JP2003264939A - Power unit and information processing system using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enlarge mounting space within a rack cabinet by the reduction of uninterruptive power units, and make a power unit have reliability equal to the uninterruptive power unit. <P>SOLUTION: In this power unit, a plurality of modules, each of which has an AC/DC converter for converting AC input into DC power, a DC output battery, and a switch for selecting and outputting either the output of the above AC/DC converter or the output of the battery, are mounted. The DC output from the above power unit is supplied directly into a system device. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC power supply device having a built-in power failure backup function in an information processing system.

[0002]

2. Description of the Related Art Conventionally, when supplying power to a PC or a server, electric power obtained from a commercial AC power supply has been supplied. Then, this is the AC / DC provided inside the PC or server.
It was converted by the converter and the electronic circuit was driven. Therefore,
An AC / DC converter is usually provided in each system unit to which power is supplied. In such an environment, it is considered to incorporate a battery as a backup at the time of power failure in order to improve the reliability of the device.

From the above, when the uninterruptible power supply is mounted on the rack mount type information processing system, the form usually shown in FIG. In FIG. 4, 1 is a rack cabinet in which a plurality of system devices are mounted, and 10 is an n-th (n is a natural number) system device in the rack cabinet. An AC / DC power supply 21 is provided in the system device 10, and the AC input power 9 is converted into DC power and output, and is supplied to packages 11 and the like.

Reference numeral 22 is a constant inverter type uninterruptible power supply device which is widely used in a rack mount type information processing system. In the uninterruptible power supply 22, 23 is an AC / DC converter that converts the AC input power 8 into DC power, and 25 is a DC / AC that selects either the DC output of the AC / DC converter 23 or the DC output of the battery 24. A switch for inputting to the inverter 26, and 28 for DC /
It is a switch that selects one of the AC output of the AC inverter 26 and the AC input power 8 supplied via the bypass circuit 27 and outputs the AC input power 9 supplied to each system device. A control circuit 7 controls the changeover switches 25 and 28. As a result, it is always supplied to the AC / DC power supply 21 through the AC / DC converter 23 and further through the DC / AC inverter 26. At the time of a power failure, the DC output of the battery 24 is converted into AC power by the DC / AC inverter 26 and given to the AC / DC power supply 21. In this way, power can be supplied to the system unit 10 even during a power failure. When the uninterruptible power supply device 22 does not function normally due to a failure or the like, the AC / DC power supply 21 is supplied with the AC power that has switched to the bypass operation and passed through the bypass circuit 27.

In a rack mount system equipped with such an uninterruptible power supply device 22, the uninterruptible power supply device has a large mounting space, and the power supply power is AC power → DC power → AC power → DC power, which is complicated. Furthermore, even if there is an abnormality in the power supply device, it is not possible to perform degenerate operation of the system device or substitute for the power supply device. In addition, the physical quantity of the power supply device is the same regardless of the quantity of the installed system devices.
Examples of the system device 10 include a server, a file device, and a network device that provide a service via a network.

[0006]

As described above, the uninterruptible power supply 22 and the system unit 10 are provided with AC / AC, respectively.
DC converter is installed and DC is installed in the uninterruptible power supply 22.
Since the / AC inverter is mounted, the device becomes large and the number of system devices 10 that can be mounted in the rack cabinet 1 is limited. Furthermore, even if a large number of system devices are installed and require a large power supply capacity, the same size power supply device is installed even when the installed system devices require only a small power supply capacity. An object of the present invention is to ensure the same level of reliability as a conventional system equipped with an uninterruptible power supply 22 while maintaining an AC / DC converter and a DC / AC converter.
It is to provide a rack mount type information processing system capable of mounting more system devices by reducing the mounting space of the inverter.

[0007]

An AC / DC converter for converting an AC input into a DC power supply, a DC output battery,
A power supply device is provided that includes a switch that selects and outputs either the output of the AC / DC converter or the output of the battery, and mounts a module having the output as DC. Then, the DC output output from the power supply device is directly supplied into the system device operating with DC power.

