JP2000166119A - Uninterruptible power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily maintain and exchange a built-in battery and easily handle it by arranging an input/output circuit at the upper portion of a battery. SOLUTION: In an uninterruptible power supply device 100, an input/output circuit +2 with an AC input/output circuit for inputting/outputting AC and a DC input circuit for inputting DC inside, a battery 1 incorporating a built-in battery 11 that can be replaced inside, an LC filter 3 with a converter input side LC filter circuit and an inverter output side LC filter circuit inside, and a power conversion circuit 4 with a circuit for converting power such as a converter and an inverter, are successively arranged upward. Each of these parts is arranged in each partitioned space of a case 100a where the inside is divided into a plurality of spaces by a partition shelf in upper and lower directions. A front door 5 is provided in the front of the case 100a, and the inside of each part can be accessed by opening or closing the front door 5.

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 capable of supplying power when a commercial power supply fails.

[0002]

2. Description of the Related Art FIG. 6 is a schematic diagram showing the structure of a conventional uninterruptible power supply.
A battery unit 201 having a replaceable built-in battery 211 therein, an input / output circuit unit 202 internally provided with an AC input / output circuit for inputting / outputting AC and a DC input circuit for inputting DC, and a converter input side. L having an LC filter circuit and an inverter output side LC filter circuit therein
A C filter unit 203 and a power conversion circuit unit 204 having a converter, an inverter, and the like are sequentially arranged upward. Each of these components has a case 20 in which the inside is divided into a plurality of spaces by vertical shelves or the like in the vertical direction.
The front door 205 is provided on the front surface of the case 200a. The front door 205 can be opened and closed to access the inside of each section. The input / output circuit unit 202 has an input / output terminal block 202a which is a connection unit used for connection to an external power supply, equipment, or the like.
An external three-phase commercial power supply (not shown) is connected to the AC input terminal block of the input / output terminal block 202a by 2e, and an external load circuit (not shown) is connected by electric wires 202f to 202i. And the AC output terminal block of the input terminal block 202a. LC filter unit 203
In addition, cooling fans 231 and 241 are attached to the power conversion circuit unit 204, respectively. In addition, casters 200b are provided below the uninterruptible power supply 200.
Is installed, and if necessary, the uninterruptible power supply 200
Can be moved.

FIG. 7 is a perspective view schematically showing an internal structure of a main part of a conventional input / output circuit section 202. In the drawing, the same reference numerals as those in FIG. 6 denote the same or corresponding parts. Input-side EMI (Electro Magnetic Interfer) for removing propagation noise from inside the uninterruptible power supply 200
An input-side EMI filter substrate 202j provided with a filter circuit and an output-side EMI filter substrate 202k provided with an output-side EMI filter circuit are mounted on a mounting plate 220, and the input-side EMI filter substrate 202j is provided. The upper circuit is connected to the AC output terminal block of the input / output terminal block 202a mounted on the mounting plate 220 by electric wires 202l to 202o. The circuit on the output-side EMI filter board 202k is connected to the AC input terminal block of the input / output terminal block 202a by electric wires 202p to 202s.

FIG. 8 is a perspective view showing a structure of a converter input side LC filter capacitor circuit provided inside a conventional LC filter section 203. In FIG.
U-phase input side filter capacitors 232a, 232b,
V-phase input side filter capacitors 232e, 232f,
The W-phase input side filter capacitors 232i and 232j are mounted on the mounting plate 230 by screws using mounting members 235. The U-phase input side filter capacitors 232a and 232b are connected to the electric wires 232c and 232, respectively.
and d are connected in parallel. V-phase input side filter capacitors 232e and 232f are connected to electric wires 232g and 2
32h are connected in parallel. The W-phase input side filter capacitors 232i and 232j are connected in parallel by electric wires 232k and 232l. One terminal of the filter capacitor connected in parallel in each phase of U, V, and W is connected to electric wires 232m, 232n, and 232o, respectively.
Are connected to the input terminals of the terminal block 232p, respectively, and the other terminals are connected to the electric wires 232q, 232r, and 232, respectively.
The terminal block 232p is connected to the neutral point terminal via the terminal s.

[0005] A capacitor circuit (not shown) for the inverter output side LC filter is also provided inside the LC filter section 203. The capacitor circuit for the inverter output side LC filter also has the same structure as that of the filter filter except for the number of filter capacitors. It has almost the same structure.

FIGS. 9 (a) and 9 (b) are views showing a cooling fin unit which constitutes a part of the power conversion circuit section 4 shown in FIG. 6 and its periphery, and FIG. FIG. 9B is a plan view as viewed from above. In the figure, mounting plate 2
The cooling fin unit 242a is disposed on the cooling fan 241 in the direction of air flow of the cooling fan 241 so that air from the cooling fan 241 can pass through the fin unit 242a.
The fin base 242b is attached to the upper part. Here, the cooling fin unit 242 has a structure in which a plurality of metal plates are arranged in parallel along the air blowing direction with a predetermined gap.
Although a is used, a cooling fin having another structure may be used. On the fin base 242b, an IGBT (Insulated Ga) for a converter which is a switching element is provided.
te Bipolar Transistor) 242c, IG for inverter
BT 242d, IGBT 242e for step-up chopper for boosting the battery voltage to a DC voltage necessary for driving the inverter, IGBT 242f for DC voltage control of the inverter input, and AC of the uninterruptible power supply when the inverter is overloaded or fails. Thyristor 24 forming a bypass circuit for supplying power from an input circuit to a load circuit
2g to 242i are arranged.

