JP2015050913A - Power control system - Google Patents

Abstract

A power supply control system that realizes high efficiency of a power supply unit of an ICT device even at a light load is provided. A power supply control system that controls a power source and a storage battery that supply power to a load of an ICT device, and when the ICT device is not accessed within a predetermined time, the ICT device is put into a sleep mode, An execution unit that generates a first signal; a first control unit that determines to supply power from the storage battery to the load based on the first signal; and a second control unit that generates a second signal; And a second control unit that generates a signal for stopping the operation of the power source based on the second signal. [Selection] Figure 4

Description

  The present invention relates to a power supply control system, and more particularly, to a power supply control system that supplementarily supplies power to an ICT apparatus.

  In recent years, there is a demand for power saving of a power supply device that supplies power consumption of a load of an ICT device installed in an ICT (Information and Communication Technology) facility. In this specification, an ICT facility refers to a data center, a communication machine room, a server room, and the like, and an ICT device refers to a server, a storage, a router, and the like. The load on the ICT device refers to a network board, a motherboard, and the like. The power supply device refers to a load power supply unit that directly supplies power to the load of the ICT device, and a power supply unit that supplies power to the load power supply unit.

  Usually, the DC power converted from AC power by a DC power supply system including the power supply unit is supplied to the load power supply unit of the ICT apparatus. The DC power supplied to the load power supply unit of the ICT device is consumed by the load of the ICT device. The power consumption of the load of the ICT device varies depending on the state of the ICT device, and the efficiency of the power supply device that supplies power to the ICT device also changes. Therefore, a DC power supply system that supplies power to the ICT device with high efficiency in accordance with fluctuations in power consumed by the load of the ICT device has been studied.

  In the present specification, the efficiency of the power supply device refers to a value obtained by dividing the power value input to the power supply device from the power value output from the power supply device. A value obtained by dividing the rated current of the power supply device from the current value flowing through the power supply device is called a load factor. Generally, a load factor of around 50% is the most efficient and can be said to be the optimum operating point of a power supply device that supplies power to the ICT device. Conversely, when the load factor is away from around 50%, the efficiency of the power supply device is lowered. The efficiency of a power supply device including a rectifier and UPS (Uninterruptible Power Supply) varies depending on the power consumed by the load of the ICT device, and there is an optimum operating point with the highest efficiency. Therefore, DC power supply in consideration of the optimum operating point of the power supply device is required.

  FIG. 1 shows the relationship between the load factor of the power supply device and the efficiency of the power supply device. In FIG. 1, the efficiency increases as the load factor approaches the load factor at which the optimum operating point (A) is reached, and the efficiency decreases as the load factor becomes far from the load factor as the optimum operating point. I understand that.

  Therefore, the fluctuation of the power consumption of the load of the ICT device also changes the load factor of the power supply device to reduce the efficiency of the power supply device. In addition, the control circuit of the power supply device is adjusted according to the fluctuation of the power consumption of the load of the ICT device. Driving loss occurs when the system is operated.

  For example, Patent Document 1 and Patent Document 2 describe techniques for preventing a reduction in efficiency of the power supply unit of the ICT apparatus and suppressing drive loss of the power supply unit of the ICT apparatus. Patent Document 1 discloses a technique for comparing the individual rated currents of the power supply unit and the total current output from the power supply unit, and controlling the number of operating power supply units based on the comparison result. . In Patent Document 2, the rectifier is composed of a plurality of power supply units that supply power to the ICT device. The efficiency of each power supply unit is calculated from the output current value of each power supply unit, and the efficiency of the rectifier is optimized. Thus, a technique for determining the number of operating power supply unit units is disclosed.

