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Systems, methods and circuits for determining micro-short

  • US 8,049,465 B2
  • Filed: 10/10/2007
  • Issued: 11/01/2011
  • Est. Priority Date: 10/10/2007
  • Status: Active Grant
First Claim
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1. A method for predicting battery failure, the method comprising:

  • providing a battery comprising at least one cell;

    determining a time rate of change of a state of charge of the cell during a period of no activity of a connected external load;

    comparing the time rate of change of the state of charge of the cell against a threshold; and

    determining a potential failure condition based on a value of self-discharge providing an indication of micro-shorts within the battery as a result of the comparison of the time rate of change of the state of charge of the cell with the threshold.

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