JP3340041B2 - Power-on control device with disconnection prevention function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power-on control apparatus having a power-off prevention function capable of stably supplying power to a load unit, and particularly to a case where a part of an internal power switching unit has failed. The present invention also relates to a power-on control device with a power-off prevention function capable of stably supplying power to a plurality of load units.

[0002]

2. Description of the Related Art In general, a power-on control device supplies power from a power source to one or a plurality of load sections stably. For example, as described in Japanese Patent Application Laid-Open No. 4-112633, A command control unit that commands power supply to the unit by a pulse signal, an interface module that receives the pulse signal from the command control unit as an input, converts the pulse signal into a level signal, outputs the signal, and outputs a data strobe signal; A power control unit that supplies power to a plurality of load units in accordance with the level signal, even when the command control unit has failed, the power control unit is connected to the load unit by a data strobe signal from the interface module. There has been proposed a device that stably supplies power by maintaining power supply.

As another power-on control device, as described in Japanese Patent Application Laid-Open No. 62-293938, a plurality of individual power-on / off devices for powering on / off provided for a plurality of load units. And a centralized power on / off device for parallel input / output of power from the power supply unit to a plurality of load units. There has been proposed an apparatus that performs a collective power-on / off operation by a power-on / off device.

[0004]

The power-on control device according to the prior art described above is constructed so that the power supply can be maintained even if the command control unit fails, for example. There is a problem that power supply may be cut off due to a failure of the interface module. In order to prevent this problem, it is conceivable to improve the redundancy of the device by configuring the command control unit, the interface module, and the power control unit in multiple stages, but it is difficult to configure the reliability at low cost. There was a problem that said. It is also conceivable to increase the number of loads in order to transmit the input power to the load, but in this case, there is a problem that the input capacity increases. Further, since the general outlet capacity is 15 A, there is a problem that it is difficult to connect a power-on control device for controlling a large number of loads to such a general outlet.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-described disadvantages of the prior art, and to provide a power-on control device with a disconnection prevention function capable of stably supplying power to a load portion to prevent power-off. It is to provide. Another object of the present invention is to provide a power supply control device including a plurality of power supply modules for supplying power to a plurality of load units, and to stabilize the power to the load units even when a failure occurs in a certain power supply module. It is an object of the present invention to provide a power-on control device with a disconnection prevention function that can be supplied to prevent power-off. Still another object of the present invention is to provide a power-on control device with a disconnection prevention function that can stably supply power to a plurality of load units in parallel from a common power supply unit and prevent power-off. That is.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned disadvantages of the prior art, the invention according to the first aspect of the present invention is arranged between a power supply unit for supplying power and a load unit for consuming power, and In a power-on control device with a cut-off prevention function for stably supplying power from a unit to a load unit, a first switching unit that switches on or off power from the power supply unit, A control unit driven by the applied power, a second opening / closing unit that supplies or disconnects power from the power supply unit to the load unit by driving the control unit, and a power supply by the second opening / closing unit. A third switching unit connected in parallel with the second switching unit for supplying power to the load unit, wherein the control unit holds the power supply to the load unit by the third switching unit after the power supply. It is characterized by comprising. That is, when a failure occurs in the second or third switching unit by connecting the second switching unit and the third switching unit in parallel and providing a control unit that holds the power supply of the third switching unit. Even in this case, the power is stably supplied to the load unit by any one of the power supply lines.

According to a second aspect of the present invention, there are provided a plurality of power supply modules arranged between a plurality of load units consuming power from a power supply unit for supplying power, and the power supply unit supplies power from the power supply unit. In a power-on control apparatus with a disconnection prevention function for stably supplying power to a plurality of load units via a plurality of power supply modules, a first opening / closing unit for turning on / off power from the power supply unit; A second opening / closing unit that supplies or disconnects electric power to / from the load unit via the opening / closing unit; and a second opening / closing unit that supplies power to the load unit in parallel with power supply by the second opening / closing unit .
A plurality of power supply modules including a second switchgear and a third switchgear connected in parallel, and a first power supply module of the plurality of power supply modules.
And a control circuit that is driven by power supply from an opening / closing unit, wherein the plurality of power supply modules drive the control unit by power supply from the first opening / closing unit, 3 to supply power to the load unit by the switching unit, and the control circuit is configured to hold the power supply to the plurality of load units by the third switching unit of the plurality of power supply modules after the power supply. Features. That is,
A control circuit driven in parallel by the power supply of a plurality of power supply modules is provided. Even when a failure occurs in some of the power supply modules, the drive of the control circuit is maintained. To supply power stably.

