JP3279130B2 - Power repeater, power supply and multi-output power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply repeater suitable for connecting and connecting a plurality of power supplies, a power supply device using the power supply repeater, and a multi-output (multi-output) power supply providing a plurality of different outputs. Related to the device.

[0002]

2. Description of the Related Art Conventionally, when a switching power supply is used for equipment requiring reliability such as plant equipment,
In some cases, a plurality of power supplies are operated in parallel to back up the power supply. In addition, in the expansion of factory facilities,
In some cases, the capacity of the power supply is insufficient and the power supply is increased to compensate for the insufficient capacity.

A power supply used in such a case is required to have a function of balancing currents with each other in addition to a power input terminal and a power output terminal. The number of terminals is large.

[0004] When the load is operated in parallel with such a power supply, as shown in FIG.
0 _1, 50 ₂ each of the AC input terminals 51 and 51 connected to the AC input side in parallel, each of the DC output terminals 5
2 and 52 are connected in parallel to the load side, and respective current balance terminals 53 and 53 are connected to each other.

In connection wiring for actual parallel operation, as shown in FIG. 11, an AC input line 54 is commonly connected between the AC input terminals 51, 51, and the respective DC output terminals are connected. DC output line 55 between terminals 52
And a current balance line 56 is connected between the respective current balance terminals 53, 53 in order to balance the currents in the parallel operation.

[0006] Each of these power supplies 50 ₁ and 50 ₂
For example, it is attached to a board or the like in which an attachment hole is formed by screws using an attachment fitting 11.

[0007]

The connection work for operating a plurality of power supplies having a large number of connection terminals in parallel by using wiring as described above is complicated, time-consuming and time-consuming. In addition, when mounting each power supply, it is necessary to make a mounting hole in the panel for each power supply and mount it with mounting brackets. Therefore, if the number of power supplies to be operated in parallel increases, the number of mounting steps increases accordingly. There is.

SUMMARY OF THE INVENTION It is an object of the present invention to enable connection of a plurality of power supplies for parallel operation or connection in other forms of use by a simple operation, and to reduce the number of steps for mounting the power supply. .

[0009]

The power supply repeater of the present invention comprises:
At least two power supplies are arranged between the two power supplies.
For AC input, DC output and current balance detection in front of
And each of the terminals has
The power connection part and the engagement part corresponding to each terminal are
The power supply repeater is provided on each side of the power supply.
The power supply connections provided are electrically connected to each other.
A relay connection portion for relay connection to the
And an engaging portion that is integrally connected .

The power supply device of the present invention has an AC input
Each terminal for current output and current balance detection
And corresponding to each terminal on the side
Power supply connection portion and a plurality of engagement portions each having an engagement portion.
A power supply and at least two of said power supplies,
The power supply connection provided on each side of the power supply.
A relay connecting portion for electrically connecting the connecting portions to each other,
An engaging portion that engages with the engaging portion and is integrally coupled to each other.
And at least one of the power supply repeaters .

In the power supply device according to the present invention, the relay connection portion of the power supply repeater has a terminal portion protruding outside, and the power supply connection portion of the power supply has a terminal portion into which the terminal portion protruding outside is inserted. You may have it.

[0012]

Further, the power supply device of the present invention, the pre-Symbol power relay, may be connected to the power supply to the parallel operation state.

Further, in the power supply device of the present invention, the power supply
The repeater may be configured to include a current balance detection unit that detects a current balance state of each of the power supplies connected in the parallel operation state.

[0015]

The multiple-output power supply unit of the present invention, the straight in front
With each terminal for current output and AC input
In addition, the side corresponding to the terminal for the AC input
Power connection units and an engagement unit.
A source and at least two power supplies,
The power supply connection provided on each side of both power supplies
A relay connection section for electrically connecting the sections to each other;
And an engaging portion that engages with the joining portion and is integrally connected to each other.
And at least one power supply repeater .

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is an exploded perspective view of a power supply apparatus using a power supply repeater according to the present invention, and FIG. 2 is an assembled perspective view of the power supply apparatus.

