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Method and system for monitoring battery stacks

  • US 20070182377A1
  • Filed: 12/29/2006
  • Published: 08/09/2007
  • Est. Priority Date: 12/29/2005
  • Status: Active Grant
First Claim
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1. A monitoring system for monitoring voltages in a stack of batteries, each battery comprising a plurality of cells, the monitoring system comprising:

  • a plurality of monitoring units, a monitoring unit being associated with each battery and being operable to measure voltage across one or more selected cells, first monitoring unit of the plurality of monitoring units being for measurement of a cell, or group of cells, of one battery to provide a first voltage measurement;

    a second monitoring unit of the plurality of monitoring units, arranged to measure the same cell, or group of cells, of the same battery to provide a second voltage measurement; and

    , means to calculate, based on the first and second measurements, a correction factor which is useable to correct a set of measurements made by one of the first and second monitoring units.

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