The invention according to a third aspect of the present invention further comprises a plurality of hierarchically divided power supply modules arranged between a plurality of load units consuming power from a power supply unit for supplying power, and A power-on control device with a disconnection prevention function for stably supplying power to a plurality of load units via a plurality of power supply modules, wherein the plurality of power supply modules supply or cut off power from a power supply unit. An opening / closing section, a second opening / closing section for supplying or disconnecting power through the first opening / closing section to / from the load section, and a second opening / closing section for supplying power to the load section in parallel with the power supply by the second opening / closing section . With two opening and closing parts
A third switching unit connected in parallel, and a control unit that controls power supply to a load unit of the third switching unit, wherein a higher-level power supply module among the plurality of hierarchically divided power supply modules is a third power supply module. The power supply by the third switching unit is started by the power supply by the first and second switching units, and the control unit of the next-stage power supply module is driven to drive the third power supply module of the next-stage power supply module.
The power supply to the load unit is performed by the switching unit. That is, by sequentially driving the control unit from the upper power supply module to the lower power supply module, power is stably supplied from the common power supply unit to a plurality of load units in parallel, thereby preventing power cutoff. Can be.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a power-on control device with a disconnection prevention function according to an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram illustrating a schematic configuration of a power-on control device according to the present embodiment, FIG. 2 is a diagram illustrating a schematic configuration of a power-on control device according to the second embodiment, and FIG. 3 is a power-on control according to the third embodiment. FIG. 2 is a diagram illustrating a schematic configuration of an apparatus.

A power-on control apparatus 1 with a disconnection prevention function according to the embodiment shown in FIG. 1 has an input terminal 51 connected to a power supply unit 50 and an output terminal 52 connected to an external load device 7.
A switch 4 (first open / close unit) for turning on / off the power supply from the input terminal 51; and a relay switch 3A (second switch) for turning on / off the power supply between the switch 4 and the output terminal 52. Opening and closing section) and the relay switch 3A
A relay circuit 3 for controlling ON / OFF of the DC power supply; a DC power supply 6 for supplying power by turning on the switch 4 to convert AC power to DC power; A predetermined procedure triggered by the power supply, for example, a control unit 5 that drives the relay circuit 3 to turn on the relay switch 3A after a certain time has elapsed, and a connection between one end of the input terminal 51 and one end of the output terminal 52 It includes a relay switch 2A (third switch) inserted in a circuit connected in parallel, and a relay circuit 2 supplied with power from between the output terminals 52 and controlling on / off of the relay switch 2A. The control unit 5 also includes a control signal 8 from the outside.
Alternatively, the relay circuit 3 is driven by turning on / off the switch 10.

The power-on control device 1 configured as described above
When power from the power supply unit 50 is supplied by turning on the switch 4, power from the DC power supply unit 6 is supplied to the control unit 5, and the relay circuit 3 turns on the relay switch 3A under the control of the control unit 5. By doing so, electric power via the switch 4 and the relay switch 3A is supplied from the output terminal 52 to the external load device 7. At this time, the load device 7
A part of the power supplied to is also supplied to the relay circuit 2,
When the relay circuit 2 turns on the relay switch 2A, a power supply line via the relay switch 3A and a power supply line via the relay switch 2A are configured in parallel, and power is supplied via the parallel line. It is supplied to the load circuit 7.

The power-on control device 1 according to the present embodiment will now be described.
This is because even if a failure occurs in the control unit 5, the relay circuit 3, or the DC control unit 6 and the relay switch 3A is turned off by mistake, the ON state of the relay switch 2A is maintained by power supply. , The power from the power supply unit 50 through the switch 4 and the relay switch 2A.
Can be supplied to Conversely, even when the relay circuit 2 fails, the power supply via the relay switch 3A is continued.

As described above, the power-on control device 1 according to the present embodiment includes the power supply line by the relay switch 3A which is turned on when the switch 4 is turned on, and the power supply by the relay switch 2A which is turned on by turning on the relay switch 3A. By laying the lines together, the power supply lines are multiplexed to improve the margin for circuit failure,
Accidental disconnection of power supply can be reduced. That is, the stop of the power-on control device 1 is performed by any or all of the control unit 5 / relay circuit 3 / DC control unit 6 and the relay circuit 2
Is limited to the case where a fault occurs at the same time, so that the probability of erroneous stopping can be extremely reduced. When a failure occurs in any of the circuits, the power supply control circuit 1 notifies the failure to an external administrator by notifying or displaying a lamp or the like, and also through the relay switch 2A or 3A until the failure is recovered. The power supply may be maintained by a power supply line. In addition, the relay switch 2
It is also possible to further increase the number of stages of the power supply line for A, and to further improve the margin for circuit failure.

Next, a power-on control device according to a second embodiment of the present invention will be described with reference to FIG. The power-on control device 1000 with a disconnection prevention function shown in FIG. 2 includes a plurality of power supply modules 100 to 102, which will be described later, a DC power supply from the plurality of power supply modules 100 to 102, and a relay circuit 2 of each power supply module. And a control circuit 200 for commonly controlling the power supply modules 100
102 to 102 are configured to individually supply power to the plurality of load devices 300 to 301. The control circuit 200 operates when power is supplied from any of the power supply modules 100 to 102.

