KR102432054B1 - Power conditioning system - Google Patents

Abstract

The present invention relates to a power conversion device, which comprises: an input unit which receives first power from the outside; a power conversion unit which is connected to the input unit, includes a plurality of switching elements and a lower board on which the switching elements are mounted, and converts the first power into second power; an output unit which is connected to the power conversion unit, and outputs the second power converted by the power conversion unit; a control unit which includes a processor generating signals for controlling the operation of the plurality of switching elements, and an upper board on which the processor is mounted; and a plurality of conductor supports which individually have a lower end coupled to the lower board, and an upper end coupled to the upper board to form a gap between the lower board and the upper board. According to the power conversion device of the present invention, the distance between the switching element and the upper board can be shortened by arranging the upper board of the control unit to overlap the upper side of the lower board of the power conversion unit, thereby preventing signal delay.

Description

Power converter {POWER CONDITIONING SYSTEM}

The present invention relates to a power conversion device, and more particularly, to a power conversion device capable of implementing optimal performance by efficiently arranging a switching element and a control unit.

Recently, for the reliability of data, the power of the server is important. To this end, a light-weight and miniaturized power conversion device with integration with the server is required.

For miniaturization and high efficiency of the power converter, it is necessary to optimize the arrangement structure of the switching element and the control unit. The conventional power conversion device has a problem in that a signal delay occurs because the circuit board of the control unit for generating a signal for controlling the switching element is disposed on the side of the case and the distance from the switching element is long. In addition, since the circuit board of the control unit occupies a certain portion of the inner space of the case, the space for arranging other components is reduced, and there is a problem in that the manufacturing difficulty increases and the material cost increases.

The matters described in the background art above are intended to help the understanding of the background of the invention, and may include matters that are not disclosed 　 prior art.

Registered Patent Publication No. 10-1918062 (Registered on November 7, 2018)

The present invention was invented to improve the above problems, and the problem to be solved by the present invention is that the upper board of the control unit is spaced apart from the upper board of the power conversion unit with a plurality of conductor supports interposed therebetween. It is to provide a power conversion device that has excellent efficiency and can realize optimal performance.

The technical problem of the present invention is not limited to those mentioned above, and another technical problem not mentioned will be clearly understood by those skilled in the art from the following description.

A power conversion device according to an embodiment of the present invention for achieving the above object includes an input unit for receiving first power from the outside, and a lower board connected to the input unit, on which a plurality of switching elements and switching elements are mounted, , a power conversion unit for converting the first power into the second power, an output unit connected to the power conversion unit, and outputting the second power converted by the power conversion unit, and a signal for controlling the operation of the plurality of switching elements a control unit including a processor and an upper board on which the processor is mounted; and a plurality of conductor supports having a lower end coupled to the lower board, and an upper end coupled to the upper board to form a gap between the lower board and the upper board, The board may be disposed to be spaced apart from each other at a predetermined distance on the lower board by a plurality of conductor supports.

The power converter may convert first power that is an AC voltage into second power that is a DC voltage, or convert the first power that is a DC voltage into second power that is an AC voltage. In addition, the power converter may convert the first power, which is an AC or DC voltage, into second power having a different voltage level.

The lower board may include a first board and a second board, and a connector for horizontally connecting the first board and the second board, and the first board and the second board may have upper surfaces of the first board and the second board disposed on the same plane. .

The upper board is disposed between an upper ground region having an upper ground potential, an upper circuit region to which the operating power of the processor is transmitted, and the upper ground region and the upper circuit region, and electrically separating the upper ground region and the upper circuit region. It may include an insulating region.

Here, the upper ground region may have a band shape that at least partially surrounds the upper circuit region.

At least one upper through electrode connected to the upper ground region may be formed in the upper ground region, and the upper through electrode may be electrically connected to a lower ground region having a lower ground potential formed on the lower board through an upper fastening means.

On the other hand, the power conversion unit includes a first converter that converts the first power that is an AC voltage into third power that is a DC voltage, and a second converter that converts the third power into a second power that is an AC voltage, the first converter Further comprising a battery unit connected to the third power is stored, the second converter may convert the third power stored in the battery unit into the second power.