FIGS. 10A and 10B show the LC filter section 203.
FIG. 10A is a diagram showing a reactor circuit constituting a part of the power conversion circuit unit and a structure near a cooling fin unit of the power conversion circuit unit 204. FIG. Area view, FIG.
(b) is a plan view seen from above the reactor circuit. In the figure, the same reference numerals as those in FIG. 9 indicate the same or corresponding parts, and the reactor circuit 233 is mounted on the mounting plate 23.
On the converter input side LC filter reactor 23
3a to 233c and inverter output filter reactors 232d to 232f. These are the cooling fan 2 mounted on the mounting plate 230.
31 are arranged in the blowing direction.

[0008]

In the conventional uninterruptible power supply, in order to facilitate maintenance and replacement of the electric parts and the battery after the apparatus is installed, it is also easy to connect the external commercial power supply to the load circuit. As shown in FIG. 6, only the front door 205 of the case is openable and closable so that internal components and the like can be accessed, that is, a so-called front access structure. However, since the built-in battery 211 that reduces the weight by 1/3 to 1/2 is placed at the bottom, and the AC input / output / DC input circuit unit 2 having the input / output terminal block 202a is placed at the top, When the battery 11 is maintained / replaced, the hanging wires 202b to 202i connected to the input / output terminal block 202a cover the front surface of the battery unit 1 and hinder the battery 11 from being easily replaced. In other words, there is a problem that the advantage of the front access structure that the handling of the built-in battery and the like becomes easy cannot be fully utilized.

In the input / output circuit section 202, an input / output terminal block 202a and an input / output EMI filter substrate 202
j and 202k are separated from each other, and there is a problem that handling is inconvenient until the mounting is performed on the mounting table 220.

Each L in the LC filter section 203 is
In the connection in the capacitor circuit for the C filter, the connection is complicated due to the large number of electric wires required for these connections, and it takes a lot of time to assemble the device, which is not efficient, and is not efficient during assembly and maintenance. However, there is a problem that the handling in the case of cannot be performed easily.

Further, in the power conversion circuit section 204,
The loss and heat generated by the inverter input DC voltage control IGBT 242f and the bypass circuit thyristors 242g to 242i are reduced by the converter IGBT 242c, the inverter IGBT 242d, and the step-up chopper IGB.
The thyristors 242g to 242i for the bypass circuit are frequently used in other IGBTs 242c to 242c.
This is very small compared to the frequency of use of 2f. That is, the amount of heat generated differs depending on the location where the component is arranged. However, the cooling fin unit 242a is provided below all IGBTs and thyristors. In other words, the lower part of the large heat generating part,
Since the cooling fin unit 242a is evenly provided on the lower part of the component that generates less heat, a cooling fin having an excessive size is provided for some components more than the cooling fin required for the original cooling. In addition, the cooling efficiency of the IGBT and the thyristor deteriorates, the weight of the uninterruptible power supply increases, the cost increases, and handling of the uninterruptible power supply when moving is difficult.

Further, as shown in FIGS. 9 and 10, the conventional LC filter unit 203 and the power conversion circuit unit 204 are equipped with cooling fans 231 and 241 respectively, so that two cooling fans are provided. Accordingly, there is a problem that the volume of the uninterruptible power supply increases, the weight increases, the cost increases, and handling of the uninterruptible power supply becomes difficult.

The present invention has been made to solve the above-described problems, and has as its object to provide an uninterruptible power supply that is easy to handle.

[0014]

An uninterruptible power supply according to the present invention includes a battery unit having a removable battery, and a plurality of power input terminals and power output terminals including an AC input terminal and an AC output terminal. And an input / output circuit unit that outputs power from the AC output terminal using power input from an AC power supply connected to the AC input terminal, and stores the power in the battery when the AC power supply fails. In the uninterruptible power supply which outputs AC power from the AC output terminal using the obtained DC power, the input / output circuit section is arranged above the battery section.

Further, an uninterruptible power supply according to the present invention
A battery unit having a battery, and an input / output circuit unit including a power input / output terminal block including an AC input terminal and an AC output terminal, using an electric power input from an AC power supply connected to the AC input terminal. An uninterruptible power supply device that outputs power from the AC output terminal and outputs AC power from the AC output terminal using DC power stored in the battery when the AC power supply fails, The circuit unit has an input-side EMI filter circuit and an output-side EMI filter circuit that suppress emission of noise to the outside, and connects the input-side EMI filter circuit and the output-side EMI filter circuit with the power input / output terminal block. On the same board, connect the AC input terminal of the input / output terminal block and the input terminal of the input side EMI filter circuit, and It is obtained so as to connect the output terminal and the output terminal of the output side EMI filter circuit.