[0008]

1 is a diagram showing a power supply device according to a first embodiment of the present invention and an information processing system in which the power supply device is mounted. In FIG. 1, a DC power supply device (power supply module)
Reference numeral 31 is mounted in a rack cabinet (a form of housing) 100, and the AC input power supply 8 is converted into a DC power supply output 61 by the AC / DC conversion circuit 6. The changeover switch 4 is
DC power output 61 of AC / DC conversion circuit 6 and battery 5
One of the DC power supply outputs 51 is selected and output to the DC power supply output 41. The device control circuit 70 monitors the state of the AC input power supply 8, and connects the DC power supply output 51 of the battery 5 to the DC power supply output 41 by the output control signal 71 when the AC input power supply 8 has a power failure. When the input power supply 8 is normally supplied, control is performed to connect the DC power supply output 61 from the AC / DC converter circuit to the DC power supply output 41 of the changeover switch 4 by the output control signal 71. The DC power supply output 41 of the changeover switch 4 is connected to the system unit 101 in the rack cabinet 100 via the diode 31D.
It is connected to a DC power supply 90 that supplies the package 11 and the like inside. The system unit 101 receives power supply from the DC power supply 90 and executes processing. The DC power source 90 may be connected by a cable or a board. The DC power supply device 32 is a second DC power supply device having the same form as the DC power supply device 31. In addition, the DC power supply device 3M has the same configuration as the DC power supply device 31 and is the Mth (M-th).
Is a DC power supply device (power supply module) of an arbitrary natural number.

In the above case, when a power failure occurs in the AC input power supply 8, the control circuit 7 in the DC power supply device 31 detects the power failure, switches the DC output of the changeover switch 4 from 61 to 51, and the battery 5 Supply power. Further, the DC power supply devices 32 to 3M perform the same operation. Therefore, even if a power failure occurs, the system device 101 can continue normal operation.

As described above, in the embodiment shown in FIG. 1, a plurality of system units 101 which are operated by DC and are supplied with DC power are mounted in the same rack cabinet 100.
In addition, the same rack cabinet is equipped with AC / D
A plurality of power supply modules 3M incorporating a C converter, a battery, and a switching mechanism for these are mounted. Therefore, even if a power failure occurs, the system device can continue normal operation without the need for a large-scale device.

The plurality of power supply modules have the same structure and the same size. The plurality of power supply modules 3M have the same DC output capacity. Therefore, even if a failure occurs in one of the power supply modules, it can be restored by replacing it with a similar power supply module, and the maintainability is excellent.

Furthermore, since the number of power supply modules is n + 1 for n system units and the power supply modules have redundancy, the system unit is not stopped even if any one of the power supply modules fails. You can replace the power supply module and return to the original state. Therefore, it is highly available. (It is assumed that one power supply module satisfies the required power capacity of one system unit, but if one power supply module satisfies the required power capacity of a plurality of system units, redundancy can be achieved with a smaller number of power supply modules. FIG. 2 is a diagram showing a second embodiment of the present invention. Figure 2
In the figure, reference numeral 31 is a DC power supply device having the same function as the DC power supply device of FIG. 3M is an Mth DC power supply device equivalent to 31. The redundant mechanism 12 is the DC power supply 3
It is a substrate for relaying the power supplied from 1 to 3M to the system devices 1 to 1n. The redundancy mechanism 12 includes diodes 31D to 3MD, connectors 41B to 4MB for connecting to the DC power supply devices 31 to 3M, and system devices 1 to 1.
mounted with connectors 41C to 4NC for connecting with n,
The power supplied from the DC power supply devices 31 to 3M is supplied to the system devices 1 to n by the diodes 31D to 3MD and the connector 41.
B to 4MB, connected to a DC power supply 91 supplied via connectors 41C to 4NC. If M is set to n + 1, redundant operation becomes possible. That is, it is possible to prevent the operation of the system device from being affected even if there is a failure in some of the plurality of DC power supplies. The redundancy mechanism 12 is mounted in the rack mount kit 200 and connected to the DC power supply devices 31 to 3M.

In this way, the board is provided with connectors that can be connected to n system devices and connectors that can be connected to more than n DC power supply devices, so that a larger number of DC power supply devices can be mounted than the system devices. This allows the power supply to have redundancy.

Further, the number of system devices to be mounted differs depending on the user. When the power supply device is composed of a plurality of modules in this way, the power supply redundancy can be provided by a slight increase in the hardware amount (module) of the power supply device in accordance with the number of mounted system devices.

