KR101165908B1 - Varistor module for protecting AC line - Google Patents

Abstract

A varistor module for alternating current line protection, which is configured as one module to protect a plurality of alternating current lines, is provided. The presented varistor module for AC line protection includes: an upper varistor layer having a plurality of upper varistors formed therein; A lower varistor layer having a plurality of lower varistors formed therein; An electrode pattern formed between the upper varistor layer and the lower varistor layer, one surface of which is electrically connected to the plurality of upper varistors, and the other surface of which is electrically connected to the plurality of lower varistors; A plurality of upper terminal patterns formed on an upper surface of the upper varistor layer and electrically connected to the upper plurality of upper varistors, respectively; And a plurality of lower terminal patterns formed on a lower surface of the lower varistor layer and electrically connected to the plurality of lower varistors, respectively.

Description

Varistor module for protecting AC line

The present invention relates to an AC line protection varistor module, and more particularly, to an AC line protection varistor module installed in an AC line to prevent breakage of the AC line by an electrically connected surge voltage.

The recent rapid development of the semiconductor industry is accelerating the era of ultra high integration for miniaturization and high performance of unit devices. As a result, operating voltages of electronic devices, etc., tend to gradually decrease, while the inflow of surge voltages dissipates large thermal energy enough to burn electronic components, thereby rapidly decreasing the energy capacity of semiconductors. Coping ability fell significantly.

Therefore, since the devices incorporating semiconductor devices are very weak to transient voltages, even when a short transient voltage of several tens of ms is destroyed, the devices are destroyed or degraded, resulting in shortened lifespan and reduced function. This is an important task.

A varistor is a semiconductor device with high nonlinear current-voltage characteristics, and its electrical characteristics are similar to those of a zener diode, which is a constant voltage characteristic, but a composite ceramic device having a larger current and energy capacity.

Nonlinear characteristics of varistors have a very large electrical resistance at low voltages, which are grain boundary phenomena that exhibit nonlinear characteristics that drop sharply above the threshold voltage in any region, depending on the microstructure and size of the device. Has Nonlinear resistance behavior is controlled by processes occurring at grain boundaries, similar to the break down phenomenon observed with back-to-back zener diodes, but with the ability to absorb more energy.

In general, a disk varistor 20 is used in a device (or circuit) composed of alternating current lines to protect a plurality of alternating current lines included in the apparatus. In the AC / DC conversion circuit composed of an AC / DC single phase circuit (Fig. 1 (a)) or an AC / DC three phase circuit (Fig. 1 (b)), a disc varistor 20 is positioned between the AC lines ( See FIG. 1). The disc varistor 20 is also used between the AC lines in the AC noise removing circuit (see Fig. 2) used to remove the AC noise. The disc varistor 20 is also inserted between the AC lines in the TV power circuit (see Fig. 3). Is used.

However, when the disc varistor 20 is used to protect a plurality of AC lines, the number of disc varistors 20 to be applied increases as the number of AC lines increases. That is, as shown in FIG. 4, one disk varistor 20 is required to protect two AC lines, and three disk varistors 20 are required to protect three AC lines. Six disk varistors 20 are required to protect four AC lines.

As described above, in the prior art using the disk varistor for protecting the alternating lines, as the number of disk varistors installed according to the number of alternating current lines to be protected increases, the application area of the disk varistor increases, and the circuit There is a problem in that it is complicated and unsuitable for miniaturizing the device.

The present invention has been proposed in view of the above-described conventional problems, and an object thereof is to provide a varistor module for alternating current line protection configured to protect a plurality of alternating current lines composed of one module.

AC line protection varistor module according to an embodiment of the present invention to achieve the above object, the upper varistor layer having a plurality of upper varistors formed therein; A lower varistor layer having a plurality of lower varistors formed therein; An electrode pattern formed between the upper varistor layer and the lower varistor layer, one surface of which is electrically connected to the plurality of upper varistors, and the other surface of which is electrically connected to the plurality of lower varistors; A plurality of upper terminal patterns formed on an upper surface of the upper varistor layer and electrically connected to the upper plurality of upper varistors, respectively; And a plurality of lower terminal patterns formed on a lower surface of the lower varistor layer and electrically connected to the plurality of lower varistors, respectively.

The sum of the number of upper varistors and the number of lower varistors is the same as the number of alternating current lines to be protected.

The plurality of upper varistors, one end is electrically connected to the electrode pattern and the other end is electrically connected to any one of the plurality of upper terminal patterns, the plurality of lower varistors, one end is electrically connected to the electrode pattern and the other end is a plurality of It is electrically connected to any one of the lower terminal patterns.

