Power supply control system

Patent metadata

Field	Value
Publication number	US-2016248262-A1
Application number	US-201615145859-A
Country	US
Kind code	A1
Filing date	May 4, 2016
Priority date	Nov 12, 2013
Publication date	Aug 25, 2016
Grant date	—

Abstract

A power supply control system includes: a current sensor as a first detector detecting current flowing in each controller in an operating state of each controller; a first current controller turned on to supply a driving current to each controller in the operating state of each controller and turned off to disconnect the driving current supply to each controller based on a determination result; a second current controller turned on to supply a dark current to each controller in a power-saving state of each controller and turned off to disconnect the dark current supply to each controller in the operation state of each controller; a dark current sensor as a second detector detecting a voltage drop amount in the power-saving state of each controller; and an anomaly determinator determining existence of anomaly in the power-saving state of each controller based on a detection result obtained from the second detector.

First claim

What is claimed is:

1 . A power supply control system, comprising:
a predetermined number of controllers which can transfer between an operating state in which operations performed by a plurality of electronicses are respectively controlled and a power-saving state in which control of the electronicses is suspended according to a predetermined condition; a monitoring controller for respectively monitoring and controlling current supplied to each of the controllers; a first detector which detects current that flows in each of the controllers in the operating state of each of the controllers; a first current controller which, by controlling of the monitoring controller, supplies a driving current to each of the controllers in the operating state of each of the controllers, and when current that exceeds a predetermined threshold value is detected at the first detector, disconnects the driving current supply to each of the controllers; a second current controller which, by controlling of the monitoring controller, supplies a dark current to each of the controllers by being switched from the first current controller in the power-saving state of each of the controllers, and disconnects the dark current supply to each of the controllers in the operating state of each of the controllers; a second detector which detects a voltage drop amount based on change of the dark current in the power-saving state of each of the controllers; and an anomaly determinator which determines existence of anomaly in the power-saving state of the controllers based on whether or not a predetermined voltage drop amount has been detected by the second detector.

2 . The power supply control system according to claim 1 ,wherein when it is determined by the anomaly determinator that anomaly exists in the power-saving state of the controller, the monitoring controller controls to perform initialization to return each of the controllers to an ordinary state.

3 . The power supply control system according to claim 1 , wherein:
the first detector includes current sensors each of which is provided for each switch that constitutes the first current controller and each of which inputs a detection output to a CPU that constitutes the monitoring controller; and the second detector includes a dark current sensor which is connected between all of the controllers and an input side of the CPU that constitutes the monitoring controller via backflow prevention diodes, and a sense resistor which is connected between an output side of the CPU that constitutes the monitoring controller and the backflow prevention diodes via a bypass switch that constitutes the second current controller.

Assignees

• Yazaki Corp

Inventors

• Maruyama Akinori

Classifications

• G06F1/3206

  Monitoring of events, devices or parameters that trigger a change in power modality · CPC title

• G06F1/28

  Supervision thereof, e.g. detecting power-supply failure by out of limits supervision · CPC title

• H02J1/108

  having arrangements for blocking reverse current flow, e.g. using diodes (H02J1/12 takes precedence) · CPC title

• B60R16/03 Primary

  for supply of electrical power to vehicle subsystems {or for (circuit arrangements for charging batteries H02J7/00)} · CPC title

• H02J4/00 Primary

  Circuit arrangements for mains or distribution networks not specified as AC or DC; Circuit arrangements for mains or distribution networks combining AC and DC sections or sub-networks (arrangements using intermediate DC-AC-DC conversion H02J1/002; arrangements using high-voltage DC [HVDC] links H02J3/36) · CPC title