JP2010206919A - Backup power supply device, backup power supply system, and power supply switching method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a backup power supply device without hindering the progress of energy saving. <P>SOLUTION: The backup power supply device 1 supplies power from a backup power supply 6 to an apparatus 5 which operates by power supplied from a main power supply 7 when the power supply from the main power supply 7 is interrupted. The backup power supply device also includes: a power interruption detection part 10 as a means for supplying power from the backup power supply 6 only to a part of components of the apparatus 5 when the power supplied from the main power supply 7 is interrupted, and backup power supplies 11 to 13. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a backup power supply device, a backup power supply system, and a power supply switching method.

  Uninterruptible power supply devices that can continue to supply power to equipment when a power failure occurs have become widespread. Furthermore, power supply switching that has multiple systems of power supply means and can continue to supply power to equipment by automatically switching to other power supply means even if an abnormality occurs in one power supply means An apparatus has been proposed (see, for example, Patent Document 1). In the following description, such an uninterruptible power supply device or power supply switching device is called a backup power supply device.

JP 2000-166121 A

  The backup power supply device as described in Patent Document 1 is generally intended for devices that operate on AC (alternating current) 100 V (volt) or AC 200 V commercial power supplied by an electric power company. And the 1st objective of the said backup power supply device exists in the place which supplies the power supply equivalent to a commercial power supply continuously at the time of a power failure. Such a backup power supply device has been developed in a company or factory in response to a request to operate equipment without a break.

  On the other hand, in recent years, promotion of energy saving as a part of global warming prevention measures has become the most important issue. Under these circumstances, the trend of the world has changed from a tendency to increase the productivity by operating the equipment without a break from a tendency to pause the equipment as much as possible and promote energy saving as much as possible. It's getting on.

  Thus, when trying to promote energy saving by stopping the equipment, frequent disconnection of the power supply in the time zone when the equipment is not operating is important. That is, many devices consume standby power even when they are not actually operating. In order to save such standby power, it is necessary not only to turn off the power switch of the device but also to disconnect the device from its power supply source.

  For example, in the case of a device using a transformer, a power switch for the device is often provided only on the secondary winding side of the transformer. In such a case, even if the power switch of the device is turned off, a slight current flows on the primary winding side of the transformer. Although the current per device is small, if the number of devices becomes enormous, such power consumption becomes enormous. In order to avoid this, the power supply must be cut off from the primary winding side of the transformer, that is, the power supply source of the equipment.

  On the other hand, the above-described backup power supply device is a device for continuing the supply of power in the event of an abnormality in the power supply source of a device that continues to operate continuously. Therefore, in a device using the above-described backup power supply device, when the power supply is to be disconnected from the supply source, the backup power supply device connected to the device is simply connected to the device even if the power supply source breaker is turned off. Will back up the power. For this reason, it is necessary to carry out a power supply disconnecting process of disconnecting the power supply of the device from the backup power supply device. However, the operation is not easy.

  That is, the complicated power disconnection process as described above is performed for all devices at the end of each day, and at the start of the next day, the process of reconnecting the power disconnected at the end of the previous day is performed for all devices. It will be. This requires enormous effort and time. Therefore, the backup power supply apparatus described above can be a factor that hinders the promotion of energy saving when viewed from the viewpoint of energy saving.

  Further, when the power source of the device is disconnected from the supply source, both the control system and the drive system in the device are powered off. For this reason, at the start of work the next day, complicated work processes such as starting up the control system and resetting the set values are essential. This goes against energy saving because it reduces the working efficiency of the equipment. However, this cannot be avoided with the conventional backup power supply.

  The present invention has been made under such a background, and an object thereof is to provide a backup power supply device, a backup power supply system, and a power supply switching method that do not hinder the promotion of energy saving.

  The first aspect of the present invention is a viewpoint as a backup power supply apparatus. That is, the backup power supply apparatus of the present invention is a backup power supply apparatus that supplies power for backup to a device that operates by receiving power supply from the main power supply when the main power supply is cut off. When the power supply is turned off, a means for supplying a backup power source is provided only for some of the components of the device.

  Furthermore, it is preferable to include means for remotely monitoring the operation status of the switching means for switching between supply and non-supply of the main power.