The plurality of upper varistors are connected one-to-one with the plurality of upper terminal patterns, and the plurality of lower varistors are one-to-one with the plurality of lower terminal patterns.

The sum of the number of upper terminal patterns and the number of lower terminal patterns is equal to the number of AC lines to be protected.

The plurality of upper terminal patterns and the plurality of lower terminal patterns are connected one-to-one to a plurality of AC lines to be protected.

The plurality of upper terminal patterns and the plurality of lower terminal patterns are connected one-to-one to a plurality of AC lines to be protected through a plurality of lead wires.

A protective layer is formed between the lower surface of the upper varistor layer and the upper surface of the lower varistor layer to cover the electrode pattern.

A first protective layer formed on the upper surface of the lower varistor layer to cover the plurality of upper terminal patterns; And a second protective layer formed on the lower surface of the lower varistor layer to cover the plurality of lower terminal patterns.

The first protective layer and the second protective layer are formed with connection grooves through which lead wires connecting the upper terminal pattern and the lower terminal pattern and the AC line to be protected pass.

A protective layer is formed to cover the upper varistor layer, the lower varistor layer, the electrode pattern, the plurality of upper terminal patterns, and the plurality of lower terminal patterns.

The protective layer is provided with a plurality of connection grooves through which lead wires connecting the upper terminal pattern and the lower terminal pattern and the AC line to be protected pass.

AC line protection varistor module according to another embodiment of the present invention to achieve the above object, the first varistor and the second varistor, the upper varistor layer formed therein; A lower varistor layer having a third varistor and a fourth varistor formed therein; An electrode pattern formed between the upper varistor layer and the lower varistor layer and electrically connected to the first varistor, the second varistor, the third varistor, and the fourth varistor; A first terminal pattern formed on an upper surface of the upper varistor and electrically connected to the first varistor; A second terminal pattern formed on the upper surface of the upper varistor and spaced apart from the first terminal pattern and electrically connected to the second varistor; A third terminal pattern formed on a lower surface of the lower varistor and electrically connected to the third varistor; And a fourth terminal pattern formed on the lower surface of the lower varistor and spaced apart from the third terminal pattern and electrically connected to the fourth varistor.

One end of the first varistor is electrically connected to the electrode pattern, the other end is electrically connected to the first terminal pattern, and the second varistor is electrically connected to one end of the electrode pattern and the other end is electrically connected to the second terminal pattern. The third varistor has one end electrically connected to the electrode pattern, the other end is electrically connected to the third terminal pattern, and the fourth varistor has one end electrically connected to the electrode pattern and the other end is electrically connected to the fourth terminal pattern. Is connected.

The first terminal pattern is electrically connected to the R phase of the AC line, the second terminal pattern is electrically connected to the S phase of the AC line, the third terminal pattern is electrically connected to the T phase of the AC line, and the fourth The terminal pattern is electrically connected to the N phase of the AC line.

The first terminal pattern, the second terminal pattern, the third terminal pattern, and the fourth terminal pattern are electrically connected to the AC line through the lead line.

A protective layer is formed between the upper varistor layer and the lower varistor layer to cover the electrode pattern.

A first protective layer formed on the upper surface of the upper varistor layer to cover the first terminal pattern and the second terminal pattern; And a second passivation layer formed on the lower surface of the lower varistor layer to cover the third terminal pattern and the fourth terminal pattern.

The first protective layer and the second protective layer are formed with a plurality of connection grooves through which a plurality of lead wires connecting the first terminal pattern, the second terminal pattern, the third terminal pattern, and the fourth terminal pattern to the AC line pass.

A protective layer is formed to cover all of the upper varistor layer, the lower varistor layer, the electrode pattern, the first terminal pattern, the second terminal pattern, the third terminal pattern, and the fourth terminal pattern.

The protective layer is formed with a plurality of connecting grooves through which a plurality of lead wires connecting the first terminal pattern, the second terminal pattern, the third terminal pattern, and the fourth terminal pattern to the AC line pass.

Varistor module for AC line protection according to the present invention consists of a single module to protect a plurality of AC lines, the application area for the application of varistors compared to the prior art using the same number of disk varistors and the number of AC lines and The effect is to minimize circuit complexity.

Incidentally, the varistor module for alternating current line protection has the effect of miniaturizing the equipment using the varistor for protecting the alternating current line by minimizing the application area and circuit complexity for the varistor application.

