Method and electronic device for detecting internal short circuit in battery

• US 10,324,139 B2
• Filed: 12/27/2017
• Issued: 06/18/2019
• Est. Priority Date: 12/27/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Tagade, Piyush, Khandelwal, Ashish, Hariharan, Krishnan Seethalakshmy, Mandli, Aravinda Reddy, Ramachandran, Sanoop, Yadu, Ankit, Paramasivam, Periyasamy, Kang, Dough Heun
• Primary Examiner(s): La, Anh V
• Application Number:
  US15/855,868
• Publication Number:
  US 20180180680A1
• Time in Patent Office: 538 Days
• Field of Search: 3406361, 340635, 34063617, 34063619, 3406362, 320134, 320136, 320107, 320157, 320116
• CPC Class Codes: G01R 31/371 with remote indication, e.g. on external chargers
• CPC Class Codes: G01R 31/389 Measuring internal impedance, internal conductance or related variables
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: G01R 31/52 Testing for short-circuits, leakage current or ground faults
• CPC Class Codes: G08B 21/185 Electrical failure alarms

Abstract

Embodiments herein provide a method and electronic device for detecting an internal short circuit in a battery. The method includes obtaining, by a battery management system, battery gauge data. Further, the method includes estimating, by the battery management system, an internal resistance of the battery using the battery gauge data. Furthermore, the method includes detecting, by the battery management system, the internal short circuit in the battery by comparing a change in the internal resistance with a pre-defined resistance change threshold value.

Claims

1. A method for operating an electronic device, the method comprising:

acquiring at least one parameter associated with charging a battery;

estimating an internal resistance of the battery using the at least one parameter;

in response to a state of the battery being changed from charge to discharge, identifying change in magnitude of the internal resistance by applying a signal processing algorithm on the estimated internal resistance; and

detecting an internal short circuit in the battery by comparing a value of the change in magnitude of the internal resistance with a threshold for a resistance change.

2. The method of claim 1, wherein detecting the internal short circuit in the battery comprises:

applying Haar transform on the estimated internal resistance to measure discontinuity in the internal resistance during a charge-discharge transition;

identifying a magnitude of change in the internal resistance based on the Haar transform; and

detecting the internal short circuit in the battery when the magnitude of the change in internal resistance is less than the threshold for the resistance change.

3. The method of claim 1, further comprising:

displaying a message indicating that the internal short circuit in the battery is detected; and

displaying an indicator to view details of the detected internal short circuit.

4. The method of claim 3, wherein the message comprises an alert message about failure of the battery.

5. The method of claim 3, wherein the message comprises a message for scheduling replacement of the battery and a message for indicating safety limit of charging the battery according to a minimum voltage.

6. The method of claim 1, further comprising:

acquiring at least one parameter for normal battery and faulty battery;

determining coefficients of the signal processing algorithm for the internal resistance based on the at least one parameter for normal battery and faulty battery; and

determining a ratio of coefficients for the normal battery and faulty battery as the threshold,

wherein the signal processing algorithm is used to identify the change in magnitude of the internal resistance.

7. The method of claim 1, further comprising:

transmitting an indication about the detected internal short circuit to at least one connected electronic devices of a user.

8. The method of claim 1, wherein the at least one parameter is stored periodically during charge-discharge transition for detecting the internal short circuit in the battery.

9. The method of claim 1, wherein the at least one parameter comprises at least one of voltage, current, temperature, total battery capacity, an internal impedance, a state of charge of the battery, a number of charging cycles, a number of discharging cycles, a discharge capacity, usage information of an electronic device that includes the battery, or usage information of each application installed in the electronic device.

10. A method for detecting an internal short circuit in a battery, the method comprising:

acquiring at least one parameter associated with charging a battery from each battery among a plurality of batteries;

estimating an internal resistance of each battery using the at least one parameter;

in response to a state of each battery being changed to discharge, identifying change in magnitude of the internal resistance by applying a signal processing algorithm on the estimated internal resistance;

detecting an internal short circuit in each battery by comparing a value of the change in magnitude of the internal resistance with a threshold for a resistance change;

determining a fault index value of the plurality of batteries; and

identifying the plurality of batteries as faulty batteries by comparing the fault index value with a pre-defined fault index value.

11. The method of claim 10, further comprising:

displaying a message indicating that the faulty batteries among the plurality of batteries are detected.

12. An electronic device comprising:

at least one processor configured to;

acquire at least one parameter associated with charging a battery,

estimate an internal resistance of the battery using the at least one parameter,

in response to a state of the battery being changed from charge to discharge,

identify change in magnitude of the internal resistance by applying a signal processing algorithm on the estimated internal resistance, and

detect an internal short circuit in the battery by comparing a value of the change in magnitude of the internal resistance with a threshold for a resistance change.

13. The electronic device of claim 12, wherein the at least one processor is further configured to:

apply a Haar transform on the estimated internal resistance to measure discontinuity in the internal resistance during a charge-discharge transition,

identify a magnitude of change in the internal resistance based on the Haar transform, and

detect the internal short circuit in the battery when the magnitude of the change in internal resistance is less than the threshold for the resistance change.

14. The electronic device of claim 12, wherein the at least one processor is further configured to:

display a message indicating that the internal short circuit in the battery is detected, and display an indicator to view details of the detected internal short circuit.

15. The electronic device of claim 14, wherein the message comprises an alert message about failure of the battery.

16. The electronic device of claim 14, wherein the message comprises a message for scheduling replacement of the battery and a message for indicating a safety limit of charging the battery according to a minimum voltage.

17. The electronic device of claim 14, wherein the at least one processor is further configured to:

acquire at least one parameter for normal battery and faulty battery,

determine coefficients of the signal processing algorithm for the internal resistance based on the at least one parameter for normal battery and faulty battery, and

determine a ratio of coefficients for the normal battery and faulty battery as the threshold,

wherein the signal processing algorithm is used to identify the change in magnitude of the internal resistance.

18. The electronic device of claim 12, wherein the at least one processor is further configured to indicate the detected internal short circuit by transmitting an indication about the detected internal short circuit to at least one connected electronic device of a user.

19. The electronic device of claim 12, wherein the at least one parameter is stored periodically during charge-discharge transition for detecting the internal short circuit in the battery.

20. The electronic device of claim 12, wherein the at least one parameter comprises at least one of voltage, current, temperature, total battery capacity, an internal impedance, a state of charge of the battery, a number of charging cycles, a number of discharging cycles, a discharge capacity, usage information of the electronic device, or usage information of each application installed in the electronic device.