Further, the uninterruptible power supply according to the present invention comprises:
A battery unit having a battery, and an input / output circuit unit having a plurality of power input terminals and a power output terminal including an AC input terminal and an AC output terminal are provided, and are input from an AC power supply connected to the AC input terminal. Using power, and outputting power from the AC output terminal, at the time of power failure of the AC power supply, using DC power stored in the battery, in the uninterruptible power supply device that outputs AC power from the AC output terminal , A filter capacitor circuit having a converter input-side LC filter capacitor and a filter capacitor circuit having an inverter output-side LC filter capacitor, wherein the converter input-side LC filter capacitor or the inverter output-side LC is provided.
At least one of the filter capacitors is mounted on a printed circuit board on which wiring is patterned.

Further, the uninterruptible power supply according to the present invention
A battery unit having a battery, an AC input terminal, and an input / output circuit unit including a plurality of power input terminals and a power output terminal including an AC output terminal are provided.The input unit receives an input from an AC power supply connected to the AC input terminal. An uninterruptible power supply device that outputs power from the AC output terminal using the DC power stored in the battery while power is being output from the AC output terminal using the AC power terminal. , An IGBT for a converter, an IGBT for an inverter, an IGBT for a step-up chopper, an IGBT for DC voltage control, and a power conversion circuit unit having a plurality of thyristors. IG
In the vicinity of the area including the lower part of the BT, the DC voltage control I
A cooling fin unit having a rectangular planar shape is provided in a region not including the lower portion of the GBT.

An uninterruptible power supply according to the present invention includes a battery unit having a battery, and an input / output circuit unit having a plurality of power input terminals and a power output terminal including an AC input terminal and an AC output terminal. Using power input from an AC power supply connected to an AC input terminal, power is output from the AC output terminal, and at the time of a power outage of the AC power supply, the AC power is stored using the DC power stored in the battery. In an uninterruptible power supply that outputs AC power from an output terminal, an IGBT for a converter, an IGBT for an inverter, an IGBT for a boost chopper, and an I for a DC voltage control are provided.
A power conversion circuit unit having a GBT and a plurality of thyristors, wherein the power conversion circuit unit is provided in a region including a lower portion of the converter IGBT, the inverter IGBT, and the booster chopper converter IGBT. A fin unit, a cooling fan for blowing air to the cooling fin unit, a reactor for a converter input-side LC filter and an inverter output-side LC filter disposed behind the fin unit in a blowing direction of the cooling fan. It is provided with a reactor for use.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a perspective view showing a structure of an uninterruptible power supply according to Embodiment 1 of the present invention. In FIG. 1, an uninterruptible power supply 100 includes an AC input / output circuit for inputting / outputting AC and a DC input / output circuit. , An input / output circuit section 2 having a DC input circuit therein, a battery section 1 having a replaceable built-in battery 11 therein, a converter input side LC filter circuit and an inverter output side LC.
An LC filter section 3 having a filter circuit therein and a power conversion circuit section 4 having a circuit for performing power conversion such as a converter and an inverter are sequentially arranged upward. Each of these parts is disposed in each of the divided spaces of the case 100a whose interior is divided into a plurality of spaces by the shelves in the vertical direction.
A front door 5 is provided at the front of 00a, and opening and closing of the front door 5 allows access to the inside of each of the above-described parts. The input / output circuit unit 2 has an input / output terminal block 2a, which is a connection unit used for connection to an external power supply or equipment, and is connected to a three-phase commercial power supply (not shown) by electric wires 2b to 2e. The AC input terminal block of the input / output terminal block 2a is connected, and an external load circuit (not shown) is connected to the AC output terminal of the input / output terminal block 2a by wires 2f to 2i. ing. Each of the LC filter unit 3 and the power conversion circuit unit 4 has a cooling fan 31
And 41 are installed. In addition, a caster 100b is attached to a lower portion of the uninterruptible power supply 100, so that the uninterruptible power supply 100 can be moved as needed.

FIG. 11 is a circuit diagram schematically showing the uninterruptible power supply according to the first embodiment of the present invention as a single-phase connection.
In the figure, an input terminal 101, which is an AC input terminal of an input / output terminal block 2a connected to a commercial power supply, is connected to a converter 104 via an input EMI filter 102 and an input LC filter 103 including a reactor L1 and a capacitor C1. Is connected to Converter 104 is connected to inverter 105, and inverter 105 is connected to reactor L
Output-side LC filter 10 including capacitor 2 and capacitor C2
6 and an output terminal EMI filter 107, and an output terminal 108 which is an AC input / output terminal of the input / output terminal block 2a. The EMI filter 102 and the EMI filter 107 are connected via a bypass thyristor 109. Converter 104 and inverter 105
A capacitor CD1 and a capacitor CD2 which are connected in series are provided between them, and an intermediate point between them is grounded. The capacitors CD1 and CD2
Are connected to both ends of these capacitors CD1, C
A balancer 110 for keeping the voltage between D2 uniform is connected. An output side of the converter 104, that is, an input side of the inverter 105, is connected to a chopper 111 for boosting a voltage to a voltage necessary for the operation of the converter 104 and the inverter 105.
1 is connected to the built-in battery 11 with the coil L3 interposed therebetween. A charger 112 is provided in parallel with the chopper 111 and the coil L3. The input terminal 10 shown in FIG.
1, the output terminal 108, the EMI filter 102, and the EMI filter 107 constitute the input / output circuit unit 2 of FIG. 1, the charger 112 and the built-in battery 11 constitute the battery unit 1, and the input-side LC filter 103 and the output-side LC Filter 1
Reference numeral 06 constitutes the LC filter unit 3, and the other parts constitute the power conversion circuit unit 4.

