Intelligent battery safety management system configured to compare collected operational data with reference operational data

• US 7,751,994 B2
• Filed: 09/29/2007
• Issued: 07/06/2010
• Est. Priority Date: 09/29/2007
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Keates, Andrew William, Nguyen, Don J., Matsumura, Naoki, Otani, Nobuhiro, Hamaji, Kiyohiro, Li, Peter T.
• Primary Examiner(s): Wachsman; Hal D
• Application Number:
  US11/906,006
• Publication Number:
  US 20090088992A1
• Time in Patent Office: 1,011 Days
• Field of Search: 702/63, 702/58, 702/64, 702/59
• US Class Current: 702/63
• CPC Class Codes: G01R 31/378 specially adapted for the type of battery or accumulator
• CPC Class Codes: H01M 10/4221 with battery type recognition
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• 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: H02J 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0029 with safety or protection devices or circuits
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A method and apparatus for intelligent battery safety management. Some embodiments of a method for managing battery operation may include receiving a battery pack in a device, where the battery pack is rechargeable and includes a battery cell. In some embodiments data may be collected regarding the operation of the battery cell in the device, and the collected data may be compared with a set of battery reference data. In some embodiments a determination may be made whether the battery cell is non-authentic or defective based at least in part on the comparison between the collected data and the battery reference data.

Claims

1. A method for managing battery operation comprising:

collecting data indicative of the operation of a battery cell in a rechargeable battery pack coupled to a device to be powered by the battery pack;

updating, from a database remote to the device, a set of battery reference data, the updating automatically performed periodically;

comparing the collected data with the set of battery reference data; and

reducing a charging level to maintain the battery pack at less than full capacity in response to the comparison indicating a mismatch between the collected data and battery reference data associated with a battery cell authentic to the device, or in response to the comparison indicating a match between the collected data and battery reference data associated with a non-authentic or recalled battery cell.

2. The method of claim 1, wherein the data collected includes voltage-capacity data characterizing the charging, discharging, or both charging and discharging of the battery cell;

wherein the battery reference data includes reference charging data or reference discharging data associated with at least one of an authentic battery cell, a non-authentic battery cell or recalled battery cell; and

wherein the comparison is between the collected charging/discharging data and the reference charging/discharging data.

3. The method of claim 1, wherein the updating of the reference data is performed when an operating system for the device is not running, and wherein the updating is performed via a connection between a battery management system and the Internet, an intranet, or other data source.

4. The method of claim 1, wherein the reference data includes information to identify the device.

5. The method of claim 1, wherein reducing the charging level to maintain the battery pack at less than full capacity further comprises halting charging of the battery pack and allowing the battery pack to discharge to a voltage corresponding to approximately 50% charge in response the comparison.

6. The method of claim 1, further comprising notifying a user regarding an inconsistency between the collected data and the battery reference data.

7. The method of claim 1, further comprising determining whether the battery pack is authentic for the device based on a comparison between identifying information for a battery control unit embedded in the battery pack and reference data identifying a battery pack that should be utilized by the device.

8. The method of claim 1, wherein the data collected includes information to identify both the battery pack and the device utilizing the battery pack;

wherein the reference data includes at least one of a manufacturer of the device or a serial number of the device; and

wherein the charging level is reduced upon the battery pack identifying information being inconsistent with the reference data.

9. The method of claim 1, wherein the collected data is derived from the battery pack.

10. The method of claim 1, wherein the comparison indicates an inconsistency between the operation of the battery pack and the set of battery reference data.

11. A battery system for a device comprising:

a battery charger to provide power to a rechargeable battery pack, the battery pack including a battery control unit and one or more battery cells; and

a battery management system to collect data regarding the operation of the one or more battery cells, to periodically retrieve a set of battery reference data, to compare the collected data to the set of reference data, and to reduce a charging level of the battery pack to less than full capacity, in response to the comparison indicating a mismatch between the collected data and battery reference data associated with a battery cell authentic to the device, or in response to the comparison indicating a match between the collected data and battery reference data associated with a non-authentic or recalled battery cell.

12. The battery system of claim 11, wherein the battery management system includes a connection to the Internet, an intranet, or other data source, and wherein the battery management system is configured to obtain an update to the reference data using the connection when an operating system of the device is not running.

13. The battery system of claim 12, wherein the update to the reference data includes data regarding recalled batteries.

14. The battery system of claim 11, wherein the collected data includes voltage-capacity data characterizing the charging, discharging, or both charging and discharging of the one or more battery cells;

wherein the battery reference data includes reference charging data or reference discharging data for at least one of an authentic battery cell, a non-authentic battery cell or recalled battery cell; and

wherein the comparison is between the collected charging/discharging data and the reference charging/discharging data.

15. The battery system of claim 11, wherein the battery management system is configured to halt the charging of the battery pack by the battery charger in response to the comparison.

16. The battery system of claim 11, wherein the battery management system is to notify an operating system of the device in response to the comparison.

17. The battery system of claim 11, wherein the device is a mobile computing device.

18. The battery system of claim 11, wherein the data collected includes information to identify both the battery pack and the device utilizing the battery pack;

wherein the reference data includes at least one of a manufacturer of the device or a serial number of the device; and

wherein the battery management system is to reduce the charging level upon determining that the battery pack identifying information is inconsistent with the reference data.

19. The battery system of claim 11, wherein the collected data is derived from the battery pack.

20. The battery system of claim 11, wherein the comparison indicates an inconsistency between the operation of the battery pack and the set of battery reference data.