FIG. 2 is a block diagram showing the configuration of a conventional power supply system. A conventional power supply system 1 includes a power supply unit 2 _i (i = 1 to n: n) including a rectifier circuit that converts input AC power into DC power and a UPS that is installed so as not to interrupt power supply in the event of a power failure. Is any positive integer). In addition, the conventional power supply system 1 includes a power supply control device 3 for starting / stopping control of the power supply device unit 2 _i and a load power supply unit 4 _j for supplying power to the ICT device (j = 1 to m: m is any positive value) Integer). The power supply unit 2 _i includes a power supply unit 2 ₁ , a power supply unit 2 ₂ ,..., A power supply unit 2 _n . The load power supply unit 4 _j includes a load power supply unit 4 ₁ , a load power supply unit 4 ₂ ,..., A load power supply unit 4 _m .

In the system shown in FIG. 2, when the power consumption of a load of several ICT devices is suppressed to about several percent to several tens of percent, each power supply unit 2 _i is appropriately stopped according to the power consumption of the load. It becomes. Therefore, inefficiency is prevented by using many power supply unit 2 _i at light load. Further, by not operating the useless power supply unit 2 _i , an attempt is made to reduce the drive loss caused by the operation of the power supply unit 2 _i .

JP 2009-195079 A JP 2008-201090 A

  On the other hand, even when the ICT device is in the sleep mode, standby power is always generated. This is because, in order to start the ICT device again, it is necessary to supply power to the network board and to supply power to the motherboard for controlling the load power supply unit of the ICT device. In the prior art described in Patent Document 1 and Patent Document 2, it is difficult to stop the load power supply unit of the ICT device and supply standby power, and standby power is generated by the power input from the power supply unit of the DC power supply system. Had been supplied.

  For example, if the power supply system that supplies power to the load power supply unit of the ICT device is a large-scale power supply system of 100 kW class and is composed of 5 to 10 power supply units, each power supply unit The rated output is also in the 10kW to 20kW class. Therefore, there is a large difference in power controlled by starting or stopping one power supply unit.

  Therefore, for example, even if the load of several servers is insufficient for the power supply capacity of about several hundred watts required to operate in the sleep mode, the power supply unit of 10-20 kW class is operated if the power supply capacity is insufficient. It is necessary to let When the power supply unit is operated, there is a problem that the operating point of each load power supply unit is changed due to a change in the load of the ICT device and efficiency is lowered. Further, there is a problem that a drive loss of the control circuit of the load power supply unit that drives only for the load in the sleep mode occurs.

  FIG. 3 shows the relationship between the number of operating power supply units and the load power supply units of the ICT apparatus and the power capacity. In the graph shown in FIG. 3, the lower horizontal axis is the number of operating load power supply units, the upper horizontal axis is the number of operating power supply unit units, and the vertical axis is the power capacity (kW). . The solid line in the graph shown in FIG. 3 indicates the total power capacity (B) for each unit in which the power supply unit operates, and the broken line in the graph in FIG. 3 indicates the power capacity for each unit in which the load power supply unit operates. (C) is shown.

  For example, if five load power supply units of an ICT device with a rated output of 1 kW / unit operate, one power supply unit with a rated output of 5 kW / unit has no margin for the power capacity of the load power supply unit of the ICT device. One more unit will be activated. However, even if the ICT device enters the sleep mode and becomes lightly loaded, power must be continuously supplied from the load power supply unit of the ICT device. Therefore, even when the ICT device is lightly loaded, there is a problem that drive loss of the control circuit of the load power supply unit of the ICT device occurs.

  The present invention has been made in view of such problems, and an object thereof is to provide a power supply control system that realizes high efficiency of a load power supply unit of an ICT device even at a light load. There is.

  In order to solve the above problems, in the present invention, power is supplied to the load of the ICT device in the sleep mode by a storage battery connected to the internal power supply bus of the ICT device and connected to the load power supply unit of the ICT device. Switch off completely.

  In order to achieve such an object, the present invention provides a power supply control system for controlling a power supply and a storage battery for supplying power to a load of an ICT device, and within a predetermined time. When there is no access to the ICT device, the ICT device is put into a sleep mode, an execution unit that generates a first signal, and power is supplied from the storage battery to the load based on the first signal. And a second control unit for generating a signal for stopping the operation of the power source based on the second signal. And

  As described above, according to the present invention, the standby power of the load of the ICT device is supplied only by the storage battery, so that the load power supply unit can be operated with high efficiency. Further, according to the present invention, it is possible to reduce the drive loss of the load power supply unit of the ICT device based on the standby power during the sleep mode of the load power supply unit of the ICT device.