Next, the operation will be described. When the input from the commercial power supply is normal, the AC power input from the input terminal 101 of the input / output terminal block 2a is converted into DC power by the converter 104 in the power conversion circuit unit 4, and the DC power is further converted. The power is converted into AC power by the inverter 105, and the output terminal 1 of the input / output terminal block 2a is
08 is output. In addition, DC power output from converter 104 is input to charger 112, which charges internal battery 11.

When the commercial power supply is abnormal, the built-in battery 1
DC power is supplied from 1 to the inverter 105 via the chopper 111, and this power is converted into AC power by the inverter 105 and output from the output terminal 108.

If the converter 104 or the inverter 105 fails, the bypass thyristor 109
, AC power is supplied from the input terminal 101 to the output terminal 108.

The input side LC filter 1 of the LC filter unit 3
03, the output-side LC filter 106 detects that the converter input voltage and the inverter output voltage have a PWM (Pulse Width Modul).
ation: pulse width modulation) and functions as a harmonic removal filter for converting a distorted waveform generated due to the control into a sine wave without distortion.

The input EMI filter 102 and the output EMI filter 107 are connected to the uninterruptible power supply 100.
It functions as a filter for preventing noise generated inside from being emitted to the outside.

Uninterruptible power supply 1 according to Embodiment 1
In the case 00, the input / output circuit unit 2 is disposed in the lowermost space of the case 100a, and the battery unit 1 is provided in the lower space. Therefore, the electric wire 2b connected to the input / output terminal block 2a of the input / output circuit unit 2
Or 2i does not hang down and cover the front of the battery unit 1, and when the built-in battery is maintained or replaced,
The electric wires connected to the input / output terminal block 2a can be kept out of the way. Further, the battery unit 1 is disposed on the input / output circuit unit 2, but in the uninterruptible power supply,
Normally, since the total weight of the battery unit and the input / output circuit unit occupies more than half of the whole, the center of gravity of the entire uninterruptible power supply 100 is located on the lower side, and there is no risk of falling.

According to the first embodiment, maintenance and replacement of the built-in battery can be facilitated, and an uninterruptible power supply that can be easily handled by utilizing the advantages of the front access structure can be provided. .

In the first embodiment, it is sufficient that the battery section 1 is disposed above the input / output circuit section 2, and other members and the like are provided between the input / output circuit section 2 and the battery section 1. The same effect as that of the first embodiment can be obtained by arranging. Further, the input / output circuit unit 2 may be arranged at a position other than the lowermost position, and the same effect as in the first embodiment can be obtained.

Embodiment 2 FIG. 2 is a diagram showing an internal structure of an input / output circuit unit of an uninterruptible power supply according to Embodiment 2 of the present invention, and FIG.
(b) is a side view. The input / output circuit unit of the uninterruptible power supply according to the second embodiment includes an input-side EMI filter circuit 20 provided on one substrate 22 for removing propagation noise inside the uninterruptible power supply, and an output. A side EMI filter circuit 21 and an input / output terminal block 20a are provided. The circuit configuration of the entire uninterruptible power supply according to the second embodiment is the same as the circuit shown in FIG. 11 in the first embodiment, and the input-side EMI filter circuit 20 and the output-side EMI filter circuit 21 However, the input-side EMI filter 10 of the circuit diagram shown in FIG.
2 and the output side EMI filter 107, respectively. The input / output terminal block 20a is the input side EMI filter circuit 2.
0 and the inner terminal 24 for connecting to the output terminal of the output side EMI filter circuit 21 are connected to the uninterruptible power supply 1
00 EMI filter circuit 2
The input terminal 0 and the output terminal of the output side EMI filter circuit 21 are connected to each other by a wiring 23. The inner terminal 24 is an outer terminal 25 provided outside the input / output terminal block 20a.
Is connected to

According to the second embodiment, the input side EMI
The filter circuit 20, the output-side EMI filter circuit 21, and the input / output terminal block 20a are provided on the same substrate 22, and are connected to each other by the wiring 23. The number of wires required to connect the filter circuit and the output-side EMI filter circuit to the terminals of the input / output terminal block can be reduced, the assembly can be facilitated, and the input-side EMI filter circuit can be used during assembly and maintenance. In addition, the output-side EMI filter circuit and the input / output terminal block 20a can be handled as a single unit, and an uninterruptible power supply that can be easily handled is provided.

