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Vehicle electrical system

  • US 6,784,635 B2
  • Filed: 07/17/2003
  • Issued: 08/31/2004
  • Est. Priority Date: 08/30/2001
  • Status: Expired due to Fees
First Claim
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1. A vehicle electrical system comprising:

  • a battery having a grounded terminal and an ungrounded terminal;

    an electrical system controller;

    a charging regulator having an output connected to the ungrounded terminal of the battery and responsive to a control signal received on a control input;

    an electrical power generator connected to supply electrical power to the charging regulator;

    instrumentation connected to the electrical system controller for providing measurements of current discharged from the battery, current delivered to the battery, and battery temperature;

    a program residing on the electrical system controller for execution, the program utilizing battery temperature, battery temperature rate of change and measured current discharged as inputs for periodically setting a value for the control signal; and

    means for coupling the control signal to the control input of the charging regulator.

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