Referring to FIG. 1, two switching power supplies 1 ₁ and 1 ₂ operated in parallel have a similar configuration.
Terminal blocks 2 and 3 are provided on the front panel 31.
Front left of the terminal block 2 is made five terminals 2 ₁ to 2 ₅ are arranged vertically, FIG at the upper two terminals DC output terminal 2
_1, 2 _2, an intermediate terminal of the ground terminals 2 _3, the lower two terminals AC input terminal 2 _4, 2 _5. Front right of the terminal block 3, the current balancing terminal 3 _1, 3 ₂ are arrayed vertically.

[0020] Each of the switching power supply 1 _1, 1 ₂ on both sides side panels 4, the upper horizontal row form a four terminal insertion hole 5 ₁ to 5 ₄ are formed at regular intervals on the lower two terminal insertion hole 5 _5, 5 ₆ are formed at a predetermined distance from each other on the side. These power 1 _1, 1 in the center of the end portion of the upper and lower sides of _2, and the engaging recesses 6 are formed, respectively, in parallel operation, the power supply between the opposing surface is opposed to the side surface 4 repeater 7 Is arranged.

The power supply relay 7, the power source 1 _1, 1 6 connection as relay connection unit which is inserted into each terminal insertion hole 5 ₁ to 5 _{6 2} terminals 91 _to 93 to the repeater panel surface 8 on both sides ₆ are provided to protrude. Two connection terminals for connecting the DC output terminals of the four connection terminals of the upper of these connection terminals 91 _to 93 ₆ 9 _1, 9 _2, and the remaining two connection terminals for connecting current balance terminal 9 ₃ , 9 ₄ , and the two lower connection terminals become AC input connection terminals 9 ₅ , 9 ₆ . The center of the end portion of the upper and lower relay panel surface 8 on both sides of the power supply relay 7, integrally as in shown in FIG. 2 engaged with the power source 1 _1, 1 ₂ of the engaging recesses 6 Are formed respectively.

The power supply relay 7, while being inserted through respective connecting terminals 9 ₁ to 9 ₆ power ₁ 1, 1 ₂ of the terminal insertion hole 5 ₁ to 5 _6, power supply 1 ₁ with its engaging portion 10 , 1 by being engaged with the _second engagement recess 6, as shown in Figure 2, the two power supply 1 _1, 1 ₂ assembled integrally. Thus the power relay 7 Power 1 ₁ two assembled integrally with one another for parallel operation through a 1 ₂ is mounted such as appropriately board with the mounting bracket 11 mounted on their sides.

[0023] Power 1 ₁ two are operated in parallel in this way, 1 ₂ connects the AC input lines 12 to the AC input terminal 2 _4, 2 ₅ in the terminal block 2 of one of the power supply 1 ₁ With
DC output terminals 2 _1, 2 ₂ after connecting the DC output line 13, the parallel operation with the power supply relay 7 via only another of the AC input terminal 2 ₄ assembled together, 2 ₅ between the AC input line So that they can be connected, and the DC output terminals 2 ₁ ,
2 ₂ to each other or connect to allow parallel operation with the DC output line, without or connect current balance each other terminals 3 _1, 3 ₂ together with current balance connection line is assembled to allow parallel operation .

Next, with reference to FIG. 3, illustrating the internal structure of the switching power supply ₁ 1, 1 _2. Front panel 31
A cover 14 having a lower surface and a back surface opened so as to form the upper and lower panels 4 and the upper panel 32;
4 has an L-shaped chassis 15 so as to form the bottom panel side and the rear panel side so as to cover the openings at the lower surface and the rear surface, respectively. _1, 1 ₂ of the outer panel structure is formed.

The cover 14, each of the left and right top engaging recesses 6 for engaging the engaging projection 10 of the power supply relay 7 is formed on both side surfaces and the terminal insertion hole 5 ₁ to 5 ₆ A notch 16 is formed, and two rectangular terminal block insertion holes 17 and 18 are formed on the front surface.