Embodiment 3 FIG. 3 is a perspective view showing a structure of a capacitor circuit for a converter input-side LC filter of an LC filter unit of an uninterruptible power supply according to Embodiment 3 of the present invention. , 32b, V-phase input-side filter capacitors 32e and 32f, and W-phase input-side filter capacitors 32i and 32j are mounted on a printed circuit board 32t on which wiring (not shown) is patterned. Filter capacitors 32a and 32b
t, are connected in parallel with each other, and similarly, V-phase filter capacitors 32e to 32f,
And the W-phase filter capacitors 32i to 32j,
One terminal of each of the filter capacitors connected in parallel in each of the U, V, and W phases is connected to the printed circuit board 32t by wiring provided on the printed circuit board 32t.
The terminals are connected to the U, V, W phase terminal blocks 32u to 32w via the wiring on 2t, and the other terminal is connected to the neutral point terminal block 32x. The circuit configuration of the entire uninterruptible power supply according to the third embodiment is the same as the circuit shown in FIG. 11 in the first embodiment, and the converter input-side filter circuit is the input side filter shown in FIG. L
C filter 103, and each of the capacitors 32a, b,
e, f, i, j correspond to the capacitor C1 shown in FIG.

According to the fourth embodiment, the filter capacitors 32a, 32b, 32e, 32f, 32i, and 32j are mounted on the printed circuit board 32t on which the wiring is already patterned, so that the filter capacitors can be connected. The number of electric wires required for connection is reduced, the assembling is easy and efficient, and there is an effect that an uninterruptible power supply can be provided that is easy to handle during assembly and maintenance. In addition, since the filter capacitor terminals are fixed to the printed wiring and solder material during mounting, no mounting member is required to mount the filter capacitor to the board with screws, etc., and the space required for mounting the filter capacitor is reduced. Can be achieved.

Although the converter input filter circuit has been described in the third embodiment, in the present invention, a capacitor for an inverter output side LC filter of an LC filter unit corresponding to the output LC filter 106 shown in FIG. It may be applied to a circuit. Since the inverter output side LC filter capacitor circuit has the same structure as the converter input side LC filter capacitor circuit except that the number of capacitors connected in parallel is different,
An effect similar to that of the third embodiment is provided.

Embodiment 4 4 (a) and 4 (b) are diagrams showing a structure of a main part of a power conversion circuit unit of an uninterruptible power supply according to Embodiment 4 of the present invention. FIG. 4 (a) is a right side view, FIG. 4B is a plan view seen from above. In the figure, the cooling fin unit 42a
However, a fin base 42b having a larger area than the fin unit 42a is attached to the upper part of the fin unit 42a. Here, the cooling fin unit 42a having a structure in which a plurality of metal plates are arranged in parallel in the air blowing direction with a predetermined gap is used, but a cooling fin having another structure may be used. Fin unit 4
On the fin base 42b in the area above 2a, the IGBT 42c for the converter, the IGBT 42d for the inverter, the IGBT 42e for the boost chopper for boosting the battery voltage to the DC voltage required for driving the inverter,
And only thyristors 42g and 42h forming a bypass circuit for supplying power from the AC input circuit of the uninterruptible power supply to the load circuit when the inverter is overloaded or failed. On the fin base 42b other than the area on the fin unit 42a, the DC voltage control IGBT 42f of the inverter input and the IGBT 42f for supplying power from the AC input circuit of the uninterruptible power supply to the load circuit when the inverter is overloaded or failed. A thyristor 42i forming a bypass circuit is arranged. The circuit configuration of the uninterruptible power supply according to the fourth embodiment is the same as the circuit shown in FIG.
The GBT 42c is a component of the converter 104 of FIG.
The GBT and the inverter IGBT 42d are an IGBT and a DC voltage control IGB that constitute the inverter 105 of FIG.
T42f is an IGB constituting the balancer 110 of FIG.
T, the booster chopper IGBT 42e is the IGBT of the chopper 111 in FIG. 11, and the thyristors 42g to 42i are
A thyristor constituting the bypass thyristor 109 of FIG.
Respectively.

