CN113366930A

CN113366930A - Inverter device and inverter panel including the same

Info

Publication number: CN113366930A
Application number: CN201980090062.7A
Authority: CN
Inventors: 权赫日; 安宽承
Original assignee: LS Electric Co Ltd
Current assignee: LS Electric Co Ltd
Priority date: 2019-01-25
Filing date: 2019-08-23
Publication date: 2021-09-07
Anticipated expiration: 2039-08-23
Also published as: KR20200092681A; WO2020153560A1; KR102141564B1; CN113366930B

Abstract

The invention discloses an inverter device, an inverter panel accommodating the inverter device, and a power conversion device including the inverter panel. The inverter device of the present invention can flow in and discharge air by using the air blower for supplying a conveying force to the air. Moreover, in the inverter panel, an opening is formed in the position corresponding to the opening for ventilation formed in the inverter device. Therefore, the inverter device accommodated in the inverter panel can be efficiently cooled.

Description

Inverter device and inverter panel including the same

Technical Field

The present invention relates to an inverter device and an inverter panel including the same, and more particularly, to an inverter device capable of independently cooling a plurality of device portions housed in an inverter panel and included in the inverter panel, and an inverter panel including the same.

Background

Typically, a power conversion device receives direct current power and converts it to alternating current power output. This is because the power supply for household use and the power supply for industrial use are mainly ac power.

In this case, the capacity of the power conversion device that can convert power at a time or the capacity of the ac power that can be stored at a time may be named "power conversion capacity".

The power conversion device may be provided in an ESS (Energy Storage System) for use. The power conversion capacity of the power conversion device is an important factor that determines the capacity of the ESS in which the power conversion device is installed.

The power converter includes an inverter and a filter as components. The inverter performs a function of converting the received direct current into alternating current. The filter performs filtering for removing noise of the alternating current converted by the inverter.

Referring to fig. 1, the related art power conversion apparatus includes: a DC panel (DC PNL) receiving direct current; a STACK panel (STACK1 PNL, STACK2 PNL) that converts direct current into alternating current; a FIlteR panel (FIlteR PNL) for filtering the converted alternating current; and an AC panel (AC PNL) for outputting the converted alternating current.

In this power conversion device, the STACK panel (STACK1 PNL, STACK2 PNL) and the FIlteR panel (filterr PNL) are provided in a separate form. That is, there is a limitation that the power conversion device including all the panels as a whole needs to be changed in design in accordance with the power conversion capacity.

Referring to fig. 2, a flow of air for cooling the related art power conversion apparatus is shown. Specifically, the STACK panels (STACK1 PNL, STACK2 PNL) and the FIlteR panel (FIlteR PNL) having the largest heat generation amount radiate heat in an air cooling (air cooling) manner.

At this time, the front or rear of the STACK panel (STACK1 PNL, STACK2 PNL) or the FIlteR panel (filterr PNL) is closed without an opening for inflow and outflow of air. Therefore, air for cooling flows in from the lower side of the STACK panel (STACK1 PNL, STACK2 PNL) and the FIlteR panel (filterr PNL) and is discharged from the upper side ((a) and (b) of fig. 2).

However, this cooling method has problems in that it is difficult to efficiently cool the STACK panels (STACK1 PNL, STACK2 PNL) and the FIlteR panel (filterr PNL), and the remaining heat may damage internal devices.

The problem of the cooling method of the conventional power converter will be described in detail with reference to fig. 3.

First, no device that provides a transfer force for allowing external air to flow into the STACK panels (STACK1 PNL, STACK2 PNL) or discharging air to the outside of the STACK panels (STACK1 PNL, STACK2 PNL) is provided inside the STACK panels (STACK1 PNL, STACK2 PNL).

That is, since air can flow into the stacked panels (STACK1 PNL, STACK2 PNL) only by natural flow, there is a limitation that efficient cooling is difficult.

In addition, there is also a problem caused by inflow of air from the lower side of the STACK panels (STACK1 PNL, STACK2 PNL).

Specifically, the inflowing air passes through the STACK (STACK) having a high heat generation degree and receives heat. However, the Air that has passed through the stack cannot be directly discharged to the outside of the stack panel, but is retained in an Air chamber (Air Room) that is a space formed in the upper portion of the stack.

Therefore, the heat absorbed by the air passing through the STACK is transferred to other devices inside the STACK panel (STACK1 PNL, STACK2 PNL). This may cause damage to other devices provided inside the stacked panel due to an increase in temperature inside the stacked panel (STACK1 PNL, STACK2 PNL).

As a result, there is caused a problem that the power conversion capacity and the operating life of the stacked panels, or even the entire power conversion device, are reduced.

Korean granted patent publication No. 10-0997012 (2010.11.25)

Korean granted patent publication No. 10-1636630 (2016.07.05.)

Disclosure of Invention

Problems to be solved by the invention

An object of the present invention is to provide an inverter device and an inverter panel including the same that can solve the above-described problems.

First, an object of the present invention is to provide an inverter device and an inverter panel that facilitate inflow of air for cooling and outflow of air after heat exchange by providing a transfer force to air flowing into the inverter device or the inverter panel.

Another object of the present invention is to provide an inverter device and an inverter panel that can prevent air after heat exchange from being unnecessarily stagnant by removing unnecessary space inside the inverter panel.

Another object of the present invention is to provide an inverter device and an inverter panel that can adjust the flow amount of air used for cooling according to the degree of heat generation of each component.

Another object of the present invention is to provide an inverter device and an inverter panel that can efficiently cool the inverter device in various places where the power conversion device is installed, that is, under different conditions of indoor or outdoor environments.

Means for solving the problems

In order to achieve the above object, the present invention provides an inverter device including: a first device unit in which an inverter module is provided that converts direct current into alternating current and supplies the alternating current to an external load; a second device unit which is located adjacent to the first device unit and in which a filter for filtering noise (noise) of the alternating current is provided; and a partition dividing the first device part and the second device part; the first device portion includes: a first air intake unit formed at one side of the first device unit, through which air for cooling the inverter module flows into the first device unit; and a first exhaust unit formed at the other side of the first device unit opposite to the one side, through which the air flowed into the first suction unit is exhausted; the second device portion includes: a second air intake unit formed at one side of the second device unit facing the same direction as the first device unit, through which air for cooling the filter flows into the second device unit; and a second exhaust unit formed at the other side of the second device unit opposite to the one side, through which air flowed into the second intake unit is exhausted.

In the inverter device, a first blowing unit that provides a transfer force to the air flowing inside the first device unit may be provided in one or more of the first air intake unit and the first exhaust unit, and a second blowing unit that provides a transfer force to the air flowing inside the second device unit may be provided in one or more of the second air intake unit and the second exhaust unit.

In addition, the inverter device may be formed with a third air intake part formed at the one side of the first device part adjacent to the first air intake part, and air for cooling the inverter module may flow into the first device part through the third air intake part.

In addition, the inverter module may include one or more of a capacitor (capacitor), a heat sink (heatsink), and an IGBT (Insulated Gate Bipolar Transistor).

In addition, the present invention provides an inverter panel including: an inverter device receiving the direct current and converting the direct current into alternating current; and a first inverter housing portion housing the inverter device therein; and a PCB device receiving part positioned at a lower side of the first inverter receiving part, and receiving a PCB device therein; the inverter device includes: a first device unit in which an inverter module is provided that converts direct current into alternating current and supplies the alternating current to an external load; a second device unit which is located adjacent to the first device unit and in which a filter for filtering noise (noise) of the alternating current is provided; and a partition dividing the first device part and the second device part; the first device portion includes: a first air intake unit formed at one side of the first device unit, through which air for cooling the inverter module flows into the first device unit; and a first exhaust unit formed at the other side of the first device unit opposite to the one side, through which the air flowed into the first suction unit is exhausted; the second device portion includes: a second air intake unit formed at one side of the second device unit facing the same direction as the first device unit, through which air for cooling the filter flows into the second device unit; and a second exhaust unit formed at the other side of the second device unit opposite to the one side, through which air flowed into the second intake unit is exhausted; the PCB device is electrically connected with the inverter device to control the inverter device.

In the inverter panel, one or more first panel intake portions through which air flows into the first inverter housing portion may be formed on one side of the first inverter housing portion facing in the same direction as the side of the inverter device on which the first intake portion is formed, and a first panel exhaust portion through which air in the first inverter housing portion is exhausted may be formed on the other side of the first inverter housing portion facing in the same direction as the other side of the inverter device on which the first exhaust portion is formed.

In addition, an external air inflow part through which air flows into the PCB device receiving part may be formed at a lower side of the PCB device receiving part.

In addition, in the inverter panel, a base part positioned at a lower side of the PCB device housing part may be included, a first base suction part through which air for cooling the PCB device flows into the inside of the base part is formed at one side of the base part, an external air supply part through which the air flowing into the inside of the base part is supplied to the PCB device housing part is formed at a side of the base part adjacent to the PCB device housing part, and the external air inflow part of the PCB device housing part and the external air supply part of the base part are aligned with each other.

In addition, an external air exhaust part may be formed at one side of the PCB device receiving part, and external air flowing into the PCB device receiving part is exhausted from the external air exhaust part.

