Power supply monitoring apparatus for vehicle
First Claim
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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Accused Products
Abstract
A power supply monitoring apparatus, for which a plurality of different preset reference current values and corresponding permitted times are provided, includes: a cutoff device; current detection circuits; overcurrent detection circuits; an idle-up command circuit; and a low voltage detection circuit. When an overcurrent detection circuit detects a current value equaling or exceeding at least one of the preset reference current values, and when that condition continues for a time equaling or exceeding a permitted time corresponding to the pertinent reference current value, the circuit transmits a command to the cutoff device to interrupt the current supplied to a power feeding path. Further, when the idle-up command circuit detects an increase in a supplied current, an idle-up command is issued.
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Citations
5 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5)
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Specification