As described in the above prior art,
In the power conversion circuit section 4, the inverter input DC voltage control IGBT 42f and the bypass circuit thyristor 42
g to 42i are generated by the converter I
It is very small compared to the loss and heat generated by the GBT 42c, the inverter IGBT 42d, and the step-up chopper IGBT 42e.
The frequency of use of 2g-42i is different from other IGBTs 42c-42f.
Is very small compared to the frequency of use. In other words, the cooling fin unit 42a has an IGBT 42c for the converter, an IGBT 42d for the inverter, and an IGBT 4
2e, the IGBT 42f for controlling the inverter input DC voltage and the thyristor 42g for the bypass circuit.
The heat generated by the cooling fan unit 42a may be released from the cooling fan unit 42a after propagating through the fin base 42b. Therefore, in the fourth embodiment, the cooling fin unit 4 is considered in consideration of the loss and heat generated by each IGBT and thyristor and the frequency of use of each IGBT and thyristor.
2a is the converter IGBT 42c and the inverter IG
The IGBT 42c for the converter, the IGBT 42d for the inverter, the IGBT 42e for the boost chopper, the IGBTs 42g and 42h
The cooling fin unit 42a is provided only in the lower part of the fin. At this time, the converter IGBT 42c, the inverter IGBT 42d, and the step-up chopper IGBT 42e
When the cooling fin unit 42a is arranged only at the lower part of the thyristor 4, the cooling fin unit 42a has a planar shape other than a rectangular shape, and the processing cost increases.
By arranging the cooling fin unit also in the lower part of 2g and 42h, the planar shape of the cooling fin unit 42a is made rectangular and the processing cost of the cooling fin unit 42a is suppressed.

As described above, according to the fourth embodiment, the size of the cooling fin unit 42a can be reduced as compared with the size of the conventional cooling fin unit. And, by thus reducing the size of the cooling fin unit 42a, the cooling efficiency of the IGBT and the thyristor is improved.
Further, since the size of the cooling fin unit 42a is reduced, the weight of the cooling fin unit 42a is reduced,
Lower costs. As a result, there is an effect that the weight of the uninterruptible power supply device is reduced, the cost is reduced, and the handling of the uninterruptible power supply device when moving is easy.

Embodiment 5 5 (a) and 5 (b) are diagrams showing a structure of a main part of a power conversion circuit unit of an uninterruptible power supply according to Embodiment 5 of the present invention, and FIG. 5 (a) is a right side view, FIG. 5B is a plan view seen from above. In FIG.
The same reference numerals indicate the same or corresponding parts. The uninterruptible power supply according to the fifth embodiment includes a converter input-side filter reactor 33a at a position rearward of the cooling fin unit 42a with respect to the blowing direction of the cooling fan 41 of the power conversion circuit unit according to the fourth embodiment. To 33c,
And a reactor circuit 33 including inverter output side filter reactors 33d to 33f, and the reactor circuit 33 is mounted on a mounting base 40.
It is installed above. Although not shown, the LC filter unit of the uninterruptible power supply according to the fifth embodiment includes:
The circuit corresponding to the reactor circuit 33 has been removed. The circuit configuration of the uninterruptible power supply according to the fifth embodiment is similar to the circuit shown in FIG. 11 in the first embodiment, and converter input filter reactors 33a to 33c are connected to reactor L1 in FIG.
, The inverter output filter reactor 33d
Reference numerals 33f to 33f correspond to the reactor L2 in FIG.

Usually, the exhaust temperature of the cooling fin unit 42a is much lower than the temperature during operation of the reactors 33a to 33f. Taking this into consideration, the reactor circuit 33 can be sufficiently cooled by sending the exhaust gas of the cooling fin unit 42a to the reactor circuit 33. That is, in the fifth embodiment,
With the structure in which the cooling fin unit 42a and the reactor circuit 33 are sequentially arranged in the direction in which the cooling fan 41 blows, the reactors 33a to 33f can be cooled by exhausting the cooling fin unit 42a.

As described above, the structure in which the reactors 33a to 33f are cooled by the exhaust of the cooling fin unit 42a eliminates the need for the cooling fan of the reactor circuit as described in the related art. Therefore, according to the fifth embodiment, the volume of the uninterruptible power supply is reduced, the weight is reduced, the cost is reduced, and handling during transportation is reduced by the reactor cooling fan which is no longer required. This has the effect of being easier.

[0040]

As described above, according to the present invention, a battery unit having a removable battery, and an input / output having a plurality of power input terminals and power output terminals including an AC input terminal and an AC output terminal are provided. And a circuit unit, using the power input from the AC power supply connected to the AC input terminal to output power from the AC output terminal, and when the AC power supply fails, the DC stored in the battery In the uninterruptible power supply device that outputs AC power from the AC output terminal using electric power, the input / output circuit unit is arranged below the battery unit. It no longer hangs down and covers the front of the battery, preventing wires connected to the input / output terminal block from getting in the way during maintenance or replacement of the built-in battery. It can be, built-in battery maintenance, as facilitate the exchange, there is an effect that can provide an easy uninterruptible power supply of handling.

Further, according to the present invention, there is provided a battery unit having a battery, and an input / output circuit unit having a power input / output terminal block including an AC input terminal and an AC output terminal,
Using power input from an AC power supply connected to the AC input terminal, power is output from the AC output terminal, and at the time of a power outage of the AC power supply, using DC power stored in the battery, In the uninterruptible power supply device that outputs AC power from an AC output terminal, the input / output circuit unit includes an input-side EMI that suppresses emission of noise to the outside.
A filter circuit and an output-side EMI filter circuit, wherein the input-side EMI filter circuit and the output-side EMI filter circuit and the power input / output terminal block are arranged on the same substrate, The terminal is connected to the input terminal of the input-side EMI filter circuit, and the AC output terminal of the input / output terminal block is connected to the output terminal of the output-side EMI filter circuit. While reducing the number of wires required for connection between terminals,
The input-side EMI filter circuit and the output-side EMI filter circuit and the power input / output terminal block can be integrally handled at the time of assembly or maintenance, and there is an effect that an uninterruptible power supply device that can be easily handled can be provided.

