JPH06309069A - Backup power unit - Google Patents

Abstract

(57) [Summary] [Purpose] To extend the battery life of the backup power supply and eliminate the need for manual switching work of the backup power supply. [Composition] A commercial power supply detector 2 that detects whether the commercial power supply is in a normal state or a power failure occurrence state and outputs a detection signal corresponding to each state, and a commercial power supply to a computer when the commercial power supply is normal. Normal power supply control function to allow power supply, power supply control function to allow power supply from the battery 5 to the computer when a commercial power failure occurs, and data saving from the computer after a commercial power failure occurs Accordingly, an automatic on / off device 7 having a power stop control function at the time of a power failure for stopping the power supply from the battery 5 to the computer when the command signal is output is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, FA equipment and OA.
The present invention relates to a backup power supply device used for storing data in equipment and the like, and particularly to a backup power supply device suitable for extending the battery life of the backup power supply.

[0002]

2. Description of the Related Art Conventionally, for example, in FA equipment and OA equipment equipped with a computer, an external storage device, etc., a backup power supply device for storing data is attached in order to prevent data from being destroyed when a sudden power failure occurs. Often. For example, in the example shown in FIG. 3, a computer 5 including a computer main body 50, a display 51, a keyboard 52 and the like.
3 is connected to a backup power supply device 54, and the backup power supply device 54 is connected to a commercial power supply (not shown). The commercial power supply is supplied to the computer 53 via the backup power supply device 54.

The conventional backup power supply 54 is, for example, as shown in FIG. 4, a noise filter 55, a commercial power supply detector 56, a charger 57, an inverter 58, a battery 59,
The power supply switching device 60 and the backup power supply switch 61 are provided. When the commercial power source is normal, the commercial power source detector 56 detects the commercial power source through the noise filter 55, and the power source switching device 60 has a built-in changeover switch 60A.
Is switched to the contact a side, commercial power is supplied to the computer via the path K1. In this case, the battery 59
When the amount of charge is insufficient, the commercial power source charges the battery 59 via the route K2 passing through the charger 57.

On the other hand, when a commercial power source power failure occurs, the commercial power source detector 56 detects that the commercial power source is off and sends a signal indicating the commercial power source off state to the power source switching device 60. Since the switching device 60 switches the built-in changeover switch 60A to the contact b side, the DC power supply of the battery 59 is converted into AC power supply by the inverter 58 and supplied to the computer via the path K3. Further, conventionally, the on / off switching operation of the backup power supply device 54 has been performed manually.

[0005]

However, the above-mentioned prior art has the following problems. When the power failure period extends for a long time, the battery 59 of the backup power supply 54 continues to be discharged and the amount of charge is reduced even when the data storage of the computer 53 is completed by the power supplied from the battery 59 of the backup power supply 54. There was a problem that everything was discharged. Battery 59 shortens the life of battery 59 when full discharge occurs.
There is a problem that it takes a long time to complete the charging, the amount of power used increases due to the long charging time of the battery 59, which is contrary to the energy saving. When the backup power switch 61 of the backup power supply 54 is to be turned off after the data storage of the computer 53 is completed, a person must be present near the backup power supply 54 without fail. There was a problem that the switch 61 had to be turned on.

[0006]

It is an object of the present invention to improve the disadvantages of the above-described conventional example, and in particular, by automatically turning off the backup power supply after the data storage of the computer is completed by the battery of the backup power supply when a power failure occurs. SUMMARY OF THE INVENTION It is an object of the present invention to provide a backup power supply device which extends the battery life of the backup power supply and eliminates the conventional manual switching work of the backup power supply.

