JP2000184752A - Uninterruptible power supply with continuous commercial power supply - Google Patents

Abstract

(57) [Problem] To provide a small-sized and inexpensive uninterruptible power supply unit of a constant commercial power supply type without changing the structure or shape of a transformer, a storage battery, or an inverter. The power supply includes a transformer for transforming a commercial power supply voltage, a storage battery for storing power, and an inverter for converting the power of the storage battery to AC at the time of a power failure. In an uninterruptible power supply of a continuous commercial power supply system provided inside a casing 11, the storage battery 12 is arranged on a floor surface of the device casing 11, and a plurality of inverters constituting the inverter are provided above the storage battery 12. A substrate 26 on which the switching elements are mounted is disposed, and the transformer 7 is provided above the substrate.
Was arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterruptible power supply of a commercial power supply system, and more particularly, to an uninterruptible power supply in an apparatus casing.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an uninterruptible power supply of a constant commercial power supply system in which a transformer, a storage battery, and an inverter are provided.

[0002]

2. Description of the Related Art Conventionally, a continuous commercial power supply type uninterruptible power supply (UPS) having an output voltage adjusting function at the time of commercial power supply has been known.
It is also called a line interactive system. This type of uninterruptible power supply with continuous commercial power supply is
APCSmart-UPS catalog issued by C Japan or FULLBA issued by Sanken Electric Co., Ltd.
CK SIU SERIES Catalog (1998
There are many shapes such as those seen on the moon.

For example, an uninterruptible power supply of 1 kVA (670-700 W) class is always used as a power supply backup for a workstation server. A common use is to install an uninterruptible power supply in a country. In addition, there is another type of server called a rack mount, and a system of this rack mount type server is usually configured using a rack mount type uninterruptible power supply.

[0004]

However, when the outer dimensions of a vertical server are compared with, for example, a 1 kVA (670-700 W) class continuous commercial power supply type uninterruptible power supply,
Some small servers have a depth dimension of about 400 mm, and the uninterruptible power supply may have a depth dimension longer than that of the server. Even with the same uninterruptible power supply, it is relatively easy to reduce the size of the uninterruptible power supply using the always-inverter power supply system.
Although there are not a few products with a depth dimension of less than 400 mm, it is difficult to reduce the size of a less expensive continuous commercial power supply type uninterruptible power supply because a commercial transformer is used for the voltage adjustment circuit.

[0005] For this reason, when an uninterruptible power supply having a depth dimension longer than that of the server is used, the front of the panel of the uninterruptible power supply extends beyond the server, which hinders the operation of the server. In this case, even if the server and the uninterruptible power supply are installed with their panel surfaces aligned, a space in the front-rear direction is required as compared to the server alone, and a dead space occurs.

In addition, in the case of an uninterruptible power supply and a server of an always commercial power supply system, since the server generates more heat, the uninterruptible power supply installed next to the server does not block the flow of air to the server. Such a structure is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing, and it is an object of the present invention to provide a small and inexpensive continuous commercial power supply without changing the structure and shape of a transformer, a storage battery, or an inverter. It is an object of the present invention to provide an uninterruptible power supply of the type.

[0008]

That is, the present invention provides a transformer for transforming a commercial power supply voltage, a storage battery for storing electric power,
An inverter for converting the power of the storage battery to AC during a power outage, wherein the transformer, the storage battery, and the inverter are provided in an apparatus casing, and the uninterruptible power supply of a continuous commercial power supply system includes an inverter. Placed on the floor of the casing and above the storage battery,
A substrate on which a plurality of switching elements constituting the inverter are mounted and the transformer are arranged hierarchically to achieve an intended purpose.

Further, the present invention includes a transformer for transforming a commercial power supply voltage, a storage battery for storing power, and an inverter for converting the power of the storage battery to AC at the time of a power failure. In an uninterruptible power supply of a constant commercial power supply system provided inside a casing, the storage battery is arranged on a floor surface of a device casing, and a plurality of switching elements constituting the inverter are provided above the storage battery. A mounted substrate is arranged, and the transformer is arranged above the substrate.