According to the invention, there is provided a battery unit having a battery, and an input / output circuit unit having a plurality of power input terminals and power output terminals including an AC input terminal and an AC output terminal. Using the power input from the AC power supply connected to the terminal, the power is output from the AC output terminal, and at the time of a power failure of the AC power supply, the DC output power is stored using the DC power stored in the battery. An uninterruptible power supply that outputs AC power from a converter, comprising: a filter capacitor circuit having a converter input-side LC filter capacitor; and a filter capacitor circuit having an inverter output-side LC filter capacitor. At least a capacitor or a capacitor for the inverter output side LC filter On the other hand, because the wiring is mounted on a printed circuit board with a pattern, the number of wires required for connection between the filter capacitors can be reduced, and assembly can be performed easily and efficiently, There is an effect that an uninterruptible power supply that is easy to handle can be provided.

Further, according to the present invention, there is provided a battery unit having a battery, and an input / output circuit unit having a plurality of power input terminals and power output terminals including an AC input terminal and an AC output terminal. Using the power input from the AC power supply connected to the input terminal, power is output from the AC output terminal, and when the AC power supply fails, the DC output is stored using the DC power stored in the battery. In an uninterruptible power supply that outputs AC power from a terminal, an IGBT for a converter and an IGB for an inverter
T, IGBT for boost chopper, IGB for DC voltage control
T, and a power conversion circuit unit having a plurality of thyristors, the converter IGBT and the inverter I
A cooling fin unit having a rectangular planar shape is provided in a region near the region including the lower portion of the IGBT for the GBT and the step-up chopper and not including the lower portion of the IGBT for the DC voltage control. It is possible to provide an uninterruptible power supply that can be reduced in size and cost, and can be reduced in weight and easily handled.

According to the present invention, there is provided a battery unit having a battery, and an input / output circuit unit having a plurality of power input terminals and power output terminals including an AC input terminal and an AC output terminal. Using the power input from the AC power supply connected to the terminal, the power is output from the AC output terminal, and at the time of a power failure of the AC power supply, the DC output power is stored using the DC power stored in the battery. IGBT for converter and IGB for inverter
T, IGBT for boost chopper, IGB for DC voltage control
T, and a power conversion circuit unit having a plurality of thyristors.
BT, IGBT for inverter, IGBT for boost chopper
A cooling fin unit disposed in a region including a lower portion of the cooling fan, a cooling fan for blowing air to the cooling fin unit, and a converter input disposed behind the fin unit in a blowing direction of the cooling fan. Side LC
Since the reactor for the filter and the reactor for the LC filter on the inverter output side are provided, the fan for cooling the reactor can be reduced, and the volume and weight of the uninterruptible power supply can be reduced. There is an effect that a power supply device can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of an uninterruptible power supply according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view showing an internal structure of a main part of an input / output circuit unit of an uninterruptible power supply according to Embodiment 2 of the present invention.

FIG. 3 is a perspective view illustrating a structure of a capacitor circuit for an LC filter on a converter input side of an LC filter unit of an uninterruptible power supply according to Embodiment 3 of the present invention.

FIG. 4 is a diagram showing a structure of a main part of a power conversion circuit unit of an uninterruptible power supply according to Embodiment 4 of the present invention.

FIG. 5 is a diagram showing a structure of a main part of a power conversion circuit unit of an uninterruptible power supply according to Embodiment 5 of the present invention.

FIG. 6 is a perspective view showing a structure of a conventional uninterruptible power supply.

FIG. 7 is a perspective view showing an internal structure of a main part of an input / output circuit unit of a conventional uninterruptible power supply.

FIG. 8 is a perspective view illustrating a structure of a capacitor circuit for a converter input side LC filter of an LC filter unit of a conventional uninterruptible power supply.

FIG. 9 is a diagram showing a structure of a main part of a power conversion circuit unit of a conventional uninterruptible power supply.

FIG. 10 is a diagram showing a structure of a main part of a power conversion circuit unit and an LC filter unit of a conventional uninterruptible power supply.

FIG. 11 is a circuit diagram of the uninterruptible power supply according to Embodiment 1 of the present invention.

