METHOD AND SYSTEM OF CHARGING A BATTERY

• US 20160006286A1
• Filed: 07/02/2015
• Published: 01/07/2016
• Est. Priority Date: 07/07/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KHANDELWAL, Ashish, KIM, Ki-Young, RAMACHANDRAN, Sanoop, HARIHARAN, Krishnan Seethalakshmy
• Granted Patent: US 9,997,944 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage

Abstract

Embodiments herein disclose a method and system of charging a battery. The method includes identifying a state of the battery and a plurality of current levels corresponding to the state of the battery. Furthermore, the method includes charging the battery by applying the plurality of current levels corresponding to a pre-defined sequence to attain a cut-off voltage of the battery.

Claims

1. A method of charging a battery, comprising:

identifying a state of the battery and a plurality of current levels corresponding to the state of the battery; and

charging, the battery by applying the plurality of current levels corresponding to a pre-defined sequence to attain a cut-off voltage of the battery. The method of claim 1, wherein the state of the battery comprises at least one of;

state-of-health (SOH), state-of-charge (SOC), and chemical composition.

3. The method of claim 1, wherein charging the battery by applying the plurality of current levels corresponding to the pre-defined sequence comprises:

creating an initial charging profile for the battery based on the plurality of current levels corresponding to the state of the battery;

identifying an intersection current value between the initial charging profile and SOC in the state of the battery;

determining whether the SOC is equal to a SOC threshold; and

charging the battery by applying the plurality of current levels corresponding to the initial charging profile if the SOC is equal to the SOC threshold.

4. The method of claim 3, wherein the method further comprises:

dynamically creating a consecutive charging profile from the intersection current value in the initial charging profile if the SOC is different from the SOC threshold; and

charging the battery by applying the plurality of current levels corresponding to the consecutive charging profile.

5. The method of claim 1, wherein charging the battery by applying the plurality of current levels corresponding to the pre-defined sequence comprises:

creating an initial charging profile for the battery based on the plurality of current levels corresponding to the state of the battery;

identifying an intersection current value between the initial charging profile and SOC, state of health(SOH) in the state of the battery;

computing difference between a SOC threshold and the SOH;

determining whether the SOC is equal to the difference; and

charging the battery by applying the plurality of current levels corresponding to the initial charging profile if the SOC is equal to the difference.

6. The method of claim 5, wherein the method further comprises:

dynamically creating the consecutive charging profile from the intersection current value if the SOC is different from the difference; and

charging the battery by applying the plurality of current levels corresponding to the consecutive charging profile.

7. An apparatus for charging a battery, wherein the apparatus comprises:

an estimation unit configured to;

identify a state of the battery and a plurality of current levels corresponding to the state of the battery; and

a charge unit configured to;

charge the battery by applying the plurality of current levels corresponding to a pre-defined sequence to attain a cut-off voltage of the battery.

8. The apparatus of claim 7, wherein the state of the battery comprises at least one of a State of Health (SOH), a State of Charge (SOC), and a chemical decomposition.

9. The apparatus of claim 7, further comprising:

a processing unit configured to;

create an initial charging profile for the battery based on the plurality of current levels corresponding to the state of the battery;

identify an interaction current value between the initial charging profile and SOC in the state of the battery; and

determine whether the SOC is equal to a SOC threshold.

10. The apparatus of claim 9, wherein the charge unit charges the battery by applying the plurality of current levels corresponding to the initial charging profile if the SOC is equal to the SOC threshold.

11. The apparatus of claim 9, wherein the processing unit dynamically creates a consecutive charging profile from the intersection current value in the initial charging profile if the SOC is different from the SOC threshold;

and

wherein the charge unit charges the battery by applying the plurality of current levels corresponding to the consecutive charging profile.

12. The apparatus of claim 7, further comprising:

a processing unit configured to;

create an initial charging profile for the battery based on the plurality of current levels corresponding to the state of the battery;

identify an interaction current value between the initial charging profile and SOC, state of health (SOH) in the state of the battery; and

compute difference between a SOC threshold and the SOH;

determine whether the SOC is equal to the difference.

13. The apparatus of claim 12, wherein the charge unit charges the battery by applying the plurality of current levels corresponding to the initial charging profile if the SOC is equal to the difference.

14. The apparatus of claim 12, wherein the processing unit dynamically creates the consecutive charging profile from the intersection current value if the SOC is different from the difference;

and

wherein the charge unit charges the battery by applying the plurality of current levels corresponding to the consecutive charging profile.

15. A non-transitory computer-readable recording medium having a program recorded thereon, which when executed, performs a method of charging a battery, the method comprising:

identifying a state of a battery and a plurality of current levels corresponding to the state of the battery; and

charging the battery by applying the plurality of current levels in a pre-defined sequence to attain a cut-off voltage of the battery.

16. A method of charging a battery, comprising:

identifying a state of the battery and a plurality of current levels corresponding to the state of the battery;

charging the battery by applying the plurality of current levels corresponding to a charging profile created using the state of the battery to attain a cut-off voltage of the battery.