A transformer for transforming a commercial power supply voltage;
An uninterruptible power supply of a continuous commercial power supply system, comprising: a storage battery for storing power; and an inverter for converting the power of the storage battery to alternating current at the time of a power failure, wherein the transformer, the storage battery, and the inverter are disposed inside a device casing. In the above, the inside of the device casing is vertically divided into three layers, the storage battery is mounted on a first layer which is the lowest layer, and the main circuit board of the inverter is mounted on a second layer, and further, The transformer is mounted on the third layer corresponding to the upper part of the main circuit board.

Further, in this case, on the wall surface on the operation surface side of the device casing and above the main circuit board of the inverter, and on the wall surface on the back side of the device casing and above the main circuit board of the inverter, An opening is provided, and a cooling fan for discharging air from the casing is provided in the opening on the back side of the casing.

Further, the transformer is arranged so that a longitudinal direction of an iron core thereof is directed in a front-rear direction of the casing, and a heat sink is provided in the switching element portion.
Further, the heat sink is arranged so that the groove of the heat sink extends in the front-rear direction of the casing. In addition, a board access slot through which a board can be inserted and removed from the outside of the casing is provided on a wall surface on the back side of the device casing and opposite to the main circuit board of the inverter, and the board access slot and the transformer are connected to each other. The magnetic shielding means is provided between them.

The present invention also provides a first transformer used at the time of a power outage, a second transformer used at the time of compensating for commercial voltage, a storage battery for storing power, and an AC power source for the storage battery at the time of a power failure. And an inverter for converting, the first and second
The transformer, the storage battery and the inverter, in a continuous commercial power supply type uninterruptible power supply provided inside the device casing, the storage battery is arranged on the floor of the device casing, and the storage battery A board on which a plurality of switching elements constituting the inverter are mounted is arranged, and the first and second transformers are arranged above the board so that the cores have the same longitudinal direction. It was done.

That is, in the uninterruptible power supply of the always commercial power supply system formed as described above, the storage battery is disposed on the floor of the device casing, and the inverter board and the transformer are arranged in a hierarchical manner on the storage battery. From being placed,
The transformer and inverter board, which are essential for the UPS, are lifted up from the floor and the floor area is reduced, that is, the bottom area of the UPS is limited to the battery and the circuit around the rear power plug. Therefore, it is possible to provide a small, uninterruptible power supply device of a constant commercial power supply system without changing the structure or shape of a transformer, a storage battery, or an inverter.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is a sectional view of the continuous commercial power supply type uninterruptible power supply. In the figure, 1 is a control board, 2 is a connector, 3 is an electrolytic capacitor, 4 is a heat sink, 5 is a switching element, 6 is a transformer base, 7
Is a transformer, 8 is an option slot, 9a and 9b are common mode chokes, 10 is a front panel, 11 is a housing (device casing), 12a to 12d are storage batteries, 13 is an output plug, 16 is a power cable, and 17 is fixed. A bracket, 18 is a cooling fan, 21b is a side opening, 25 is a drive circuit, and 26 is a main circuit board.

FIG. 2 is a top view of the uninterruptible power supply unit, as viewed from directly above. 2, the same components as those in FIG. 1 are given the same symbols. In addition, 14 is a filter capacitor, 15a, 15b, 15c, and 15d are relays, 20a and 20b are front openings, and 21a is a side opening.

Next, the structure will be described. First, a front panel 10 is arranged on the front of a housing 11. Inside the housing 11, storage batteries 12a, 12a
b, 12c and 12d are arranged side by side. Storage battery 12a
12d uses a capacity of 12V / 7Ah or a storage battery corresponding thereto. The storage batteries 12a to 12d are mounted from the front panel 10 side, and the rearmost portion is supported by the fixing bracket 17. An output plug 13 is arranged on the rear surface of the housing 11 behind the fixing bracket 17.

A power cable 16 is disposed outside the rear surface of the housing 11. Above the storage batteries 12a to 12d, a main circuit board 26 is arranged with a necessary and sufficient gap to avoid terminals and wiring of the storage batteries. Power cable 16
Is connected to the main circuit board 26 inside the housing 11, and
The output plug 13 is also connected to the main circuit board 26 inside the housing 11.