[Explanation of symbols]

1,201 battery unit, 2,202 input / output circuit unit, 2a, 202a input / output terminal block, 2b-2i, 20
2b to 202i, 202l to 202s, 232c, 23
2d, 232g, 232h, 232k, 232l, 23
2m, 232n, 232o, 232q, 232r, 23
2s electric wire, 3,203 LC filter part, 4,204
Power conversion circuit, 5,205 Front door, 11, 211
Built-in battery, 20 input EMI filter circuit,
20a input / output terminal block, 21 output side EMI filter circuit, 22 filter board, 23 wiring, 24 inside terminal, 25 outside terminal, 31, 41 cooling fan, 32
a, 32b, 232a, 232b U-phase converter input side filter capacitors, 32e, 32f, 232e,
232f V-phase converter input-side filter capacitor, 32i, 32j, 232i, 232j W-phase converter input-side filter capacitor, 32u to 32x terminal block, 32t printed circuit board, 33,233 reactor circuit, 33a to 33f, 233a to 233f reactor , 40, 240 Mounting base, 41, 241 Cooling fan, 42a, 242a Cooling fin unit, 42
b, 242b Fin base, 42c, 242c IGBT for converter, 42d, 242d I for inverter
GBT, 42e, 242e IGBT for boost chopper,
42f, 242f DC voltage control IGBT 42g,
42h, 42i, 242g, 242h, 242i Thyristor, 100, 200 uninterruptible power supply, 100a,
200a case, 100b, 200b caster,
101 input terminal, 102 input side EMI filter, 1
03 converter input side LC filter, 104 converter, 105 inverter, 106 inverter output side LC filter, 107 output side EMI filter, 108
Output terminal, 109 bypass thyristor, 110
Balancer, 111 chopper, 112 charger, 202
j Input side EMI filter board, 202k Output side EM
I filter board, 230 mounting base, 232p terminal block, 235 mounting member.

Claims (5)

[Claims] A battery unit having a removable battery; and an input / output circuit unit having a plurality of power input terminals and a power output terminal including an AC input terminal and an AC output terminal. Using the power input from the connected AC power supply, the power is output from the AC output terminal, and at the time of a power outage of the AC power supply, the DC output power is stored in the battery, and the AC power is output from the AC output terminal. An uninterruptible power supply for outputting electric power, wherein the input / output circuit unit is disposed above the battery unit. And a battery unit having a battery, and an input / output circuit unit having a power input / output terminal block including an AC input terminal and an AC output terminal. The input / output circuit unit receives an input from an AC power supply connected to the AC input terminal. An uninterruptible power supply device that outputs power from the AC output terminal using the DC power stored in the battery while power is being output from the AC output terminal using the AC power terminal. In the above, the input / output circuit section has an input-side EMI filter circuit and an output-side EMI filter circuit for suppressing emission of noise to the outside, and the input-side EMI filter circuit and the output-side EMI filter circuit, and the power input / output circuit. Place the output terminal block on the same board and connect the AC input terminal of the input / output terminal block to the input terminal of the input side EMI filter circuit. Uninterruptible power supply being characterized in that to connect the AC output terminal of the power terminal block and the output terminal of the output side EMI filter circuit. 3. An AC power supply comprising: a battery unit having a battery; and an input / output circuit unit having a plurality of power input terminals and a power output terminal including an AC input terminal and an AC output terminal, and an AC connected to the AC input terminal. Using the power input from the power supply, the power is output from the AC output terminal, and at the time of the power failure of the AC power supply, the AC power is output from the AC output terminal using the DC power stored in the battery. The uninterruptible power supply device comprises a filter capacitor circuit having a converter input-side LC filter capacitor and a filter capacitor circuit having an inverter output-side LC filter capacitor, wherein the converter input-side LC filter capacitor or the inverter output-side LC is provided. At least one of the filter capacitors has a wiring pattern Uninterruptible power supply, characterized by being mounted on a printed circuit board that is. 4. A battery unit having a battery, an input / output circuit unit having a plurality of power input terminals and a power output terminal including an AC input terminal and an AC output terminal, and connected to the AC input terminal. Using the power input from the AC power supply, the power is output from the AC output terminal, and at the time of the power failure of the AC power supply, the AC power is output from the AC output terminal using the DC power stored in the battery. A power conversion circuit unit having a converter IGBT, an inverter IGBT, a step-up chopper IGBT, a DC voltage control IGBT, and a plurality of thyristors, wherein the converter IGBT, the inverter IGBT, DC voltage control IG in the vicinity of the region including the lower portion of the booster chopper converter IGBT. In a region that does not include the lower T, then the uninterruptible power supply, wherein a planar shape with a fin unit for cooling a rectangular. 5. An AC power supply comprising: a battery unit having a battery; and an input / output circuit unit having a plurality of power input terminals and a power output terminal including an AC input terminal and an AC output terminal, and an AC connected to the AC input terminal. Using the power input from the power supply, the power is output from the AC output terminal, and at the time of the power failure of the AC power supply, the AC power is output from the AC output terminal using the DC power stored in the battery. The uninterruptible power supply device includes an IGBT for a converter, an IGBT for an inverter, an IGBT for a step-up chopper, an IGBT for DC voltage control, and a power conversion circuit unit having a plurality of thyristors. IGBT, IGBT for inverter, IGB for converter for boost chopper
A cooling fin unit disposed in an area including a lower portion of the T; a cooling fan for blowing air to the cooling fin unit; and a converter disposed behind the fin unit in a direction in which the cooling fan blows air. Input side LC
An uninterruptible power supply comprising a filter reactor and an inverter output side LC filter reactor.