FIG. 3 is a diagram showing a third embodiment of the present invention. In FIG. 3, as a mounting method in the DC power supply device 3, a built-in battery 5, a DC power supply device control circuit 70, and an AC / DC converter circuit 6 built in the DC power supply device 3 are included.
Each unit is mounted from the front of the DC power supply, and the DC power supply connector 15, the AC input power supply connector 16, and the DC power supply control connector 17 are mounted on the rear surface of the DC power supply. Accordingly, regarding the removal of the DC power supply control circuit 70 and the AC / DC converter circuit 6, the operation panel 14 and the cooling F on the front surface of the DC power supply are removed.
The AN 13 is opened in the operation panel opening direction 20, and the DC power supply device control circuit 70 and the AC / DC converter circuit 6 are drawn out from the control circuit / AC / DC converter circuit drawing direction 18. For removal of the built-in battery 5, the operation panel 14 and the FAN 13 on the front of the DC power supply device are opened in the operation panel opening direction 20, and the built-in battery 5 is pulled out from the built-in battery pull-out direction 19. Without removing the whole 3 from the rack, the DC power supply control circuit and the AC / DC converter can be pulled out separately (in the unit of connector) from the built-in battery to replace the parts.

FIG. 5 is a diagram showing a fourth embodiment of the present invention. Here, unlike FIG. 1, the power supply device is AC / DC.
It is divided into a power unit with functions and a battery unit. With this configuration, it is possible to meet the user's needs such as how many system units are to be mounted, what is the required power capacity for them, and also to provide the power supply unit with redundancy and to mount many battery units. Can be implemented. Even if the size and mounting portion of the power supply unit and the size and mounting portion of the battery unit are different, it is possible to mount according to the needs of the user if a sufficient number can be mounted for each. Further, if the battery unit can be mounted in place of the power supply unit and the power supply unit can be mounted in place of the battery unit, the degree of freedom is further increased.

In FIG. 5, R1 is a 19-inch rack cabinet, S1 is a first system unit mounted in the rack cabinet, S2 is a second system unit mounted in the rack cabinet R1, and SN is an Nth system unit. Yes (N is an arbitrary natural number). S1, S2, ... SN
May be an arbitrary processing device such as a server, a file system, or a network device. In FIG. 5, PS1 is A
It is a first power supply unit that converts C input AC1 to DC output. In PS1, ACDC1 is AC input power A
An AC / DC converter that converts C1 into a DC output DC1 and outputs the DC output DC1 is connected to a DC input DC2 that is supplied to system devices S1, S2, ... SN via a diode D1. PS2 is a second power supply unit having the same form as PS1, and PSM is an Mth power supply unit having the same form as PS1 and PS2 (M is an arbitrary natural number). In FIG. 5, BU1 is a first DC output battery unit. In BU1, B1 is a DC output battery, and DC output BD1 of the battery B1 is a diode D
It is connected to the DC input DC2 supplied to the system devices S1, S2, ... SN via D1. BU2 is BU1
A second DC output battery unit of the same form as BU
L is an Lth DC output battery unit having the same form as BU1 and BU2 (L is an arbitrary natural number).

The SS1 communicates with the system units S1 to SN, the power supply units PS1 to M, and the battery units BU1 to L via a signal group SS3, and outputs the battery units BU1 to L according to the states of the power supply units PS1 to M. Is a control circuit for controlling. System devices S1, S2, ...
When the AC input AC1 to the SN is normally supplied, the control circuit SS1 operates from the power supply units PS1 to PS to AC.
The normal input state is recognized and the DC outputs of the battery units BU1 to M are invalidated. On the other hand, when the AC input transitions to the power failure state, the control circuit SS1 causes the power supply units PS1 to PS1 to operate.
Received a power failure notification from any of the power supply units of M,
DC output from the battery units BU1, BU2, ... BUM is enabled. Since the DC output is supplied to the DC2 via the diode in each battery unit, the system devices S1, S2, ... SN can continue to operate without stopping the processing. In the embodiment of FIG. 5, it is assumed that the number P of power supply units required according to the number of system devices S1 to SN and the power capacity of each system device can be arbitrarily selected within the range of power supply units PS1 to PS. ing. Regarding the battery units BU1 to BU, similarly, it is assumed that the actual mounting number Q of the battery units can be arbitrarily selected within the range of 1 to L according to the required power capacity.

Therefore, an arbitrary power supply unit and battery unit can be combined according to the power supply capacity required by the system, and high availability can be provided. Also in this case,
The remaining (MP) power supply units may be mounted as redundant power supplies, or may be unmounted when redundancy is unnecessary. Similarly, the remaining (LQ) battery units may be mounted as redundant batteries, or may be unmounted when redundancy is unnecessary. In this case, the control circuit SS1 includes any R units (R is 1 to (M-1)) of the power supply units PS1 to M.
When it detects that any of the natural numbers within the range of (1) has failed, it refers to the system configuration information stored in the configuration information storage unit SS2, and if the power supply capacity of the system cannot be satisfied with (MR) power supplies. Only when the determination is made, the outputs of the battery units BU1 to BU are validated, and the control for supplementing the power supply by the battery is enabled. Furthermore, in this case, among the battery units BU1 to BU, S units (1 to 1) are stored according to the system configuration information stored in the configuration information storage unit SS2.
When it is determined that the power capacity of the system can be sufficiently satisfied by (an arbitrary natural number within the range of (L-1)), the L-S unit may be able to invalidate the output as a backup battery unit. I can.