The left and right sides of the bottom surface of the chassis 15
An engagement recess 6 that engages with the engagement projection 10 of the splicer 7 is formed.
And two printed circuit boards 19 on its bottom surface.₁,
19_TwoAre erected in close proximity. Each print
Substrate 19₁, 19_TwoHas a DC output connection terminal on the top
Two terminal blocks 20₁, 20_TwoAnd current balance connection
Two terminal blocks 20 for terminals_Three, 20_FourWhen and are juxtaposed
There are two terminal blocks at the bottom for AC input connection terminals
20_Five, 20₆Has been deployed. One more print
Substrate 19₁Has the above-mentioned DC output terminal 2₁, 2_TwoInteract with
Input terminal 2_Four, 2 _FiveAnd ground terminal 2_ThreeThe terminals that make up
Stand 2 and current balance terminal 3₁, 3_TwoConfigure the terminal block
3 are attached. Each printed circuit board 19₁, 1
9_TwoOn top, switching power supply 1₁, 1_TwoConfigure the internal circuit of
Various electronic components to be formed are mounted. Chassis 15
When the cover 14 is placed over the cover, the terminal block insertion hole
The terminal blocks 2 and 3 project from the terminals 17 and 18, and
Terminal insertion hole 5₁~ 5₆Each terminal block 20₁~ 20₆of
The terminal insertion hole faces.

[0027] In this embodiment, the power source connecting portion is constituted by the terminal block 20 ₁ to 20 ₆ and the terminal insertion hole 5 ₁ to 5 _6.

[0028] Figure 4, the power supply ₁ 1, 1 ₂ and power relay 7
FIG. 3 is a block diagram showing the configuration of FIG.

As shown in FIG. 1A, the power supplies 1 ₁ and 1 ₂ include the AC input terminals 2 ₄ and 2 ₅ , the DC output terminals 2 ₁ and 2 _2, and the current balance terminals. It has terminals 3 ₁ and 3 _2, and has an input circuit 21 such as a fuse and a noise filter; a current inrush prevention circuit 22;
A converter transformer 24, a rectifying and smoothing circuit 25,
An overload detection circuit 26 for detecting an overload, an overvoltage detection circuit 27, a switching transistor circuit 28, and a current balance detection circuit 29 for detecting a current balance between power supplies operated in parallel; The operation of the switching transistor circuit 28 performs control to obtain a constant output voltage in response to the outputs of the detection circuits 26, 27, 29, control to prevent overload and overvoltage, and control to balance current. Control circuit 30 for controlling
And

Furthermore, the power source 1 _1, 1 ₂ of this embodiment, in order to relay connection via the power supply relay 7, the terminal block 20 ₅ as connection terminals for the AC input described above, 20 _6, the DC output Terminal blocks 20 ₁ and 20 ₂ as connection terminals for connection, and two pairs of terminal blocks 20 ₃ and 20 ₄ as connection terminals for current balance.

On the other hand, as shown in FIG. 1B, the power supply repeater 7 is a pair of left and right terminals inserted and connected to terminal blocks 20 ₅ and 20 ₆ as connection terminals for AC input on the power supply side. the connecting AC input terminal 9 _5, 9 _6, the terminal block 20 _1, 20 ₂ in the left-right pair of DC output connection terminal inserted connected 9 _1, 9 ₂ as the connection terminals of the DC output of the power supply side, A pair of left and right current balance connection terminals 9 ₃ , which are inserted and connected to terminal blocks 20 ₃ , 20 ₄ as connection terminals for current balance on the power supply side.
And a 9 _4. A pair of left and right AC input connection terminals 9 ₅ and 9 ₆ , a pair of left and right DC output connection terminals 9 ₁ and 9 _2, and a pair of left and right current balance connection terminals 9 ₃ and 9 ₄ are internally connected. . Although the pair of terminals on the power supply side and the repeater side are separate terminals in terms of circuit,
The terminals are commonly connected in the drawings for simplification of the description of the terminals.

The power supply 1 ₁ having the above configuration, 1 ₂ and the power supply relay 7, as shown in FIGS. 1 and 2 described above, one side of the connection terminals 91 _to 93 ₆ of the power supply relay 7 To
Causes respectively inserted into the terminal insertion hole 5 ₁ to 5 ₆ of one of the power supply 1 _1, with its engagement projection 10 is engaged with the engaging recesses 6 of the power supply 1 _1, further power repeater 7 other engaging the connection terminals 91 _to 93 ₆ side, causes respectively inserted into the terminal insertion hole 5 ₁ to 5 ₆ of the other power supply 1 _2, the power supply 1 _second engagement recess 6 with its engagement projection 10 By doing so, they are assembled together.