[0015] As shown in FIG.
A switch 4 for turning on / off the power supply from the input terminal 51, a relay switch 3A for turning on / off the power supply between the switch 4 and the output terminal 52, and ON / OFF of the relay switch 3A. A relay circuit 3; a DC power supply unit 6 that is supplied with power when the switch 4 is turned on to convert AC power into DC power; and is driven by power from the DC power supply unit 6 and is predetermined by the power supply. The relay circuit 3
And a relay switch 2 inserted in a circuit for connecting between one end of the input terminal 51 and one end of the output terminal 52 in parallel.
A and a relay circuit 2 for controlling the on / off of the relay switch 2A according to an instruction from the control circuit 200.

The power-on control device 10 constructed as described above
00 is the switch 4 of each power supply module 100 to 102
When the power is supplied from the power supply unit 50 by turning on the power, the power from the DC power supply unit 6 is supplied to the control unit 5, and the relay circuit 3 turns on the relay switch 3A under the control of the control unit 5, Electric power via the switch 4 and the relay switch 3A is supplied from the output terminal 52 to the external load device 7. At this time, a part of the electric power from the DC power supply unit 6 is supplied to the control circuit 200, and the control circuit 200 controls the relay circuit 2 in the module and turns on the relay switch 2A, whereby the relay switch 3A is turned on. And a circuit via the relay switch 2A are configured in parallel, and power is supplied to the load devices 300 to 302 via the parallel circuit.

Now, a power-on control device 1 according to the present embodiment.
000 indicates that a fault has occurred in the control unit 5 / relay circuit 3 / DC control unit 6 of a certain power supply module and the relay switch 3A
Is turned off by mistake, the ON state of the relay switch 2A is maintained by the control circuit 200 to which power is supplied from another power supply module. The power can be supplied to the load device via the relay switch 2A. Conversely, even when the relay circuit 2 fails, the power supply via the relay switch 3A is continued.

As described above, in the power-on control device 1000 according to the present embodiment, even when a circuit failure of a certain power supply module occurs, the control circuit 200 driven by another power supply module operates the relay switch 2A inside the failure module. , The power supply to the load device can be maintained, and the margin for circuit failure can be improved. That is, the power-on control device 1000 according to the present embodiment includes a plurality of power supply modules 100 to 10.
By driving the control circuit 200 according to 2, even if a failure occurs in a certain power supply module, the drive of the control circuit 200 can be maintained by another power supply module, and a failure due to power interruption can be avoided.

Next, a power-on control device according to a third embodiment of the present invention will be described with reference to FIG. The power-on control device with a disconnection prevention function illustrated in FIG. 3 includes a power supply unit in which a plurality of outlets 701 to 703 are provided in a power main line 700,
A plurality of power-on control devices 500 to 502 are connected to supply power to a plurality of load devices 600 to 603. The plurality of power-on control devices 500 to 502 include a signal transmission unit 510/512 and a signal reception unit 511 inside.
/ 513 and the like, and the power-on control device 50
It is assumed that 0 is set at the highest level, and the hierarchy is initially set by, for example, a dip switch or the like so that the hierarchy goes down in order.

The power-on control device thus configured is
When the switch 4 in each device is turned on, the load devices 600 to which the highest-order power-on control device 500 is connected are connected.
Power is supplied to 602 by an internal two-stage relay switch as in the above-described embodiment, and when the start of power supply from the device 500 to a plurality of loads is completed, the signal transmission unit 510 outputs a power-on completion signal. Is transmitted to the signal receiving unit 511 of the power-on control device 501 at the next stage, and the power-on control device 501 that has received the power-on completion signal starts supplying power and completes the power supply start for the plurality of loads. Then, the signal transmission unit 512 transmits a power-on completion signal to the signal reception unit 513 of the power-on control device 502 at the next stage,
Hereinafter, similarly, the operation is performed so as to sequentially supply power to each device.

The power-on control device according to the present embodiment supplies power sequentially from the upper power-on control device to the lower power source as described above, so that power is supplied from the outlets 701 to 703 of each power-on control device. Therefore, power supply to a large number of loads from a general outlet can be controlled.

[0022]

As described above, according to the first aspect of the present invention, the first opening / closing section for turning on / off the power supply from the power supply section, and the electric power via the first opening / closing section. A control unit driven by the control unit, a second opening / closing unit for supplying or disconnecting power through the first opening / closing unit to / from the load unit by driving the control unit, and power supply by the second switching unit in parallel. Parallel connection with the second switching unit for supplying power to the load unit
And a third switching unit connected thereto , wherein the control unit holds the power supply to the load unit by the third switching unit after the power is supplied, so that the power from the power supply unit is multi-staged. Since the power is supplied through the power supply line, the power can be stably supplied to prevent the power from being cut off.