On the other hand, the power conversion device according to the embodiment of the present invention is connected to the input unit and the control unit, further comprising a power sensing unit for detecting the inflow of the first power, if the detection signal of the power sensing unit does not generate, the control unit is the battery unit The stored third power may be controlled to be output as it is, or a control signal may be sent to the second converter to be converted into second power and output.

On the other hand, the power conversion device according to an embodiment of the present invention may further include a signal transmission line coupled to the lower end to the lower board, the upper end to the upper board, the signal is transmitted between the power conversion unit and the control unit.

According to the power conversion device of the present invention, it is possible to shorten the distance between the switching element and the upper board by arranging the upper board of the control unit to overlap the upper side of the lower board of the power conversion unit, thereby preventing signal delay.

In addition, according to the power conversion device of the present invention, the upper ground area in the upper board of the control unit is formed in the form of a band at least partially surrounding the upper circuit area, so that the upper ground area can protect the upper circuit area from noise. .

In addition, according to the power conversion device of the present invention, since the first board and the second board of the power conversion unit are connected by a connector so that their respective upper surfaces are disposed on the same plane, the upper board of the control unit is configured to operate through a plurality of conductor supports. When coupled to the first and second boards, the coupling state may be stably maintained.

In addition, according to the power conversion device of the present invention, when the power is cut off or a power outage occurs, the third power stored in the battery unit can be output, so that efficiency can be improved.

1 is a block diagram showing a power conversion device according to a first embodiment of the present invention.
2 is a configuration diagram schematically showing a connection relationship between a control unit and a plurality of switching elements in the power conversion device according to the first embodiment of the present invention.
Figure 3 is a side view showing a portion of the first board and the second board connected to the connector in the power conversion device according to the first embodiment of the present invention.
4 is a plan view showing a power conversion device according to a first embodiment of the present invention.
5 is an exploded perspective view of FIG. 4 ;
6 is a perspective view of FIG. 4 .
7 is a cross-sectional view schematically illustrating an upper and lower ground region, an upper and lower circuit region, and an upper and lower insulating region in the power conversion device according to the first embodiment of the present invention.
8 is a cross-sectional view schematically illustrating a state in which the upper and lower fastening means are fastened in FIG. 7 .
9 is a plan view showing a control unit in the power conversion device according to the first embodiment of the present invention.
10 is a block diagram showing a power conversion device according to a second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The examples are provided to more completely explain the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is limited to the following examples It is not limited. Rather, these examples are provided so that this disclosure will be more thorough and complete, and will fully convey the spirit of the invention.

The terminology used herein is used to describe specific embodiments, not to limit the present invention. Also, in this specification, the singular form may include the plural form unless the context clearly indicates otherwise.

In the description of the embodiment, each layer (film), region, pattern or structure is assumed to be formed “on” or “under” the substrate, each layer (film), region, pad or patterns. Where described, "on" and "under" include both "directly" or "indirectly" formed through another layer. Also, in principle, the standards for above or below each floor are based on the drawings.

The drawings are only for understanding the spirit of the present invention, and should not be construed as limiting the scope of the present invention by the drawings. In addition, the relative thickness, length, or relative size in the drawings may be exaggerated for convenience and clarity of description.

1 is a block diagram showing a power conversion device according to a first embodiment of the present invention, Figure 2 is a schematic diagram showing the connection relationship between the control unit and a plurality of switching elements in the power conversion device according to the first embodiment of the present invention It is a configuration diagram.

1 and 2, the power conversion device 1 of the present invention is a device that converts first power into another type of second power, an input unit 100, a power conversion unit 200, an output unit ( 300) and the control unit 400 may be included.

The input unit 100 may be configured to receive first power from the outside.

The power conversion unit 200 may be connected to the input unit 100 and include a plurality of switching elements 210 and a lower board (reference numeral 220 in FIG. 3 ) on which the switching elements 210 are mounted. The power conversion unit 200 may convert the first power received from the input unit 100 into second power.

The power converter 200 may convert the first power, which is the input power, into a second power of another type according to the switching operation of the plurality of switching elements 210 . That is, the power conversion unit 200 may convert the first power into the second power through the switching element 210 that performs a switching operation according to the control signal transmitted from the control unit 400 . The power converter 200 may convert first power that is an AC voltage into second power that is a DC voltage, or convert first power that is a DC voltage into second power that is an AC voltage. In addition, the power converter 200 may convert the first power, which is an AC or DC voltage, into second power having a different voltage level. The switching element 210 of the power converter 200 may be a transistor such as a Bipolar Junction Transistor (BJT), a Thin Film Transistor (TFT), or an Insulated Gate Bipolar Transistor (IGBT).