[0033] Thus two power 1 _1, 1 ₂ which is integrally assembled is mounted like the appropriate board with the mounting bracket 11 attached to their sides. In the conventional example of FIG. 11, the side surface of each of the power sources 50 ₁ and 50 ₂ is attached to the mounting bracket 11.
Although each was attached in, in this embodiment,
Power supply coupled together 1 _1, 1 ₂ side only mounting bracket 1
1, the number of mounting steps can be reduced as compared with the conventional example. In particular, when parallel operation is performed with a large number of power supplies, the effect is remarkable.

Further, the power supply 1 ₁ two mounted in this way, 1 _2, one power 1 ₁ AC input terminals 2 ₄ in the terminal block 2, 2 ₅ to connect the AC input lines 12 while the DC output terminal 2 _1, 2 ₂ it is only necessary to connect the dc output lines 13, as in the conventional example of FIG. 11, the power supply 50
_{The first} and _second AC input terminals 51 and 51 are connected so that they can be operated in parallel by an AC input line 54, and the DC output terminals 52 and 52 are connected so that they can be operated in parallel by a DC output line 55. Terminal 5 for current balance
There is no need to connect the 3 and 53 with each other by the current balance connection line 56, so that wiring can be saved, and the wiring operation can be simplified.

[0035] In this embodiment, the current balance detection circuit 29 for detecting the current balance, although provided to each switching power source 1 _1, 1 _2, another embodiment of the present invention, as shown in FIG. 5 , Switching power supply 1
_1, 1 ₂ instead of providing a current balance detection circuit 29, provided in the power supply relay 7, which may also serve to both supply 1 _1, 1 _2. Thereby, the switching power supplies 1 ₁ and 1 ₂
And the cost can be reduced.
Other configurations are the same as those of the above-described embodiment.

FIG. 6 is an exploded perspective view of another embodiment of the present invention, and FIG. 7 is an assembled perspective view of the embodiment shown in FIGS.
Parts corresponding to those in FIG. 2 are denoted by the same reference numerals.

The switching power supply 1 ₁ ′,
The 1 ₂ ′ and the power relay 7 ′ are not mounted on a board or the like with mounting brackets as in the above-described embodiment, but are mounted on a support rail 33 provided in advance on the board or the like. Therefore, the switching power supplies 1 ₁ ′, 1 ₂ ′ and the power supply repeater 7 ′ are mounted on the mounting recesses 3 so that the rear sides thereof are fitted into the upper and lower ends of the support rail 33.
4, 35 are formed respectively.

In this embodiment, after the switching power supplies 1 ₁ ′ and 1 ₂ ′ and the power supply repeater 7 ′ are mounted on the support rail 33, as shown in FIG. 7, they are integrally assembled as in the above-described embodiment. .

Other configurations are the same as those of the above-described embodiment, and a description thereof will be omitted.

FIG. 8 is an exploded perspective view of another embodiment of the present invention, and FIG. 9 is an assembled perspective view thereof.

In this embodiment, as in the above embodiment,
Switching power supply 1 ₁ of the same output voltage, 1 ₂ a opposed to parallel operation, different output voltages, e.g., 5V output,
This is applied to a multi-output power supply device configured by combining three power supplies 36 to 38 of 12V output and 24V output, that is, a so-called multi-output power supply device.

[0042] Each power source 36 to 38 has a terminal block 39-41 on the front panel, the terminal block 39-41, the DC output terminals 39 _1, 39 _2; 40 _1, 40 _2; 41 _1, 4
12 ₃ , ground terminals 39 ₃ ; 40 ₃ ; 41 ₃ and AC input terminals 39 ₄ , 39 ₅ ; 40 ₄ , 40 ₅ ; 41 ₄ , 41 ₅ are arranged vertically.

Conventionally, in such a multi-output power supply device, for each power supply, its AC input terminal is connected to the AC input side, and its DC output terminal is connected to the load side. For each power supply, it is screwed and attached to a board on which a mounting hole is formed by a mounting bracket.