In addition, a panel blowing part may be provided at one or more of the external air inflow part and the external air exhaust part of the PCB device receiving part.

In addition, the present invention provides an inverter panel including: a first inverter housing section housing an inverter device that receives direct current and converts the direct current into alternating current; and a second inverter housing portion located adjacent to the first inverter housing portion; the inverter devices are housed inside the first inverter housing portion and inside the second inverter housing portion, respectively, and include: a first device unit in which an inverter module is provided that converts direct current into alternating current and supplies the alternating current to an external load; a second device unit which is located adjacent to the first device unit and in which a filter for filtering noise (noise) of the alternating current is provided; and a partition dividing the first device part and the second device part; the first device portion includes: a first air intake unit formed at one side of the first device unit, through which air for cooling the inverter module flows into the first device unit; and a first exhaust unit formed at the other side of the first device unit opposite to the one side, through which the air flowed into the first suction unit is exhausted; the second device portion includes: a second air intake unit formed at one side of the second device unit facing the same direction as the first device unit, through which air for cooling the filter flows into the second device unit; and a second exhaust unit formed at the other side of the second device unit opposite to the one side, through which air flowed into the second intake unit is exhausted.

In the inverter panel, a first panel intake portion through which air flows into the first inverter housing portion may be formed on one side of the first inverter housing portion facing in the same direction as the side of the inverter device on which the first intake portion is formed, and a first panel exhaust portion through which air in the first inverter housing portion is exhausted may be formed on the other side of the first inverter housing portion facing in the same direction as the other side of the inverter device on which the first exhaust portion is formed.

In the inverter panel, a second panel intake portion through which air flows into the second inverter housing portion may be formed on one side of the second inverter housing portion facing in the same direction as the side of the inverter device on which the first intake portion is formed, and one or more second panel exhaust portions through which air in the second inverter housing portion is exhausted may be formed on the other side of the second inverter housing portion facing in the same direction as the other side of the inverter device on which the first exhaust portion is formed.

In addition, the present invention provides a power conversion apparatus including the inverter panel described above, which includes a power input panel located adjacent to one side of the inverter panel, receiving the direct current from outside and supplying the direct current to the inverter panel.

In addition, the power conversion apparatus may include a power output panel located adjacent to the other side of the inverter panel, receiving the converted alternating current from the inverter panel and outputting the same to the outside.

Effects of the invention

According to the present invention, the following effects are obtained.

First, a transfer force for causing air to flow into the inverter device can be provided by using the blowing unit provided in the inverter device. Therefore, the inverter device can be cooled efficiently.

In addition, the inverter device is modularized, and the power conversion device is configured in such a manner that the modularized inverter device is inserted into the inverter panel. Therefore, an unnecessary space is not formed in the inverter panel, thereby preventing the air after heat exchange from excessively remaining.

Further, an additional structure for air cooling is provided on the inverter module side having a high heat generation level. Therefore, the flow amount of air can be adjusted according to the degree of heat generation, and the inverter device can be efficiently cooled.

In addition, the inverter panel may change a path of the air inflow according to a setting environment. Therefore, it is possible to minimize the influence of the installation environment and to effectively cool the inverter device.

Drawings

Fig. 1 is a front view of a power conversion device of the related art.

Fig. 2 is a view showing a process in which air flows into the interior of the stacked panels provided in the power conversion apparatus of fig. 1 and is discharged.

Fig. 3 is a diagram illustrating the process of fig. 2 in greater detail.

Fig. 4 is a perspective view of a power conversion device according to an embodiment of the present invention.

Fig. 5 is a front view of the power conversion device of fig. 4.

Fig. 6 is a side view of an inverter panel provided in the power conversion device of fig. 4.

Fig. 7 is a rear view of the power conversion device of fig. 4.

Fig. 8 is a perspective view of an inverter device provided in the power conversion device of fig. 4.

Fig. 9 is a diagram showing an internal configuration of the inverter device of fig. 8.

Fig. 10 is a front view of the inverter device of fig. 8.

Fig. 11 is a side view showing an internal configuration of the inverter device of fig. 8.

Fig. 12 is a rear view of the inverter device of fig. 8.

Fig. 13 is a diagram showing a process in which the inverter device of the embodiment of the present invention is inserted into the inverter panel.

Fig. 14 is a perspective view of a state in which the inverter panels according to the embodiment of the present invention are joined.

Fig. 15 is a front view of fig. 14.

Fig. 16 is a perspective view of an indoor inverter panel according to another embodiment of the present invention.

Fig. 17 is a front view of the indoor inverter panel of fig. 16.

Fig. 18 is a side view showing an internal configuration of the indoor inverter panel of fig. 16.

Fig. 19 is a rear view of the indoor inverter panel of fig. 16.

Fig. 20 is a perspective view of an outdoor inverter panel according to still another embodiment of the present invention.

Fig. 21 is a front view of the outdoor inverter panel of fig. 20.

Fig. 22 is a side view showing an internal configuration of the outdoor inverter panel of fig. 20.

Fig. 23 is a rear view of the outdoor inverter panel of fig. 20.

Fig. 24 is a front view of the power conversion apparatus provided with the line conversion panel according to the embodiment of the present invention.

Fig. 25 is a plan view of the power conversion device of fig. 24.

Fig. 26 is a rear view of the power conversion device of fig. 24.

Fig. 27 is a right side view (a) and a left side view (b) of the power conversion device of fig. 24.

Fig. 28 is a diagram showing a flow process of air inside the inverter device of fig. 8.

Fig. 29 is a diagram showing a flow process of air inside the inverter panel of the embodiment of the present invention.

Fig. 30 is a view illustrating a flow process of air inside the indoor inverter panel of fig. 16 and inside the outdoor inverter panel of fig. 20.

Fig. 31 is a diagram illustrating internal wires provided in a line conversion panel of the power conversion device of fig. 24.

Detailed Description

Hereinafter, an inverter device, an inverter panel, and a power conversion device including the same according to an embodiment of the present invention will be described in detail with reference to the drawings.

The terms "front side", "rear side", "left side", "right side", "upper side" and "rear side" used in the following description can be understood with reference to the coordinate systems shown in fig. 4, 8, 9, 13, 14, 16, 20, 24, 26 and 31.

The singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

1. Description is made of the configuration of the power conversion device 1 according to the embodiment of the present invention

Referring to fig. 4 to 7, the power conversion apparatus 1 of the illustrated embodiment includes an inverter apparatus 10, an inverter panel 500, and a power supply panel 600.

As will be described later, the inverter device 10 according to the embodiment of the present invention is modularized. Specifically, the inverter device 10 includes an inverter module 240 and a filter 340, which will be described later, inside.

Therefore, each inverter device 10 can convert direct current into alternating current and filter the converted alternating current. The power conversion device 1 according to the embodiment of the present invention is configured as the inverter device 10 is coupled to the inverter panels 500 and the respective inverter panels 500 are electrically connected.

Referring to fig. 4 and 5, the components of the power conversion device 1 of the illustrated embodiment are arranged in a row in a direction perpendicular to the front side and the rear side, i.e., the right side and the left side. The arrangement may be varied.

A power input panel 610 and a power output panel 620 are provided at the right and left ends of the power conversion apparatus 1. The power input panel 610 and the power output panel 620 constitute a power panel 600 responsible for input and output of power.

The positions of the power input panel 610 and the power output panel 620 may be changed to other positions capable of transmitting and receiving power to and from the inverter panel 500 and the inverter device 10 accommodated in the inverter panel 500.

A first panel intake portion 511 and a second panel intake portion 521 are provided on the front side surface of the inverter panel 500. As will be described later, the inverter panel 500 according to the embodiment of the present invention has a structure that allows external air to flow in and be discharged. The first panel intake portion 511 and the second panel intake portion 521 function as passages through which external air flows into the inverter panel 500.

Referring to fig. 6, a plurality of inverter devices 10 may be accommodated inside the inverter panel 500 of the illustrated embodiment.

Specifically, the inverter panel 500 includes a first inverter accommodating part 510 formed on an upper side and a second inverter accommodating part 520 formed on a lower side of the first inverter accommodating part 510.

As will be described later, the inverter device 10 may be housed in each of the first inverter housing portion 510 and the second inverter housing portion 520.

A first panel intake portion 511 is formed on a front side surface of the first inverter housing portion 510, and a first panel exhaust portion 512 is formed on a rear side surface thereof.

Further, a second panel intake section 521 is formed on the front side surface of the second inverter housing section 520, and a second panel exhaust section 522 is formed on the rear side surface.

Referring to fig. 7, the power conversion device 1 of the illustrated embodiment includes a first panel exhaust portion 512 and a second panel exhaust portion 522 formed on the rear side surface of the inverter panel 500.

Although not shown, an additional air inlet (not shown) and an air outlet (not shown) for cooling may be formed in the power panel 600.

(1) Description of inverter device 10

The inverter device 10 includes a configuration for converting the transmitted dc power into ac power. Specifically, the inverter device 10 includes an inverter module 240 that performs a function of converting power. The inverter device 10 includes a filter 340 (see fig. 9) for filtering the ac power converted by the inverter module 240.