At the rear of the main circuit board 26, common mode chokes 9a and 9b are arranged.
The drive circuit 25 is disposed at the center of the front and rear direction of the drive circuit 6. This drive circuit is composed of discrete elements. On the main circuit board 26, a plurality of switching elements 5 are arranged in front of the drive circuit 25. Note that the drive circuit 25 is a circuit for driving the switching element 5. The heat sink 4 is connected to the switching element 5 for heat radiation.

On the main circuit board 26, a plurality of electrolytic capacitors 3 are arranged in front of the switching element 5, and further in front of the electrolytic capacitors 3, the connectors 2 are provided.
Is arranged. The control board 1 is connected to the connector 2 in a vertical direction and upward with respect to the main circuit board 26. A microcomputer and a control circuit for operating the uninterruptible power supply are mounted on the control board 1.

Drive circuit 2 at the center of main circuit board 26
Above 5, a transformer base 6 is arranged, and both sides thereof are connected and fixed to the housing 11. A transformer 7 is arranged on the transformer base 6. An option slot 8 is arranged on the rear surface of the housing 11 so as to be located above the common mode chokes 9a and 9b. Also, housing 1
1 is provided with a cooling fan 18 on the back thereof.
1, a side opening 21 b is provided near the control board 1.

Next, the configuration of the top view of FIG. 2 will be described. The connection relationship of the components is the same as in FIG. When viewed from the front side of the common mode choke 9a on the back side of the main circuit board 26, a relay 15c and a relay 15d are arranged on the left side, and further on the left side of the relays 15c and 15d,
Relay 15a and relay 15b are connected. The filter capacitor 14 is arranged behind the relay 15b.

Two wires are connected from the transformer 7 to the switching element 5 side, and relays 15a to 15d
Are connected to four wires. Meanwhile, the front panel 1
The front openings 20a and 20
b is arranged. Further, as shown in FIG. 1, a side opening 21b is provided on the front portion of the housing 11, on the right side when viewed from the front, and a side opening 21a is similarly provided on the left side. Further, the heat sinks 4 are arranged so that the grooves thereof face the front-back direction of the housing 11, and a plurality of the heat sinks 4 are arranged in a horizontal direction when viewed from the front of the housing 11.

Next, the operation of the thus configured device will be described. This uninterruptible power supply is connected to a commercial power supply via a power cable 16 and receives AC power. The power cable 16 is connected to the common mode choke 9b of the main circuit board 26.
And 9a, and these common mode chokes serve to absorb high frequency noise. After passing through the common mode chokes 9b and 9a, the AC power passes through the relays 15d, 15c, 15a, and 15b, and is then connected to the output plug 13.

The power cable of the server, which is a load of the UPS, is connected to the output plug 13 of the UPS to obtain AC power from the UPS. When the voltage of the commercial AC power source fluctuates, such as lowering or rising above the rating, the relay AC has a function of switching the relays 15c and 15a to adjust the output voltage.

On the other hand, the storage batteries 12a to 12d are connected to both poles of the electrolytic capacitor 3, and when an external commercial power supply is interrupted, the inverter constituted by the switching element 5 performs a PWM (pulse width modulation) operation. By
DC power output from the storage battery is converted into high-frequency AC. Further, the high-frequency AC is boosted by the transformer 7, and the leakage inductance component of the transformer 7 and the high-frequency component are removed by the filter capacitor 14, and the AC power is supplied from the output plug 13 to the load equipment as commercial AC power.

When a power failure occurs, the relay 15d is opened to prevent the AC power generated by the inverter from flowing to the input side. In addition, at the time of a power failure, the switching element 5 and the transformer 7 generate heat by the inverter operation, and are cooled by the cooling fan 18. At this time, the cooling fan 18 rotates in a direction of blowing out wind behind the uninterruptible power supply. By the rotation of the cooling fan 18, wind is blown to the front openings 20 a and 20 b opened in the front panel 10.
Flows from the side openings 21a and 21b of the housing 11,
The electrolytic capacitor 3, the heat sink 5, the transformer 7, and the filter capacitor 14 are cooled and discharged from the back of the housing 11. The heat sink 4 is arranged so that the front and rear direction of the housing 11, which is the direction of the wind, forms a groove so as not to obstruct the flow of the wind.