[0007]

According to the present invention, there is provided a battery which is connected between an electronic device and a commercial power source and which is provided with a battery and which stores the data of the electronic device from the battery to the electronic device when a power failure of the commercial power source occurs. In the backup power supply device that supplies the power of
Commercial power source state detection means for detecting whether the commercial power source is in a normal state or a power failure occurrence state and outputting a normal state detection signal or a power failure occurrence state detection signal according to the detection result, the commercial power source and the battery Connected to the electronic device and a normal state detection signal output from the commercial power supply state detection means, a power failure occurrence state detection signal, or data storage output from the electronic device upon completion of data storage of the electronic device. A power supply control means for controlling power supply from the commercial power supply or the battery to the electronic device based on a completion signal, wherein the power supply control means outputs a normal state detection signal from the commercial power supply state detection means. From the commercial power source to the electronic device, the normal-time power supply control function and the commercial power source state detection means A power supply control function at the time of a power failure that permits power supply from the battery to the electronic device when a power generation state detection signal is output, and data storage from the electronic device after power is supplied from the battery to the electronic device It is configured to have a power stop control function at the time of a power failure that stops the power supply from the battery to the electronic device when the completion signal is output. This is intended to achieve the above-mentioned object.

[0008]

According to the present invention, the power supply control means supplies the power from the commercial power supply to the electronic device when the commercial power supply status detecting means outputs the normal state detection signal indicating that the commercial power supply is in the normal state. Allow On the other hand, the power supply control means outputs a power failure occurrence state detection signal indicating that the commercial power source is in a power failure occurrence state from the commercial power source status detection means,
Allow the power supply from the battery to the electronic device. As a result, the data of the electronic device is saved. After that, the power supply control means stops the power supply from the battery to the electronic device when the data storage completion signal is output from the electronic device supplied with the power from the battery due to the occurrence of the power failure of the commercial power supply. As a result, it is possible to prevent the discharge of the battery from continuing and the discharge of the battery to occur as in the conventional case, so that the life of the battery can be extended. Also,
Since it is not necessary to manually turn on / off the backup power source as in the conventional case, it is possible to save labor. Further, as described above, since it is possible to prevent the problem that the battery is completely discharged, it is possible to eliminate the phenomenon that the battery that has been fully discharged takes a long time to be charged and the amount of electric power used is increased, which leads to energy saving. Can be achieved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments to which the backup power supply device of the present invention is applied will be described below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of the backup power supply device of this embodiment. The backup power supply device comprises a noise filter 1, a commercial power supply detector 2, a charger 3, an inverter 4, a battery 5, and a power supply switching device. 6, an automatic on / off device 7, and a backup power switch 8 are provided. The backup power supply device of this embodiment is characterized in that an automatic on / off device is connected between the power supply switching device 6 and the backup power supply switch 8. In this case, the backup power switch 8 is normally turned on.

The configuration of the backup power supply device will be described in detail. The noise filter 1 removes noise from the commercial power source and supplies the commercial power source with the noise removed to the power source switching device 6 and the charger 3. ing. The commercial power source detector 2 detects whether the commercial power source is normal or a power failure occurs in the commercial power source, outputs a detection signal S1 to the automatic on / off device 7, and outputs a detection signal S3 to the power source switching device 6. It is like this. The charger 3 supplies the commercial power supplied via the noise filter 1 to the battery 5 to charge the battery 5.

The inverter 4 converts a DC power source charged in the battery 5 into an AC power source, and supplies it to a power source circuit (not shown) of a computer via a power source switching device 6, an automatic on / off device 7 and a backup power source switch 8. It is supposed to be supplied. The power supply switching device 6 has a built-in changeover switch 6A and outputs power failure occurrence information T to a CPU (not shown) of a computer when a power failure occurs. The power supply switching device 6 outputs a detection signal S3 output from the commercial power supply detector 2. Based on
The selector switch 6A is switched to the contact a side when the commercial power supply is normal, and the selector switch 6A is switched to the contact b side when the commercial power supply fails.

As shown in FIG. 2, the automatic on / off device 7 has a structure in which two normally open relays 9 and 10 are connected in parallel. The normally open relay 9 includes a relay coil 11 and a relay contact 12. The normally open relay 10 includes a relay coil 1
3 and a relay contact 14, and a commercial power source detector 2
The relay contact 12 of the normally-open relay 9 and the relay contact 14 of the normally-open relay 10 are appropriately opened and closed based on a detection signal S1 from the CPU 1 and a command signal S2 from the CPU of the computer.