In this embodiment, in order to reduce the number of wiring steps and the number of mounting steps in the multi-output power supply device, each of the panels on both sides of each of the power supplies 36 to 38 has two terminals for AC input on the lower side. Insertion holes 42 ₁ , 42 ₂ ; 43 ₁ , 4
3 _2; 44 _1, 44 ₂ are formed with each other at a predetermined interval, the terminal insertion holes 42 _1, 42 _2; 43 _1, 4
3 _2; 44 _1, 44 ₂ in the terminal, the power supply ₁ 1 of the above-described embodiments, 1 ₂ Similarly, the AC input terminal 39 ₄ of the terminal block 39 to 41 of the front 39 _5; 40 _4, It is connected to the 41 _4, 41 _5; 40 _5. Engaging recesses 6 are respectively formed at the upper and lower central ends of both side surfaces of the power sources 36 to 38 so that the side panels of the power sources 36 to 38 are opposed to each other, and a power supply relay 45 is provided between the opposed panels. Is arranged.

The power supply repeater 45 has terminal insertion holes 42 ₁ , 42 ₂ ; 4 of the power supplies 36 to 38 on the repeater panel surfaces on both sides thereof.
3 _1, 43 _2; 44 _1, 44 ₂ connecting two AC input as a relay connecting portion capable of inserting the terminal 46 _1, 46 ₂ are provided with protruding, right and left pair of connecting AC input thereto terminals 46 _1, 46 _2, like the power supply relay 7 described above, is connected internally. Engagement projections 10 that can engage with the engagement recesses 6 of the power supplies 36 to 38 are formed at the upper and lower center ends of the repeater panel surface on both sides of the power supply repeater 45.

In the multi-output power supply having such a configuration, the power supply repeater 45 is disposed between the power supplies 36 to 38,
The connection terminals 46 _1, 46 ₂ on both sides of the power source relay 45, terminal insertion holes 42 _1, 4 a corresponding sides of the power 36 to 38
2 _2; 43 _1, 43 _2; 44 _1, 44 ₂ causes respectively inserted, power with its engagement projection 10 36-38
By assembling integrally it is engaged with the engaging recesses 6 of the power supply 36 to 38, the power relay AC input connection terminal 46 ₁ of 45, 46 ₂ each other AC input terminal 3 via a
9 _4, 39 _5; 40 _4, 40 _5; 41 _4, 41 ₅ are relay connection.

Therefore, in the multi-output power supply device thus assembled, as shown in FIG. 9, the AC input terminals 39 ₄ , 3 of the terminal block 39 of one power supply 36 are provided.
9 ₅ may just be connected to AC input line 12, as in the prior art, it is not necessary to connect each of the AC input terminals of each power supply to the AC input line, it is possible to save wires,
Wiring work will be simplified.

Further, in this multi-output power supply device, the side surfaces of the power sources 36 and 38 on both sides may be appropriately mounted on a panel or the like with the mounting bracket 11, and it is not necessary to mount the side surfaces for each power supply with the mounting bracket. In addition, the number of mounting steps is reduced.

As shown in FIG. 9, the DC output terminals 39 ₁ , 39 ₂ ; 40 ₁ , 40 ₂ ; 41 ₁ , 41 ₂ of the power sources 36 to 38 are connected to DC output lines 47, 48, 49
Connected to each other.

In each of the above embodiments, the power supply repeaters 7, 45
Connection of the connection terminals 91 _to 93 _6, 46 _1, 46 _2, though always a configuration that protrudes outwardly, as another embodiment of the present invention, by operating the operation unit, in conjunction therewith The terminal may protrude outward or retreat inward so that the connection terminal does not interfere.

[0051]

As described above, according to the present invention, the AC input, DC output and current
Each power supply connection for balance detection is electrically connected to each other via the relay connection of the power supply repeater arranged between the power supplies, so that multiple power supplies are individually connected as in the conventional example. It is not necessary to perform wiring and wiring can be reduced.

Further, since the relay connection part of the power supply repeater and the power supply connection part of the power supply have a terminal part projecting outside and a terminal part into which the terminal structure is inserted, respectively, the relay connection part of the power supply repeater is provided. By inserting the unit into the power supply connection of the power supply, the connection can be made easily.