Further, according to the invention described in claim 2 of the present application, a control circuit driven in parallel by the power supply of a plurality of power supply modules is provided, and even if a failure occurs in some power supply modules. The driving of the control circuit can be maintained, and the power can be stably supplied to the load unit by the second switching unit.

Further, according to the invention described in claim 3 of the present application, out of the plurality of hierarchically divided power supply modules, the upper power supply module is supplied with the third power by the second opening / closing unit to supply the third power supply module.
The power supply to the load unit is started by supplying power to the load unit by the third switching unit of the power supply module of the next stage by driving the control unit of the power supply module of the next stage by starting the power supply by the switching unit of the next stage. Power can be stably supplied from the power supply unit to a plurality of load units in parallel to prevent the power supply from being turned off.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a power-on control device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a schematic configuration of a power-on control device according to a second embodiment of the present invention.

FIG. 3 is a diagram showing a schematic configuration of a power-on control device according to a third embodiment of the present invention.

FIG. 4 is a diagram showing a schematic configuration of a power supply module according to a second embodiment of the present invention.

[Explanation of symbols]

1: power-on control device, 2: relay, 2A: contact, 3:
Relay, 3A: contact, 4: switch, 5: control unit, 6:
DC power supply unit, 7: load device, 8: control signal, 9: terminal,
10: power switch, 100-102: power transmission control module, 200: control circuit, 300-301: load device, 1000: power-on control device, 500-502: power-on control device, 510 and 512: signal transmission unit, 51
1 and 513: signal receiving unit, 600 to 603: load device, 700: power main line, 701 to 703: outlet.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akinori Hashimoto 1 Horiyamashita, Hadano-shi, Kanagawa Hitachi Information Technology Co., Ltd. (56) References JP-A-62-293938 (JP, A) JP-A-62-89428 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02J 1/00 H02J 3/00 H02J 13/00

Claims (3)

(57) [Claims] 1. A power-on control device with a disconnection prevention function, which is disposed between a power supply unit that supplies power and a load unit that consumes power, and that stably supplies power from the power supply unit to the load unit. A first opening / closing section for turning on / off the power supply from the power supply section, a control section driven by electric power via the first opening / closing section, and the first opening / closing section driven by the control section A second opening / closing unit that supplies or disconnects electric power to / from the load unit via
A third switching unit that supplies power to the load unit in parallel with the power supply by the second switching unit, and a third switching unit that is connected in parallel with the second switching unit . A power-on control device with a disconnection prevention function, wherein the power supply to a load unit is maintained by an opening / closing unit. And a plurality of power supply modules arranged between a plurality of load units consuming power from a power supply unit that supplies power, wherein a plurality of power supply modules are provided through the plurality of power supply modules via the plurality of power supply modules. What is claimed is: 1. A power-on control device with a disconnection prevention function for stably supplying a load to a load unit, comprising: a first switching unit for switching on or off the power supply from the power supply unit; A second opening / closing unit for supplying or disconnecting the power to / from the load unit, and a second opening / closing unit for supplying power to the load unit in parallel with power supply by the second opening / closing unit .
A plurality of power supply modules including a switching unit and a third switching unit connected in parallel; and a control circuit driven by supplying power through the first switching unit of the plurality of power supply modules; The plurality of power supply modules drive the control unit by the power supply by the first switching unit to supply the power to the load unit by the third switching unit in parallel with the power supply by the second switching unit. A power-on control device with a disconnection prevention function, wherein a control circuit is configured to maintain power supply to a plurality of load units by a third switching unit of a plurality of power supply modules after power supply. 3. A plurality of power supply modules arranged between a plurality of load units consuming power from a power supply unit for supplying power and divided into layers, and the power from the power supply unit is transmitted through the plurality of power supply modules. A power on / off control device with a disconnection prevention function for stably supplying power to a plurality of load units, wherein the plurality of power supply modules includes a first opening / closing unit that supplies or disconnects power from a power supply unit; A second opening / closing unit for turning on / off the power unit via the first opening / closing unit, and a parallel connection with the second opening / closing unit for supplying power to the load unit in parallel with the power supply by the second opening / closing unit A third switching unit, and a control unit that controls power supply to a load unit of the third switching unit. Of the plurality of hierarchically divided power supply modules, a higher-level power supply module is a first and a second power supply module. The second opening / closing section supplies power to The power supply to the load unit is started by starting the power supply by the open / close unit and driving the control unit of the power supply module of the next stage by the third open / close unit of the power supply module of the next stage. Power-on control device with disconnection prevention function.