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Method for reconnecting a relay in a vehicle battery management system

  • US 9,381,816 B2
  • Filed: 02/13/2015
  • Issued: 07/05/2016
  • Est. Priority Date: 10/20/2014
  • Status: Active Grant
First Claim
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1. A method for reconnecting a relay in a vehicle battery management system comprising:

  • measuring an insulation resistance between a positive electrode or a negative electrode of a battery and a vehicle chassis;

    turning off each of relays connected between the positive and negative electrodes of the battery and a load when the measured insulation resistance is less than a reference value;

    re-measuring the insulation resistance; and

    performing a relay-on sequence for turning on each of the relays when the resistance value of the re-measured insulation resistance is greater than the reference value,wherein a relay reconnection number of the relay-on sequence, based on a repetition of the measuring and re-measuring, is set and limited so as to not exceed a threshold value.

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