As described above, the inverter device 10 of the embodiment of the present invention includes the inverter module 240 and the filter 340. That is, the inverter device 10 includes all the components necessary for itself to convert direct current power into alternating current power.

The inverter device 10 has a predetermined power conversion capacity. In addition, in the case where a plurality of inverter devices 10 are provided and connected to be energized with each other, the power conversion capacity can be increased by the number of the inverter devices 10 increased accordingly.

Therefore, the power conversion capacity can be increased only by providing a plurality of inverter devices 10.

Next, the inverter device 10 according to the embodiment of the present invention will be described in detail with reference to fig. 8 to 12.

The inverter device 10 of the illustrated embodiment includes a cover body 100, a first device portion 200, a second device portion 300, and a partition portion 400.

1) Description of the cover 100

The cover 100 forms the outer shape of the inverter device 10. In the illustrated embodiment, the cover 100 has a rectangular parallelepiped shape extending to the front and rear sides, but the shape of the cover 100 may be modified.

As will be described later, the inverter device 10 may be housed in the inverter panel 500. In this case, the plurality of inverter devices 10 may have a shape that can be stably accommodated in the inverter panel 500.

The casing 100 may be formed of an insulative material such as plastic.

A switch (not shown) or the like for controlling the operation of the inverter device 10 may be provided on the front side of the cover 100.

An input terminal part 150a and an output terminal part 150b are provided on one side of the cover 100. In the illustrated embodiment, an input terminal part 150a and an output terminal part 150b are provided on the front upper part of the cover 100.

The input terminal 150a functions as a channel (channel) for transmitting dc power to the inverter device 10. In addition, an electric signal for driving the inverter device 10 and controlling the inverter device 10 may be transmitted to the input terminal portion 150 a.

The output terminal unit 150b functions as a passage for transmitting the ac power converted by the inverter device 10 to the outside. In addition, an electric signal related to the state information of the inverter device 10 and the like may be output from the output terminal section 150 b.

The input terminal 150a and the output terminal 150b are coupled to ports 551, which will be described later. In one embodiment, the later-described port 551 may be inserted into and coupled to the input terminal portion 150a and the output terminal portion 150 b.

The input terminal portion 150a and the output terminal portion 150b of the illustrated embodiment are formed integrally with the cover 100. Alternatively, the input terminal part 150 and the output terminal part 150b may be separately provided and coupled to the cover 100.

The enclosure 100 of the illustrated embodiment is divided into a first device portion 200 and a second device portion 300. Alternatively, the first device portion 200 and the second device portion 300 may also be defined as a space formed inside the cover 100.

However, in the following description, the first device unit 200 and the second device unit 300 are described assuming a three-dimensional structure having an external shape for convenience of description and understanding.

2) Description of the first device portion 200

The first device portion 200 houses the inverter module 240. In the illustrated embodiment, the first device portion 200 is located below a second device portion 300, which will be described later.

This is because the inverter module 240 housed in the first device unit 200 is generally heavier than the filter 340 housed in the second device unit 300, which will be described later.

As the first device portion 200 is located at the lower side of the inverter device 10, the center of gravity moves downward, whereby the inverter device 10 can be stably supported.

The first device portion 200 and a second device portion 300 described later are physically separated by a partition portion 400. The detailed description thereof will be made later.

The first device unit 200 includes a first air intake unit 210a, a first exhaust unit 220a, a first air blowing unit 230a, and an inverter module 240.

The first air-intake portion 210a provides a passage through which outside air can flow into the first device portion 200. The first air-absorbing part 210a may be provided in the form of a through hole (perforation hole).

In the illustrated embodiment, the first air intake portion 210a is formed on the front side of the first device portion 200, but the position thereof may be changed.

The external air flowing in from the first air intake part 210a cools the inverter module 240 housed inside the first device part 200, and is then discharged from the first air discharge part 220 a.

The first exhaust portion 220a is a passage through which the external air flowing into the first device portion 200 can be discharged after exchanging heat with the inverter module 240. The first exhaust portion 220a may be provided in the form of a through hole.

The first blowing unit 230a provides a transfer force for allowing external air to flow into the first device unit 200. The first blowing part 230a may be provided in a structure capable of guiding the flow of air. In one embodiment, the first blowing part 230a may be a fan (fan).

In the illustrated embodiment, the first blowing part 230a is located adjacent to the first suction part 210a, but the location thereof may be changed. Alternatively, the first blowing part 230a may be located adjacent to the first exhaust part 220a, or may be provided inside the first device part 200.

The first blowing unit 230a may be provided at a position where it can provide a transfer force for allowing the outside air to flow into the first device unit 200.

In the illustrated embodiment, the first device part 200 includes a third air intake part 210c, a third air discharge part 220c, and a third air supply part 230 c. The third air intake part 210c, the third exhaust part 220c, and the third air blowing part 230c may be positioned below the first air intake part 210a, the first exhaust part 220a, and the first air blowing part 230a, respectively.

The third air intake part 210c, the third exhaust part 220c, and the third air blowing part 230c have the same structure and function as the first air intake part 210a, the first exhaust part 220a, and the first air blowing part 230 c.

The inverter module 240 described later generates a large amount of heat. In view of this, it is preferable to additionally provide the third air intake unit 210c, the third air exhaust unit 220c, and the third air blowing unit 230c to more effectively cool the inside of the first device unit 200.

Therefore, the outside air for cooling the first device unit 200 obtains a transfer force by the first air blowing unit 230a and the third air blowing unit 230 c. The external air flows into the first device unit 200 through the first and third

air intake units

210a and 210c, cools the inverter module 240, which will be described later, and is discharged through the first and

third exhaust units

220c and 220 c.

An additional power supply unit (not shown) that transmits power for driving the first and

third blowing parts

230a and 230c may be provided.

The inverter module 240 is a part that substantially functions to receive direct current and convert the direct current into alternating current.

The inverter module 240 may include a capacitor (capacitor)241, a heat sink (heatsink)242, an IGBT (Insulated Gate Bipolar Transistor) 243, an SMPS (Switching Mode Power Supply) 244, a fuse (fuse), and the like.

Since the process of converting the direct current into the alternating current by the inverter module 240 is a well-known technique, a detailed description thereof will be omitted.

The inverter module 240 receives dc power from a main bus bar 550, which will be described later, through the input terminal portion 150 a. The ac power converted by the inverter module 240 is transmitted to a main bus bar 550, which will be described later, through the output terminal unit 150 b.

The ac power converted by the inverter module 240 may be transmitted to a filter 340 (described later) to remove noise (noise). For this purpose, an electrical unit (not shown) may be provided to connect the inverter module 240 and the filter 340, which will be described later, so as to be able to conduct electricity.

3) Description of the second device 300

The second device portion 300 houses the filter 340. In the illustrated embodiment, the second device part 300 is located at an upper side of the first device part 200.

This is because, as described above, the filter 340 housed in the second device portion 300 is lighter than the inverter module 240 housed in the first device portion 200.

The second device part 300 and the first device part 200 are physically separated by the partition 400. A description thereof will be made later.

The second device unit 300 includes a second air intake unit 310, a second air exhaust unit 320, a second air blowing unit 330, and a filter 340.

The second air intake unit 310 provides a passage through which outside air can flow into the second device unit 300. The second suction part 310 may be provided in the form of a through hole.

In the illustrated embodiment, the second air intake part 310 is formed on the front side of the second device part 300, but the position thereof may be changed.

The outside air flowing into the second air intake unit 310 cools the filter 340 housed inside the second device unit 300, and is then discharged from the second exhaust unit 320.

The second exhaust unit 320 is a passage through which the external air flowing into the second device unit 300 can be discharged after exchanging heat with the filter 340. The second exhaust portion 320 may be provided in the form of a through hole.

The second blowing unit 330 provides a transfer force for allowing the external air to flow into the second device unit 300. The second blowing part 330 may be provided in a structure capable of guiding the flow of air. In one embodiment, the second blowing part 330 may be a fan.

In the illustrated embodiment, the second blowing part 330 is located adjacent to the second exhaust part 320, but the location thereof may be changed. Alternatively, the second blowing part 330 may be located adjacent to the second exhaust part 320, or may be disposed inside the second device part 300.

The second blowing unit 330 may be provided at a position where a transfer force for allowing the outside air to flow into the second device unit 300 can be provided.

In the illustrated embodiment, the second device unit 300 has no additional structure for inflow of external air, except for the second air intake unit 310, the second air exhaust unit 320, and the second air blowing unit 330.

This is because, as described above, the amount of heat generation of the filter 340 accommodated in the second device portion 300 is relatively smaller than the amount of heat generation of the inverter module 240 accommodated in the first device portion 200.

Alternatively, the second device unit 300 may be provided with an additional structure for inflow of outside air. It is preferable to determine whether or not an additional structure for inflow of external air is provided in consideration of the overall size of the inverter device 10, the coupling relationship with an inverter panel 500 described later, and the like.

