Battery health management and recording

• US 8,825,417 B1
• Filed: 08/28/2009
• Issued: 09/02/2014
• Est. Priority Date: 08/28/2009
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Trela, John Anthony, Krolak, Matthew Joseph
• Primary Examiner(s): Teixeira Moffat, Jonathan C
• Assistant Examiner(s): VO, HIEN XUAN
• Application Number:
  US12/549,677
• Time in Patent Office: 1,831 Days
• Field of Search: 702/63, 320/134
• US Class Current: 702/63
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01M 10/4207 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A method, system, and apparatus are provided for managing battery data. A health monitoring unit monitors a number of battery units for battery data. A data logger stores the battery data. A data processing system identifies performance information from the battery data. A new battery design may be modified based on the performance data. Also, the performance data may be compared to health thresholds for inconsistencies to identify when the number of battery units may need to be serviced.

Claims

1. A method for managing a battery system, the method comprising:

monitoring a number of battery units in the battery system for battery data, wherein the battery data comprises at least one of battery voltage, battery current, and battery temperature;

storing the battery data using a schedule, wherein the schedule is a variable rate, wherein the variable rate is configured to store the battery data when activity exists in the number of battery units, but temporarily postpones the storing of battery data if there have no changes to the battery data after a predetermined period of time;

identifying performance information for the number of battery units in the battery system using the battery data and a history of battery data for battery units of a same type as the number of battery units, the performance data comprising state of life, state of charge, and state of health.

2. The method of claim 1, further comprising:

modifying a current battery design for the battery system based on the performance information to form a new battery design for the battery system.

3. The method of claim 1, further comprising:

comparing the performance information to a health threshold to determine whether an inconsistency is present with at least one battery unit of the number of battery units in the battery system.

4. The method of claim 3, further comprising:

responsive to a determination that the inconsistency is present, servicing the at least one battery unit in the number of battery units.

5. The method of claim 4, wherein the step of servicing the at least one battery unit in the number of battery units further comprises:

testing the at least one battery unit in the number of battery units to determine whether the at least one battery unit in the number of battery units needs to be replaced.

6. The method of claim 1, wherein storing the battery data is over a life of the number of battery units.

7. The method of claim 1, wherein the step of identifying performance information further comprises identifying the performance information:

wherein the state of charge is a comparison between an amount of energy stored in the battery against a maximum amount of energy which the battery is currently able to store;

wherein the state of life is a remaining life of the battery, used to estimate a number of remaining charge/discharge cycles for the battery; and

wherein the state of health is a comparison of a current maximum storage potential against a maximum storage potential when the battery was new, determined by detecting, predicting and isolating different inconsistencies.

8. An apparatus, comprising:

a number of battery units in the battery system; and

a health monitoring unit associated with the number of battery units, the health monitoring unit configured to monitor the number of battery units in the battery system for battery data, wherein the battery data comprises at least one of battery voltage, battery current, and battery temperature for the number of battery units;

store the battery data;

identify performance information for the number of battery units in the battery system using the battery data and a history of battery data for battery units of a same type as the number of battery units, the performance data comprising state of life, state of charge, and state of health, wherein the health monitoring unit includes a data logger configured to store the battery data using a schedule, wherein the schedule is a variable rate, wherein the variable rate is the data logger being configured to store the battery data when activity exists in the number of battery units, but temporarily postpones the storing of battery data if there have no changes to the battery data after a predetermined period of time.

9. The apparatus of claim 8, further comprising:

a vehicle, the vehicle including the battery system, the number of battery units, and the health monitoring unit.

10. The apparatus of claim 8, wherein the health monitoring unit is configured to compare the performance information to a health threshold to determine whether an inconsistency with at least one battery unit of the number of battery units is present.

11. The apparatus of claim 8, wherein the health monitoring unit is configured to store the battery data over a life of the number of battery units.

12. The apparatus of claim 8, wherein the performance information further comprises:

wherein the state of charge is a comparison between an amount of energy stored in the battery against a maximum amount of energy which the battery is currently able to store;

wherein the state of life is a remaining life of the battery, used to estimate a number of remaining charge/discharge cycles for the battery; and

wherein the state of health is a comparison of a current maximum storage potential against a maximum storage potential when the battery was new, determined by detecting, predicting and isolating different inconsistencies.

13. A battery environment, comprising:

a battery system for an aircraft, wherein the battery system is configured to supply power to the aircraft;

a number of battery packs located in the battery system;

a health monitoring unit configured to monitor the number of battery units in the battery system for battery data, wherein the battery data comprises at least one of battery voltage, battery current, and battery temperature for the number of battery units, the health monitoring unit associated with the number of battery packs and including a data logger configured to store the battery data, wherein the health monitoring unit includes a data logger configured to store the battery data using a schedule, wherein the schedule is a variable rate, wherein the variable rate is the data logger being configured to store the battery data when activity exists in the number of battery units, but temporarily postpones the storing of battery data if there have no changes to the battery data after a predetermined period of time; and

a data processing system configured to identify performance information for the number of battery units in the battery system using the battery data and a history of battery data for battery units of a same type as the number of battery units, the performance data comprising state of life, state of charge, and state of health.

14. The battery environment of claim 13, wherein the data processing system is configured to compare the performance information to a health threshold to determine whether there is an inconsistency with at least one battery unit of the number of battery units.

15. The battery environment of claim 14, wherein the health monitoring unit is configured to service the at least one battery unit in the number of battery units in response to a determination that the inconsistency with at least one battery unit of the number of battery units is present, wherein the health threshold is a battery life threshold, and wherein the inconsistency is the at least one battery unit having a remaining life less than the battery life threshold.

16. The battery environment of claim 13, wherein the performance information further comprises:

wherein the state of charge is a comparison between an amount of energy stored in the battery against a maximum amount of energy which the battery is currently able to store;

wherein the state of life is a remaining life of the battery, used to estimate a number of remaining charge/discharge cycles for the battery; and

wherein the state of health is a comparison of a current maximum storage potential against a maximum storage potential when the battery was new, determined by detecting, predicting and isolating different inconsistencies.