It is a figure which shows the relationship between the load factor of a power supply device, and the efficiency of a power supply device. It is a block diagram showing the structure of the conventional power supply system. It is a figure which shows the relationship between the operating number of load power supply units of a power supply device unit and an ICT apparatus, and power capacity. It is a block diagram showing the structure of the power supply system using the power supply control system concerning the 1st Embodiment of this invention. It is a flowchart which shows the power supply control method concerning the 1st Embodiment of this invention. It is a block diagram showing the structure of the power supply system using the power supply control system concerning the 2nd Embodiment of this invention. It is a flowchart which shows the power supply control method concerning the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
FIG. 4 is a block diagram showing the configuration of the power supply control system according to the first embodiment of the present invention. The ICT device 6 receives a load power supply unit 61 to which DC power from the external power supply 1000 is input, an internal power supply bus 62 for supplying the power output from the load power supply unit 61 to the load, and an external signal. Network board 63.

  The power supply control system 7 according to the first embodiment of the present invention includes an outlet 71 that supplies DC power to the ICT device 6, and a mother board (execution unit) 64 for controlling the load power supply unit 61 of the ICT device 6. Is provided. The network board 63 and the mother board 64 of the ICT device 6 are loads of the ICT device 6.

  The power supply control system 7 according to the first embodiment of the present invention includes a storage battery 72 and charge / discharge control that supplies power from the storage battery 72 to the network board 63 and the motherboard 64 of the ICT device based on a predetermined signal. And a device (first control unit) 73. Furthermore, the power supply control system 7 according to the first embodiment of the present invention includes a load state control device (second state) that turns on and off the outlet 71 that supplies power to the ICT device 6 when the ICT device 6 enters the sleep mode. Control unit) 74.

The outlet 71 includes a first switch SW ₁ and a second switch SW ₂ that turn ON / OFF the power supplied to the load power supply unit 61. The outlet 71 includes an ON / OFF control device 711 that controls ON / OFF of the first switch SW ₁ and the second switch SW ₂ based on a signal from the load state control device 74. In FIG. 4, the ICT device 6 is connected to the second switch SW2. The ON / OFF control device 711 monitors the current supplied to the ICT device 6.

  The mother board 64 monitors the access to the ICT device 6 and, if there is no access to the ICT device 6 within a predetermined time, causes the ICT device 6 to enter the sleep mode. When the ICT device 6 enters the sleep mode, the motherboard 64 generates sleep mode entry information (first signal) and transmits it to the charge / discharge control device 73.

  The charge / discharge control device 73 includes an internal switch and a control circuit, and is connected to an internal power supply bus 62 between the load power supply unit 61 and the load. The control circuit receives sleep mode entry information from the mother board 64, confirms the remaining amount of the storage battery 72, and turns on the internal switch. The internal switch is configured to supply power stored in the storage battery 72 in advance to the load of the ICT device 6 when turned on. Further, the charge / discharge control device 73 transmits the storage battery power supply determination information (second signal) and the sleep mode entry information of the ICT device 6 to the load state control device 74.

Load state control unit 74 based on the battery power supply determination information and the sleep mode inrush information from the charge-discharge controller 73, generates a signal for OFF control of the second switch SW _2.

FIG. 4 shows a block diagram when the ICT device 6 enters the sleep mode. The charge / discharge control device 73 receives the sleep mode entry information from the mother board 64 and turns on the internal switch so that the power of the storage battery 72 is supplied to the load of the ICT device 6. The charge / discharge control device 73 transmits the storage battery power supply determination information to the load state control device 74. When receiving the storage battery power supply determination information, the load state control device 74 transmits an OFF control signal for turning off the second switch SW ₂ to the ON / OFF control device 711. ON · OFF controller 711 receives the OFF control signal, the second switch SW ₂ to OFF.