The outside air for cooling the second device unit 300 obtains a transfer force by the second air blowing unit 330. The external air flows into the second device 300 through the second air intake unit 310, cools the filter 340, and is discharged through the second exhaust unit 320.

A power supply unit (not shown) for transmitting power for driving the second blowing part 330 may be separately provided.

The filter 340 is a part for performing filtering that removes noise of the alternating current converted by the inverter module 240.

Since the process of filtering the alternating current by the filter 340 is a well-known technique, a detailed description thereof will be omitted.

The filter 340 receives dc power from a main bus bar 550, which will be described later, via the input terminal portion 150 a. In addition, the ac power filtered by the filter 340 is transferred to the main bus bar 550 through the output terminal part 150 b.

In order for the filter 340 to receive the alternating current converted by the inverter module 240, an electrical unit (not shown) may be provided that can connect the inverter module 240 and the filter 340 to be energized.

The operation and speed of the first, second, and third

air blowing units

230a, 330, and 230c may be controlled independently of each other.

4) Concerning separationDescription of section 400

The partition 400 partitions the first device part 200 and the second device part 300. Specifically, the first device portion 200 and the second device portion 300 are physically separated by the partition portion 400.

This is to prevent the outside air flowing into the first device portion 200 and the second device portion 300 from being mixed with each other, as will be described later.

Specifically, as described above, the amount of heat generation of the inverter module 240 housed in the first device portion 200 is larger than the amount of heat generation of the filter 340 housed in the second device portion 300.

At this time, in the absence of the partition 400, the external air flowing into the inside of the first device portion 200 and the external air flowing into the inside of the second device portion 300 may be mixed. In this case, there is a risk that air of the first device portion 200 having high heat flows into the second device portion 300 and the filter 340 is damaged due to high temperature.

In addition, the air having cooled the filter 340 in the second device part 300 may flow into the first device part 200. Since it is apparent that the temperature of the air is higher than that of the outside air, there is a risk that the cooling efficiency of the inverter module 240 is lowered.

Therefore, the partition 400 prevents the external air flowing into each

device part

200, 300 from being mixed with each other by physically separating the first device part 200 and the second device part 300.

The partition 400 may be formed of a substance having low thermal conductivity.

The position of the partition 400 may be changed according to the sizes of the first device part 200 and the second device part 300. For example, in the case where the first device portion 200 is smaller in size than the illustrated embodiment, the position of the partition portion 400 may be moved downward along the boundary between the first device portion 200 and the second device portion 300.

(2) Description about inverter panel 500

The inverter panel 500 of the embodiment of the invention may house the inverter device 10. In addition, the power conversion apparatus 1 may be configured by connecting a plurality of inverter panels 500 to each other so as to be energizable.

Next, referring back to fig. 4 to 7 and 13 to 15, the inverter panel 500 according to the embodiment of the present invention will be described in detail.

The inverter panel 500 accommodates the inverter device 10. In the illustrated embodiment, each inverter panel 500 accommodates the inverter device 10 on the upper side and the lower side, respectively. That is, one inverter panel 500 may accommodate two inverter devices 10.

The number of inverter devices 10 that can be accommodated in each inverter panel 500 can be changed.

In the illustrated embodiment, the inverter device 10 is housed in the inverter panel 500 so as to be long in the upper and lower directions. Alternatively, the inverter device 10 may be accommodated in the inverter panel 500 so as to be laid long in the left and right directions.

An openable and closable door (not shown) may be provided on the front side of the inverter panel 500. Therefore, the front side of the inverter panel 500 is normally closed, and when it is necessary to insert or separate the inverter device 10, the front side of the inverter panel 500 can be opened by operating a door (not shown).

The inverter panel 500 includes a first inverter receiving portion 510, a second inverter receiving portion 520, and a main bus bar 550.

The first inverter housing portion 510 is a space in which the inverter device 10 is housed. In the illustrated embodiment, the first inverter accommodating part 510 is formed by a space located at an upper side of the inverter panel 500.

An opening portion is formed on the front side of the first inverter housing portion 510, and the inverter device 10 can be housed inside the first inverter housing portion 510 through the opening portion.

A first panel intake portion 511 is formed on the front side of the first inverter housing portion 510.

The first panel intake portion 511 is a passage through which external air can flow into the first inverter housing portion 510. The first panel suction unit 511 may be provided in the form of a through hole.

The first panel exhaust portion 512 is a passage through which the external air flowing into the first inverter housing portion 510 can be exhausted to the outside of the first inverter housing portion 510. The first panel exhaust part 512 may be provided in the form of a through hole.

As described above, the inverter device 10 accommodated in the first inverter accommodating portion 510 has a structure for inflow and discharge of external air. In addition, the first inverter housing portion 510 also has a structure for inflow and discharge of external air.

That is, the external air may cool the inverter device 10 through the first panel intake part 511, the first to third intake parts 210a to 230a, the first to third exhaust parts 210c to 230c, and the first panel exhaust part 512 in this order.

A detailed description about the flow process of the outside air will be made later.

The second inverter housing portion 520 is a space in which the inverter device 10 is housed. In the illustrated embodiment, the second inverter receiving part 520 is formed of a space located at a lower side of the inverter panel 500.

An opening is formed on the front side of the second inverter housing portion 520, and the inverter device 10 is housed inside the second inverter housing portion 520 through the opening.

A second panel intake portion 521 is formed on the front side of the second inverter housing portion 520.

The second panel intake section 521 is a passage through which external air can flow into the second inverter housing section 520. The second panel suction unit 521 may be provided in the form of a through hole.

The second panel exhaust portion 522 is a passage through which the outside air flowing into the second inverter housing portion 520 can be discharged to the outside of the second inverter housing portion 520. The second panel exhaust part 522 may be provided in the form of a through hole.

The structure of the second inverter housing portion 520 for allowing the inflow and discharge of the external air forms a flow path for the external air after the inverter device 10 is housed.

That is, the external air may cool the inverter device 10 through the second panel intake 521, the first to third intake sections 210a to 230a, the first to third exhaust sections 210c to 230c, and the second panel exhaust section 522 in this order.

The main bus bar 550 receives dc power from the outside and supplies the dc power to the inverter device 10, and receives ac power converted by the inverter device 10 and transmits the ac power to an external load.

In the illustrated embodiment, the main bus bar 550 is located at a position biased toward the rear side of the inverter panel 500, but the position of the main bus bar 550 may be changed.

However, the inverter device 10 housed in the inverter panel 500 may be electrically connected to any place.

The main bus bar 550 is electrically connectable with the power input panel 610 of the power panel 600. Accordingly, the main bus bar 550 may receive direct current from the power input panel 610.

In addition, the main bus bar 550 is electrically connectable with the power output panel 620 of the power panel 600. Therefore, the main bus bar 550 may transfer the ac power received from the inverter device 10 to an external load.

The main bus bar 550 of each inverter panel 500 may be electrically connectable with the main bus bars 550 of other inverter panels 500.

That is, in the illustrated embodiment, the plurality of inverter panels 500 are arranged in a row and left and right sides of the plurality of inverter panels 500 contact each other. At this time, the main bus bars 550 of the respective inverter panels 500 may be electrically connectable to each other.

Therefore, the power conversion capacity of the power conversion device 1 can be changed only by changing the number of inverter panels 500 provided in the power conversion device 1.

That is, the inverter device 10 having a predetermined power conversion capacity is housed in each inverter panel 500. With the provision of a plurality of inverter panels 500, the power conversion capacity of the entire power conversion device 1 is also increased.

Alternatively, the main bus bar 550 may not be provided at each inverter panel 500, but may be separately provided and electrically connected to the main bus bar 550 at each inverter panel 500.

In the illustrated embodiment, the main bus bar 550 is constituted by a first main bus bar 550a and a second main bus bar 550b (refer to fig. 14 and 15).

This is because the inverter panel 500 is provided with the first inverter accommodating part 510 on the upper side and the second inverter accommodating part 520 on the lower side.

That is, the first main bus bar 550a is electrically connectable to the inverter device 10 accommodated in the first inverter accommodating portion 510. In addition, the second main bus bar 550b is electrically connectable to the inverter device 10 accommodated in the second inverter accommodating portion 520.

Alternatively, the main bus bar 550 may be provided with a single one. That is, one main bus bar 550 may be electrically connected to both of the inverter devices 10 accommodated in the first inverter accommodating portion 510 and the second inverter accommodating portion 520.

The main bus bar 550 includes ports 551.

The port 551 is a means for connecting the main bus bar 550 and the inverter device 10 to be energizable. Specifically, the main bus bar 550 is electrically connectable to the port 551.

The port 551 is coupled to the input terminal portion 150a and the output terminal portion 150b provided in the inverter device 10, thereby electrically connecting the inverter device 10 and the main bus bar 550.

In view of an effect of the inverter device 10 of the embodiment of the present invention to be easily accommodated and separated in the inverter panel 500, it is preferable that the port 551 is detachably combined with the input terminal part 150a and the output terminal part 150 b.

The port 551 includes a first port 551a and a second port 552 b.

The first port 551a electrically connects the first main bus bar 550a and the inverter device 10. As described above, the inverter device 10 is the inverter device 10 accommodated in the first inverter accommodating portion 510.