1 to 4 are diagrams for explaining a conventional varistor used for alternating current line protection.
5 and 6 are views for explaining an AC line protection varistor module according to a first embodiment of the present invention.
7 and 8 are views for explaining an AC line protection varistor module according to a second embodiment of the present invention.
9 to 11 are views for explaining an AC line protection varistor module according to a third embodiment of the present invention.
12 is a view for explaining the AC line connection of the AC line protection varistor module according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the technical idea of the present invention. . In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.

Hereinafter, an AC line protection varistor module according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings. 5 and 6 are views for explaining the varistor module for protecting the AC line according to the first embodiment of the present invention.

As shown in FIG. 5, the varistor module 100 for alternating current line may include an upper varistor layer 110, a lower varistor layer 120, an electrode pattern 130, a plurality of upper terminal patterns 140 and 150, and a plurality of varistor modules 100. The lower terminal patterns 160 and 170 are included.

The upper varistor layer 110 has a plurality of upper varistors formed therein. Here, one end of the plurality of upper varistors is electrically connected to the electrode pattern 130 and the other end is electrically connected to any one of the plurality of upper terminal patterns 140 and 150. In this case, the plurality of upper varistors are connected one-to-one with the plurality of upper terminal patterns 140 and 150.

The lower varistor layer 120 has a plurality of lower varistors formed therein. Here, one end of the plurality of lower varistors is electrically connected to the electrode pattern 130 and the other end is electrically connected to any one of the plurality of lower terminal patterns 160 and 170. In this case, the plurality of lower varistors are connected one-to-one with the plurality of lower terminal patterns 160 and 170.

Here, the number of the sum of the number of upper varistors and the number of lower varistors is the same number as the number of alternating current lines 10 to be protected. For example, when connected to the four-phase AC line 10 is formed so that the total number of the upper varistor and the number of the lower varistors is four. That is, three upper varistors and one lower varistor are formed, two upper varistors and two lower varistors, or one upper varistor and three lower varistors.

The electrode pattern 130 is formed between the upper varistor layer 110 and the lower varistor layer 120. At this time, one surface of the electrode pattern 130 is electrically connected to the plurality of upper varistors, the other surface is electrically connected to the plurality of lower varistors.

The plurality of upper terminal patterns 140 and 150 are formed on the upper surface of the upper varistor layer 110, and are electrically connected to the plurality of upper varistors, respectively. In this case, the plurality of upper terminal patterns 140 and 150 may be formed on the upper surface of the upper varistor layer 110 at predetermined intervals from each other. Here, the plurality of upper terminal patterns 140 and 150 are connected one-to-one to the plurality of alternating current lines 10 to be protected. Of course, the plurality of upper terminal patterns 140 and 150 are connected to the plurality of AC lines 10 to be protected one by one through the plurality of lead wires 200.

The plurality of lower terminal patterns 160 and 170 are formed on the lower surface of the lower varistor layer 120, and are electrically connected to the plurality of lower varistors, respectively. In this case, the plurality of lower terminal patterns 160 and 170 are connected one-to-one to the plurality of alternating current lines 10 to be protected. Here, the plurality of lower terminal patterns 160 and 170 are connected to the plurality of AC lines 10 to be protected one by one through the plurality of lead wires 200.

Here, the sum of the number of upper terminal patterns 140 and 150 and the number of lower terminal patterns 160 and 170 is the same number as the number of AC lines 10 to be protected. For example, when connected to the four-phase AC line 10 is formed so that the total number of the upper terminal pattern and the number of the lower terminal pattern is four. That is, three upper terminal patterns and one lower terminal pattern are formed, two upper terminal patterns and two lower terminal patterns, or one upper terminal pattern and three lower terminal patterns.

An example in which an AC line protection varistor module 100 according to a first embodiment of the present invention is used to protect a four-phase AC line 10 will be described below.

As shown in FIG. 6, a first upper varistor 112 and a second upper varistor 114 are formed inside the upper varistor layer 110, and a first lower varistor 120 is formed inside the lower varistor layer 120. 122) and a second lower varistor 124 are formed.

Between the lower surface of the upper varistor layer 110 and the upper surface of the lower varistor layer 120, the first upper varistor 112, the second upper varistor 114, the first lower varistor 122, the second lower varistor 124 The electrode pattern 130 is electrically connected with.

An upper surface of the upper varistor layer 110 may include a first upper terminal pattern 140 electrically connected to the first upper varistor 112, and a second upper terminal pattern 150 electrically connected to the second upper varistor 114. ) Is formed. Here, the first upper terminal pattern 140 and the second upper terminal pattern 150 are formed to be spaced apart from each other by a predetermined interval. In this case, the first upper terminal pattern 140 is electrically connected to the R-phase AC line 10a, and the second upper terminal pattern 150 is electrically connected to the S-phase AC line 10b. That is, the first upper terminal pattern 140 and the second upper terminal pattern 150 are electrically connected to the R-phase AC line 10a and the S-phase AC line 10b through the lead wire 200, respectively.

