JPH0711854U - Intelligent power supply unit - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an intelligent power supply unit capable of reducing the capacity of an uninterruptible power supply without causing any trouble in the operation of a computer system. [Structure] Switches SSR _{1 to} SS are provided in the electrical path connecting the uninterruptible power supply 12 and the loads ₁ to _n in the computer system.
Interpose R _n . While monitoring the power failure of the commercial power supply 11 and the remaining battery capacity of the uninterruptible power supply 12, depending on the remaining battery capacity and the duration of the power failure, the load side switch SSR having a low importance to the high load side switch SS
A monitoring control unit 13 that sequentially outputs an off control signal to R is provided. During a power failure of the commercial power supply 11, the power supply is stopped in order from a load of low importance according to the power failure time and the remaining battery capacity.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power supply device using an uninterruptible power supply (UPS) that backs up a plurality of loads, and more particularly, to an intelligent power supply unit that supplies power to a computer system including a plurality of components.

[0002]

[Prior art]

 The uninterruptible power supply currently used has a batch power capacity of □□ V, □ minutes, and is configured to display the backup time during a commercial power failure. Since the uninterruptible power supply guarantee for a computer system selects an uninterruptible power supply based on the relationship between the power supply capacity of the entire computer system and the backup time, generally, an uninterruptible power supply with a large capacity is used. ing. On the other hand, most commercial blackouts are momentary blackouts of tens of ms.

[0003]

[Problems to be solved by the device]

 As mentioned above, even if the commercial power outages are mostly instantaneous blackouts, if the functions of the entire computer system are guaranteed uniformly, the non-interruptible power supply must be of a large capacity according to its backup time. I have to. Also, even if the above-mentioned large capacity type uninterruptible power supply is used, the backup time will be long, but it will be limited.

The present invention has been made in view of the above points, and an object thereof is to provide an intelligent power supply unit capable of reducing the capacity of an uninterruptible power supply without causing any trouble in the operation of a computer system. It is in.

[0005]

[Means for Solving the Problems]

 The present invention includes an uninterruptible power supply that backs up power supply to a plurality of loads when a commercial power source fails, and data that represents the importance of the plurality of loads during a commercial power failure. A monitoring control unit that monitors the remaining battery capacity of the power failure power supply and outputs a control signal for sequentially stopping the backup from a less important load according to the remaining battery capacity and the power failure duration during backup, and the uninterruptible power supply. It is characterized in that it is provided with a switch which is inserted in each electric path connecting a power supply device and a plurality of loads and which is on / off controlled by an output signal of the supervisory control unit.

[0006]

[Action]

 During a power failure of the commercial power supply, electric power is supplied from the uninterruptible power supply (the battery thereof) to a plurality of loads in place of the commercial power supply. The supervisory control unit has data indicating the importance of multiple loads, and based on the power outage duration and the remaining battery capacity of the uninterruptible power supply, it sends a control signal to stop the backup in order of importance. Output. Then, the power supply to the switch-side load, which is off-controlled by the control signal, is stopped. Therefore, if the commercial power supply has a long power failure time or the uninterruptible power supply has a small remaining capacity, the uninterruptible power supply is sequentially disconnected from the less important loads.

As described above, since the uninterruptible power supply does not have to uniformly back up all of the plurality of loads, the capacity of the uninterruptible power supply can be reduced.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. First, in the present invention, the components (loads) in the computer system are functionally roughly classified into a man-machine section, a data storage section, etc., and their importance during a commercial power outage is positioned. Then, the power supply is stopped in order from the less important loads according to the power outage time.

FIG. 1 shows a block diagram of an embodiment, where 11 is a commercial power supply and 12 is an uninterruptible power supply. Load on Each path connecting the load ₁ to load _n of the uninterruptible power supply 12 and the computer system, switch SSR ₁ ～SSR _n constituting the off portion that has been inserted.

Reference numeral 13 denotes a monitor control unit, which is composed of a DI unit, a DO unit, and a CPU unit having data to which the importance of the load is assigned. The DI unit monitors the battery capacity of the uninterruptible power supply and the commercial power outage, and based on this information, the CPU unit determines the load to stop the power supply from the duration of the commercial power outage and the remaining battery capacity and transmits it to the DO unit. To do.

The switches SSR _{1 to} SSR _n are controlled by an on / off control signal from the DO unit, and turn on / off the output of the uninterruptible power supply 12.

The uninterruptible power supply 12, the monitoring controller 13, and the switches SSR _{1 to} SSR _n constitute an intelligent power supply unit X.

In the device configured as described above, when the commercial power supply 11 is out of power, power is supplied from the battery side of the uninterruptible power supply device 12 to the loads ₁ to _n . As shown in FIG. 2, the monitoring controller 13 outputs an off control signal for stopping the power supply in the order of low importance load ₁ , load ₂ ... Based on the power stop duration and the remaining battery capacity. . As a result, the switches SSR ₁ , SSR _2, ... Are turned off in this order, and the number of loads fed from the uninterruptible power supply device 12 is gradually reduced.

Further, when the power outage time of the commercial power supply 11 is short, such as a momentary interruption, no load is disconnected and the function of the computer system can be continued without any hindrance.

As described above, the uninterruptible power supply 12 does not need to uniformly back up the loads ₁ to _n , so that the capacity of the uninterruptible power supply can be reduced.

The present invention can be applied not only to the load of the computer system but also to other loads. It is also possible to divide the intelligent power supply unit X functionally and transfer the CPU section to the host CPU.

[0017]

[Effect of device]

 As described above, according to the present invention, an uninterruptible power supply that backs up power to a plurality of loads when a commercial power supply fails and a data indicating the importance of the plurality of loads during a commercial power failure are built-in. Monitoring the power outage of the commercial power supply and the battery remaining capacity of the uninterruptible power supply, and at the time of backup, output a control signal to stop the backup in order from the less important load according to the battery remaining capacity and the power failure duration. Since the control unit and the switch that is inserted in each electric path connecting the uninterruptible power supply and a plurality of loads and is on / off controlled by the output signal of the monitoring control unit, the following excellent features are provided. The effect is obtained.

(1) It is possible to reduce the capacity of the uninterruptible power supply used. (2) If the power outage time is short, such as a momentary power interruption, the function can be continued without any trouble in system operation. (3) When the power failure time is long, it is possible to extend the life of the lithium battery that backs up the NVRAM etc. for data storage.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is an explanatory view showing the relationship between the power failure time and the number of power supply loads according to the present invention.

[Explanation of symbols]

 11 ... Commercial power supply 12 ... Uninterruptible power supply 13 ... Monitoring control unit X ... Intelligent power supply unit

Claims (2)

[Scope of utility model registration request] 1. An uninterruptible power supply device for backing up power supply to a plurality of loads when a commercial power supply fails, and a built-in data indicating the importance of the plurality of loads during a commercial power failure. A monitoring control unit that monitors the remaining battery capacity of the uninterruptible power supply and outputs a control signal for sequentially stopping the backup from the less important loads in accordance with the remaining battery capacity and the power failure duration during backup. An intelligent power supply unit, comprising: a switch that is inserted into each electric path connecting a power failure power supply and a plurality of loads and that is turned on / off by an output signal of the monitoring control unit. 2. The intelligent power supply unit according to claim 1, wherein the plurality of loads are a plurality of loads in a computer system.