Vehicular use power feed apparatus
First Claim
1. A vehicular use power feed apparatus comprised of a battery and a plurality of power distribution devices connected in the form of a loop via power feed lines, power being supplied from each of the power distribution devices to an electric load mounted in the vehicle, whereineach of the plurality of power distribution devices comprises;
- a first switch means connected to one power feed line;
a second switch means connected to another power feed line;
a power feed state monitoring means for monitoring the state of power supplied through the first switch means and the second switch means;
a signal transmitting means for performing the communication with an adjoining power distribution device; and
a controlling means for controlling the operating states of the first and second switch means by referring to information from the signal transmitting means and information from the power feed monitoring means.
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Accused Products
Abstract
A vehicular use power feed apparatus comprising a battery and a plurality of power distribution units connected in a loop via power feed lines. Each power distribution unit has a current monitoring circuit, a current amount determination circuit, and a current direction determination circuit, detects the direction of current and magnitude of current flowing through the power feed line, and thereby detects an occurrence of a short-circuit. A control unit exchanges information regarding occurrence of short-circuits with adjoining power distribution units via a multiplex signal transmission unit so as to pinpoint the trouble point. The control unit operates the relay switch circuits on the two sides to break the connection so as to isolate the trouble point in cooperation with the control unit of the adjoining power distribution unit. The other relay switch circuit is operated to establish a connection so as to establish a new power feed line.
72 Citations
20 Claims
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1. A vehicular use power feed apparatus comprised of a battery and a plurality of power distribution devices connected in the form of a loop via power feed lines, power being supplied from each of the power distribution devices to an electric load mounted in the vehicle, wherein
each of the plurality of power distribution devices comprises; -
a first switch means connected to one power feed line; a second switch means connected to another power feed line; a power feed state monitoring means for monitoring the state of power supplied through the first switch means and the second switch means; a signal transmitting means for performing the communication with an adjoining power distribution device; and a controlling means for controlling the operating states of the first and second switch means by referring to information from the signal transmitting means and information from the power feed monitoring means. - View Dependent Claims (2, 3)
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4. A vehicular use power feed apparatus comprising a battery,
a main power distribution device directly receiving the supply of power from the battery, at least one sub power distribution devices, power feed lines connecting power feed portions between the main power distribution device and adjoining sub power distribution devices for supplying the power from the battery, and information transmission signal lines for transmitting information between the main power distribution device and at least one sub power distribution device, power being supplied from the battery to loads connected to the sub power distribution devices via the power feed lines, wherein, the main power distribution device comprises: -
a controlling means, a signal transmitting means for transmitting information with the sub power distribution devices via the information transmission signal lines and for transmitting information with the controlling means; at least two power feed lines for feeding power from the battery to the sub power distribution devices, at least two switch means for connecting or disconnecting the at least two power feed lines, and a trouble detecting means for detecting trouble in the power feed system outside of the switch means; a sub power distribution device has; a controlling means, a signal transmitting means for transmitting information with other sub power distribution devices via the information transmission signal line and for transmitting information with the controlling means, a trouble detecting means for detecting trouble in a power feed line connected to its own power distribution device, and at least one switch means for breaking the supply of power to the power feed line connected to the its own power distribution; and the controlling means in the main power distribution device and the sub power distribution device control the switch means of their own power distribution devices by referring to the result of detection of the trouble detecting means in their own power distribution devices and the result of detection of trouble in the other power distribution devices received via the information transmission signal line. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A vehicular use power feed apparatus comprising:
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a power feed line for electrically connecting a battery and equipment mounted in a vehicle driven by the battery; a switch means provided at a predetermined position on the power feed line; a connection fault detecting means for detecting a connection fault of a section of the power feed line located between it and the adjoining switch means by an overheat detection system; and a controlling means for instructing breakage of the connection to the switch means at the two ends of a section of the power feed line in which a connection fault is detected. - View Dependent Claims (17, 18)
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19. A vehicular use power feed apparatus comprising:
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a battery; power feed lines for electrically connecting the battery and equipment mounted in the vehicle driven by the battery; switch means provided at predetermined positions on the power feed lines; an interference detection use conductive line disposed in a section between adjoining switch means near the periphery of a power feed line or near the periphery of a power feed line via an insulating layer; an interference detecting means for monitoring a potential of the interference detecting use conductive line and detecting the interference of the interference detection use conductive line with the outside based on the result of the monitoring; a current detecting means for detecting a current flowing through a power feed line; a current abnormality detecting means for detecting an abnormality in the current based on the detected current; an interference section specifying means for specifying the section in which the interference occurred in the interference detection use conductive line based on the result of detection of the interference detecting means; and a controlling means for determining a time from the detection of the abnormality in the current to when the connection is to be broke by the switch means or based on the specified section and instructing the breaking of the connection to the switch means based on this determined time. - View Dependent Claims (20)
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Specification