When the commercial power source is normal, the changeover switch 6A of the power source changeover device 6 is switched to the contact a side. When the commercial power source is normal, the detection signal S1 output from the commercial power source detector 2 to the automatic on / off device 7 continues to be in the on state, so that the relay coil 11 of the normally open relay 9 of the automatic on / off device 7 is turned on. Next, relay contact 12
Is supposed to close. Further, during normal operation of the computer, the command signal S2 output from the CPU of the computer to the automatic on / off device 7 continues to be in the on state, so that the relay coil 13 of the normally open relay 10 of the automatic on / off device 7 is It is turned on and the relay contact 14 is closed. As a result, commercial power is supplied to the power circuit of the computer.

When a commercial power failure occurs, the changeover switch 6A of the power supply changeover device 6 is switched to the contact b side. As a result, power is supplied from the battery 5 to the power supply circuit of the computer. When a power failure occurs, the detection signal S1 output from the commercial power source detector 2 to the automatic on / off device 7 is turned off, so that the relay coil 11 of the normally open relay 9 of the automatic on / off device 7 is turned off and the relay contact Twelve open. When a power failure occurs, the power switching device 6 outputs the power failure occurrence information T to the CPU of the computer, so that the CPU of the computer saves the data. After saving the data, the command signal S2 output from the CPU of the computer to the automatic on / off device 7 is turned off.
The relay coil 13 of the normally open relay 10 of the automatic on / off device 7 is turned off, and the relay contact 14 is opened. As a result, the power supply from the battery 5 to the power supply circuit of the computer is stopped.

When the commercial power source is restored, the changeover switch 6A of the power source changeover device 6 is switched to the contact a side. When the power is restored, the commercial power detector 2 automatically turns on /
Since the detection signal S1 output to the off device 7 is turned on, the relay coil 11 of the normally open relay 9 of the automatic on / off device 7 is turned on and the relay contact 12 is closed. Further, at the time of restoration, the command signal S2 output from the CPU of the computer to the automatic on / off device 7 is turned on, so that the normally open relay 10 of the automatic on / off device 7 is turned on.
The relay coil 13 is turned on and the relay contact 14 is closed. As a result, commercial power is supplied again to the power circuit of the computer.

Next, the operation of the backup power supply unit of this embodiment constructed as described above will be explained.

When the commercial power source is normal, the power source switching device 6
The changeover switch 6A is switched to the contact a side. The commercial power supply detector 2 continues the ON state of the detection signal S1 output to the automatic on / off device 7 when the commercial power supply is detected. As a result, the relay coil 11 of the normally open relay 9 of the automatic on / off device 7 is turned on, and the relay contact 12 is closed.

At this time, the CPU of the computer continues the ON state of the command signal S2 output to the automatic ON / OFF device 7 during normal operation. As a result, the relay coil 13 of the normally open relay 10 of the automatic on / off device 7 is turned on, and the relay contact 14 is closed. As a result, commercial power is supplied to the power circuit of the computer.

On the other hand, when the commercial power source fails, the power source switching device 6 switches the selector switch 6A to the contact b side. As a result, power is supplied from the battery 5 to the power supply circuit of the computer. The commercial power source detector 2 turns off the detection signal S1 output to the automatic on / off device 7 when a power failure occurs. Along with this, the relay coil 11 of the normally open relay 9 of the automatic on / off device 7 is turned off, and as a result, the relay contact 12 is opened. At this time, the power supply from the battery 5 to the power supply circuit of the computer continues.

Further, since the power supply switching device 6 outputs the power failure occurrence information T to the CPU of the computer when a power failure occurs, the CPU of the computer saves the data and, after saving the data, sends it to the automatic on / off device 7. The output command signal S2 is turned off. As a result, the relay coil 13 of the normally open relay 10 of the automatic on / off device 7 is turned off, and as a result, the relay contact 14 is opened. As a result, the battery 5
Stops supplying power to the power circuit of the computer.

After that, when the commercial power source is restored, the power source switching device 6 switches the changeover switch 6A to the contact a side. The commercial power source detector 2 turns on the detection signal S1 output to the automatic on / off device 7 when the commercial power source is restored. As a result, the relay coil 11 of the normally open relay 9 of the automatic on / off device 7 is turned on, and the relay contact 12 is closed.