The information stored in the power supply configuration information storage section SS2 may be set by any of the system devices S1 to SN or may be set by hardware such as a switch, and the storage method is particularly limited. I don't. Also,
In the embodiment of FIG. 5, when the AC input AC1 is normally supplied, any battery unit of BU1, BU2, ... BUL is connected to the system devices S1, S2 ,.
.. The SN can be replaced without stopping the system unit, and high maintainability can be provided. In the embodiment of FIG. 5, the battery units BU1, BU2, ...
The BUL actually has an AC input and a charging circuit for charging, but it is omitted because it is not directly related to the present invention.

FIG. 6 (a) is a schematic diagram of the embodiment of FIG.
PS1, PS2, ... PSN power supply unit and B
U1, BU2, ... 19 BUM battery units
It is a figure which shows 5th Embodiment mounted horizontally in an inch rack cabinet. In FIG. 6, PS1 and PS2 are the same first and second power supply units and BU as in the embodiment of FIG.
1 and BU2 are first and second battery units similar to those of the embodiment of FIG. In FIG. 6, PL1 is PS1,
PS2, BU1 and BU2 are platter boards to which PS1 and PS of AC input power AC1 of the embodiment of FIG. 5 are connected.
2 and relay of power supply to DC outputs S1, S2, ... SN from PS1, PS2, BU1, BU2. In FIG. 6, CM1 has an AC input as a relay substrate PL1.
For supplying to the battery unit BU1 via the
The first connector CF1 is a connector on the relay board PL1 side. CM2 is a connector on the BU1 side for providing the DC output of the battery unit BU1 to the system device via the relay board PL1 at the time of power failure, and CF2 is the relay board P.
It is a connector on the L1 side. Furthermore, it has a connector CM3 on the BU1 side and a connector CF3 on the relay board side for relaying an interface signal specific to the battery module.
The interface specific to this battery module is
For example, a signal or A that notifies the system of the battery life.
An identification signal with the C-DC module can be considered. However, the present invention is not limited to these. Second battery unit BU2 and relay board P
A connector I / F similar to BU1 is provided between L1. On the other hand, between the first power supply unit PS1 and the relay board PL1, there is no connector on the PS1 side for relaying the interface signal specific to the battery module. The second power supply unit PS2 and the relay board PL1 also have the same connector interface as that between the first power supply unit PS1 and PL1. In the embodiment shown in FIG. 6, BU1 and BU2 can be mounted instead of PS1 and PS2, and similarly, B1 and BU2 can be mounted.
It is possible to mount PS1 and PS2 instead of U1 and BU2. In FIG. 6, SL1 and SL2 can be mounted in either a power supply unit or a battery unit.
At present, each shows an empty slot that is not mounted. P
L1 has CF1 and C at positions corresponding to SL1 and SL2.
It has connectors corresponding to F2 and CF3. Figure 6 (b)
In the drawing on the left side of the figure, the battery unit BU1 and the platter board PL1 are the connectors CM1 to CM3, C in the above embodiment.
It is the figure which looked at the form connected via F1-3 from the device horizontal direction. Similarly, in the diagram on the right side of FIG. 6B, the power supply unit PS1 and the platter board PL1 are the connectors CM4 to CM4.
FIG. 5 is a diagram of a configuration in which the connection is made via CF5 and CF1 to C2 as seen from the horizontal direction of the apparatus. In the diagram on the right side, CF3 used in the battery unit is unused. Figure 6
As shown in (b), either the power supply unit PS1 or the power supply unit BU1 can be mounted in the power supply slot in which the connectors CF1 to CF3 are mounted.
It is assumed that a total of 6 sets of similar power supply slots are provided in the embodiment of FIG. 6, but only one set is shown in FIG. 6 and the rest are omitted. According to the embodiment of FIG. 6, a battery module or a power supply module can be mounted in any of six slots in an arbitrary combination according to the system requirements, and a wide range of power supply systems can be provided.
That is, in the embodiment shown in FIG. 6, the system may be configured with a total of six power supply units and three battery units as a power failure countermeasure, or a total of six power supply units may be mounted in all power supply slots. A system that provides a large capacity may be provided, and a combination of four power supplies and two battery units is possible, and can be arbitrarily selected according to the user's request. Also, in the embodiment of FIG.
By providing the control circuit SS1 of the embodiment of FIG.
It is also possible to provide redundant power supply control and battery control at the time of power failure according to the system configuration shown in the embodiment of FIG. In the embodiment of FIG. 6, the power supply units PS1 and PS2 have, for example, the SSI specification (A Server System I) which is a general open standard in a server system.
nfrastructure Specfatio
It is possible to adopt a power supply unit conforming to n). In this case, the battery units PS1 and PS2 are also S
The present invention can be realized by setting dimensional specifications equivalent to the SI standard.