The controller 400 may generate a signal for controlling the operation of the plurality of switching elements 210 . The switching signal of the control unit 400 is input to the gate terminal of the switching element 210, and the switching element 210 passes or blocks the current input to the switching element 210 in response to the switching signal to prevent the current passing. A switching operation may be performed. In this process, the switching element 210 generates a lot of heat because it operates at high speed, and since the timing of transmission of the switching signal is important, when the distance between the control unit 400 and the switching element 210 increases, a signal delay occurs. There is a problem. Therefore, in the present invention, the upper board 420 of the control unit 400 is overlapped on the upper side of the lower board 220 of the power conversion unit 200 so as to prevent the delay of the signal, so that the delay of the signal can be prevented. . In addition, as will be described later, in the present invention, the upper ground area 421 of the upper board 420 is formed in the form of a band that at least partially surrounds the upper circuit area 422 so that the upper ground area 421 is formed. It is possible to protect the upper circuit region 422 from noise, thereby reducing noise.

Figure 3 is a side view showing a portion of the first board and the second board connected to the connector in the power conversion device according to the first embodiment of the present invention.

Referring to FIG. 3 , the lower board 220 of the power conversion unit 200 includes a first board 220a and a second board 220b, and the first board 220a and the second board 220b. It may be configured to include a connector 230 for horizontally connecting. Here, any one of the first board 220a and the second board 220b may be a sub board on which input/output terminals, relays, filters, etc. are mounted for input and output, and the other is a plurality of switching for power switching. It may be a main board on which the device and DC link capacitor are mounted. In addition, although not shown in detail, a copper foil pattern for forming a circuit may be pre-printed on the lower board 220 , and a plurality of switching elements 210 may be disposed according to the pre-printed copper foil pattern.

Both ends of the connector 230 may be coupled to each of the first board 220a and the second board 220b by soldering or the like, and the signal of the first board 220a and the signal of the second board 220b may be exchanged. can A plurality of such connectors 230 may be provided to horizontally connect the first and second boards 220b. The connector 230 may have a rectangular shape, but is not limited thereto.

The lower board 220 is used to connect a small size of the first board 220a and the second board 220b to reduce costs, and the conventional lower board 220 includes a portion of the first board 220a and In a state in which some regions of the second board 220b are overlapped, fastening means such as bolts passing through the overlapped regions are fastened and connected. The lower board 220 has a problem in that the upper surface of each of the first board 220a and the second board 220b is not on the same line, and is arranged in a stepped manner, so that the bonding state is not firmly maintained and easily broken. . On the other hand, since the lower board 220 of the present invention includes a connector 230 for horizontally connecting the first board 220a and the second board 220b, the first board 220a and the second board 220b. Each of the upper surfaces may be disposed on the same plane, and when the upper board 420 of the control unit 400 is coupled to the lower board 220 via a plurality of conductor supports 600 to be described later, it is flat rather than inclined. The binding state may be stably maintained. In addition, since the method using the connector 230 of the present invention is more easily connected than the method of connecting using a conventional bus bar or terminal block, the material cost and assembly process can be minimized.

Referring back to FIG. 1 , the output unit 300 may be connected to the power conversion unit 200 , and may be configured to receive and output the second power converted by the power conversion unit 200 . Although not shown, the output unit 300 may include a filter (not shown). Accordingly, the second power may be output in a form in which noise is removed through a filter or the like.

Meanwhile, the communication unit 500 may be connected to the control unit 400 and configured to transmit and receive signals. The communication unit 500 may connect an external computer (not shown) and the control unit 400 to control the control unit 400 from the external computer.

4 is a plan view showing a power conversion device according to a first embodiment of the present invention, FIG. 5 is an exploded perspective view of FIG. 4 , and FIG. 6 is a perspective view of FIG. 4 .

