Battery control and fault detection method

  • US 4,633,418 A
  • Filed: 07/11/1984
  • Issued: 12/30/1986
  • Est. Priority Date: 07/11/1984
  • Status: Expired due to Fees
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First Claim
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1. The method of monitoring the condition of a battery by monitoring at least one parameter, wherein the battery comprises a plurality of units, each unit comprising a given number of cells connected in a given manner, said method comprising the steps of:

  • scanning the units and measuring and storing the value of said parameter for each unit,deriving a mean value of the parameter and determining the individual deviation from said mean value for each unit,calculating a standard deviation using the individual deviations,determining a tolerance value equal to a given number times the standard deviation,comparing the value of the parameter for each unit with said tolerance and flagging any values which differ from the mean by more than said tolerance,displaying the value of said parameter for each unit and highlighting any value which is out of limit,making a decision as to whether there were any out of limit values flagged, if not then initiating another scan, or if any value has been flagged then actuating an alarm.

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