  FIG. 5 shows a flowchart of the power supply control method according to the first embodiment of the present invention. The motherboard 64 monitors the access to the ICT device 6 and, if there is no access to the ICT device 6 within a predetermined time, causes the ICT device 6 to enter the sleep mode (S101).

  When the ICT device 6 enters the sleep mode, the motherboard 64 transmits the sleep mode entry information of the ICT device 6 to the charge / discharge control device 73 (S102).

  The charge / discharge control device 73 receives the sleep mode entry information of the ICT device 6 from the mother board 64. When the charge / discharge control device 73 receives the sleep mode entry information, the charge / discharge control device 73 checks the remaining amount of the storage battery 72. In addition, the charge / discharge control device 73 confirms the remaining amount of the storage battery 72 and, if there is a certain remaining amount, determines to supply the power stored in the storage battery 72 to the load of the ICT device 6, and The internal switch from 72 to the internal power supply bus 62 is turned on (S103).

  When the charge / discharge control device 73 determines to supply power from the storage battery 72 to the load of the ICT device 6, the storage battery power supply determination including information that determines to supply power from the storage battery 72 to the load of the ICT device 6. Information is transmitted to the load state control device 74 (S104).

Load state control unit 74 based on the battery power supply determination information, for stopping the operation of the load power supply unit 61, and generates an OFF control signal for turning OFF the second switch SW ₂ of the outlet 71 (S105).

  The load state control device 74 transmits the generated OFF control signal to the ON / OFF control device 711 (S106).

ON · OFF controller 711 receives the OFF control signal, and detects the current to the load power supply unit 61, if the detected current was confirmed to have fallen below a threshold value, and OFF the second switch SW ₂ The operation of the load power supply unit 61 is stopped (S107). When the operation of the load power supply unit 61 stops, the power supply from the load power supply unit 61 to the ICT device 6 is cut off.

  From step S101 to step S107, power supply to the load power supply unit 61 is cut off, and standby power is supplied from the storage battery 72 even when the ICT device 6 enters the sleep mode. Therefore, the load power supply unit 61 supplies standby power. You don't have to.

  With reference to FIG. 3, power control in the case where two power supply units (5 kW / unit) necessary for operating five load power supply units (1 kW / unit) of the ICT apparatus are operating will be described. For example, when one ICT device enters the sleep mode, in the conventional technique, it is necessary to operate one power supply unit only to cover a small amount of standby power of the ICT device. However, in this embodiment, the load power supply unit of the ICT device is stopped, and the standby power of the ICT device is covered by the storage battery instead. Therefore, the number of load power supply units of the operating ICT device is reduced from five to four, and the number of power supply units is reduced from two to one, so that it is possible to reduce the power for one power supply unit. .

  The remaining amount information of the storage battery 72 is periodically monitored in the charge / discharge control device 73, and when the remaining amount of the storage battery 72 falls below the threshold, the charge / discharge control device 73 turns on the second switch SW2. May be transmitted to the ON / OFF control device 711 via the load state control device 74.

  When the load state control device 74 monitors the access to the ICT device 6 and the ICT device 6 has not been accessed for a certain period of time, the load state control device 74 is connected to the network board of the ICT device 6 as shown in FIG. 63 may transmit a signal for the ICT device 6 to enter the sleep mode. Further, when the ICT device 6 enters the sleep mode 63, the load state control device 74 receives the sleep mode entry information from the motherboard 64 and transmits a signal for turning on the internal switch to the charge / discharge control device 73. Good.

  According to the present embodiment, since the standby power of the load of the ICT device is supplied only by the storage battery, the load power supply unit can be operated with high efficiency. Further, according to the present embodiment, it is possible to reduce the drive loss of the load power supply unit of the ICT device based on the standby power in the sleep mode of the load power supply unit of the ICT device.