The above embodiment has the following effects. In a rack mount system, by using a DC power supply device with a built-in battery,
Reducing the converters in the DC power supply and the uninterruptible power supply, and according to the first embodiment, the built-in AC / DC power supply in the system unit and the DC / A in the uninterruptible power supply shown in FIG.
By eliminating the C converter circuit, the device can be downsized and the mounting space in the rack cabinet can be expanded efficiently. In addition, by making the DC power supply unit a single module and allowing each DC power supply unit to be directly mounted in the rack cabinet, parts can be replaced without removing the DC power supply unit when each power supply module fails, Further, reliability can be ensured by mounting a built-in battery in the DC power supply device and mounting a plurality of DC power supply devices in the rack cabinet for redundancy. In addition, the total number of DC power supply devices n (n is a natural number) can be arbitrarily determined according to the number of system devices and power supply capacity, and optimal device mounting can be realized according to the scale of the system.

According to the embodiment shown in FIG. 5, even if a power failure occurs, the battery units BU1, BU2, ... BUM can continue to supply power to the system units S1, S2 ,. The system can continue operating without doing so. Further, it is possible to replace any battery unit when the system is operating, and it is possible to provide high maintainability.

According to the embodiment shown in FIG. 6, a battery module or a power supply module can be mounted in any of six slots in an arbitrary combination according to the system requirements, and a wide range of power supply methods can be provided. In addition, SSI
By adopting a configuration that conforms to standards such as the above, it is possible to adopt an industry standard power supply unit, and it is possible to reduce development man-hours and cost.

Appendix (1) Means for converting AC power input to DC power output,
A power supply module configured to select and output any one of the battery having a DC output, the DC output of the AC / DC converter, and the DC output of the battery, and the power supply module whose output is DC is N type (N Is a natural number), and the N-type power supply modules have the same structure as each other. (2) means for converting AC power input to DC power output,
A power supply module configured to select and output any one of the battery having a DC output, the DC output of the AC / DC converter, and the DC output of the battery, and the power supply module whose output is DC is N type (N Is a natural number) and the N-type power supply modules have the same DC output capacity. (3) means for converting AC power input to DC power output,
A battery having a DC output, means for selecting and outputting any one of the DC output of the AC / DC converter and the DC output of the battery, and the power supply module whose output is DC is of N type (N Is a natural number) and is a power supply device installed in a rack mount cabinet,
A power supply device, wherein any power supply module in the power supply device can be individually inserted into and removed from the power supply device in a state where the power supply device is mounted in the rack mount cabinet. (4) A power supply device including a power supply module that converts an AC power supply input of M type (M is a natural number) into a DC power supply output and supplies it, and a module that supplies a DC output by an L type (L is a natural number) battery The M type power supply module has the same size and size, the L type battery module has the same size and size, and any power supply module and battery module in the power supply device are respectively inserted and removed from the power supply device. This is a possible configuration, and it is possible to implement P type (P is a natural number of M or less) of the M type power supply modules and Q type (Q is a natural number of L or less) of the L type battery modules. Normally, the output of the Q type battery module is invalid, and power is supplied to the information processing apparatus of the supply destination only by the P type power supply module. If an arbitrary R-type (R is an arbitrary natural number of M or less) power supply module of the P-type power supply modules in the power supply device stops the output, an S-type (S is L or less of the Q-type battery module A power supply device characterized by continuing power supply by enabling power supply from an arbitrary natural number). (5) The power supply device according to (4), characterized in that the power supply device has means for setting a natural number R and S arbitrarily by a user. (6) The power supply device according to any one of (4) and (5),
The M type power supply module and the L type battery module have the same size and size, and the battery module can be mounted at the mounting position of the power supply module and the power supply module can be mounted at the mounting position of the battery module. (7) A power supply device including an M-type (M is a natural number) AC power supply input converted into a DC power supply output and supplied, and a L-type (L is a natural number) battery-powered module for supplying DC output The M type power supply module has the same size and size, the L type battery module has the same size and size, and any power supply module and battery module in the power supply device are respectively inserted and removed from the power supply device. It is a possible configuration, and only P type (P is a natural number of M or less) of the M type power supply modules is mounted, and only Q type (Q is a natural number of L or less) of the L type battery modules is mounted. And any L-type (L is a natural number of N-1 or less) power supply module of the N-type power supply modules in the power supply device stops the output. Even if it does, if the power supply capable of continuing the processing of the system device to which the power is supplied by the N-L type power supply module is possible, the power supply switching from the M type battery module is not performed, and -A power supply device characterized in that power is supplied to the system device by an L-type power supply module.