When this uninterruptible power supply is installed side by side with a vertical server, it is assumed that one of the side openings 21a and 21b will be closed by the server housing. Four openings are provided including the opening.

A board required for the uninterruptible power supply to communicate with an external device is inserted into the option slot 8. The board includes an RS-232C connector or a 10BASE-T connector. And so on.

The continuous commercial power supply type uninterruptible power supply shown in the figure is a 1 kVA / 1000 W output type device.
The load power factor is higher than that of the conventional 1 kVA / 670 W to 700 W type output, and the W number is increased. For this reason,
The storage batteries 12a to 12d have a capacity of 12V / 7Ah, and have a configuration in which 12a and 12b, 12c and 12d are respectively connected in series, and these are further connected in parallel. Therefore, the DC voltage is about 24V.

The external dimensions of the storage battery are 65 mm on the short side and 1 on the long side according to Japanese Industrial Standards (small sealed lead storage battery).
It is set to 51 mm and height to 94 mm. When the long sides of the storage batteries are arranged as shown in the drawing in the width direction of the housing 11, the total length of the four storage batteries 12a to 12d is four times the short side and is approximately 260 mm. As a result, the illustrated device can have a depth dimension of about 350 to 370 mm.

In the present embodiment, deterioration of the life of the storage battery due to overheating can be prevented by placing the heating element inside the uninterruptible power supply above the device. In addition, by setting the opening higher than the center of the housing and providing a wind circuit that flows from the front part to the rear part of the upper part of the housing, the uninterruptible power supply sucks in dust and dust that may cause failure or fire The danger is reduced. Further, by rotating the cooling fan 18 only at the time of power failure, the volume of the core of the transformer 7 can be made smaller than in the case of natural air cooling, and the volume and mass of the transformer 7 can be reduced.

In this embodiment, 1 kVA / 1000
Although the target is W, it is of course applicable to uninterruptible power supplies of other capacities. In that case, a similar configuration can be adopted by changing the housing dimensions according to the external dimensions of the storage battery.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a diagram showing the mounting arrangement of the continuous commercial power supply type uninterruptible power supply device similar to FIG. 1, and shows a state viewed from the left side of the device. 3, the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals. In addition, in FIG. 3, 12e and 12f are storage batteries, and 19 is a back opening.

First, the configuration of FIG. 3 will be described. A front panel 10 is arranged on a front surface of the housing 11. Case 1
Inside 1, storage batteries 12 e and 12 f are arranged side by side on the lower floor surface. Storage batteries 12e and 12f are 12V / 1
A storage battery of 2 Ah or a storage battery equivalent thereto is used. The storage batteries 12e and 12f are connected to the housing 11 from the front panel side.
And the rear end is supported by the fixing bracket 17. An output plug 13 is arranged on the rear surface of the housing 11 behind the fixing bracket 17.

A power cable 16 is provided on the outside of the back of the housing 11.
Is arranged. A main circuit board 26 is arranged above the storage batteries 12e and 12f with a sufficient space required to avoid terminals and wiring of the storage batteries. The power cable 16 is connected to the main circuit board 26 inside the housing 11. Also,
The output plug 13 is also connected to the main circuit board 26 inside the housing 11. Common mode chokes 9a and 9b are arranged at the rear of the main circuit board 26. The drive circuit 25 is disposed at the center of the main circuit board 26 in the front-rear direction. This drive circuit is composed of discrete elements.

On the main circuit board 26, the drive circuit 25
A plurality of switching elements 5 are arranged in front of the switching element 5. The drive circuit 25 is a circuit for driving the switching element 5. The heat sink 4 is connected to the switching element 5 for heat radiation. On the main circuit board 26, a plurality of electrolytic capacitors 3 are arranged ahead of the switching element 5. A connector 2 is disposed further in front of the electrolytic capacitor 3, and the control board 1 is connected to the connector 2 in a direction perpendicular to the main circuit board 26 and upward.