  The second aspect of the present invention is a viewpoint as a backup power supply system. That is, the backup power supply system of the present invention includes the backup power supply of the present invention and an uninterruptible power supply as a power supply for the backup power supply.

  The third aspect of the present invention is a viewpoint as a power supply switching method. That is, the power supply switching method of the present invention is a power supply switching method for supplying a backup power supply to a device that operates by receiving power supply from the main power supply when the main power supply is cut off. When the power supply is turned off, there is a step of supplying backup power only to some of the components of the device.

  Furthermore, it is preferable to have a step of remotely monitoring the operation status of the process of supplying the main power.

  Furthermore, when a power failure occurs when the supply of the main power supply is cut off, a step of supplying power from the uninterruptible power supply to the backup power supply can be provided.

  According to the present invention, it is possible to back up the power source of an apparatus without hindering the promotion of energy saving.

1 is an overall configuration diagram of a backup power supply system according to a first embodiment of the present invention. It is a figure which shows the flowchart which shows the operation | movement procedure of the power-off detection part shown in FIG. It is a figure which shows the timing chart which shows the operation timing at the time of the breaker OFF of the breaker in the backup power supply system shown in FIG. 1, a power-off detection part, a backup power supply, and an apparatus power supply device. It is a figure which shows the timing chart which shows the operation timing at the time of the breaker ON of the breaker in the backup power supply system shown in FIG. 1, a power-off detection part, a backup power supply, and an apparatus power supply device. It is a whole block diagram of the backup power supply system which concerns on 2nd embodiment of this invention. It is a figure which shows the modification of the backup power supply system shown in FIG. It is a whole block diagram of the backup power supply system which concerns on 3rd embodiment of this invention. It is a figure for demonstrating the example of the combination of the input / output power supply in the backup power supply device shown in each embodiment. It is a figure for demonstrating the structure of the member for implement | achieving the combination example of the input-output power supply in the backup power supply device shown in each embodiment.

(Regarding the configuration of the backup power supply system 100 according to the first embodiment of the present invention)
The configuration of the backup power supply device 1 that is a component of the backup power supply system 100 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 shows a backup power supply device 1, a device power supply device 2, a breaker 3 as switching means, a remote monitoring device 4 as means for remote monitoring, a device 5 to which power is supplied, and a first AC power source. 6 and an overall configuration diagram of a backup power supply system 100 having a second AC power supply 7. Further, the backup power supply device 1 and the remote monitoring device 4 are connected via a network 8. Further, the backup power supply device 1 is supplied with power from the AC power supply 6 via the AC input terminal 9. Note that the first AC power supply 6 and the second AC power supply 7 may be replaced with one AC power supply.

  Further, the backup power supply apparatus 1 includes a power-off detection unit 10 as means for supplying power, backup power supplies 11, 12, and 13, a communication unit 14 as means for remote monitoring, a power-off detection input terminal 15, and a backup power supply connection. Terminal 16, 17, 18, external operation input terminal 19, and remote monitoring terminal 20.

  In addition, the device power supply device 2 includes a power supply unit 21, a drive unit 22, a servo power supply 23, and a power supply output 24. Further, the breaker 3 includes a switch 30. The device 5 includes a CPU (Central Processing Unit) 50, a memory 51, a cooperation control unit 52, an encoder 53, a servo motor 54, and a cooling fan 55. In the configuration of the device 5, the CPU 50, the memory 51, the cooperation control unit 52, and the encoder 53 are control systems, and the servo motor 54 and the cooling fan 55 are drive systems.

  In the device 5, the CPU 50 and the memory 51 are supplied with DC (direct current) 5 V from the power supply unit 21. Further, the cooperation control unit 52 is supplied with 24 VDC from the power supply unit 21. The cooperation control unit 52 is a function for performing cooperation control between another device 5 and its own device 5, and includes an input / output port, an interface, a communication function, and the like. As described above, the backup power supply system 100 is a system having a plurality of backup power supply devices 1, a plurality of device power supply devices 2, and a plurality of devices 5 connected thereto although not shown. Yes. The encoder 53 is supplied with DC 5V from the drive unit 22. The servo motor 54 is supplied with power from the servo power source 23. The cooling fan 55 is supplied with power from the AC power supply 6 via the power output 24. The device 5 is connected to the AC power source 6 via the device power supply 2 and the switch 30 of the breaker 3.