[0026]

According to the present invention, it is possible to provide a power supply device that meets the needs of users.

[Brief description of drawings]

FIG. 1 is a diagram showing a power supply device and an electronic device in which the power supply device is mounted according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a mounting form of a power supply device and a system device according to an embodiment of the present invention.

FIG. 3 is a diagram showing an example of a mounting form of a DC power supply device in a rack cabinet according to an embodiment of the present invention.

FIG. 4 is a diagram showing an example of a conventional power supply device and an electronic device mounting the same.

FIG. 5 is a diagram showing another embodiment of a power supply device of the present invention and an electronic device including the same.

FIG. 6 is a diagram showing an example of a mounting form of a power supply device according to another embodiment of the present invention.

[Explanation of symbols]

100: Standard 19 inch rack cabinet, 4: Changeover switch, 5: Built-in battery, 6: AC / DC conversion circuit 70: device control circuit group, 8: AC input power supply, 90: DC power supply, 101: Rack mount type system device, 11: Built-in packages, 31: The first DC power supply device equipped with an internal battery, 32: Second DC power supply device equipped with built-in battery, 3N: Nth DC power supply device with built-in battery, 41: DC power output of changeover switch, 51: DC power output of built-in battery, 61: DC power output of AC / DC converter circuit, 71: output control signal, 31D: diode.

Continued front page    (72) Inventor Nobuhiro Tobita             810 Shimo-Imaizumi Stock Exchange, Ebina City, Kanagawa Prefecture             Hitachi Platform Platform             Home Office (72) Inventor Kazuyasu Akimoto             810 Shimo-Imaizumi Stock Exchange, Ebina City, Kanagawa Prefecture             Hitachi Platform Platform             Home Office (72) Inventor Junichi Funazu             456 Sakai, Nakai-cho, Ashigarakami-gun, Kanagawa Stock             Hitachi Information Technology Co., Ltd.             Within F-term (reference) 5B011 DA03 DB04 EA03                 5G015 FA10 GB03 HA15 JA05 JA06                       JA32 JA53 JA56                 5H730 AA11 AS01 AS19 AS21 BB84                       CC01 ZZ01 ZZ04 ZZ11

Claims (4)

[Claims] 1. A means for converting an AC power supply input into a DC power supply output, a battery having a DC output, a DC output of the AC / DC converter and a DC output of the battery are selected and output. Means, the output of which is D
A power supply device, wherein a power supply module C is mounted in an N type (N is a natural number). 2. The power supply according to claim 1, wherein the power supplied by the N type power supply module is larger than the power required by the system unit to which the power is supplied by at least one power supply module. apparatus. 3. An AC power source input of M type (M is a natural number) is DC
A power supply device comprising a power supply module for converting and supplying power output and a module for supplying DC output by an L-type (L is a natural number) battery, wherein the M-type power supply modules have the same size and size. Yes, L
Type battery modules have the same size and size, and any power supply module and battery module in the power supply device can be inserted into and removed from the power supply device. Among the M type power supply modules, P type (P is M A power supply device characterized in that it can be mounted and a Q type (Q is a natural number equal to or less than L) of the L type battery module can be mounted. 4. A means for converting an AC power input into a DC power output, a battery having a DC output, a DC output of the AC / DC converter, and a DC output of the battery are selected and output. Means, the output of which is D
An N-type (N is a natural number of 2 or more) power supply module which is C, and a system device to which DC power is supplied from the power supply module mounted in the same housing as the power supply module are provided. Information processing system.