The CPU of the computer turns on the command signal S2 output to the automatic on / off device 7 when the commercial power supply is restored. This allows the automatic on / off device 7
As a result of the relay coil 13 of the normally open relay 10 being turned on, the relay contact 14 is closed. As a result, commercial power is supplied to the power circuit of the computer.

As described above, according to this embodiment, when the power supply from the battery 5 of the backup power supply unit completes the data storage of the computer at the time of the power failure of the commercial power supply, the power supply circuit of the computer is switched from the battery 5 to the power supply circuit. Since the power supply to the battery is automatically stopped, it is possible to prevent the discharge of the battery from continuing and the total discharge from occurring as in the conventional case, and it is possible to extend the life of the battery 5.

Further, according to this embodiment, it is not necessary to manually turn on / off the backup power source as in the conventional case, so that the labor can be saved. Further, as described above, since it is possible to prevent the problem that the battery 5 is completely discharged, it is possible to eliminate the conventional phenomenon that the battery, which has been completely discharged, takes a long time to be charged and the amount of power used increases. It becomes possible to save energy.

[0026]

As described above, according to the backup power supply device of the present invention, when the data saving completion signal is output from the electronic device after the power failure of the commercial power source, the power supply from the battery to the electronic device is stopped. Therefore, it is possible to prevent the discharge of the battery from continuing and the full discharge from occurring as in the conventional case. As a result, it is possible to extend the life of the battery, and the backup power source can be manually operated as in the conventional case. Since it is not necessary to perform the on / off switching work of the battery, it is possible to save labor, and it is possible to prevent the problem that the battery is fully discharged as described above. It is possible to solve the phenomenon that the generated battery takes time to charge and the amount of power used increases, and as a result, it becomes possible to save energy. It is possible to achieve the results.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a configuration of a backup power supply device according to an embodiment of the present invention.

FIG. 2 is a circuit diagram showing a configuration of an automatic on / off device according to the present embodiment.

FIG. 3 is a schematic diagram showing a connection configuration example of a backup power supply device and a computer.

FIG. 4 is a circuit diagram showing a configuration of a conventional backup power supply device.

[Explanation of symbols]

 1 noise filter 2 commercial power supply detector as commercial power supply state detection means 3 charger 4 inverter 5 battery 6 power supply switching device 7 automatic on / off device as power supply control means 8 backup power supply switch 9 as first normally open relay Normally open relay 10 Normally open relay as second normally open relay 11,13 Relay coil 12,14 Relay contact

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Internal reference number FI technical display location 7165-5B G06F 1/00 335 A 7165-5B 341 R

Claims (2)

[Claims] 1. A connection between an electronic device and a commercial power supply,
A backup power supply device that includes a battery and supplies a power source for storing data of the electronic device from the battery to the electronic device when a power failure of the commercial power source occurs, is connected to the commercial power source, and the commercial power source is in a normal state. Between the commercial power supply and the battery and the electronic device, which detects whether the power supply is in a power failure occurrence state or not and outputs a normal status detection signal or a power failure occurrence status detection signal in accordance with the detection result. The commercial power source is connected based on a normal state detection signal, a power failure occurrence state detection signal output from the commercial power source state detection means, or a data storage completion signal output from the electronic device when data storage of the electronic device is completed. A power supply control means for controlling power supply from the battery to the electronic device. When the control means outputs a normal state detection signal from the commercial power supply state detection means, a normal time power supply control function that permits power supply from the commercial power supply to the electronic device, and from the commercial power supply state detection means Power supply control function at power failure occurrence that allows power supply from the battery to the electronic device when a power failure occurrence state detection signal is output, and data storage from the electronic device after power supply from the battery to the electronic device A backup power supply device, comprising: a power supply stop control function at the time of a power failure, which stops power supply from the battery to the electronic device when a completion signal is output. 2. The power supply control means comprises a first normally open relay connected between the commercial power supply and the battery and the electronic device, and a second normally connected relay connected in parallel to the first normally open relay. And a normal state detection signal or a power failure occurrence state detection signal output from the commercial power source state detection means is input to the first normally open relay, and the second normally open relay is provided. The backup power supply device according to claim 1, wherein a data storage completion signal is input to the normally open relay from the electronic device.