Referring to FIG. 4 , the controller 400 includes a processor 410 that is a digital signal processor (DSP) that generates a signal for controlling power conversion of a plurality of switching elements 210 , the processor 410 and AD/DA conversion It may be configured to include an upper board 420 on which a circuit is mounted. The upper board 420 of the control unit 400 may be disposed at intervals on the upper side of the lower board 220 of the power conversion unit 200 with the plurality of conductor supports 600 interposed therebetween.

Referring to FIG. 5 , the plurality of conductor supports 600 are formed of a metal material, the lower end is coupled to the lower board 220 , and the upper end is coupled to the upper board 420 , so that the lower board 220 and the upper board 420 are coupled to each other. ) to form a gap between them. A first fastening groove 610 may be formed at an upper end of each of the conductor supports 600 , and a second fastening groove 620 may be formed at a lower end thereof. The first fastening groove 610 may be a screw groove fastened to the upper fastening means 430, such as a bolt, and the second fastening groove 620 may be a screw groove fastened to the lower fastening means 240, such as a bolt.

In addition, the power converter 1 may be configured to further include a case 700 to which the lower board 220 is coupled. In FIG. 5 , a part of the case 700 is omitted for convenience, and the case 700 may have a rectangular parallelepiped shape.

As will be described later with reference to FIG. 7 , the case 700 may include a body part 710 and a boss part 720 provided in the body part 710 . A first fastening hole 711 may be formed in the main body 710 , and a second fastening hole 721 communicating with the first fastening hole 711 may be formed in the boss unit 720 . The lower fastening means 240 penetrates the first fastening hole 711 and the second fastening hole 721 of the case 700 and the lower through electrode 250 of the lower board 220 to form the second fastening of the conductor support 600 . 2 may be screwed into the fastening groove 620 . In addition, the upper fastening means 430 may pass through the upper through electrode 440 of the upper board 420 to be screwed into the first fastening groove 610 of the conductor support 600 .

As shown in FIG. 6 , the upper board 420 of the control unit 400 is spaced apart from each other at a predetermined interval on the lower board 220 of the power conversion unit 200 by a plurality of conductor supports 600 . Therefore, it is possible to arrange the elements in the space formed between the upper board 420 and the lower board 220, so the space efficiency is excellent. The height of the space formed between the upper board 420 and the lower board 220 depends on the length of the conductor support 600 , and an element disposed in the space may be an element having a height smaller than the height of the space. A device having a size relatively larger than the height of the space between the upper board 420 and the lower board 220, for example, a capacitor, a coil, etc., is to be disposed in the remaining lower board 220 area where the upper board 420 is not disposed. can

In this way, the power conversion device 1 of the present invention is characterized in that the upper board 420 is disposed on the lower board 220, and the conductor support 600 is disposed with a predetermined interval therebetween. . In the conventional power conversion device 1, since the upper board 420 of the control unit 400 is disposed on the side of the case 700, the distance from the switching element 210 is long, so a signal delay occurs, and the upper board 420 ) and the lower board 220 are connected by a wire, noise is generated in the wire, and there is a problem in reliability. In addition, since the upper board 420 occupies a certain portion of the inner space of the case 700, the space for arranging other components is reduced, and the difficulty of manufacturing increases, thereby increasing the material cost. In order to solve this problem, the present invention arranges the upper board 420 on the upper part of the lower board 220 at intervals to increase the distance between the switching element 210 and the upper board 420 provided in the lower board 220 . It can be shortened, so that delay of the signal can be prevented. In addition, the control unit 400 is connected to the plurality of switching elements 210 and the shortest distance so that the control signal for controlling the switching elements 210 is transmitted in an optimal state, to optimize the performance of the power conversion device (1). can In addition, compared to the method of connecting the upper board 420 and the lower board 220 with a wire, material cost can be saved, and the assembly process is minimized, thereby reducing the cost.

The power conversion device 1 of the present invention may be configured to further include a signal transmission line 800 having a lower end coupled to the lower board 220 and an upper end coupled to the upper board 420 . The signal transmission line 800 may be configured to transmit a signal between the power conversion unit 200 and the control unit 400 . That is, the signal transmission line 800 may serve as a path through which the signal of the power conversion unit 200 is transmitted to the control unit 400 or the signal of the control unit 400 is transmitted to the power conversion unit 200 . A plurality of signal transmission lines 800 may be disposed, but the number is not limited thereto.