A microcomputer and a control circuit for operating the uninterruptible power supply are mounted on the control board 1.
The transformer base 6 is disposed above the drive circuit 25 at the center of the main circuit board 26, and both sides thereof are connected and fixed to the housing 11. A transformer 7 is arranged on the transformer base 6. An option slot 8 is arranged on the rear surface of the housing 11 so as to be located above the common mode chokes 9a and 9b. On the other hand, forward of the housing 11,
A side opening 21b is arranged near the control board 1. A rear opening 19 is provided on the rear surface of the housing 11.

Next, the operation of FIG. 3 will be described. The operation of this uninterruptible power supply is almost the same as that of the first embodiment of the present invention shown in FIGS. 1 and 2, and different points will be described below. This uninterruptible power supply is shown in FIGS.
Unlike this, the cooling fan 18 is not provided and a natural air cooling system is employed. The openings are, in addition to the side opening 21b, the side opening 21a and the front opening 20 as shown in FIG.
a and 20b. In addition, a rear opening 19 is provided on the rear surface of the housing 11, and the heat transmitted from the switching element 5 to the heat sink 4 and the heat generated from the transformer 7 are exhausted from these openings. The rear opening 19 has the same shape as the opening of the housing 11 when the cooling fan 18 is arranged in FIG.

Since the illustrated uninterruptible power supply with continuous commercial power supply is a device of about 0.7 kVA / 700 W output type, the switching element 5 and the transformer 7 on the main circuit board 26 are 1 kVA / 1000 W specification. If the same parts as those shown in FIGS. 1 and 2 are used, the rated capacity becomes 70% in FIG. 3, so that the loss generated in each part is reduced, and as a result, a cooling fan becomes unnecessary.

The storage batteries 12e and 12f are 12V / 1
2 Ah capacity, connected in series, DC voltage is about 24 V
It is. The external dimensions of the storage battery are 98 mm on the short side and 152 m on the long side according to Japanese Industrial Standards (small sealed lead storage battery).
m and a height of 94 mm. When the long side of the storage battery is arranged as shown in the drawing with the long side facing the width direction of the housing 11, the total length of the storage battery 12e and the storage battery 12f is about 196 mm, which is twice the short side.

As a result, the storage batteries 12a to 12a-1 shown in FIG.
The difference from 2d is that the long sides are almost the same, the heights are the same, and the short sides are different. Therefore, the uninterruptible power supply shown in FIG. 3 can use the same housing as the housing 11 shown in FIGS. 1 and 2, and the mounting bracket 17 is relocated when the storage batteries 12e and 12f are fixed. You only have to do it. The depth of the uninterruptible power supply is the same as that of FIG.
It can be about 70 mm.

FIG. 4 is a top view of an uninterruptible power supply according to a third embodiment of the present invention. 4, the same components as those in FIGS. 1, 2 and 3 are denoted by the same reference numerals. In addition, in FIG. 4, 23 is an auxiliary transformer stand, and 24 is an auxiliary transformer.

Next, the configuration of the top view of FIG. 4 will be described. The connection relationship of the components in FIG. 4 is almost the same as that in FIG. 2, and different points will be described. In FIG. 4, an auxiliary transformer base 23 is arranged between the transformer 7 and the cooling fan 18, and an auxiliary transformer 24 is arranged on the auxiliary transformer base 23.
Further, a magnetic shielding means 22 is arranged between the transformer 7, the auxiliary transformer 24 and the option slot 8. Two of the wires of the auxiliary transformer 24 are connected to the switching element 5 side, and the other wires of the auxiliary transformer 24 are connected to the main circuit board 26 between the auxiliary transformer base 23 and the common mode chokes 9a and 9b.
Connected to.

Next, the operation of FIG. 4 will be described. The auxiliary transformer 24 is connected to the switching element 5 and is used together with the transformer 7 to adjust the commercial power supply voltage. The voltage adjusting circuit using the auxiliary transformer 24 is characterized in that the voltage can be adjusted with higher accuracy than the method using only the transformer 7 described in FIGS.