Accordingly, one end of the first upper varistor 112 is electrically connected to the electrode pattern 130, the other end is electrically connected to the first upper terminal pattern 140, and one end of the second upper varistor 114 is The electrode pattern 130 is electrically connected, and the other end thereof is electrically connected to the second upper terminal pattern 150.

On the lower surface of the lower varistor layer 120, a first lower terminal pattern 160 electrically connected to the first lower varistor 122, and a second lower terminal pattern 170 electrically connected to the second lower varistor 124. ) Is formed. Here, the first lower terminal pattern 160 and the second lower terminal pattern 170 are formed to be spaced apart from each other by a predetermined interval. In this case, the first lower terminal pattern 160 is electrically connected to the T-phase AC line 10c, and the second lower terminal pattern 170 is electrically connected to the S-phase AC line 10b. That is, the second lower terminal pattern 170 and the second lower terminal pattern 170 are electrically connected to the T-phase AC line 10c and the N-phase AC line 10d through the lead wire 200, respectively.

Accordingly, one end of the first lower varistor 122 is electrically connected to the electrode pattern 130, and the other end thereof is electrically connected to the second lower terminal pattern 170. One end of the second lower varistor 124 is electrically connected to the electrode pattern 130, and the other end thereof is electrically connected to the second lower terminal pattern 170.

Hereinafter, the AC line protection varistor module according to a second embodiment of the present invention will be described in detail with reference to the accompanying drawings. 7 and 8 are views for explaining an AC line protection varistor module according to a second embodiment of the present invention.

As shown in FIG. 7, in the AC line protection varistor module 300 according to the second embodiment of the present invention, a protective layer 360 is further provided between the upper varistor layer 313 and the lower varistor layer 317. What is formed is a difference from the first embodiment. That is, there is a difference in forming the upper varistor layer 313, the lower varistor layer 317, and the electrode pattern 317 as one body 310 by additionally forming the protective layer 360. To this end, the AC line protection varistor module 300 includes an upper varistor layer 313, a lower varistor layer 317, an electrode pattern 317, a plurality of upper terminal patterns 320 and 330, and a plurality of lower terminal patterns 340. , 350), and a protective layer 360.

The upper varistor layer 313 has a plurality of upper varistors formed therein. Here, one end of the plurality of upper varistors is electrically connected to the electrode pattern 317 and the other end is electrically connected to any one of the plurality of upper terminal patterns 320 and 330. In this case, the plurality of upper varistors are connected one-to-one with the plurality of upper terminal patterns 320 and 330.

The lower varistor layer 317 has a plurality of lower varistors formed therein. Here, one end of the plurality of lower varistors is electrically connected to the electrode pattern 317 and the other end is electrically connected to any one of the plurality of lower terminal patterns 340 and 350. In this case, the plurality of lower varistors are connected one-to-one with the plurality of lower terminal patterns 340 and 350.

Here, the number of the sum of the number of upper varistors and the number of lower varistors is the same number as the number of alternating current lines to be protected. For example, when connected to a four-phase alternating current line, the sum of the number of upper varistors and the number of lower varistors is formed to be four. That is, three upper varistors and one lower varistor are formed, two upper varistors and two lower varistors, or one upper varistor and three lower varistors.

The electrode pattern 317 is formed between the upper varistor layer 313 and the lower varistor layer 317. At this time, one surface of the electrode pattern 317 is electrically connected to the plurality of upper varistors, the other surface is electrically connected to the plurality of lower varistors.

The plurality of upper terminal patterns 320 and 330 are formed on the upper surface of the upper varistor layer 313, and are electrically connected to the plurality of upper varistors, respectively. In this case, the plurality of upper terminal patterns 320 and 330 are formed on the upper surface of the upper varistor layer 313 at predetermined intervals from each other. Here, the plurality of upper terminal patterns 320 and 330 are connected one-to-one to a plurality of alternating current lines to be protected. Of course, the plurality of upper terminal patterns 320 and 330 may be connected to the plurality of AC lines to be protected one by one through the plurality of lead wires 200.