In another embodiment, the motherboard 64 monitors access to the ICT device 6 and causes the ICT device 6 to enter a dormant state if there is no access to the ICT device 6 within a first given time. If the ICT device 6 is not accessed within the second given time, the ICT device 6 is shut down. When the ICT device 6 enters the hibernation state, the sleep state entry information is transmitted from the motherboard 64 to the charge / discharge control device 73, or when the ICT device 6 is shut down, the shutdown execution information is sent from the motherboard 64 to the charge / discharge control device 73. Send. The charge / discharge control device 73 receives hibernation state entry information or shutdown execution information from the motherboard 64 and turns on the internal switch so that the power of the storage battery 72 is supplied to the load of the ICT device 6. Hereinafter, similarly to the first embodiment, the charge / discharge control device 73 transmits the storage battery power supply determination information to the load state control device 74. When receiving the storage battery power supply determination information, the load state control device 74 transmits an OFF control signal for turning off the second switch SW ₂ to the ON / OFF control device 711. ON · OFF controller 711 receives the OFF control signal, the second switch SW ₂ to OFF.

  The case where the ICT device 6 enters the sleep mode has been described above. Next, power control when the sleep mode of the ICT device 6 is canceled will be described. The mother board 64 cancels the sleep mode of the ICT device 6 when the ICT device is in the sleep mode and the ICT device 6 is accessed. When the sleep mode of the ICT device 6 is canceled, the mother board 64 generates sleep mode cancellation information and transmits it to the load state control device 74.

When receiving the sleep mode release information, the load state control device 74 transmits an ON control signal for turning on the second switch SW ₂ to the ON / OFF control device 711. ON · OFF controller 711, based on the ON control signal to turn ON the second switch SW _2. The ON / OFF control device 711 transmits second switch ON information including information that the second switch SW ₂ is turned ON to the charge / discharge control device 73 via the load state control device 74. When the charge / discharge control device 73 receives the second switch ON information, the charge / discharge control device 73 turns off the internal switch to cut off the power supply from the storage battery 72. Therefore, when the sleep mode of the ICT device 6 is canceled, the supply of DC power from the power supply unit can be started again, and the power supply from the storage battery 72 can be cut off. Therefore, even if the entry and release of the sleep mode of the ICT device 6 is during the operation of the ICT device 6, the power supply to the load of the ICT device 6 is not stopped, and the efficiency of the load power supply unit of the ICT device 6 is improved. Can be achieved.

(Second Embodiment)
FIG. 6 is a block diagram showing the configuration of the power supply control system according to the second embodiment of the present invention. The power supply unit (DC power supply) 10 _i (i = 1 to n: n is an arbitrary positive integer) converts AC power input from the AC power supply 2000 into DC power, and converts the converted DC power to the ICT device 9. _j (j = 1 to m: m is an arbitrary positive integer). ICT device _{9 j} includes a load supply unit 91 _j which is DC power from the power supply unit 10 _i is input, a load 92 _j, for supplying power output from the load supply unit 91 _j to the load 92 _j and an internal power supply bus 93 _j. The load 92 _j includes a network board 922 _j that receives a signal from the outside.

Power control system 11 according to the second embodiment of the present invention, a supply outlet 111 DC power to ICT device _{9 j,} the motherboard 921 _j for controlling the load power supply unit 91 _j of the ICT device _{9 j} Is provided. Network board 922 _j and motherboard 921 _j of the ICT device _{9 j} is the load of the ICT device _{9 j.}

Moreover, the power supply control system 11 according to the second embodiment of the present invention supplies power from the storage battery 112 to the network board 922 _j and the motherboard 921 _j of the ICT device 9 _j based on the storage battery 112 and a predetermined signal. And a storage battery charge / discharge control device 113 to be supplied. Furthermore, the power supply control system 11 according to the second embodiment of the present invention sets the ICT device 9 _j to the sleep mode and the outlet 111 that supplies power to the ICT device 9 _j when the ICT device 9 _j enters the sleep mode. A load state control device 114 that turns ON / OFF is provided. In addition, the power supply control system 11 according to the second embodiment of the present invention includes a power supply control device (third control unit) 115 that controls the power supply unit 10 _i by a start / stop control signal.