The second port 551b electrically connects the second main bus bar 550b and the inverter device 10. As described above, the inverter device 10 is the inverter device 10 accommodated in the second inverter accommodating portion 520.

(3) Description on the indoor inverter panel 500a

The power conversion apparatus 1 according to an embodiment of the present invention includes an indoor inverter panel 500 a.

The indoor inverter panel 500a is premised on the power conversion device 1 being installed indoors. The indoor inverter panel 500a includes not only the inverter device 10 but also a PCB device 534, which will be described later, inside thereof.

Therefore, the indoor inverter panel 500a is different from the above-described inverter panel 500 in that a single inverter device 10 is accommodated and a PCB device accommodating part 530 for accommodating the PCB device 534 is included.

Next, the indoor inverter panel 500a according to the embodiment of the present invention will be described in detail with reference to fig. 16 to 19.

The indoor inverter panel 500a of the illustrated embodiment includes an indoor cover 501a, an indoor door 502a, a first inverter receiving part 510, a PCB device receiving part 530, and a base part 540.

The indoor cover 501a forms the outside of the indoor inverter panel 500 a. In the illustrated embodiment, the indoor cover 501a has a rectangular parallelepiped shape formed long along the upper and lower sides, but the shape thereof may be modified.

The indoor door 502a is positioned on the front side of the indoor cover 501 a. The indoor door 502a may be provided in any configuration that can open or close the front side of the indoor inverter panel 500 a.

The indoor door 502a is formed with a first panel suction unit 511. Since the structure and function of the first panel suction unit 511 are the same as those described above, redundant description is omitted.

A first inverter accommodating part 510 and a PCB device accommodating part 530 are formed inside the indoor inverter panel 500 a.

The first inverter receiving part 510 is located at an upper side of the PCB device receiving part 530. Since the structure and function of the first inverter housing portion 510 are the same as those described above, a repetitive description will be omitted.

The PCB device receiving part 530 is located at a lower side of the first inverter receiving part 510. A PCB device 534 for controlling the power conversion device 1 is accommodated inside the PCB device accommodating portion 530. The PCB unit 534 is electrically connected to the inverter unit 10, and controls the inverter unit 10.

The PCB device accommodating part 530 includes an external air inflow part 531, an external air discharge part 532, a panel blowing part 533, and a PCB device 534.

In addition, as shown, a filter 340 may be provided at the PCB device receiving part 530.

The external air inflow part 531 is a passage through which external air for cooling the PCB device received in the PCB device receiving part 530 flows.

In the illustrated embodiment, the external air inflow part 531 is formed at a lower side of the PCB device receiving part 530 with an opening part. The external air inflow portion 531 is aligned with an external air supply portion 542 of the base portion 540, which will be described later.

The external air inflow part 531 may be formed at any position where external air can be introduced into the PCB device receiving part 530. However, as will be described later, the outside air inflow portion 531 is preferably located at a position corresponding to the position of the outside air supply portion 542, which will be described later.

The external air discharge part 532 provides a passage capable of discharging the external air flowing into the PCB device receiving part 530 after heat exchange with the PCB device 534.

In the illustrated embodiment, the outside air discharge part 532 is formed with an opening part at the rear side of the indoor inverter panel 500 a. The external air discharge part 532 may be formed at any position where air inside the PCB device receiving part 530 can be discharged to the outside of the PCB device receiving part 530.

The external air discharge unit 532 is provided with a panel blowing unit 533.

The panel blowing part 533 provides a transfer force for allowing external air to flow into the interior of the indoor inverter panel 500 a. The panel blowing part 533 may be provided to guide the flow of air. In one embodiment, the panel blowing part 533 may be a fan.

In the illustrated embodiment, the panel blowing part 533 is located adjacent to the external air discharge part 532, but the position thereof may be changed. Alternatively, the panel blowing part 533 may be located adjacent to the external air inflow part 531, or may be disposed inside the PCB device accommodating part 530.

The panel blowing part 533 may be provided at a position where a transfer force for allowing external air to flow into the PCB device accommodating part 530 can be provided.

The base part 540 is located below the indoor cover 501a of the indoor inverter panel 500 a. The base part 540 separates the indoor inverter panel 500a from the ground by a predetermined distance. In addition, the base part 540 forms a passage into which external air for cooling the PCB device receiving part 530 flows.

Preferably, the shape of the base 540 corresponds to the shape of the indoor cover 501 a.

The base unit 540 includes a first base suction unit 541a, a second base suction unit 541b, and an external air supply unit 542.

The first chassis suction unit 541a is formed in the front side of the chassis 540. The first base suction unit 541a forms a passage through which external air can flow into the base unit 540. The first chassis suction unit 541a may be formed in a through hole form.

In the illustrated embodiment, the first chassis suction parts 541a are formed at the front left and right sides of the chassis 540, respectively, but the positions and the number thereof may be changed.

The second chassis air suction unit 541b is formed on the rear side of the chassis 540. The second base suction unit 541b forms a passage through which the outside air can flow into the base unit 540. The second chassis suction unit 541b may be formed in a through hole shape.

In the illustrated embodiment, the second chassis suction parts 541b are formed at the rear left and right sides of the chassis part 540, respectively, but the positions and the number thereof may be changed.

The external air supply part 542 provides a passage through which external air flowing into the base part 540 exits the base part 540 to flow into the PCB device housing part 530. The external air supply unit 542 may be formed with an opening.

The external air supply part 542 and the external air inflow part 531 of the PCB device receiving part 530 are aligned with each other. That is, the external air discharged from the external air supply unit 542 flows into the PCB device accommodating unit 530 through the external air inflow unit 531 without leaking to other portions.

At this time, the transfer force for the flow of the external air may be naturally generated or may be provided by the panel blowing part 533.

The flow of the external air through the indoor inverter panel 500a will be described in detail later.

Although not shown, the main bus bar 550 may be provided on the indoor inverter panel 500 a. As described above, the main bus bar 550 may be electrically connected to the inverter device 10, the PCB device 534, and the filter 340.

(4) Description on outdoor inverter panel 500b

The power conversion apparatus 1 of an embodiment of the present invention includes an outdoor inverter panel 500 b.

The outdoor inverter panel 500b is premised on the power conversion device 1 being installed outdoors. In addition, the outdoor inverter panel 500b not only houses the inverter device 10 at the inner side thereof, but also includes a PCB device 534.

Therefore, the outdoor inverter panel 500b is different from the above-described inverter panel 500 in that a single inverter device 10 is accommodated and a PCB device accommodating part 530 for accommodating the PCB device 534 is included.

Next, the outdoor inverter panel 500b according to the embodiment of the present invention will be described in detail with reference to fig. 20 to 23.

The outdoor inverter panel 500a of the illustrated embodiment includes an outdoor cover 501b, an outdoor door 502b, a first inverter receiving part 510, a PCB device receiving part 530, and a base part 540.

The outdoor cover body 501b forms the outside of the outdoor inverter panel 500 a. In the illustrated embodiment, the outdoor cover 501b has a rectangular parallelepiped shape formed long along the upper and lower sides, but the shape thereof may be modified.

A ceiling plate is provided above the outdoor cover body 501 b. Therefore, even if the outdoor inverter panel 500b is installed outdoors, rainwater, snow, or the like can be prevented from flowing into the interior of the outdoor cover body 501 b.

The outdoor door 502b is positioned on the front side of the outdoor cover 501 b. The outdoor door 502b may be provided in any structure capable of opening or closing the front side of the outdoor inverter panel 500 a.

The outdoor door 502b is provided with a first panel suction unit 511. The structure and function of the first panel suction unit 511 are the same as those described above, and therefore, redundant description is omitted.

A first inverter accommodating part 510 and a PCB device accommodating part 530 are formed at an inner side of the outdoor inverter panel 500 a.

The first inverter receiving part 510, the PCB device receiving part 530, and the base part 540 have the same structure and function as the indoor inverter panel 500b described above. And therefore, duplicate explanation is omitted.

(5) Description of Power Panel 600

The power conversion apparatus 1 of the embodiment of the present invention includes a power panel 600 for receiving and transmitting power from and to the outside.

Next, referring to fig. 4 and 5, fig. 24 to 26 explain the power panel 600 of the illustrated embodiment in detail.

The power panel 600 is located adjacent to the inverter panel 500. In addition, the power panel 600 and the inverter panel 500 are electrically connectable.

The power panel 600 receives the direct current from the outside and transmits the direct current to the inverter panel 500. The dc power transmitted to the inverter panel 500 is transmitted to the inverter device 10 and converted into ac power.

In addition, power panel 600 receives the ac power converted by inverter device 10 from inverter panel 500. The ac power transmitted to the power panel 600 is transmitted to an external load.

The power panel 600 includes a power input panel 610 and a power output panel 620.

The power input panel 610 receives direct current from the outside. For this, the power input panel 610 may be electrically connectable with the outside.

The power input panel 610 includes a power input terminal part 611.

The power input terminal portion 611 is a channel for connecting the power input panel 610 and an external power source. The power supply input terminal portion 611 is electrically connectable to an external power supply via an input lead cable (not shown).

