DIAGNOSTIC USE OF PHYSICAL AND ELECTRICAL BATTERY PARAMETERS AND STORING RELATIVE CONDITION DATA

• US 20130069658A1
• Filed: 09/16/2011
• Published: 03/21/2013
• Est. Priority Date: 09/16/2011
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Rich, David Gerard, Sutarwala, Taha Shabbir Husain, Sengupta, Surajit
• Granted Patent: US 8,860,420 B2
• Time in Patent Office: Days
• US Class Current: 324/426
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

In at least one embodiment, a power management module measures an electromagnetic radiation spectrum or a voltage response of a battery module. The measured electromagnetic radiation spectrum or voltage response of the battery is compared to a plurality of reference electromagnetic radiation spectrums or voltage responses, respectively, which may be determined for authentic batteries, for example. A relative condition of the battery, such as an age or state of health, may be estimated based on the measured electromagnetic radiation spectrum or voltage response of the battery module, and stored in a memory store. The rate of change of the relative condition of the battery over a period of time may be determined to identify potential defects in the battery.

Claims

1. An electronic device comprising:

an interface for receiving a battery comprising a battery module for supplying power to the electronic device; and

a power management module coupled to the battery and configured to;

measure an electromagnetic radiation spectrum of the battery due to current flow in the battery module;

compare the measured electromagnetic radiation spectrum of the battery to at least one of a plurality of reference electromagnetic radiation spectrums, each of the reference electromagnetic radiation spectrums corresponding with a different relative condition;

determine a relative condition of the battery by comparing the measured electromagnetic radiation spectrum with one of the plurality of reference electromagnetic radiation spectrums; and

store, in a memory store, data identifying the relative condition of the battery.

2. The device of claim 1, further comprising the battery.

3. The device of claim 1, wherein the device comprises a mobile communication device.

4. The device of claim 1, wherein each of the reference electromagnetic radiation spectrums comprises an electromagnetic radiation spectrum of an authentic battery.

5. The device of claim 1, wherein the power management module is further configured to:

store additional data obtained when determining the relative condition of the battery.

6. The device of claim 5, wherein the additional data comprises an indication of when the relative condition of the battery was determined.

7. The device of claim 1, wherein the relative condition of the battery comprises at least one of an age or state of health of the battery.

8. The device of claim 1, wherein the power management module is configured to:

repeat measuring the electromagnetic radiation spectrum, comparing the electromagnetic radiation spectrum, and determining the relative condition of the battery at a second time such that a second relative condition of the battery is determined;

compare the second relative condition of the battery with the relative condition of the battery previously stored in the memory store;

determine a rate of change between the second relative condition of the battery and the relative condition of the battery previously stored in the memory store; and

determine if the rate of change exceeds a threshold tolerance level.

9. The device of claim 8, wherein the power management module is further configured to:

store additional data obtained when determining the relative condition of the battery;

wherein the additional data is used when determining the second relative condition of the battery.

10. The device of claim 8, wherein the power management module is further configured to output an indicator of a potential defect in the battery if the rate of change is determined to exceed the threshold tolerance level.

11. The device of claim 1, wherein the power management module is configured to:

repeat measuring the electromagnetic radiation spectrum, comparing the electromagnetic radiation spectrum, determining the relative condition of the battery, and storing the relative condition for a plurality of instances such that a plurality of relative conditions of the battery are determined over a period of time;

compare the plurality of relative conditions of the battery stored in the memory store;

determine a rate of change of relative condition of the battery over the period of time; and

determine if the rate of change exceeds a threshold tolerance level.

12. The device of claim 11, wherein the power management module is further configured to output an indicator of a potential defect in the battery if the rate of change is determined to exceed the threshold tolerance level.

13. A method for authenticating a battery for use with an electronic device, the battery comprising a battery module for supplying power to the electronic device, the method comprising:

measuring an electromagnetic radiation spectrum of the battery due to current flow in the battery module;

comparing the measured electromagnetic radiation spectrum of the battery to at least one of a plurality of reference electromagnetic radiation spectrums, each of the reference electromagnetic radiation spectrums corresponding with a different relative condition;

determining a relative condition of the battery by comparing the measured electromagnetic radiation spectrum with one of the plurality of reference electromagnetic radiation spectrums; and

storing, in a memory store, data identifying the relative condition of the battery.

14. The method of claim 13, further comprising:

repeating the measuring, the comparing, and the determining such that a second relative condition of the battery is determined;

comparing the second relative condition of the battery with the relative condition of the battery previously stored in the memory store;

determining a rate of change between the second relative condition of the battery and the relative condition of the battery previously stored in the memory store; and

determining if the rate of change exceeds a threshold tolerance level.