7 is a cross-sectional view schematically showing an upper and lower ground region, an upper and lower circuit region, and an upper and lower insulating region in the power conversion device according to the first embodiment of the present invention, and FIG. 8 is a schematic view of the state in which the upper and lower fastening means are fastened in FIG. A cross-sectional view is shown.

7 and 8 , the lower board 220 may include a lower ground region 221 , a lower circuit region 222 , and a lower insulating region 223 .

The lower ground region 221 of the lower board 220 may have a lower ground potential. At least one lower through electrode 250 connected to the lower ground region 221 may be formed in the lower ground region 221 . The lower through electrode 250 has an opening so that the lower fastening means 240 can be fastened, and the lower ground region 221 can be coupled to the case 700 by fastening the lower fastening means 240 . The lower fastening means 240 includes a first fastening hole 711 formed in the main body 710 of the case 700 , a second fastening hole 721 formed in the boss 720 , and a lower portion of the lower ground region 221 . It may be coupled to the second fastening groove 620 formed at the lower end of the conductor support 600 through the through electrode 250 . For example, the lower fastening means 240 may be a bolt, and the second fastening groove 620 of the conductor support 600 may be a screw groove fastened to the lower fastening means 240 . In this way, the lower board 220 and the case 700 of the power conversion unit 200 may be coupled through the lower fastening means 240 , and the lower board 220 is the body part ( 710) and may be spaced apart from each other.

The lower circuit region 222 of the lower board 220 is a portion to which the operating power of the plurality of switching elements 210 is transmitted. In addition, in the lower circuit region 222 , electronic devices and signal lines for supplying power required for the operation of the power converter 200 may be disposed.

The lower insulating region 223 of the lower board 220 may be disposed between the lower ground region 221 and the lower circuit region 222 to electrically separate the lower ground region 221 and the lower circuit region 222 . have. That is, the lower ground region 221 may be separated from the lower circuit region 222 with the lower insulating region 223 interposed therebetween as a portion in communication with the case 700 .

The upper board 420 may include an upper ground region 421 , an upper circuit region 422 , and an upper insulating region 423 .

The upper ground region 421 of the upper board 420 may have an upper ground potential. At least one upper through-electrode 440 connected to the upper ground region 421 may be formed in the upper ground region 421 . The upper through electrode 440 has an opening so that the upper fastening means 430 can be fastened, and the upper ground region 421 can be coupled to the upper end of the conductor support 600 by fastening the upper fastening means 430 . have. The upper fastening means 430 may pass through the upper through electrode 440 of the upper ground region 421 to be coupled to the first fastening groove 610 formed at the upper end of the conductor support 600 . For example, the upper fastening means 430 may be a bolt, and the first fastening groove 610 of the conductor support 600 may be a screw groove fastened to the upper fastening means 430 .

The upper circuit region 422 of the upper board 420 may receive operating power of the processor 410 that generates a control signal. Also, in the upper circuit region 422 , electronic devices and signal lines for supplying power required for the operation of the controller 400 may be disposed.

The upper insulating region 423 of the upper board 420 may be disposed between the upper ground region 421 and the upper circuit region 422 and electrically isolate the upper ground region 421 and the upper circuit region 422 . have. That is, the upper ground region 421 may be physically separated from the upper circuit region 422 by the upper insulating region 423 .

Also, the upper ground region 421 may be electrically connected to the lower ground region 221 having a lower ground potential formed on the lower board 220 through the upper fastening means 430 . That is, in the upper board 420 , the upper ground region 421 communicates with the lower ground region 221 of the lower board 220 through the conductor support 600 coupled by the upper fastening means 430 to a common ground region. can form. In this case, the upper ground potential of the upper ground region 421 and the lower ground potential of the lower ground region 221 may be 0V or may be the ground of the case 700 .

That is, in the power conversion device 1 of the present invention, the upper ground area 421 of the upper board 420 is electrically connected to the lower ground area 221 and the case 700 of the lower board 220 to extend the ground. can be used as Since noise can be shielded through the upper ground region 421 , noise applied to the upper board 420 can be reduced.