(About operation of backup power supply system 100)
Next, the operation of the backup power supply system 100 will be described. The backup power supply device 1 of the backup power supply system 100 is supplied with AC100V or AC200V power from the first AC power supply 6 via the AC input terminal 9. Each of the backup power supplies 11 to 13 includes a storage battery (not shown) and charges the storage battery. And if necessary, DC power is supplied from the storage battery to the components of the device 5 connected to the backup power supply connection terminals 16 to 18. Note that the storage batteries of the backup power supplies 11 and 12 output DC5V. Further, the storage battery of the backup power source 13 outputs DC 24V.

  In the example of FIG. 1, the backup power supply 1 backs up the CPU 50, the memory 51, the linkage control unit 52, and the encoder 53 that are the control system of the device 5 even when the switch 30 is disconnected at the end of the factory. The servo motor 54 and the cooling fan 55 are not backed up. That is, assuming that the device 5 is a robot device in the factory, the robot does not operate at the end of the factory. Therefore, it is not necessary to supply power to the drive system of this robot. This saves standby power in the robot drive system.

  On the other hand, it is preferable that the CPU 50, the memory 51, the cooperation control unit 52, and the encoder 53 of the device 5 maintain the state before the power is turned off even when the switch 30 is disconnected. Moreover, it is preferable that these CPU50, the memory 51, the cooperation control part 52, and the encoder 53 can abbreviate | omit the start-up process which takes time at the time of starting work. Therefore, the CPU 50, the memory 51, the cooperation control unit 52, and the encoder 53 are backed up by the backup power supplies 11 to 13 even when the switch 30 of the breaker 3 is turned off.

  Thereby, CPU50, the memory 51, the cooperation control part 52, and the encoder 53 can start an operation | work immediately, without requiring a starting process at the time of the start of the apparatus 5. FIG. Further, the encoder 53 holds the data at the end of work as it is. Therefore, at the start of work, the device 5 can be started from the position at the end of work.

  That is, assuming that the device 5 is a robot, the position adjustment state that has been set by the end of the previous day is stored in the previous day's position adjustment state even at the start of the next day. Thereby, work such as readjustment of the position can be omitted.

  Next, the operation procedure of the power-off detector 10 will be described with reference to the flowchart of FIG. FIG. 2 is a flowchart showing an operation procedure of the power-off detection unit 10. As shown in FIG. 2, the power-off detector 10 monitors the power-off by monitoring the voltage applied to the switch 30 of the breaker 3 or the current flowing through the switch 30 (step S1). Here, when a power interruption occurs (Yes in step S2), the power interruption detection unit 10 issues a backup power ON signal to the backup power supplies 11 to 13 (step S3). As a result, the backup power supplies 11 to 13 start supplying backup power.

  Subsequently, the power-off detector 10 monitors the power recovery by monitoring the voltage applied to the switch 30 of the breaker 3 or the current flowing through the switch 30 (step S4). Here, when the power is restored (Yes in step S5), the power-off detection unit 10 issues a backup power OFF signal to the backup power 11 to 13 (step S6). As a result, the backup power supplies 11 to 13 stop supplying the backup power to the device 5.

  A timing chart of each part in the operation procedure of the flowchart of FIG. 2 is shown in FIGS. The timing chart of FIG. 3 is a timing chart from steps S1 to S3 in FIG. The timing chart of FIG. 4 is a timing chart from steps S4 to S6 in FIG.

  At time T1 in FIG. 3, the switch 30 of the breaker 3 is turned off. The power-off detector 10 detects the OFF state of the switch 30 of the breaker 3 at time T1 in FIG. The power interruption detection unit 10 issues a backup power ON signal at time T2 in FIG. The time from time T1 to time T2 in FIG. 3 is about 1-2 ms (milliseconds). The backup power supplies 11 to 13 receive the backup power ON signal issued from the power-off detector 10 and start DC output from time T3 in FIG. The time from time T1 to time T3 in FIG. 3 is 10 ms or less.

