IP Library Granted Patent US 7,761,389
Granted Patent B2
US 7,761,389 · App. 11/843,876 · Granted Jul 20, 2010

Method for anomaly prediction of battery parasitic load

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Quick Facts
Patent No.
US 7,761,389
App. No.
11/843,876
Granted
Jul 20, 2010
Kind
B2
Abstract

Anomaly prediction of battery parasitic load includes processing input data related to a state of charge for a battery and a durational factor utilizing a machine learning algorithm and generating a predicted start-up state of charge. Warnings are issued if the predicted start-up state of charge drops below a threshold level within an operational time.

Claims (29)

1. A method for anomaly prediction of parasitic load on a battery comprising:

processing input data related to a state of charge for the battery and a durational factor, wherein said processing comprises a machine learning algorithm and is operative to generate a predicted start-up state of charge; and

indicating a warning if said predicted start-up state of charge is below a threshold level within an operational time.

2. The method of claim 1 , wherein said machine learning algorithm comprises fuzzy logic.

3. The method of claim 2 , wherein said fuzzy logic updates on the basis of said input data, said predicted start-up state of charge, and a prediction error.

4. The method of claim 3 , wherein said fuzzy logic correlates a temporal indication to said input data, such that said processing indicates temporal trends in the input data.

5. The method of claim 2 , wherein said machine learning algorithm further comprises a neural network.

6. The method of claim 1 , wherein said machine learning algorithm comprises a neural network.

7. The method of claim 6 , wherein said neural network updates on the basis of said input data, said predicted start-up state of charge, and a prediction error.

8. The method of claim 1 , wherein said input data relating to said state of charge comprises a running state of charge.

9. The method of claim 1 , wherein said input data relating to said state of charge comprises a battery state of health.

10. The method of claim 1 , wherein said input data relating to said durational factor comprises a key-off time.

11. The method of claim 1 , wherein said threshold level is a predetermined critical level, said critical level being a calculated lowest charge that will support a start-up event.

12. The method of claim 1 , wherein said threshold level is a predetermined critical level, said critical level being a predetermined measure higher than a calculated lowest charge that will support a start-up event.

13. The method of claim 1 , wherein said threshold level is a threshold function based upon said durational factor.

14. The method of claim 1 , further comprising:

measuring an actual state of charge of said battery;

comparing said actual state of charge to said predicted start-up state of charge; and

initiating a warning if said comparison indicates that said actual state of charge has dropped more than a threshold drop below said predicted start-up state of charge.

15. The method of claim 1 , wherein said warning comprises an alert by means of a communications network.

16. The method of claim 1 , wherein said warning comprises reduced functionality of devices utilizing said battery.

17. The method of claim 1 , wherein said processing further comprises heuristic techniques for the purpose of overcoming inconsistencies in said input data.

18. The method of claim 1 , wherein said processing further comprises trend analysis whereby a battery state of health for said battery is developed.

19. A method for anomaly prediction of parasitic load on a battery in a motor vehicle comprising:

receiving input data related to a running state of charge for the battery and a key-off time;

processing said input data to create a predicted start-up state of charge for said battery, wherein said processing comprises a machine learning algorithm; and

initiating a warning if said predicted start-up state of charge is below a threshold level before a threshold time.

20. The method of claim 19 , wherein said machine learning algorithm comprises fuzzy logic operable to analyze and identify said input data into a plurality of fuzzy groups indicating a degree to which said input data conforms to historical input data sets, said historical input data sets being correlated to resulting prediction errors.

21. The method of claim 20 , wherein said machine learning algorithm comprises a layered feed-forward neural network operative to adapt to multiple iterations of said input data and related prediction errors.

Assignments (12)
RELEASE OF SECURITY INTEREST Recorded Nov 7, 2014
From: WILMINGTON TRUST COMPANY
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 034185/0587 →
CHANGE OF NAME Recorded Feb 10, 2011
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 025781/0035 →
SECURITY AGREEMENT Recorded Nov 8, 2010
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: WILMINGTON TRUST COMPANY
Reel/Frame 025324/0057 →
RELEASE OF SECURITY INTEREST Recorded Nov 5, 2010
From: UAW RETIREE MEDICAL BENEFITS TRUST
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025314/0946 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025245/0656 →
SECURITY AGREEMENT Recorded Aug 28, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UAW RETIREE MEDICAL BENEFITS TRUST
Reel/Frame 023162/0140 →
SECURITY AGREEMENT Recorded Aug 27, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 023156/0264 →
RELEASE OF SECURITY INTEREST Recorded Aug 21, 2009
From: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023155/0880 →
RELEASE OF SECURITY INTEREST Recorded Aug 20, 2009
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023124/0670 →
SECURITY AGREEMENT Recorded Apr 16, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
Reel/Frame 022554/0479 →
SECURITY AGREEMENT Recorded Feb 4, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 022201/0448 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2007
From: MEDASANI, SWARUP; JIANG, QIN; SRINIVASA, NARAYAN; ZHANG, YILU; BARAJAS, LEANDRO; KAPSOKAVATHIS, NICK
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 019738/0089 →