On the other hand, in FIGS. 7 and 8 , first and second fastening grooves 610 and 620 that are female threads are formed at the upper and lower ends of the conductor support 600 , and upper and lower fastening means 430 and 240 are formed in the first and second fastening grooves 610 and 620 . Although a fastened example is illustrated, a protruding male screw (not shown) may be formed at at least one end of the conductor support 600 according to embodiments. Here, the male threads of the conductor support 600 may refer to the upper and lower fastening means 430 and 240 described above.

9 is a plan view showing a control unit in the power conversion device according to the first embodiment of the present invention.

As shown in FIG. 9 , the upper ground region 421 of the upper board 420 has a band shape that at least partially surrounds the upper circuit region 422 . Here, the upper ground region 421 may have a shape surrounding the slope of the upper circuit region 422 , or may have a shape surrounding the upper circuit region 422 as a whole.

The operating voltage of the upper board 420 is lower than the operating voltage of the lower board 220 . Specifically, an operating voltage of several tens to hundreds of V is applied to the lower board 220 , and an operating voltage of several V to 10 V is applied to the upper board 420 . That is, the signal of the upper board 420 is vulnerable to noise caused by the high voltage of the lower board 220 . Accordingly, in the power conversion device 1 of the present invention, the upper ground region 421 is formed in a band shape that at least partially surrounds the upper circuit region 422 so that the upper ground region 421 is protected from noise such as external electromagnetic waves. It is possible to protect the upper circuit area 422 .

As such, in the power conversion device 1 of the present invention, as in the prior art, the upper board 420 is not disposed on the side of the case 700 , but is disposed overlappingly with a gap on the upper side of the lower board 220 , so that the switching element By reducing the distance between the 210 , it is possible to prevent signal delay.

In addition, the lower board 220 generates a lot of noise because various electronic elements operate and have a high voltage. Accordingly, when the upper board 420 is disposed to overlap the upper part of the lower board 220 than when the upper board 420 is on the side of the case 700 , the noise caused by the high voltage of the lower board 220 may be more affected. To solve this, the power conversion device 1 of the present invention allows the upper ground region 421 of the upper board 420 to be formed in a band shape at least partially surrounding the upper circuit region 422, so that the upper ground region ( 421 may protect the upper circuit region 422 from noise. As a result, the power conversion device 1 of the present invention has an advantage in that it is possible to reduce the distance between the upper board 420 and the switching element 210 to prevent signal delay while reducing the effect of noise to increase efficiency.

Meanwhile, although not shown, the power conversion device 1 may include a heat dissipation unit (not shown) for dissipating heat of the plurality of switching elements 210 . The heat dissipation unit may be provided as a heat dissipation fan, a heat dissipation plate, or the like, and may be configured to be included in the case 700 . The plurality of switching elements 210 generate a lot of heat because they operate at high speed. Accordingly, the heat dissipation unit may be disposed near the switching element 210 to prevent overheating of the switching element 210 . For example, the heat sink may be disposed on the switching element 210 , and the heat radiation fan may be disposed on the side of the switching element 210 to optimize heat dissipation efficiency.

Hereinafter, with reference to FIG. 10, a power conversion device 1' according to a second embodiment of the present invention will be described. For convenience of description, descriptions of the same components as those of the first embodiment shown in FIGS. 1 to 9 will be omitted, and differences will be mainly described below.

10 is a block diagram showing a power conversion device according to a second embodiment of the present invention.

Referring to FIG. 10 , the power conversion device 1 ′ according to the second embodiment of the present invention may further include a battery unit 900 to operate as an uninterruptible power supply system (UPS). . Although not shown, the power converter 200 may be configured to include a first converter (not shown) and a second converter (not shown). The first converter of the power converter 200 is configured to convert the first power that is an AC voltage into the third power that is a DC voltage, and may be an AC/DC inverter. The second converter of the power converter 200 is configured to convert the third power that is a DC voltage into the second power that is an AC voltage, and may be a DC/AC inverter. The battery unit 900 may be connected to the first converter of the power converter 200 to store the third power converted by the first converter. Here, according to an embodiment, the third power may be converted once more and stored. For example, the third power may be boosted or reduced by a DC/DC converter (not shown) of the power conversion unit 200 and stored in the battery unit 900 . The second converter of the power conversion unit 200 may be connected to the battery unit 900 to convert the third power stored in the battery unit 900 into second power that is an AC voltage.