  On the other hand, when the switch 30 of the breaker 3 is turned off at time T1 in FIG. 3, the device power supply device 2 is cut off from the power supply from the second AC power supply 7. However, the power supply unit 21, the drive unit 22, and the servo power supply 23 are provided with power storage members such as capacitors (not shown). Therefore, the device power supply device 2 continues to supply power to the device 5 until 10 to 20 ms after the switch 30 of the breaker 3 is turned off at time T1 in FIG. Therefore, the device power supply device 2 continues to supply power to the device 5 until time T4 in FIG. Thus, the backup power supply device 1 and the device power supply device 2 supply power to the device 5 at the same time from time T3 to time T4 in FIG. However, regarding the cooling fan 55, when the switch 30 of the breaker 3 is turned off, the power supply from the second AC power supply 7 is immediately cut off. Since the servo motor 54 is supplied with power only from the servo power source 23, it receives power from only the servo power source 23 until time T4, and stops when time T4 has elapsed.

  In this way, there is a slight time lag “time of (T3−T1)” from when the switch 30 of the breaker 3 is turned off to when the supply of power for backup is started. However, this time lag “time of (T3-T1)” is “time of (T4-T1)” (> “(T3-T1) within the time during which power supply from the device power supply 2 to the device 5 continues. )) ”), So there is no problem.

  Further, the switch 30 of the breaker 3 is turned on at time T5 in FIG. When detecting that the switch 30 of the breaker 3 is in the ON state, the power-off detection unit 10 issues a backup power-off signal at time T7. The time from time T5 to time T7 is an arbitrarily set time. That is, the user can arbitrarily set the time from when the power-off detection unit 10 detects that the switch 30 of the breaker 3 is turned on at time T5 to when the backup power-off signal is issued.

  Further, after the power-off detection unit 10 issues a backup power OFF signal to the backup power supplies 11 to 13 at time T7 in FIG. 4, the backup power supplies 11 to 13 actually supply the backup power at time T8 in FIG. It takes about 100 ms to stop.

  Further, the time from when the switch 30 of the breaker 3 is turned on at time T5 in FIG. 4 until the device power supply device 2 starts supplying power to the device 5 at time T6 in FIG. 4 is arbitrarily set time. . However, as described above, the power supply unit 21, the drive unit 22, and the servo power supply 23 have power storage members such as capacitors, and the startup time “(( It takes several hundreds of milliseconds as "time of T6-T5)". Accordingly, the set time “(T7−T5)” from when the power-off detector 10 detects the ON state of the switch 30 of the breaker 3 to when the backup power-off signal is issued is at least the device power supply 2 Sets a time longer than the time until the power supply to the device 5 starts. Therefore, “time of (T7−T5)” ≧ “time of (T6-T5)”.

  In FIG. 4, there are an arbitrarily set time “(T7-T5) time” in the power-off detector 10 and an arbitrarily set time “(T6-T5) time” in the device power supply device 2. Explaining these setting procedures, first, the user sets an arbitrary setting time until the output of the device power supply device 2 is started. This is a few hundred ms by default. Subsequently, the user sets a time “(T7−T5)” equal to or longer than the time set in the device power supply device 2 in the power-off detection unit 10.

(About remote monitoring by the remote monitoring device 4)
Next, remote monitoring of the backup power supply device 1 by the remote monitoring device 4 will be described. The power-off detection unit 10 and the remote monitoring device 4 of the backup power supply device 1 are connected via a communication unit 14 and a network 8. The communication unit 14 is a device that performs communication using TCP / IP (Transmission Control Protocol / Internet Protocol) or the like if the network 8 is the Internet. If the network 8 is a LAN (Local Area Network), it is a LAN card or the like. Or the communication apparatus which compounded these may be sufficient. Alternatively, the remote monitoring device 4 may be directly connected to the communication unit 14 of the backup power supply device 1 by a dedicated line such as an electric wire or an optical fiber instead of the network 8.

  The remote monitoring device 4 is a device capable of centrally monitoring a plurality of other backup power supply devices 1 (not shown). For example, the operating statuses of the backup power supplies 11 to 13 are displayed on the display screen of the remote monitoring device 4 as monitoring results. Alternatively, the remote monitoring device 4 may print and output the monitoring result on paper by a printer or the like. Alternatively, the remote monitoring device 4 may automatically transmit the monitoring result to the administrator by e-mail or the like.

(About external operation input)
Further, the backup power supply device 1 forces the power-off detection unit 10 via the external operation input terminal 19 regardless of the state of the switch 30 of the breaker 3 to forcibly turn on or off the backup power. Can be issued. The external operation input may be input to the power-off detection unit 10 from a remote location via the network 8 by the communication unit 14.