The plurality of lower terminal patterns 340 and 350 are formed on the lower surface of the lower varistor layer 317, and are electrically connected to the plurality of lower varistors, respectively. In this case, the plurality of lower terminal patterns 340 and 350 are connected one-to-one to a plurality of AC lines to be protected. Here, the plurality of lower terminal patterns 340 and 350 are connected one-to-one to the plurality of alternating current lines to be protected through the plurality of lead wires 200.

Here, the sum of the number of the upper terminal patterns 320 and 330 and the number of the lower terminal patterns 340 and 350 is the same as the number of AC lines to be protected. For example, when connected to a four-phase AC line is formed so that the total number of the upper terminal pattern and the number of the lower terminal pattern is added to four. That is, three upper terminal patterns and one lower terminal pattern are formed, two upper terminal patterns and two lower terminal patterns, or one upper terminal pattern and three lower terminal patterns.

The protective layer 360 is formed to cover the electrode pattern 317 formed between the upper varistor layer 313 and the lower varistor layer 317. That is, as shown in FIG. 8, the protective layer 360 is formed on the lower surface of the upper varistor layer 313 and the upper surface of the lower varistor layer 317 so that the other parts and the electrode pattern 317 disposed inside the equipment are formed. To prevent electrical connection. Of course, the protective layer 360 may be formed to cover all of the upper varistor layer 313, the lower varistor layer 317, and the electrode pattern 317. In this case, the upper electrode pattern 317 and the lower electrode pattern 317 are exposed to the outside for connection with the AC line.

Hereinafter, the AC line protection varistor module according to a third embodiment of the present invention will be described in detail with reference to the accompanying drawings. 9 to 11 are diagrams for explaining an AC line protection varistor module according to a third embodiment of the present invention. First, since the upper varistor layer, the lower varistor layer, the electrode pattern, the upper terminal pattern, and the lower terminal pattern are the same as in the above-described first and second embodiments, a detailed description thereof will be omitted.

As shown in FIG. 9, in the AC line protection varistor module 400 according to the third embodiment of the present invention, a protective layer 480 is formed on the outer circumferential surfaces of the upper varistor layer 410 and the lower varistor layer 420. The chip-shaped module is different from the first and second embodiments. That is, as shown in Figure 10, the AC line protection varistor module 400, the protective layer 480 is formed on the upper and lower surfaces of the upper varistor layer 410, the upper and lower surfaces of the lower varistor layer 420, Side portions of the upper varistor layer 410 and the lower varistor layer 420 are formed to be exposed to the outside to form a single chip module. Of course, as shown in FIG. 11, the AC line protection varistor module 400 includes an upper varistor layer 410, an electrode pattern 430, a lower varistor layer 420, an upper terminal pattern 440 and 450, and a lower terminal. The protective layer 480 may be formed to cover all of the outer circumferential surface of the device to which the patterns 460 and 470 are coupled to form a single chip module.

In this case, the protective layer 480 formed on the lower surfaces of the upper varistor layer 410 and the lower varistor layer 420 may include a plurality of upper terminal patterns 440 and 450 and a plurality of lower terminal patterns 460 and 470. A plurality of connection grooves 490 through which the lead wires 200 installed to connect with the (10) and (10) passes are formed.

In the case of installing the four-phase AC line 10 (that is, FIG. 9), for example, the first varistor layer 410 electrically connects the first upper terminal pattern 440 and the R-phase AC line 10a. The first connecting groove 490a through which the first lead wire 200a to connect passes, and the second lead wire 200b electrically connecting the second upper terminal pattern 450 and the S-phase AC line 10b to each other. The second connection groove 490b is formed. In the lower varistor layer 420, a third connecting groove 490c and a second lower terminal through which a third lead wire 200c electrically connecting the first lower terminal pattern 460 and the T-phase AC line 10c passes. A fourth connecting groove 490d through which the fourth lead line 200d electrically connecting the pattern 470 and the N-phase AC line 10d is formed. In this case, the lead wire 200 may be connected to the terminal pattern by soldering or a connector.

Hereinafter, the AC line connection of the AC line protection varistor module according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. 12 is a view illustrating an AC line connection of an AC line protection varistor module according to an embodiment of the present invention.

