Battery measurement method

  • US 5,760,587 A
  • Filed: 06/28/1995
  • Issued: 06/02/1998
  • Est. Priority Date: 06/28/1995
  • Status: Expired due to Term
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First Claim
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1. A method for detecting an electrical conductivity leakage path in a vehicle having a plurality of batteries each with a positive and negative terminal, said vehicle also having a chassis ground, each battery being isolated by design from said chassis ground, said method comprising the steps of:

  • (a) providing a voltage divider for each said battery, each said voltage divider having an output with a voltage at a potential between the potentials of the positive and negative terminals of the voltage divider'"'"'s respective battery;

    (b) providing a plurality of electrical connections, each switchable between open and closed, each between a said voltage divider output and chassis ground;

    (c) closing the switchable electrical connection between a first said voltage divider output and chassis ground;

    (d) measuring the voltage at said first voltage divider output with the switchable electrical connection between that voltage divider output and chassis ground closed; and

    (e) opening the switchable electrical connection between said first voltage divider output and chassis ground.

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