(Regarding the effect according to the first embodiment of the present invention)
According to the backup power supply system 100, the second AC power supply 7, the device power supply device 2, and the device 5 can be completely disconnected by turning off the switch 30 of the breaker 3 when the device 5 is closed. Further, by the backup of only the control system of the device 5 by the backup power supply device 1, startup work and setting work of the CPU 50, the memory 51, the cooperation control unit 52, the encoder 53, and the like can be omitted when the device 5 is started. Moreover, since the power failure detection part 10 can detect the power failure also when an unpredictable power failure occurs, the power failure countermeasure is also possible.

  Thus, according to the backup power supply system 100, the work resumption time at the start of work can be shortened with the minimum necessary power consumption. Thereby, the power supply of the apparatus power supply device 2 and the apparatus 5 can be easily disconnected from the second AC power supply 7. As a result, wasteful standby power consumption can be eliminated.

  Furthermore, the convenience of the administrator can be improved by centrally managing a large number of backup power supply devices 1 by the remote monitoring device 4. This can also enhance the management system.

  Further, backup can be performed by an external operation input regardless of the state of the switch 30 of the breaker 3. For this reason, it is possible to take a countermeasure in advance when a power failure can be predicted, and the reliability and convenience can be improved.

(About the backup power supply system 100A according to the second embodiment of the present invention)
Next, a backup power supply system 100A according to a second embodiment of the present invention will be described with reference to FIG. The backup power supply system 100A is slightly different from the backup power supply system 100. In the following, the same or similar members as those in the first embodiment will be described using the same or the same reference numerals, the description thereof will be omitted or simplified, and different members will be mainly described.

  The backup power supply system 100 </ b> A includes an uninterruptible power supply 60 in the first AC power supply 6 in the backup power supply system 100. The first AC power supply 6 also serves as the second AC power supply 7. According to this, at the time of a power failure of the first AC power supply 6 while the device 5 is in operation, the operation of the device 5 can be continued by the power supplied from the uninterruptible power supply device 60 as before.

  On the other hand, when the switch 30 of the breaker 3 is in the OFF state, the uninterruptible power supply 60 and the equipment power supply 2 are completely disconnected, and no standby power is wasted by the equipment power supply 2 or the equipment 5. At this time, the uninterruptible power supply 60 simply supplies power to the power interruption detection unit 10, the backup power supplies 11 to 13, and the communication unit 14 in the backup power supply 1, and there is no waste in power consumption.

(Regarding the effect according to the second embodiment of the present invention)
According to the backup power supply system 100A, in the event of a power failure of the first AC power supply 6 during the operation of the device 5, the device 5 can continue to be operated by the uninterruptible power supply device 60 as before. Further, during the suspension of the device 5, only the backup power supply device 1 is connected to the uninterruptible power supply device 60, and wasteful standby power consumption in the device power supply device 2 and the device 5 can be eliminated. Furthermore, even if the power failure of the first AC power supply 6 occurs for a long time while the device 5 is stopped, the storage batteries of the backup power supplies 11 to 13 can continue to be charged by the power supply from the uninterruptible power supply 60. For this reason, it is possible to cope with a power outage of the first AC power supply 6 for a long time while the device 5 is stopped.

(About backup power supply system 100B which is a modification of backup power supply system 100A)
Next, a backup power supply system 100B, which is a modification of the backup power supply system 100A, will be described with reference to FIG. The backup power supply system 100B includes an uninterruptible power supply 60A in the first AC power supply 6 that also serves as the second AC power supply 7. The uninterruptible power supply 60A only supplies power to the backup power supply 1. Therefore, the capacity of the uninterruptible power supply 60A can be made extremely small, and the uninterruptible power supply 60A can be made inexpensive.

  In this backup power supply system 100B, the apparatus power supply apparatus 2 cannot be backed up when the first AC power supply 6 is powered off. Therefore, the apparatus 5 stops at the time of the power failure of the 1st alternating current power supply 6. FIG. However, the control system of the device 5 is backed up by the backup power supply device 1. For this reason, when the 1st alternating current power supply 6 recovers from a power failure, the apparatus 5 can be restarted immediately. The current power outage time in Japan is extremely short. In view of this, an inexpensive small-capacity uninterruptible power supply that backs up only the backup power supply apparatus 1 rather than including an expensive large-capacity uninterruptible power supply apparatus 60 that can back up both the device power supply apparatus 2 and the backup power supply apparatus 1. It can be said that it is more efficient to provide the power supply device 60A.