FIG. 12A is a diagram illustrating a conventional disk varistor 20 connected to a four-phase AC line 10 to protect the AC line 10. Conventionally, in order to protect the four-phase AC line 10, the first disk varistor 20a, the second disk varistor 20b, the third disk varistor 20c, and the fourth disk varistor 20d are connected to the R phase AC line ( 10a), the S-phase AC line 10b, the T-phase AC line 10c, and the N-phase AC line 10d. That is, the first disk varistor 20a has one side connected to the R phase AC line 10a and the other side connected to the S phase AC line 10b to the R phase AC line 10a and the S phase AC line 10b. The surge voltage formed is absorbed to prevent breakage of the R-phase AC line 10a and the S-phase AC line 10b. The second disk varistor 20b has one side connected to the R phase AC line 10a and the other side connected to the T phase AC line 10c and formed on the R phase AC line 10a and the T phase AC line 10c. The surge voltage is absorbed to prevent breakage of the R-phase AC line 10a and the T-phase AC line 10c. The third disk varistor 20c has one side connected to the R-phase AC line 10a and the other side connected to the N-phase AC line 10d and formed on the R-phase AC line 10a and the N-phase AC line 10d. The surge voltage is absorbed to prevent breakage of the R-phase AC line 10a and the N-phase AC line 10d. The fourth disk varistor 20d has one side connected to the S-phase AC line 10b and the other side connected to the T-phase AC line 10c to be formed in the S-phase AC line 10b and the T-phase AC line 10c. The surge voltage is absorbed to prevent breakage of the S-phase AC line 10b and the T-phase AC line 10c. The fifth disk varistor 20e has one side connected to the S-phase AC line 10b and the other side connected to the N-phase AC line 10d to be formed on the S-phase AC line 10b and the N-phase AC line 10d. The surge voltage is absorbed to prevent breakage of the S-phase AC line 10b and the N-phase AC line 10d. The sixth disk varistor 20f has one side connected to the T phase AC line 10c and the other side connected to the N phase AC line 10d and formed on the T phase AC line 10c and the N phase AC line 10d. The surge voltage is absorbed to prevent breakage of the T-phase AC line 10c and the N-phase AC line 10d.

12 (b) is a view connecting the varistor module (100, 300, 400) for alternating current line protection according to the first to third embodiments of the present invention with the four-phase alternating current line (10). In the present invention, the upper terminal patterns (440, 450) and the varistor module (100, 300, 400) for alternating current line protection according to the first to third embodiments of the present invention in order to protect the four-phase AC line 10 and The lower terminal patterns 460 and 470 are electrically connected to the four-phase AC line 10 using the lead wires 200. That is, one side of the first lead wire 200a is soldered and electrically connected to the first upper terminal pattern 440, and the other side of the first lead wire 200a is electrically connected to the R-phase AC line 10a by soldering. Connect. One side of the second lead wire 200b is soldered and electrically connected to the second upper terminal pattern 450, and the other side of the second lead wire 200b is electrically connected to the S-phase AC line 10b by soldering. . One side of the third lead wire 200c is soldered and electrically connected to the first lower terminal pattern 460, and the other side of the third lead wire 200c is electrically connected to the T-phase AC line 10c by soldering. . One side of the fourth lead wire 200d is soldered and electrically connected to the second lower terminal pattern 470, and the other side of the fourth lead wire 200d is electrically connected to the N-phase AC line 10d by soldering. .

At this time, the AC line protection varistor module (100, 300, 400) according to the first to third embodiments of the present invention when connected to the four-phase AC line 10 operates as follows.

The first upper terminal pattern 440 and the second upper terminal pattern 450, the first upper varistor 412, the second upper varistor 414, and the electrode pattern 430 are electrically connected, and the first upper terminal pattern 440 and the second upper terminal pattern 450 absorb the surge voltages formed in the R-phase AC line 10a and the S-phase AC line 10b of the four-phase AC line 10 to form an R-phase AC line ( The breakage of 10a) and the S phase alternating current line 10b is prevented. That is, the same function as the above-described conventional first disk varistor 20a is performed.

The first upper terminal pattern 440 and the first lower terminal pattern 460, the first upper varistor 412, the first lower varistor 422, and the electrode pattern 430 are electrically connected, and the first upper terminal pattern 440 and the first lower terminal pattern 460 absorb the surge voltages formed in the R-phase AC line 10a and the T-phase AC line 10c of the four-phase AC line 10 to form an R-phase AC line ( 10a) and the T-phase AC line 10c are prevented from being damaged. That is, the same function as the conventional second disk varistor 20b described above is performed.

The first upper terminal pattern 440 and the second lower terminal pattern 470, the first upper varistor 412, the second lower varistor 424, and the electrode pattern 430 are electrically connected, and the first upper terminal pattern 440 and the second lower terminal pattern 470 absorb the surge voltages formed in the R-phase AC line 10a and the N-phase AC line 10d of the four-phase AC line 10 to form an R-phase AC line ( 10a) and breakage of the N-phase AC line 10d are prevented. That is, the same function as the above-described conventional third disk varistor 20c is performed.