In addition, the power conversion device 1 ′ according to the second embodiment of the present invention is connected to the input unit 100 and the control unit 400, and further comprises a power sensing unit 1000 for detecting the inflow of the first power can be The power sensing unit 1000 may be configured to detect an inflow of commercial power (eg, first power) flowing into the power conversion device 1 ′. If an abnormal phenomenon such as a power outage, a momentary power failure, or a voltage change occurs, and the power sensing unit 1000 does not generate a detection signal for detecting the inflow of the first power, the control unit 400 controls the third stored in the battery unit 900 . Power can be controlled to be output. Here, the control unit 400 may control the third power stored in the battery unit 900 to be output as it is, or send a control signal to the second converter of the power conversion unit 200 to send the third power stored in the battery unit 900 . 3 It is possible to control the power to be converted into the second power and output. In this case, the third power or the second power may be output through the filter of the output unit 300 .

As such, the power conversion device 1 ′ according to the second embodiment of the present invention can output the third power stored in the battery unit 900 when the power is cut off or a power outage occurs, so that this optimal power flow is achieved. efficiency can be improved.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

1,1': power conversion device 100: input unit
200: power conversion unit 210: a plurality of switching elements
220: lower board 221: lower ground area
222: lower circuit region 223: lower insulating region
220a: first board 220b: second board
230: connector 240: lower fastening means
250: lower through electrode 300: output unit
400: control unit 410: processor
420: upper board 421: upper ground area
422: upper circuit region 423: upper insulating region
430: upper fastening means 440: upper through-electrode
500: communication unit 600: a plurality of conductor support
610: first fastening groove 620: second fastening groove
700: case 710: body part
711: first fastening hole 720: boss part
721: second fastening hole 800: signal transmission line
900: battery unit 1000: power sensing unit

Claims (10)

an input unit receiving first power from the outside;
a power conversion unit connected to the input unit, including a plurality of switching elements and a lower board on which the switching elements are mounted, converting the first power into second power;
an output unit connected to the power conversion unit and outputting second power converted by the power conversion unit;
a controller including a processor for generating a signal for controlling the operation of the plurality of switching elements and an upper board on which the processor is mounted; and
a plurality of conductor supports having a lower end coupled to the lower board and an upper end coupled to the upper board to form a gap between the lower board and the upper board,
The upper board is a power conversion device that is spaced apart from each other at a predetermined distance on the lower board by the plurality of conductor supports. According to claim 1,
The power conversion unit converts first power that is an AC voltage into second power that is a DC voltage, or converts first power that is a DC voltage into second power that is an AC voltage. According to claim 1,
The power conversion unit is a power conversion device for converting the first power, which is an AC or DC voltage, into a second power having a different voltage magnitude. According to claim 1,
The lower board is
a first board and a second board; and
a connector for horizontally connecting the first board and the second board;
The first board and the second board are power converters each having an upper surface disposed on the same plane. According to claim 1,
The upper board is
an upper ground region having an upper ground potential;
an upper circuit region to which operating power of the processor is transmitted; and
and an upper insulating region disposed between the upper ground region and the upper circuit region and electrically separating the upper ground region and the upper circuit region. 6. The method of claim 5,
The upper ground region is in the form of a band at least partially surrounding the upper circuit region. 6. The method of claim 5,
At least one upper through-electrode connected to the upper ground region is formed in the upper ground region;
The upper through electrode is electrically connected to a lower ground region having a lower ground potential formed on the lower board through an upper fastening means,
power converter. According to claim 1,
The power conversion unit,
a first converter for converting first power, which is an AC voltage, into third power, which is a DC voltage; and
a second converter for converting the third power into a second power that is an AC voltage;
Further comprising a battery unit connected to the first converter to store the third power,
The second converter is a power converter for converting the third power stored in the battery unit into the second power. 9. The method of claim 8,
It is connected to the input unit and the control unit, further comprising a power sensing unit for detecting the inflow of the first power,
When the detection signal of the power sensing unit is not generated, the control unit controls so that the third power stored in the battery unit is output as it is, or transmits a control signal to the second converter to convert the power to the second power and control the output. Device. According to claim 1,
The lower end is coupled to the lower board, the upper end is coupled to the upper board, the power conversion device further comprising a signal transmission line through which a signal is transmitted between the power conversion unit and the control unit.

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