  Alternatively, as another modification, similarly to the first embodiment, a second AC power supply 7 of another system that supplies power to the device power supply device 2 may be provided separately from the first AC power supply 6. Good. In this case, if the second AC power source of another system that supplies power to the device power supply device 2 is used as a highly reliable power source, the necessity of providing an uninterruptible power supply device on the device power supply device 2 side is reduced. In this case, the second AC power supply 7 supplies power to the device power supply device 2 via the breaker 3.

  Furthermore, as another modification, another uninterruptible power supply device may be provided between the device power supply device 2 and the breaker 3 of the backup power supply system 100B. According to this, since the same system configuration as that of the backup power supply system 100A is realized by using two uninterruptible power supplies, the reliability can be extremely increased. In addition to the two uninterruptible power supply devices, a second AC power supply 7 may be provided.

(About the backup power supply system 100C according to the third embodiment of the present invention)
Next, a backup power supply system 100C according to a third embodiment of the present invention will be described with reference to FIG. The backup power supply system 100C is slightly different from the backup power supply system 100. In the following, the same or similar members as those in the first embodiment will be described using the same or the same reference numerals, the description thereof will be omitted or simplified, and different members will be mainly described.

  The backup power supply system 100C includes a transformer 70 in the device power supply apparatus 2A in addition to the backup power supply system 100. Further, the device 5A includes a CPU heat dissipation fan 71. Further, the backup power supply device 1A includes a backup power supply 72 and a backup power supply connection terminal 73. The first AC power source 6 and the second AC power source 7 may be a single AC power source 6 as in the first embodiment.

  For example, the backup power source 72 rectifies the AC input from the first AC power source 6, charges the storage battery thereby, and converts the DC output of the storage battery into an AC output by an inverter.

  For example, when the second AC power supply 7 is AC100V, the transformer 70 is for setting the output voltage of the transformer 70 to AC24V. The CPU heat dissipation fan 71 belongs to the control system of the device 5 and assists the heat dissipation of the CPU 50. The CPU heat radiation fan 71 is assumed to operate at 24 VAC.

  As described above, even when the control system includes a member that operates with an AC power supply, the backup power supply apparatus 1A can include the backup power supply 72 for backing up the AC power supply. The backup power source 72 is for backing up AC 24V AC power source, and supplies power to the CPU heat dissipation fan 71 via the backup power source connection terminal 73.

  In this way, according to the backup power supply system 100C, it is possible to back up not only members that operate with a DC power supply but also members that operate with an AC power supply. In addition to the CPU cooling fan 71 described above, examples of members that use an AC power supply in the control system include CPU liquid cooling pumps and lamps that display the operating status of the control system.

(Other variations)
The embodiment of the present invention can be variously modified without departing from the gist thereof. For example, in the example of the backup power supply system 100C, an example has been described in which it is possible to cope with whether the output side that performs backup is an AC power supply or a DC power supply. Similarly, the input side may be an AC power supply or a DC power supply. An example of such an input / output power source combination will be described with reference to FIG.

  The example of FIG. 8 (1) has an alternating current (AC) power input and a three-way direct current (DC) power output. The example of FIG. 8 (2) has an alternating current (AC) power input and a two-way direct current (DC) power output and a one-way alternating current (AC) power output. The example of FIG. 8 (3) has an alternating current (AC) power supply input and a three-way alternating current (AC) power supply output. The example of FIG. 8 (4) has a direct current (DC) power input and a three-way direct current (DC) power output. The example of FIG. 8 (5) has a direct current (DC) power input and a one-way direct current (DC) power output and a two-way alternating current (AC) power output. The example of FIG. 8 (6) has a three-way alternating current (AC) power output with a direct current (DC) power input.

  Further, a configuration example of members for realizing the input / output combination of each example shown in FIG. 8 will be described with reference to FIG.

  FIG. 9A is an example of alternating current (AC) power input and direct current (DC) power output. In this example, the voltage of the AC power supply on the input side is converted into a desired voltage by the transformer 80. Further, AC power output from the transformer 80 is converted into DC power using the rectifier 81. The output of the rectifier 81 is charged in the storage battery 82 and becomes a direct current output.