The dc power received by the power input panel 610 is transmitted to the inverter device 10 through the main bus bar 550 of the inverter panel 500. For this purpose, a power supply unit (not shown) may be provided to connect the power input terminal portion 611 and the main bus bar 550 to be able to supply power.

Preferably, the number of the power input terminal parts 611 corresponds to the number of the input power conversion lines 711. For example, two input power conversion lines 711 may be provided in the case of direct current, according to which the number of power input terminal sections 611 is also provided with two.

In the illustrated embodiment, the power input panel 610 is located on the right side of the plurality of inverter panels 500. The position of the power input panel 610 may be changed.

A vent (not shown) is formed at a front side of the power input panel 610, so that external air for cooling the inside of the power input panel 610 can flow in.

An operation unit (not shown) such as a switch is provided on the front side surface of the power input panel 610, and thus a control signal for operating the power conversion device 1 can be applied.

An input line conversion panel 710, which will be described later, may be provided on the other side of the power input panel 610, which is opposite to the side adjacent to the inverter panel 500, i.e., on the right side surface of the illustrated embodiment. This will be explained later.

The power output panel 620 delivers ac power to the outside. To this end, the power output panel 620 may be electrically connectable with the outside.

The power output panel 620 includes a power output terminal portion 621.

The power output terminal portion 621 is a path for connecting the power output panel 620 and an external load. The power supply output terminal portion 621 is electrically connectable to an external power supply via an output lead cable (not shown).

The ac power transmitted from the power output panel 620 to the external load is transmitted to the power output panel 620 through the main bus bar 550 of the inverter panel 500. For this purpose, a current-carrying unit (not shown) may be provided to connect the power output terminal portion 621 and the main bus bar 550 to be able to carry out current-carrying.

Preferably, the number of the power output terminal parts 621 corresponds to the number of the output power conversion lines 721. For example, three output power conversion lines 721 may be provided in the case of alternating current, and accordingly, the number of power output terminal parts 621 is also provided with three.

In the illustrated embodiment, the power output panel 620 is located on the left side of the plurality of inverter panels 500. The position of the power output panel 620 may be changed.

A vent (not shown) is formed at a front side of the power output panel 620, so that external air for cooling the inside of the power output panel 620 can flow in.

An output line conversion panel 720, which will be described later, may be provided on the other side of the power output panel 620, which is opposite to the side adjacent to the inverter panel 500, i.e., on the left side surface of the illustrated embodiment. This will be explained later.

(6) Description of line conversion panel 700

The power conversion apparatus 1 of the embodiment of the present invention includes a line conversion panel 700 for changing an input path of direct current and an output path of alternating current.

The line conversion panel 700 is located adjacent to the power panel 600 and is electrically connectable with the power panel 600. The line conversion panel 700 may be combined with the power panel 600 in an add-on (add-on) manner as a module.

Next, the line conversion panel 700 of the illustrated embodiment is explained in detail with reference to fig. 24 to 27.

The line conversion panel 700 changes a path for transmitting power to the power panel 600 or receiving power from the power panel 600.

The line conversion panel 700 receives a direct current from the outside and transfers the direct current to the power panel 600. In addition, the line conversion panel 700 receives ac power from the power panel 600 and transmits the ac power to an external load.

Line conversion panel 700 includes an input line conversion panel 710 and an output line conversion panel 720.

The input line conversion panel 710 receives a direct current from the outside and transfers the received direct current to the power input panel 610.

The input line conversion panel 710 is located adjacent to the power input panel 610. In addition, the input line conversion panel 710 and the power input panel 610 are electrically connectable.

In the illustrated embodiment, the input line conversion panel 710 is located adjacent to the right side of the power input panel 610, but the location thereof may be changed. However, regardless of where the input line conversion panel 710 is located, it is preferable that the input line conversion panel 710 is located adjacent to the power input panel 610.

The input line conversion panel 710 includes an input power conversion line 711, an input opening 712, and an input line terminal portion 713.

The input power conversion line 711 electrically connects an input line terminal portion 713, which will be described later, and the power input terminal portion 611 of the power input panel 610.

The shape of the input power conversion wiring 711 may be changed. Specifically, the shape of the input power conversion line 711 may be changed according to the position of the input line terminal portion 713, the position of the power input terminal portion 611, and the internal structure of the input line conversion panel 710, which will be described later.

Therefore, the position of the input line terminal portion 713 and the position of the power input terminal portion 611, which will be described later, can be freely determined by the input power conversion line 711.

The input opening portion 712 provides a passage through which an external input lead cable (not shown) can be connected to an input line terminal portion 713, which will be described later.

In the illustrated embodiment, the input opening portions 712 are formed on the upper side, the right side, and the rear side of the input line conversion panel 710, respectively. Further, on the right side of the input line conversion panel 710, input openings 712 are formed on the upper side and the lower side, respectively.

That is, the input opening 712 may be formed on a side of the input line conversion panel 710 that is not adjacent to the power input panel 610.

This is to improve the degree of freedom in selecting the position of the input line terminal portion 713 to be described later. That is, as the position of the input opening portion 712 varies, the position of the input line terminal portion 713 for receiving the dc power from the outside of the power conversion device 1 may be set differently.

The input opening 712 to which an input lead cable (not shown) is not connected may be provided with a cover (not shown) to prevent foreign substances and the like from flowing in.

The input line terminal portion 713 is a channel that receives direct current from the outside (see fig. 31). The input line terminal portion 713 is connected to an external power supply via a conductive line input cable (not shown).

In one embodiment, the input line terminal portion 713 and the wire input cable (not shown) may be screw-coupled. In this case, the input line terminal portion 713 and the wire input cable (not shown) can be firmly fastened.

The input line terminal portion 713 may be provided in plural. Specifically, the input line terminal portion 713 may be provided in each of the plurality of input opening portions 712. Alternatively, the input line terminal portion 713 may be provided in any one of the plurality of input opening portions 712. In such an embodiment, the path of receiving the direct current can be diversified. Therefore, user convenience can be improved.

The output line conversion panel 720 receives the direct current from the outside and transfers the received direct current to the power output panel 620.

The output line conversion panel 720 is located adjacent to the power output panel 620. In addition, the output line conversion panel 720 and the power output panel 620 are electrically connectable.

In the illustrated embodiment, the output line conversion panel 720 is located adjacent to the left side of the power output panel 620, but the location thereof may be changed. However, regardless of where the output line conversion panel 720 is located, it is preferable that the output line conversion panel 720 is located adjacent to the power output panel 620.

The output line conversion panel 720 includes an output power conversion line 721, an output opening portion 722, and an output line terminal portion 723.

The output power conversion circuit 721 electrically connects an output circuit terminal 723 to be described later to the power output terminal 621 of the power output panel 620.

The shape of the output power conversion wiring 721 may be changed. Specifically, the shape of the output power conversion line 721 may be changed according to the position of the output line terminal 723, the position of the power output terminal 621, and the internal structure of the output line conversion panel 720, which will be described later.

Therefore, the position of the output line terminal portion 723 and the position of the power output terminal portion 621, which will be described later, can be freely determined by the output power supply switching line 721.

The output opening 722 provides a passage through which an external output lead cable (not shown) can be connected to an output line terminal 723 described later.

In the illustrated embodiment, the output opening portions 722 are formed on the upper side, the left side, and the rear side of the output line conversion panel 720, respectively. On the left side of the output line conversion panel 720, output openings 722 are formed on the upper side and the lower side, respectively. That is, the output opening 722 may be formed on a side of the output line conversion panel 720 that is not adjacent to the power output panel 620.

This is to improve the degree of freedom in selecting the position of the output line terminal portion 723 to be described later. That is, as the position of the output opening portion 722 varies, the position of the output line terminal portion 723 for transmitting the alternating current from the power conversion device 1 to the external load can be set differently.

The output opening 722 to which the output lead cable (not shown) is not connected may be provided with a cover (not shown) to prevent foreign matter and the like from flowing in.

The output line terminal 723 is a channel for transmitting ac power to an external load (see fig. 31). The output line terminal 723 is connected to an external power supply via a lead output cable (not shown).

In one embodiment, the output line terminal portion 723 and the wire output cable (not shown) may be screw-coupled. In this case, the output line terminal portion 723 and the conductive line output cable (not shown) can be firmly fastened.

The output line terminal portion 723 may be provided in plural. Specifically, the output line terminal portion 723 may be provided in each of the plurality of output opening portions 722. Alternatively, the output line terminal portion 723 may be provided in any one of the plurality of output opening portions 722. In such an embodiment, the path through which the alternating current is delivered may be diversified. Therefore, user convenience can be improved.

2. Description of air flow process of inverter device 10 relating to the embodiment of the present invention

In the inverter device 10 according to the embodiment of the present invention, the outside air may flow into the first device portion 200 and the second device portion 300, respectively. The inflow external air may cool the inverter module 240 of the first device part 200 and the filter 340 of the second device part 300 and then be discharged.

Next, an air flow process in the inverter device 10 of the embodiment of the present invention is described in detail with reference to fig. 28.

First, the air flow process in the first device portion 200 is explained.