The second upper terminal pattern 450 and the first lower terminal pattern 460, the second upper varistor 414, the first lower varistor 422, and the electrode pattern 430 are electrically connected, and the second upper terminal pattern The S-phase AC line absorbs the surge voltages formed in the S-phase AC line 10b and the T-phase AC line 10c of the 4-phase AC line 10 through the 450 and the first lower terminal pattern 460. 10b) and the T phase AC line 10c are prevented from being damaged. That is, the same function as that of the conventional fourth disk varistor 20d described above is performed.

The second upper terminal pattern 450 and the second lower terminal pattern 470, the second upper varistor 414, the second lower varistor 424, and the electrode pattern 430 are electrically connected, and the second upper terminal pattern The S-phase AC line absorbs the surge voltages formed at the S-phase AC line 10b and the N-phase AC line 10d of the 4-phase AC line 10 through the 450 and the second lower terminal pattern 470. 10b) and breakage of the N-phase AC line 10d are prevented. That is, the same function as the above-described conventional fifth disk varistor 20e is performed.

The first lower terminal pattern 460 and the second lower terminal pattern 470, the first lower varistor 422, the second lower varistor 424, and the electrode pattern 430 are electrically connected, and the first lower terminal pattern 460 and the second lower terminal pattern 470 absorb the surge voltages formed in the T-phase AC line 10c and the N-phase AC line 10d of the four-phase AC line 10 to form a T-phase AC line ( 10c) and breakage of the N-phase AC line 10d are prevented. That is, the same function as the conventional sixth disk varistor 20f described above is performed.

As described above, in the case of using the disk varistor to protect the AC line, as the number of disk varistors installed increases depending on the number of AC lines to be protected, the application area of the disk varistor increases, and the circuit is complicated. There is an unsuitable problem in miniaturizing the device.

On the other hand, in the case of using the AC line protection varistor module according to the embodiment of the present invention to protect the AC line, since it is composed of one module to protect a plurality of AC lines, the varistor compared to the prior art using a disk varistor. The application area and circuit complexity for the application can be minimized, and the equipment using the varistor for the protection of the AC line can be miniaturized.

In this embodiment, the first terminal pattern (or the first upper terminal pattern) is electrically connected to the R phase of the AC line, and the second terminal pattern (or the second upper terminal pattern) is electrically connected to the S phase of the AC line. The third terminal pattern (or the first lower terminal pattern) is electrically connected to the T phase of the AC line, and the fourth terminal pattern (or the second lower terminal pattern) is electrically connected to the N phase of the AC line. Although shown as being connected to, but not limited thereto, each terminal pattern may be electrically connected to an AC line of another phase.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the present invention. It will be understood that the invention may be practiced.

10: AC line 10a: R phase AC line
10b: S phase AC line 10c: T phase AC line
10d: N phase alternating line 20: disk varistor
100, 300, 400: varistor module for alternating line protection
110, 313, 410: upper varistor layer
112, 311, and 412: first upper varistor
114, 312, 414: Second upper varistor
120, 317, 420: lower varistor layer
122, 314, 422: first lower varistor
124, 315, and 424: second lower varistors
130, 317, 430: electrode pattern
140, 320, and 440: first upper terminal pattern
150, 330, 450: second upper terminal pattern
160, 340, 460: first lower terminal pattern
170, 350, and 470: second lower terminal pattern
200: lead wire 310: body
360, 480: protective layer 410: connection groove

Claims (21)

