin of the battery exceeds a predefined threshold level.

2. The method of claim 1 , wherein the at least one parameter is acquired by the battery management system.

3. A battery management method comprising:
determining, by a battery management system, a load and energy estimation model based on at least one acquired parameter associated with the battery, wherein the at least one parameter comprises a current level, a voltage level, a state of charge (SOC), a temperature, or a combination of at least two of the parameters thereof;
identifying, by the battery management system, a power limit of the battery based on the load and energy estimation model;
determining, by the battery management system, a power margin of the battery at a first usage time interval based on the identified power limit; and
performing, by the battery management system, at least one action, based on a determination that the power margin of the battery exceeds a predefined threshold level,
wherein the at least one action comprises notifying a user to close at least one application running in an electronic device, notifying the user to close at least one background application running in the electronic device, reducing a clock speed of a processor of the electronic device, notifying the user of a remaining capacity of the battery, notifying the user of a maximum current extractable from the battery at a discharge condition, notify the user of a temperature dependent effect of the battery, predicting a state of health (SOH) of the battery, providing a route based on power demands in a vehicle, notifying a user of the vehicle to charge the battery, or a combination of at least two of the actions thereof.

4. The method of claim 1 , wherein the load and energy estimation model is determined based on a change in at least one of an ambient temperature of the battery and a cell temperature of the battery.

5. The method of claim 1 , wherein the load and energy estimation model is determined when a discharge mode of the battery is changed from a first level to a second level.

6. The method of claim 3 , wherein the SOH of the battery is predicted by:
obtaining a maximum current profile associated with a fresh battery;
estimating a maximum current profile associated with the battery based on the load and energy estimation model;
determining a ratio of the estimated maximum current profile associated with the battery with the maximum current profile associated with the fresh battery; and
predicting the SOH of the battery based on the determined ratio.

7. A battery management system, comprising:
one or more processors;
a memory; and
a load and energy estimation model configuration controller, coupled with the one or more processors and the memory, and configured to:
determine a load and energy estimation model based on obtaining a pulse duration of a battery, a depth of discharge of the battery, a cut-off voltage associated with a pre-set voltage of the battery, and a temperature of the battery based on at least one acquired parameter associated with the battery,
wherein the at least one parameter comprises a current level, a voltage level, a state of charge (SOC), a temperature, or a combination of at least two of the parameters thereof;
identify a power limit of the battery based on the load and energy estimation model;
determine a power margin of the battery at a first usage time interval based on the identified power limit; and
perform at least one action based on a determination that the power margin of the battery exceeds a predefined threshold level.

8. The battery management system of claim 7 , wherein the at least one parameter is acquired by the battery management system.

9. The battery management system of claim 7 , wherein the at least one action comprises notifying a user to close at least one application running in an electronic device, notifying the user to close at least one background application running in the electronic device, reducing a clock speed of a processor of the electronic device, notifying the user of a remaining capacity of the battery, notifying the user of a maximum current extractable from the battery at a discharge condition, notifying the user of a temperature dependent effect of the battery, predicting a state of health (SOH) of the battery, providing a route based on power demands of a vehicle, notifying a user of the vehicle to charge the battery, or a combination of at least two of the actions thereof.

10. The battery management system of claim 7 , wherein the load and energy estimation model is determined based on a change in at least one of an ambient temperature of the battery and a cell temperature of the battery.

11. The battery management system of claim 7 , wherein the load and energy estimation model is determined when a discharge mode of the battery is changed from a first level to a second level.

12. The battery management system of claim 9 , wherein the SOH of the battery is predicted by:
obtaining a maximum current profile associated with a fresh battery;
estimating a maximum current profile associated with the battery based on the load and energy estimation model;
determining a ratio of the estimated maximum current profile associated with the battery with the maximum current profile associated with the fresh battery; and
predicting the SOH of the battery based on the determined ratio.

13. An apparatus, comprising:
one or more processors, configured to:
determine a load and energy estimation model based on obtaining a pulse duration of a battery, a depth of discharge of the battery, a cut-off voltage associated with a pre-set voltage of the battery, and a temperature of the battery based on an obtained parameter associated with a battery;
identify a power limit of the battery based on the determined load and energy estimation model;
determine a power margin of the battery at a usage time interval based on the identified power limit, and
perform a user-based action when the power margin is determined to exceed a predetermined threshold level.

14. The apparatus of claim 13 , wherein the apparatus is at least one of an electronic device and an electric vehicle.

15. The apparatus of claim 13 , wherein the at least one battery-related parameter comprises a current level, a voltage level, a state of charge (SOC), and a temperature.

16. The apparatus of claim 13 , wherein the user-based action comprises at least one of notifying a user to close at least one application running in an electronic device, notifying the user to close at least one background application running in the electronic device, reducing a clock s

Assignees

• Samsung Electronics Co Ltd

Inventors

• Bharathraj Sagar
• Kaushik Anshul
• Patil Rajkumar Subhash
• Adiga Shashishekara Parampalli
• Song Tae Won

Classifications

• G01R31/367 Primary

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

• B60L58/12 Primary

  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

• G01R31/371

  with remote indication, e.g. on external chargers · CPC title

• G01R31/382

  Arrangements for monitoring battery or accumulator variables, e.g. SoC · CPC title