The outlet 111 includes a jth switch SW _j that turns on / off the power supplied to the load power supply unit 91 _j . The outlet 111 includes an ON / OFF control device 1111 that controls ON / OFF of the j-th switch SW _j based on a signal from the load state control device 114. The ON / OFF control device 1111 monitors the current supplied to the ICT device 9 _j .

Motherboard 921 _j monitors the access to the ICT device _{9 j,} if there is no access to the ICT device _{9 j} within a predetermined time, thereby plunge the ICT device _{9 j} to the sleep mode. When the ICT device 9 _j enters the sleep mode, the motherboard 921 _j generates sleep mode entry information and transmits it to the charge / discharge control device 113.

The charge / discharge control device 113 includes an internal switch and a control circuit, and is connected to an internal power supply bus 93 _j between the load power supply unit 91 _j and the load 92 _j . The control circuit receives the sleep mode inrush information by the motherboard 921 _j, confirms the remaining amount of the battery 112 is ON the internal switch. When the internal switch is turned on, the internal switch is configured to supply the power stored in advance in the storage battery 112 to the load 92 _j of the ICT device 9 _j . Further, the charge / discharge control device 113 transmits the storage battery power supply determination information and the sleep mode entry information of the ICT device 6 to the load state control device 114.

The load state control device 114 generates a signal for controlling the _jth switch SW _j to be OFF based on the storage battery power supply determination information and the sleep mode entry information from the charge / discharge control device 113.

Further, the load state control device 114 transmits the load power capacity information to the power control device 115 based on the power capacity of the load 92 _j . The power control unit 115, the load power capacity information, and based on the output current from the power supply unit 10 _i, to ON · OFF control the power supply unit 10 _i.

Figure 6 shows a block diagram of a case where only the ICT device 9 ₁ has entered the sleep mode. Charge and discharge control device 113 receives the sleep mode inrush information from the motherboard 921 _1, the power of the battery 112 to the load 92 ₁ of ICT device _{9 1} to ON the internal switch to be supplied. The charge / discharge control device 113 transmits the storage battery power supply determination information to the load state control device 114. When receiving the storage battery power supply determination information, the load state control device 114 transmits an OFF control signal for turning off the first switch SW ₁ to the ON / OFF control device 1111. ON · OFF controller 1111 receives the OFF control signal to the first switch SW ₁ to OFF. In addition, the power supply control device 115 performs ON / OFF control of the power supply device unit 10 _i based on the power capacity of the load 92 _j .

Therefore, in the second embodiment shown in FIG. 6, the power in the sleep mode is obtained from the storage battery 112 connected to the internal power bus 93 _j of the ICT device 9 _{j in} conjunction with the operation number control of the power supply unit 10 _i. It has a structure to supply. By controlling the number of power supply units 10 _i with optimal efficiency in accordance with the demand of the load 92 _j and further controlling the OFF of the outlet 111, the load power supply unit 91 _j is also stopped. Therefore, while suppressing the power consumption of the load power supply unit 91 _j , it is possible to supply a small amount of necessary power from the storage battery 112 and operate the power supply unit 10 _i with high efficiency and stability.

FIG. 7 shows a flowchart of a power supply control method according to the second embodiment of the present invention. Motherboard 921 _j monitors the access to the ICT device _{9 j,} if there is no access to the ICT device _{9 j} within a predetermined time, thereby plunge the ICT device _{9 j} to the sleep mode (S201).

When the ICT device 9 _j enters the sleep mode, the motherboard 921 _j transmits the sleep mode entry information of the ICT device 9 _j to the charge / discharge control device 113 (S202).

The charge / discharge control device 113 receives the sleep mode entry information of the ICT device 9 _j from the motherboard 921 _j . When the charge / discharge control device 113 receives the sleep mode entry information, the charge / discharge control device 113 checks the remaining amount of the storage battery 112. Further, the charge / discharge control device 113 confirms the remaining amount of the storage battery 112 and, if there is a certain remaining amount, determines to supply the power stored in the storage battery 112 in advance to the load of the ICT device 9 _j , turning ON the internal switch to the internal power bus 93 _j from the storage battery 112 (S203).