Furthermore, since the power supply and the power supply repeater each have an engagement portion that engages with each other and integrally connects them, a plurality of power supplies are individually mounted as in the conventional example. It is not necessary to mount with a metal fitting or the like, and a plurality of power supplies may be integrally mounted with a mounting metal or the like, and the number of mounting steps is reduced. Further, the engaging portion is provided with a power source.
Power supply connection and the power supply repeater connection
Power supply connection and power supply relay
Mechanical strength can be reinforced at the connection with the connection,
To prevent damage due to excessive force.
The reliability of the connection is improved.

[0054] Further, power relay, so connecting the power allows several parallel operating conditions, as in the conventional example, in the case of parallel operation power of multiple power input portion of the plurality of power supply It is no longer necessary to wire and connect the power output section in parallel,
Wiring can be reduced.

[0055] Further, instead of the power supply side, by used also by providing a current balance detector to the power source relay side, it is possible to reduce the cost by simplifying the structure of the power supply.

[0056]

In the multi-output power supply device of the present invention, the power supply connecting portions for AC input of a plurality of power supplies are electrically connected to each other via the relay connecting portion of the power supply repeater disposed between the power supplies. Unlike the conventional example, it is not necessary to individually connect the AC input units of a plurality of power supplies by wiring, and wiring can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a power supply device according to an embodiment of the present invention.

FIG. 2 is an assembled perspective view of the embodiment of FIG. 1;

FIG. 3 is a perspective view showing the structure of the power supply of FIG. 1;

FIG. 4 is a block diagram showing an internal configuration of a power supply and a power supply repeater of the embodiment of FIG. 1;

FIG. 5 is a block diagram corresponding to FIG. 4 of another embodiment of the present invention.

FIG. 6 is an exploded perspective view of still another embodiment of the present invention.

FIG. 7 is an assembled perspective view of the embodiment of FIG. 6;

FIG. 8 is an exploded perspective view of the multi-output power supply device according to one embodiment of the present invention.

FIG. 9 is an assembled perspective view of the embodiment of FIG. 8;

FIG. 10 is an equivalent circuit diagram of a conventional example.

FIG. 11 is a perspective view of a conventional example.

[Explanation of symbols]

1 _1, 1 _2, 36 to 38 Switching power supply 5 ₁ to 5 _6, terminal insertion holes 6 engaging recesses 7,45 power repeater 91 _to 93 _6, 46 _1, 46 ₂ connecting terminal 10 engaging projection

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H02M 3/28 H02M 7/28

Claims (6)

(57) [Claims] An electric power source arranged between at least two power sources.
A power repeater, wherein the two power supplies have an AC input, a DC output, and
With each terminal for flow balance detection,
On its side, the power supply connection section corresponding to each of the terminals
, And an engaging portion, and the power supply repeaters are provided on respective side surfaces of the power supplies.
The power supply connection parts electrically connected to each other.
And the relay connecting portion, which engages with the engaging portion and is integrated with each other.
A power supply repeater, comprising: an engagement portion for coupling . 2. An AC input, DC output, and current
Each terminal has a lance detection terminal.
On the side surface, a plurality of power supplies each having a power connection portion corresponding to each of the terminals and an engagement portion, at least
It is arranged between the two power supplies, and on each side of the two power supplies.
The power supply connections provided are electrically connected to each other.
A relay connection portion for relay connection to the
A power repeater having an engaging portion integrally coupled
A power supply device comprising at least one unit. 3. The power supply repeater, wherein the relay connection part has a terminal part protruding outside, and the power supply connection part of the power supply has a terminal part into which the terminal part protruded outside is inserted. The power supply device according to claim 2. 4. The power supply repeater operates the power supplies in parallel.
4. The power supply according to claim 2, which is connected to a state.
Source equipment. 5. The power supply repeater is in the parallel operation state.
Check the current balance status of each of the connected power supplies
And a current balance detecting unit for detecting.
4. The power supply device according to 4. 6. A front panel for the DC output and AC input.
Each terminal has its own
The power supply connection part corresponding to the input terminal for
A plurality of power supplies, each having at least two power supplies;
The power supply connection parts provided on each side of
A relay connection portion for electrical relay connection and the engagement portion
Having an engaging portion that engages and is integrally coupled to each other.
And at least one of the source repeaters.
Multi-output power supply.