When the first air blowing part 230a and the third air blowing part 230c are operated, the external air flows into the first device part 200 through the first air intake part 210a and the third air intake part 210 c. At this time, as described above, the first air blowing part 230a and the third air blowing part 230c provide a transfer force for the flow of the external air.

Even if the first air blowing part 230a and the third air blowing part 230c are not operated, the outside air may flow into the first device part 200 by natural force such as wind.

The external air continuously flows into the first device portion 200 by the operation of the first air blowing part 230a and the third air blowing part 230 c. Therefore, the outside air flowing into the first device portion 200 is pushed by the outside air flowing in later and flows to the rear side of the first device portion 200.

At this time, the inverter module 240 is located between the first and

third intake parts

210a and 220a and the third and

fourth exhaust parts

210c and 220 c. Therefore, the inverter module 240 is cooled by heat exchange between the external air and the inverter module 240.

Through the above process, after the external air flowing inside the first device portion 200 reaches the rear side of the first device portion 200, it is discharged from the first device portion 200 via the first exhaust portion 220a and the third exhaust portion 220 c.

Next, a flow process of air in the second device portion 300 is described.

When the second blowing unit 330 is operated, the external air flows into the second device unit 300 through the second suction unit 310. At this time, as described above, the second blowing part 330 supplies a transfer force for the flow of the external air.

Even if the second blowing unit 330 is not operated, the outside air can flow into the second device unit 300 by natural force such as wind.

The outside air continuously flows into the second device 300 by the operation of the second blowing unit 330. Therefore, the external air flowing into the second device portion 300 is pushed by the external air flowing in the subsequent direction to flow toward the rear side of the second device portion 300.

At this time, the filter 340 is positioned between the second suction part 310 and the second discharge part 320. Therefore, the filter 340 is cooled by heat exchange between the outside air and the filter 340.

Through the above process, the external air flowing inside the second device part 300 reaches the rear side of the second device part 300, and is then discharged from the second device part 300 through the second exhaust part 320.

In this case, as described above, whether or not the first air blowing unit 230a, the second air blowing unit 330, and the third air blowing unit 230c operate, the operating speed, and the like may be independently controlled.

As described above, the first device part 200 and the second device part 300 are physically separated by the partition 400.

Therefore, the outside air flowing inside the first device unit 200 and the outside air flowing inside the second device unit 300 are not mixed.

Therefore, the inverter module 240 and the filter 340 are effectively cooled without affecting each other.

Since the heat generation amount of the inverter module 240 is higher than the heat generation amount of the filter 340, the third air intake unit 210c, the third exhaust unit 220c, and the third air blowing unit 230c are additionally provided in the first device unit 200 as described above.

3.1. Description about air flow process of inverter panel 500 of the embodiment of the present invention

In the inverter panel 500 of the embodiment of the invention, the outside air for cooling the inverter device 10 housed inside thereof can be flown in. The outside air that has flowed in can cool the inverter module 240 and the filter 340 provided in the inverter device 10 and then be discharged.

Next, an air flow process of the inverter panel 500 according to the embodiment of the present invention will be described in detail with reference to fig. 29.

As described above, the first inverter housing portion 510 and the second inverter housing portion 520 are provided with the first panel intake portion 511 and the second panel intake portion 521, respectively.

When the inverter device 10 accommodated in the first inverter accommodating portion 510 operates, the first air blowing portion 230a, the second air blowing portion 330, and the third air blowing portion 230c provided in the inverter device 10 operate.

The first, second, and

third blowing parts

230a, 330, and 230c provide a transfer force for allowing external air to flow into the inverter panel 500. Thereby, the external air flows into the inverter panel 500 through the first panel intake portion 511 and the second panel intake portion 521.

The external air flowing into the inverter panel 500 is still in a state of receiving the transfer force from the first air blowing unit 230a, the second air blowing unit 330, and the third air blowing unit 230 c. Therefore, the outside air flows to the first device portion 200 and the second device portion 300 of the inverter device 10.

The process of discharging the outside air after the outside air flows into the inverter device 10 is the same as that described above.

The external air discharged from the inverter device 10 is in a state of still receiving the transfer force provided by the first air blowing unit 230a, the second air blowing unit 330, and the third air blowing unit 230 c. Therefore, the outside air moves to the rear side of the inverter panel 500.

As described above, the first panel exhaust part 512 and the second panel exhaust part 522 are formed on the rear side of the inverter panel 500. Therefore, the external air is discharged to the outside of the inverter panel 500 via the first panel exhaust part 512 and the second panel exhaust part 522.

In summary, the outside air inflow and discharge flow paths including the

panel air intakes

511 and 521, the

air intakes

210a, 310 and 210c, the inverter device 10, the air exhausts 220a, 320 and 220c, and the panel exhausts 512 and 522 are formed.

3.2. Airflow with respect to the indoor inverter panel 500a and the outdoor inverter panel 500b of the embodiment of the present invention Description of the moving Processes

In the indoor inverter panel 500a and the outdoor inverter panel 500b of the embodiment of the present invention, the external air for cooling the inverter device 10 and the PCB device 534 accommodated therein may flow in.

The inflow external air can be discharged after cooling the inverter module 240, the filter 340, and the PCB unit 534 provided in the inverter device 10.

Next, an air flow process of the indoor inverter panel 500a and the outdoor inverter panel 500b according to the embodiment of the present invention will be described in detail with reference to fig. 30.

Since the flow process of the external air in the first inverter housing portion 510 is the same as that described above, a repetitive description will be omitted.

Next, a flow process of air in the PCB device receiving part 530 is explained.

As described above, the PCB device accommodating part 530 includes the external air inflow part 531, the external air discharge part 532, and the panel blowing part 533. In addition, the base part 540 is located at a lower side of the PCB device receiving part 530.

When power is applied to the PCB 534, the panel blowing part 533 operates. Alternatively, the panel blowing part 533 may also operate in a case where power is applied to the indoor inverter panel 500a and the outdoor inverter panel 500 b.

As the panel blowing unit 533 operates, the outside air obtains a transfer force for moving to the first chassis suction unit 541a and the second chassis suction unit 541b of the chassis 540.

This is because the external air inflow portion 531 of the PCB device receiving part 530 and the external air supply portion 542 of the base part 540 are aligned with each other to communicate with each other.

The external air flowing into the chassis 540 through the first and second

chassis suction units

541a and 541b passes through the external air supply unit 542. At this time, the external air is not only moved toward the PCB device accommodating portion 530 by the panel blowing portion 533 but also pushed by the external air flowing into the base portion 540.

The external air flows into the PCB device receiving part 530 through the external air inflow part 531 of the PCB device receiving part 530.

The external air flowing into the PCB housing 530 is still in a state of receiving the transfer force provided by the panel blowing unit 533. Accordingly, the external air moves to the panel blowing part 533 positioned at the rear side of the PCB device accommodating part 530.

At this time, the external air moves to the panel blowing part 533 and exchanges heat with the PCB 534 or the filter 340, whereby the PCB 534 or the filter 340 is cooled.

As described above, the external air discharge part 532 is formed at the rear side of the PCB device receiving part 530. Therefore, the external air is discharged to the outside of the indoor inverter panel 500a and the outdoor inverter panel 500b via the external air discharge part 532.

In summary, the external air inflow and discharge flow paths including the

chassis suction parts

541a and 541b, the external air supply part 542, the external air inflow part 531, the PCB device accommodating part 530, and the external air discharge part 532 are formed.

4. In connection with the embodiments of the inventionThe power conversion device 1 according to (2) is configured to change the path of the input power supply and the output power supply Description of (1)

The power conversion apparatus 1 of the embodiment of the present invention includes a line conversion panel 700. As described above, the transmission position of the direct current and the transmission position of the alternating current can be changed by the line conversion panel 700.

Next, a mode of changing the power supply input and output paths of the power converter 1 according to the embodiment of the present invention will be described in detail with reference to fig. 31.

As described above, the line conversion panel 700 may be located adjacent to the power panel 600.

Specifically, the input line conversion panel 710 is located on one side of the power input panel 610, and in the illustrated embodiment, is located adjacent to the right side of the power input panel 610. In addition, the output line conversion panel 720 is located at one side of the power output panel 620, and in the illustrated embodiment, is located adjacent to the left side of the power output panel 620.

An inverter panel space S is formed between the power input panel 610 and the power output panel 620, and thus the inverter panel 500 can be coupled.

The power input terminal portion 611 provided on one side of the power input panel 610 may be electrically connected to one side of the input power conversion line 711 provided on the input line conversion panel 710.

In addition, the other side of the input power conversion line 711 is electrically connectable to the input line terminal portion 713.

At this time, the input line terminal portion 713 may be provided at a position where the input opening portion 712 is formed.

As described above, the input opening portion 712 may be located on the right side, the upper side, the rear side, and the like of the input line conversion panel 710. Therefore, the input line terminal portion 713 may be positioned on the right side, the upper side, the rear side, and the like of the input line conversion panel 710.

The input line terminal portion 713 is electrically connectable to an external input wire cable (not shown). Thus, the external dc power is transmitted to the power input panel 610 through the input lead cable (not shown), the input line terminal portion 713, the input power conversion line 711, and the power input terminal portion 611.