Information charge and discharge control device 113, if it is determined that electric power is supplied from the storage battery 112 to the load 92 _j of the ICT device _{9 j,} which has decided to supply power from the storage battery 112 to the load 92 _j of the ICT device _{9 j} Is transmitted to the load state control device 114 (S204).

Based on the storage battery power supply determination information, the load state control device 114 generates an OFF control signal for turning off the jth switch SW _j of the outlet 111 in order to stop the operation of the load power supply unit 91 _j (S205).

  The load state control device 114 transmits the generated OFF control signal to the ON / OFF control device 1111 (S206).

The ON / OFF control device 1111 receives the OFF control signal, detects the current to the load power supply unit 91 _j, and turns off the j-th switch SW _j when confirming that the detected current is below the threshold. Then, the operation of the load power supply unit 91 _j is stopped (S207). When the operation of the load power supply unit 91 _j stops, the power supply from the load power supply unit 91 _j to the ICT device 9 _j is cut off.

The load state control device 114 transmits load power consumption information to the power supply control device 115 based on the power consumption of the load. The power supply control unit 115, the load power information, and based on the output current from the detected power supply unit 10 _i, determining the number of operating the power supply unit 10 _i, ON · the power supply unit 10 _i OFF control is performed (S208).

In step S208 from step S201, is cut off power supply to the load power supply unit 91 _j, since ICT device _{9 j} is the standby power is supplied from the battery 112 be entered into the sleep mode, the load power supply unit 91 _j is waiting There is no need to supply power.

In addition, it is possible to determine the number of power supply unit 10 _i to be turned ON / OFF based on the power consumption of the load 92 _j , and it is possible to increase the efficiency of the power supply unit.

  According to the present embodiment, since the standby power of the load of the ICT device is supplied only by the storage battery, the load power supply unit can be operated with high efficiency. Further, according to the present embodiment, it is possible to reduce the drive loss of the load power supply unit of the ICT device based on the standby power in the sleep mode of the load power supply unit of the ICT device. Furthermore, according to the present embodiment, by controlling the power supply unit ON / OFF, not only the efficiency of the load power supply unit of the ICT apparatus but also the efficiency of the power supply unit can be achieved.

1 power supply system 2 ₁ , 2 ₂ , 2 _n , 10 ₁ , 10 ₂ , 10 _n power supply unit 3, 115 power supply control device 4 ₁ , 4 ₂ , 4 _m , 91 ₁ , 91 ₂ , 91 _m , 61 load power supply Unit 6, 9 ₁ , 9 ₂ , 9 _m ICT device 7, 11 Power control system 62, 93 ₁ , 93 ₂ , 93 _m Internal power bus 63, 922 ₁ , 922 ₂ , 922 _m Network board 64, 921 ₁ , 921 ₂ , 921 _m Motherboard 71, 111 Outlet 72, 112 Storage battery 73 Charge / discharge control device 74, 114 Load state control device 92 ₁ , 92 ₂ , 92 _m Load 113 Storage battery charge / discharge control device 711, 1111 ON / OFF control device 1000 External power 2000 AC power source SW ₁ switch of the first switch SW ₂ second switch SW _m the m

Claims (2)

A power supply control system for controlling a power supply and a storage battery for supplying power to a load of an ICT device,
An execution unit that enters the ICT device into a sleep mode and generates a first signal when the ICT device is not accessed within a predetermined time; and
A first control unit that determines to supply power from the storage battery to the load based on the first signal, and generates a second signal;
And a second control unit that generates a signal for stopping the operation of the power source based on the second signal. A power supply control system for controlling a power source and a storage battery that supply power to a load of an ICT device, wherein the power source is connected to a DC power source that converts AC power into DC power and supplies the power to the power source,
An execution unit that enters the ICT device into a sleep mode and generates a first signal when the ICT device is not accessed within a predetermined time; and
A first control unit that determines to supply power from the storage battery to the load based on the first signal, and generates a second signal;
A second control unit for generating a signal for stopping the operation of the power source based on the second signal;
A power supply control system comprising: a third control unit that determines the number of DC power supplies to be operated based on the power consumption of the load.

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