For this reason, in the present embodiment, there occurs a commercial voltage compensation mode in which the auxiliary transformer 24 and some of the switching elements 5 are always operating. In this mode, the cooling fan 18 is operated to cool the switching element 5 and the auxiliary transformer 24. The flow of the wind at this time is, as in FIG. 2, the front openings 20a and 20b and
a, 21b, sequentially cools the electrolytic capacitor 3, the heat sink 5, the transformer 7, and the auxiliary transformer 24, and is discharged from the back of the apparatus by the cooling fan 18.

At this time, the magnetic shielding means 22 is arranged between the transformer 7, the auxiliary transformer 24 and the option slot 8. A board required for the uninterruptible power supply to communicate with an external device is inserted into the option slot 8, and these are a communication board having an RS-232C connector,
For example, a communication board having a 10BASE-T connector.
Since control components such as a microcomputer required for controlling the uninterruptible power supply are mounted on the control board 1, they are located relatively far from the transformer 7 or the auxiliary transformer 24, and the risk of malfunction due to leakage flux is small. , The option slot 8 is arranged near the transformer 7 and the auxiliary transformer 24 to insert the communication board from the back.

For this reason, the magnetic shielding means 22 is provided to prevent the magnetic flux leaked from the transformer 7 and the auxiliary transformer 24 from interlinking with the communication board inside the option slot 8 to prevent the board from malfunctioning. Further, the magnetic shielding means 22 also has a role of regulating the flow of the wind inside the housing 11 and enhancing a cooling effect particularly on the transformer 7 and the auxiliary transformer 24 which need to be cooled.

As described above, in the thus-formed uninterruptible power supply of the always-on commercial power supply system, for example, the depth of the 1 kVA / 1000 W class uninterruptible power supply of the uninterruptible power supply is reduced by the conventional 435 From about 453 mm to about 350 to 370 mm. As a result, when the uninterruptible power supply is installed side by side with the server, a space is created at the rear of the uninterruptible power supply and the flow of air to the server is not hindered.

Further, the space at the rear of the uninterruptible power supply can be effectively used for bundling and wiring the power cable, the communication cable and the like. In addition, by disposing a heating element such as a switching element or a transformer inside the uninterruptible power supply above the device, it is possible to prevent deterioration of the life of the storage battery due to overheating. In addition, an opening is provided above the center of the front of the housing and the front of the side to allow wind to flow from the front to the rear of the housing, so that dust and dust that cause failures and fires can be uninterrupted. The danger of the power supply inhaling is reduced.

By providing openings on the front and side surfaces, even when one of the front or side openings is closed by a server or other equipment, the flow of air into the uninterruptible power supply can be improved. Is not disturbed. In addition, 1 kVA / 100
By sharing the housing and components used for the 0 W machine and the 0.7 kVA / 700 W machine, the manufacturing cost can be reduced, and an inexpensive uninterruptible power supply can be provided. Further, by providing the magnetic shielding means between the transformer or the auxiliary transformer and the option slot, it is possible to prevent the communication board in the option slot from malfunctioning.

[0052]

As described above, according to the present invention, a compact and inexpensive uninterruptible power supply system of this kind which is small and inexpensive without changing the structure or shape of a transformer, a storage battery or an inverter. A power supply can be obtained.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view (diagram) showing an embodiment of an uninterruptible power supply system of the present invention.

FIG. 2 is a top view of FIG.

FIG. 3 is a vertical side view (diagram) showing another embodiment of the continuous commercial power supply type uninterruptible power supply of the present invention.

FIG. 4 is a top view of FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Control board, 2 ... Connector, 3 ... Electrolytic capacitor, 4
... heat sink, 5 ... switching element, 6 ... transformer stand, 7 ... transformer, 8 ... option slot, 9a, 9b
... common mode choke, 10 ... front panel, 11 ... housing (device casing), 12a to 12f ... storage battery, 13
... output plug, 14 ... filter capacitor, 15a-1
5d: relay, 16: power cable, 17: fixing bracket,
18: cooling fan, 19: rear opening, 20a, 20b
... front opening, 21a, 21b ... side opening, 22 ... magnetic shielding means, 23 ... auxiliary transformer stand, 24 ... auxiliary transformer,
25 is a drive circuit, 26 is a main circuit board.

