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Power supply monitoring apparatus for vehicle

  • US 6,369,460 B1
  • Filed: 03/10/2000
  • Issued: 04/09/2002
  • Est. Priority Date: 04/22/1999
  • Status: Expired due to Term
First Claim
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1. A power supply monitoring apparatus for vehicle, which monitors the state of a power supplied by a battery to an electric appliance, comprising:

  • a cutoff unit, which is located along a power feeding path between the battery and the electric appliance, for interrupting a current flowing along the power feeding path;

    a current detector for detecting the value of a current flowing across the electric appliance; and

    a first command unit, for which a plurality of different reference current values and a plurality of corresponding permitted times are set, for detecting a condition wherein the value of the current detected by said current detector equals or exceeds at least one of the plurality of reference current values, is continued for a period that equals or exceeds ones of the plurality of permitted times that corresponds to the reference current value, and for outputting a command to said cutoff unit to interrupt the current flowing along the power feeding path.

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