The power output terminal 621 provided on one side of the power output panel 620 is electrically connected to one side of the output power conversion circuit 721 provided on the output circuit conversion panel 720.

In addition, the other side of the output power source conversion line 721 is electrically connectable to the output line terminal portion 723.

In this case, the output line terminal portion 723 may be provided at a position where the output opening portion 722 is formed.

As described above, the output opening 722 may be located on the left side, the upper side, the rear side, and the like of the output line conversion panel 720. Therefore, the output line terminal unit 723 may be located on the left side, the upper side, the rear side, and the like of the output line conversion panel 720.

The output line terminal portion 723 is electrically connectable to an external output lead cable (not shown). Thus, the converted ac power is transmitted to an external load via the power output terminal 621, the output power conversion line 721, the output line terminal 723, and an output lead cable (not shown).

5. Description of effects of the power conversion device 1 according to the present invention

The power conversion apparatus 1 of the present invention is provided with a modular inverter apparatus 10. Each inverter device 10 includes an inverter module 240 for converting direct current into alternating current and a filter 340 for filtering the converted alternating current.

Therefore, the power conversion capacity of the entire power conversion device 1 can be adjusted only by changing the number of inverter devices 10.

In addition, according to the modularization of the inverter device 10, a space for separately accommodating the inverter device and the filter is not required. Therefore, the power conversion device 1 can be downsized, and the space for installing the power conversion device 1 can be reduced.

In addition, the outside air for cooling the inverter device 10 flows into the first device portion 200 accommodating the inverter module 240 and the second device portion 300 accommodating the filter 340, respectively. In addition, the inflowing external air is not mixed with each other by the partition 400.

Therefore, efficient cooling can be performed according to the amount of heat generated by each of the

device units

200 and 300.

The inverter panel 500 in which the inverter device 10 is housed is also provided with panel

air intake portions

511 and 521 and panel

air exhaust portions

512 and 522 for inflow of outside air. Therefore, the inverter device 10 housed inside the inverter panel 500 can be efficiently cooled.

In addition, the respective inverter panels 500 may be enlarged (scale up) by being electrically connectable to each other. Therefore, even in the case where the power conversion capacity needs to be changed in use, the power conversion capacity can be changed only by adding or reducing the inverter panel 500.

In addition, as the line conversion panel 700 is provided in an additional (add-on) manner, the input direction of the direct current and the output direction of the alternating current may be differently set. Therefore, the input direction and the output direction of the power supply can be set in accordance with the environment in which the power conversion apparatus 1 is installed, and the user's convenience can be improved.

Although the present invention has been described with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications and changes can be made to the present invention without departing from the scope of the technical spirit of the present invention as set forth in the claims.

Description of the reference numerals

1: power conversion device

10: inverter device

100: cover body

150 a: input terminal part

150 b: output terminal section

200: first device part

210 a: first air suction part

210 c: third air intake part

220 a: first exhaust part

220 c: third exhaust part

230 a: the first air supply part

230 c: third air supply part

240: inverter module

241: capacitor (capacitor)

242: heat sink (heatsink)

243: IGBT (insulated gate bipolar transistor)

244: SMPS (switch mode power supply)

245: fuse (fuse)

300: second device part

310: second air intake part

320: second exhaust part

330: second air supply part

340: filter (filter)

400: partition part

500: inverter panel

500 a: indoor inverter panel

500 b: outdoor inverter panel

501 a: indoor cover

501 b: outdoor cover

502 a: indoor door

502 b: outdoor door

510: first inverter housing part

511: first panel air suction part

512: first panel exhaust part

520: second inverter housing part

521: second panel air intake

522: second panel exhaust part

530: PCB device accommodating part

531: external air inflow part

532: external air discharge part

533: panel air supply part

534: PCB device

540: base part

541 a: first base air suction part

541 b: second base air suction part

542: external air supply unit

550: main bus bar

550 a: first main bus bar

550 b: second main bus bar

551: port(s)

551 a: first port

551 b: second port

600: power panel

610: power input panel

611: power input terminal part

620: power output panel

621: power supply output terminal part

700: line conversion panel

710: input line conversion panel

711: input power supply switching circuit

712: input opening part

713: input line terminal part

720: output line conversion panel

721: output power supply switching circuit

722: output opening part

723: output line terminal part

S: an inverter panel space part.

Claims

1. An inverter apparatus, comprising:

a first device unit in which an inverter module is provided that converts direct current into alternating current and supplies the alternating current to an external load;

a second device unit which is located adjacent to the first device unit and in which a filter for filtering noise (noise) of the alternating current is provided; and

a partition dividing the first device part and the second device part;

the first device portion includes:

a first air intake unit formed at one side of the first device unit, through which air for cooling the inverter module flows into the first device unit; and

a first exhaust unit formed at the other side of the first device unit opposite to the one side, through which the air flowed into the first suction unit is exhausted;

the second device portion includes:

a second air intake unit formed at one side of the second device unit facing the same direction as the first device unit, through which air for cooling the filter flows into the second device unit; and

and a second exhaust unit formed at the other side of the second device unit opposite to the one side, through which the air flowed into the second intake unit is exhausted.

2. The inverter device according to claim 1,

a first air blowing unit that supplies a transfer force to the air flowing inside the first device unit is provided in at least one of the first air suction unit and the first exhaust unit,

a second blowing unit that supplies a transfer force to the air flowing inside the second device unit is provided in at least one of the second air intake unit and the second exhaust unit.

3. The inverter device according to claim 1,

a third air intake part is formed at the side of the first device part adjacent to the first air intake part, and air for cooling the inverter module flows into the first device part through the third air intake part.

4. The inverter device according to claim 3,

the inverter module includes one or more of a capacitor (capacitor), a heat sink (heatsink), and an IGBT (Insulated Gate Bipolar Transistor).

5. An inverter panel, comprising:

an inverter device receiving the direct current and converting the direct current into alternating current; and

a first inverter housing section that houses the inverter device therein; and

a PCB device receiving part positioned at a lower side of the first inverter receiving part and receiving a PCB device therein;

the inverter device includes:

a partition dividing the first device part and the second device part;

the first device portion includes:

the second device portion includes:

a second exhaust unit formed at the other side of the second device unit opposite to the one side, through which air flowed into the second intake unit is exhausted;

the PCB device is electrically connected with the inverter device to control the inverter device.

6. The inverter panel according to claim 5,

one or more first panel intake portions through which air flows into the first inverter housing portion are formed on a side of the first inverter housing portion facing in the same direction as a side of the inverter device on which the first intake portion is formed,

a first panel exhaust unit that exhausts air inside the first inverter housing unit is formed on the other side of the first inverter housing unit that faces the same direction as the other side of the inverter device on which the first exhaust unit is formed.

7. The inverter panel according to claim 5,

an external air inflow part through which air flows into the PCB device receiving part is formed at a lower side of the PCB device receiving part.

8. The inverter panel according to claim 7,

including a base part at a lower side of the PCB device receiving part,

a first base suction part through which air for cooling the PCB device flows into the inside of the base part is formed at one side of the base part,

an external air supply part is formed at one side of the base part adjacent to the PCB device accommodating part, and air flowing into the base part is supplied to the PCB device accommodating part through the external air supply part,

the external air inflow part of the PCB device receiving part and the external air supply part of the base part are aligned with each other.

9. The inverter panel according to claim 7,

an external air exhaust part is formed at one side of the PCB device receiving part,

the external air flowing into the PCB device receiving part is discharged from the external air discharging part.

10. The inverter panel according to claim 9,

a panel blowing part is provided at one or more of the external air inflow part and the external air exhaust part of the PCB device accommodating part.

11. An inverter panel, comprising:

a first inverter housing section housing an inverter device that receives direct current and converts the direct current into alternating current; and

a second inverter housing portion located adjacent to the first inverter housing portion;

the inverter devices are housed in the first inverter housing portion and the second inverter housing portion, respectively,

the inverter device includes:

a partition dividing the first device part and the second device part;

the first device portion includes:

the second device portion includes:

12. The inverter panel according to claim 11,

a first panel intake part through which air flows into the first inverter housing part is formed on a side of the first inverter housing part facing in the same direction as a side of the inverter device on which the first intake part is formed,

13. The inverter panel according to claim 12,

a second panel intake part through which air flows into the second inverter housing part is formed on a side of the second inverter housing part facing in the same direction as the side of the inverter device on which the first intake part is formed,

one or more second panel exhaust portions that exhaust air inside the second inverter housing portion are formed on the other side of the second inverter housing portion that faces the same direction as the other side of the inverter device on which the first exhaust portion is formed.

14. A power conversion apparatus comprising the inverter panel of claim 5 or 11,

the inverter includes a power input panel that is located adjacent to one side of the inverter panel, receives the direct current from the outside, and supplies the direct current to the inverter panel.

15. The power conversion apparatus according to claim 14,

includes a power output panel positioned adjacent to the other side of the inverter panel, receiving the converted alternating current from the inverter panel and outputting the same to the outside.