  FIG. 9 (2) is an example of alternating current (AC) power supply input and alternating current (AC) power supply output. In this example, the voltage of the AC power supply on the input side is converted into a desired voltage by the transformer 80. Further, AC power output from the transformer 80 is converted into DC power using the rectifier 81. The output of the rectifier 81 is charged in the storage battery 82 and becomes a DC power source. The output of the storage battery 83 is converted into an AC output by the inverter 83.

  FIG. 9 (3) is an example of direct current (DC) power input and direct current (DC) power output. In this example, the voltage of the DC power supply on the input side is converted into a desired voltage by the converter 84. The output of the converter 84 is charged in the storage battery 82 and becomes a direct current output.

  FIG. 9 (4) shows an example of direct current (DC) power input and alternating current (AC) power output. In this example, the voltage of the DC power supply on the input side is converted into a desired voltage by the converter 84. The output of the converter 84 is charged in the storage battery 82 and becomes a DC power source. The DC power source of the storage battery 82 is converted into an AC output by the inverter 83.

  In this way, the backup power supply apparatus 1, 1 </ b> A can handle any combination of AC power supply and DC power supply.

  The backup power supplies 11 to 13 and 72 are modules that can be attached to and detached from the backup power supply apparatus 1 and 1A, and have arbitrary specifications (DC input, AC input, DC output, AC output, various types) according to the backup target. It is preferable that an arbitrary number of modules having voltage values and various capacities can be detachably configured.

  Further, the backup power supply devices 1 and 1A and the device power supply devices 2 and 2A may be integrally configured. Alternatively, the backup power supply device 1, 1 </ b> A and the device power supply devices 2, 2 </ b> A may all be incorporated in the device 5.

DESCRIPTION OF SYMBOLS 1, 1A ... Backup power supply device 2, 2A ... Apparatus power supply device, 3 ... Breaker (switching means), 4 ... Remote monitoring apparatus (means to monitor remotely) 5, 5A ... Equipment, 6 ... 1st alternating current power supply, 7 ... 2nd AC power supply (main power supply), 8 ... Network (means for remote monitoring), 9 ... AC input terminal, 10 ... Power-off detector (means for supplying power), 11, 12, 13, 72 ... Backup power supply (means for supplying power), 14... Communication unit (means for remote monitoring), 15... Power interruption detection input terminal, 16, 17, 18, 73 .. backup power connection terminal, 19. 20: Remote monitoring terminal, 21 ... Power supply unit, 22 ... Drive unit, 23 ... Servo power supply, 24 ... Power supply output, 30 ... Switch, 50 ... CPU, 51 ... Memory, 52 ... Cooperation control unit, 53 ... Encoder 54 ... Servo motor, 55 ... Cooling fan, 60, 60A ... Uninterruptible power supply, 70, 80 ... Transformer, 71 ... CPU cooling fan, 81 ... Rectifier, 82 ... Storage battery, 83 ... Inverter, 84 ... Converter, 100, 100A, 100B, 100C ... Backup power supply system

Claims (6)

In a backup power supply device that supplies power for backup when the supply of the main power is cut off to a device that operates by receiving power supply from the main power supply,
When supply of the main power supply is cut off, the apparatus includes means for supplying the backup power supply to a part of the components of the device.
A backup power supply characterized by that. The backup power supply device according to claim 1,
Means for remotely monitoring the operating status of the switching means for switching between supply and non-supply of the main power;
A backup power supply characterized by that. The backup power supply device according to claim 1 or 2,
An uninterruptible power supply as a power supply for this backup power supply,
A backup power supply system comprising: In a power supply switching method for supplying a backup power supply to a device that operates by receiving power supply from a main power supply when the main power supply is cut off,
When the supply of the main power is cut off, the method includes a step of supplying the backup power only to some of the components of the device.
A power supply switching method characterized by that. In the power feeding switching method according to claim 4,
Remotely monitoring the operation status of the process of supplying the main power source;
A power supply switching method characterized by that. In the power feeding switching method according to claim 4 or 5,
When a power failure occurs when the supply of the main power is cut off, the power supply from the uninterruptible power supply to the backup power supply,
A power supply switching method characterized by that.

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