An upper varistor layer having a plurality of upper varistors formed therein;
A lower varistor layer having a plurality of lower varistors formed therein;
An electrode pattern formed between the upper varistor layer and the lower varistor layer, one surface of which is electrically connected to the plurality of upper varistors, and the other surface of which is electrically connected to the plurality of lower varistors;
A plurality of upper terminal patterns formed on an upper surface of the upper varistor layer and electrically connected to the plurality of upper varistors, respectively; And
A plurality of lower terminal patterns formed on a lower surface of the lower varistor layer and electrically connected to the plurality of lower varistors,
And the plurality of upper terminal patterns and the plurality of lower terminal patterns are connected one to one to a plurality of alternating current lines to be protected. The method according to claim 1,
The sum of the number of the upper varistor and the number of the lower varistor is a varistor module for alternating current line protection, characterized in that the same number as the number of the alternating current line to be protected. The method according to claim 1,
The plurality of upper varistors, one end is electrically connected to the electrode pattern and the other end is electrically connected to any one of the plurality of upper terminal patterns,
The plurality of lower varistors, AC line protection varistor module, characterized in that one end is electrically connected to the electrode pattern and the other end is electrically connected to any one of the plurality of lower terminal patterns. The method according to claim 3,
And the plurality of upper varistors are connected in one-to-one connection with the plurality of upper terminal patterns, and the plurality of lower varistors are in one-to-one connection with the plurality of lower terminal patterns. The method according to claim 1,
The sum of the number of the upper terminal pattern and the number of the lower terminal pattern, the varistor module for AC line protection, characterized in that formed in the same number as the number of the AC line to be protected. delete The method according to claim 1,
And the plurality of upper terminal patterns and the plurality of lower terminal patterns are connected one-to-one to a plurality of AC lines to be protected through a plurality of lead wires. The method according to claim 1,
And a protective layer formed to cover the electrode pattern between the lower surface of the upper varistor layer and the upper surface of the lower varistor layer. The method according to claim 1,
A first protective layer formed on an upper surface of the lower varistor layer to cover the plurality of upper terminal patterns; And
And a second protective layer formed on a lower surface of the lower varistor layer to cover the plurality of lower terminal patterns. The method according to claim 9,
The first protective layer and the second protective layer is a varistor module for the AC line protection, characterized in that the connection grooves through which the lead wires connecting the upper terminal pattern and the lower terminal pattern and the AC line to be protected is formed. The method according to claim 1,
And a protective layer formed to cover the upper varistor layer, the lower varistor layer, the electrode pattern, the plurality of upper terminal patterns, and the plurality of lower terminal patterns. The method of claim 11,
The protective layer varistor module for the AC line protection, characterized in that a plurality of connecting grooves through which the lead wire for connecting the upper terminal pattern and the lower terminal pattern and the AC line to be protected is formed. An upper varistor layer having a first varistor and a second varistor formed therein;
A lower varistor layer having a third varistor and a fourth varistor formed therein;
An electrode pattern formed between the upper varistor layer and the lower varistor layer and electrically connected to the first varistor, the second varistor, the third varistor, and the fourth varistor; And
A first terminal pattern formed on an upper surface of the upper varistor and electrically connected to the first varistor;
A second terminal pattern formed on an upper surface of the upper varistor and spaced apart from the first terminal pattern and electrically connected to the second varistor;
A third terminal pattern formed on a lower surface of the lower varistor and electrically connected to the third varistor; And
A fourth terminal pattern formed on the lower surface of the lower varistor and spaced apart from the third terminal pattern and electrically connected to the fourth varistor,
One end of the first varistor is electrically connected to the electrode pattern, and the other end is electrically connected to the first terminal pattern.
One end of the second varistor is electrically connected to the electrode pattern, and the other end is electrically connected to the second terminal pattern.
One end of the third varistor is electrically connected to the electrode pattern, and the other end is electrically connected to the third terminal pattern.
One end of the fourth varistor is electrically connected to the electrode pattern, and the other end is electrically connected to the fourth terminal pattern. delete The method according to claim 13,
The first terminal pattern is electrically connected to the R phase of the AC line, the second terminal pattern is electrically connected to the S phase of the AC line, and the third terminal pattern is electrically connected to the T phase of the AC line. And the fourth terminal pattern is electrically connected to the N phase of the AC line. The method according to claim 15,
And the first terminal pattern, the second terminal pattern, the third terminal pattern, and the fourth terminal pattern are electrically connected to an AC line through a lead line. The method according to claim 13,
And a protective layer formed to cover the electrode pattern between the upper varistor layer and the lower varistor layer. The method according to claim 13,
A first protective layer formed on an upper surface of the upper varistor layer to cover the first terminal pattern and the second terminal pattern; And
And a second protective layer formed on the bottom surface of the lower varistor layer to cover the third terminal pattern and the fourth terminal pattern. 19. The method of claim 18,
A plurality of connection grooves are formed in the first protective layer and the second protective layer through a plurality of lead wires connecting the first terminal pattern, the second terminal pattern, the third terminal pattern, and the fourth terminal pattern to an AC line. Varistor module for AC line protection, characterized in that. The method according to claim 13,
And a protective layer formed to cover all of the upper varistor layer, the lower varistor layer, the electrode pattern, the first terminal pattern, the second terminal pattern, the third terminal pattern, and the fourth terminal pattern. Varistor module for protection of AC line. The method of claim 20,
The protective layer is formed with a plurality of connecting grooves through which a plurality of lead wires connecting the first terminal pattern, the second terminal pattern, the third terminal pattern, and the fourth terminal pattern to an alternating current line are formed; Protective varistor module.

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