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hideyasu Umezu 3-1-1, Sachimachi, Hitachi-shi, Ibaraki Pref. Hitachi Plant, Ltd. Hitachi Plant Co., Ltd. (72) Inventor Yasumasa Sasaoka 4-6-Canda Surugadai, Chiyoda-ku, Tokyo Address F-term in Hitachi, Ltd. (reference) 5G015 FA10 JA01 JA21 JA52 5H007 AA00 BB05 CC32 DA06 DB07 EA02 HA03 HA06

Claims (7)

[Claims] A transformer for transforming a commercial power supply voltage; a storage battery for storing power; and an inverter for converting the power of the storage battery to alternating current in the event of a power outage, wherein the transformer, the storage battery, and the inverter are arranged inside an apparatus casing. In the continuous power supply type uninterruptible power supply device, the storage battery is arranged on the floor of the device casing, and a plurality of switching elements constituting the inverter are mounted on the storage battery. An uninterruptible power supply system for continuous commercial power supply, wherein a board and the transformer are arranged in a hierarchical manner. 2. A power supply system comprising: a transformer for transforming a commercial power supply voltage; a storage battery for storing electric power; and an inverter for converting electric power of the storage battery to AC at the time of a power failure, wherein the transformer, the storage battery, and the inverter are provided inside an apparatus casing. In the continuous power supply type uninterruptible power supply device, the storage battery is arranged on the floor of the device casing, and a plurality of switching elements constituting the inverter are mounted on the storage battery. An uninterruptible power supply system with a continuous commercial power supply, wherein a board is arranged and the transformer is arranged above the board. 3. A transformer for transforming a commercial power supply voltage, a storage battery for storing electric power, and an inverter for converting the electric power of the storage battery to AC during a power failure, wherein the transformer, the storage battery, and the inverter are provided inside an apparatus casing. In the uninterruptible power supply device of the continuous commercial power supply system, the inside of the device casing is vertically divided into three layers, and the storage battery is mounted on the first layer, which is the lowest layer, and An uninterruptible power supply unit for continuous commercial power supply, wherein a main circuit board of the inverter is mounted on a layer, and a transformer is mounted on a third layer above the main circuit board. 4. An opening on a wall surface on the operation surface side of the device casing and above the main circuit board of the inverter, and on a wall surface on the back side of the device casing and above the main circuit board of the inverter, respectively. And a cooling fan for exhausting air in the casing is provided in an opening on the back side of the casing.
4. The uninterruptible power supply unit of the continuous commercial power supply system according to 2 or 3. 5. The transformer is disposed so that a longitudinal direction of an iron core thereof is oriented in a front-rear direction of the casing, a heat sink is provided in the switching element portion, and a groove of the heat sink is arranged in a front-rear direction of the casing. 5. The uninterruptible power supply unit for continuous power supply according to claim 4, wherein the uninterruptible power supply unit is arranged so as to extend. 6. A board entrance / exit slot through which a board can be inserted / removed from outside the casing and provided on a rear wall surface of the device casing and at a portion facing the main circuit board of the inverter. 6. An uninterruptible power supply system for continuous commercial power supply according to claim 1, wherein a magnetic shielding means is provided between the power supply and the unit. 7. A first transformer used at the time of a power failure, a second transformer used at the time of compensating for a commercial voltage, a storage battery for storing power, and an inverter for converting the power of the storage battery to AC at the time of power failure. Wherein the first and second transformers, a storage battery, and an inverter are provided in a continuous commercial power supply type uninterruptible power supply device that is disposed inside the device casing, wherein the storage battery is placed on a floor surface of the device casing. And a substrate on which a plurality of switching elements constituting the inverter are mounted, and the first and second transformers are disposed above the substrate in the longitudinal direction of the core. Are arranged side by side so that they are in the same direction.