15. The method of claim 14, further comprising:

storing additional data obtained when determining the relative condition of the battery;

wherein the additional data is used when determining the second relative condition of the battery.

16. The method of claim 14, further comprising outputting an indicator of a potential defect in the battery if the rate of change is determined to exceed the threshold tolerance level.

17. The method of claim 13, further comprising:

repeating the measuring, the comparing, the determining, and the storing for a plurality of instances such that a plurality of relative conditions of the battery are determined over a period of time;

comparing the plurality of relative conditions of the battery stored in the memory store;

determining a rate of change of relative condition of the battery over the period of time; and

determining if the rate of change exceeds a threshold tolerance level.

18. The method of claim 17, further comprising outputting an indicator of a potential defect in the battery if the rate of change is determined to exceed the threshold tolerance level.

19. An electronic device comprising:

an interface for receiving a battery comprising a battery module for supplying power to the electronic device; and

a power management module coupled to the battery and configured to;

measure a voltage response of the battery due to current flow in the battery module;

compare the measured voltage response of the battery to at least one of a plurality of reference voltage responses, each of the reference voltage responses corresponding with a different relative condition;

determine a relative condition of the battery by comparing the measured voltage response with one of the plurality of reference voltage responses; and

store, in a memory store, data identifying the relative condition of the battery.

20. The device of claim 19, further comprising the battery.

21. The device of claim 19, wherein the device comprises a mobile communication device.

22. The device of claim 19, wherein each of the reference voltage responses comprises an voltage response of an authentic battery.

23. The device of claim 19, wherein the power management module is further configured to:

store additional data obtained when determining the relative condition of the battery.

24. The device of claim 23, wherein the additional data comprises an indication of when the relative condition of the battery was determined.

25. The device of claim 19, wherein the relative condition of the battery comprises at least one of an age or state of health of the battery.

26. The device of claim 19, wherein the power management module is configured to:

repeat measuring the voltage response, comparing the voltage response, and determining the relative condition of the battery at a second time such that a second relative condition of the battery is determined;

compare the second relative condition of the battery with the relative condition of the battery previously stored in the memory store;

determine a rate of change between the second relative condition of the battery and the relative condition of the battery previously stored in the memory store; and

determine if the rate of change exceeds a threshold tolerance level.

27. The device of claim 26, wherein the power management module is further configured to:

store additional data obtained when determining the relative condition of the battery;

wherein the additional data is used when determining the second relative condition of the battery.

28. The device of claim 26, wherein the power management module is further configured to output an indicator of a potential defect in the battery if the rate of change is determined to exceed the threshold tolerance level.

29. The device of claim 19, wherein the power management module is configured to:

repeat measuring the voltage response, comparing the voltage response, determining the relative condition of the battery, and storing the relative condition for a plurality of instances such that a plurality of relative conditions of the battery are determined over a period of time;

compare the plurality of relative conditions of the battery stored in the memory store;

determine a rate of change of relative condition of the battery over the period of time; and

determine if the rate of change exceeds a threshold tolerance level.

30. The device of claim 29, wherein the power management module is further configured to output an indicator of a potential defect in the battery if the rate of change is determined to exceed the threshold tolerance level.

31. A method for authenticating a battery for use with an electronic device, the battery comprising a battery module for supplying power to the electronic device, the method comprising:

measuring a voltage response of the battery due to current flow in the battery module;

comparing the measured voltage response of the battery to at least one of a plurality of reference voltage responses, each of the reference voltage responses corresponding with a different relative condition;

determining a relative condition of the battery by comparing the measured voltage response with one of the plurality of reference voltage responses; and

storing, in a memory store, data identifying the relative condition of the battery.

32. The method of claim 31, further comprising:

repeating the measuring, the comparing, and the determining such that a second relative condition of the battery is determined;

comparing the second relative condition of the battery with the relative condition of the battery previously stored in the memory store;

determining a rate of change between the second relative condition of the battery and the relative condition of the battery previously stored in the memory store; and

determining if the rate of change exceeds a threshold tolerance level.

33. The method of claim 32, further comprising:

storing additional data obtained when determining the relative condition of the battery;

wherein the additional data is used when determining the second relative condition of the battery.

34. The method of claim 32, further comprising outputting an indicator of a potential defect in the battery if the rate of change is determined to exceed the threshold tolerance level.

35. The method of claim 31, further comprising:

repeating the measuring, the comparing, the determining, and the storing for a plurality of instances such that a plurality of relative conditions of the battery are determined over a period of time;

comparing the plurality of relative conditions of the battery stored in the memory store;

determining a rate of change of relative condition of the battery over the period of time; and

determining if the rate of change exceeds a threshold tolerance level.

36. The method of claim 35, further comprising outputting an indicator of a potential defect in the battery if the rate of change is determined to exceed the threshold tolerance level.