Power conversion device

Abstract

To provide a power conversion device that is compact and can improve heat dissipation efficiency.SOLUTION: A power conversion device 200 includes a housing 210 in which electronic components are housed and performs power conversion. A fan box 240 housing a blower fan 243 is provided on the bottom surface 211 of the housing 210, and a plurality of reactors 250 are arranged in a staggered pattern near an exhaust port 242 of the fan box 240.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a power conversion device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, power conversion devices, which are inverters that convert unstable electricity (DC power) generated by solar panels, for example, into stable electricity (AC power) that can be used in homes, buildings, factories, etc., have been widely used.

[0003] For example, Patent Document 1 discloses that in a switch module of a power conversion device, the positive and negative power supply bus bars are provided with flat plate portions whose flat surfaces face each other to form a parasitic capacitance, and this capacitance effect reduces the inductance of the power supply bus bars, and the flat plate portions increase the heat dissipation area, improving the heat dissipation effect of the power supply bus bars. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-55782 Summary of the Invention [Problem to be solved by the invention]

[0005] Power conversion devices include multiple reactors in filter circuits, etc. When the power conversion device is in operation, the reactors generate a lot of heat, so some kind of heat dissipation method is required. One way to address this is to install the reactors outside the housing of the power conversion device for air cooling.

[0006] However, in consideration of air flow and radiant heat, when there are multiple reactors, the gaps between the reactors need to be wide for effective air cooling, but widening the gaps between the reactors hinders the compactness of the power conversion device. In other words, there is a trade-off between efficient heat dissipation and compactness of the device.

[0007] The present invention has been made in view of the above circumstances, and has as its object to provide a power conversion device that is compact and can dissipate heat efficiently. [Means for solving the problem]

[0008] The power conversion device of the present invention has a housing in which electronic components are housed and performs power conversion, wherein a fan box containing a blower fan is provided on the outer surface of the housing, and a plurality of reactors are arranged in a staggered pattern near the exhaust port of the fan box. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a power conversion device that is compact and can achieve efficient heat dissipation. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is an illustrative diagram showing an example of a converter integrated unit according to an embodiment of the present invention. [Figure 2] 10 is a diagram showing a state in which the top power conversion device has been removed from the frame of the conversion device assembly. FIG. [Figure 3] FIG. 10 is a perspective view showing a flat frame of a frame body of a converter assembly. [Figure 4] FIG. 2 is a perspective view showing a power converter of the converter integrated body. [Figure 5] FIG. 2 is a perspective view showing the lower side of the power converter of the converter integrated unit. [Figure 6] FIG. 2 is a side view showing a side of the power converter of the converter integrated unit. [Figure 7]FIG. 2 is a perspective view showing a sliding portion of a power converter of the converter integrated body. [Figure 8] FIG. 10 shows the converter assembly after assembly is complete. [Figure 9] 10 is a diagram showing the positional relationship between the sliding portion and the guide rail when the converter assembly is completely assembled. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings showing embodiments thereof.

[0012] Fig. 1 is an illustrative diagram showing an example of a converter integrated body 1 according to this embodiment. Fig. 1A is a front view of the converter integrated body 1, and Fig. 1B and Fig. 1C are perspective views of the converter integrated body 1 from different directions.

[0013] The converter integrated body 1 according to this embodiment includes a frame body 100, and a plurality of power converters 200, which are so-called PCSs (Power Conditioning Systems), are integrated in the frame body 100. The plurality of power converters 200 are integrated at equal intervals with their thickness direction aligned vertically.

[0014] The frame 100 extends in the vertical direction, and its upper part is covered by a roof portion 300. The roof portion 300 is roughly rectangular in plan view, and its upper surface slopes downward from the front to the back of the conversion device assembly 1. Furthermore, the four corners of the roof portion 300 are cut out, for example, in a rectangular shape.

[0015] The frame 100 also includes four columns 10 arranged to form a rectangle in plan view. That is, the four columns 10 are arranged at positions corresponding to the four corners of the roof 300. Each column 10 is made of, for example, stainless steel, extends in the vertical direction, and has the same length. Each column 10 is L-shaped in cross section and is arranged to protrude toward the outside of the frame 100. Specifically, in the rectangle formed in plan view by connecting the columns 10 to each other in the left-right and front-back directions, the recesses of the columns 10 on the diagonal lines face each other.

[0016] The columns 10 are connected to each other at their upper ends by an upper end horizontal member 20 (horizontal member), and at their lower ends by a lower end horizontal member 30.

[0017] The upper-end cross-section of the upper-end cross-member 20 is L-shaped with its upper end bent inward of the frame body 100. The upper-end cross-member 20 is bridged between columns 10 corresponding to each other in the left-right direction and between columns 10 corresponding to each other in the front-back direction. For example, the ends of the upper-end cross-member 20 are welded to the columns 10. The upper-end cross-member 20 and the upper ends of the two columns 10 connected by such upper-end cross-member 20 are flush with each other. Note that the upper-end cross-member 20 connecting columns 10 corresponding to each other in the front-back direction has a larger vertical dimension than the upper-end cross-member 20 connecting columns 10 corresponding to each other in the left-right direction.

[0018] The lower end cross member 30 has an L-shaped cross section with its lower end bent inside the frame body 100, and like the upper end cross member 20, it is supported horizontally between columns 10 corresponding to each other in the left-right direction and between columns 10 corresponding to each other in the front-to-back direction.

[0019] FIG. 2 is a diagram showing a state in which the uppermost power converter 200 is removed from the frame 100 of the converter integrated body 1. As shown in FIG. In the frame 100, a plurality of flat frames 40 are horizontally supported between a pair of columns 10 corresponding to each other in the front and back directions. The flat frames 40 are arranged at equal intervals in the vertical direction. Each power conversion device 200 is supported on two flat frames 40 corresponding to each other in the left and right direction.

[0020] In the following, for ease of explanation, the flat frame 40 that is laid horizontally between the left-side columns 10 (a pair of columns) will be referred to as the flat frame 40a (first frame), and the flat frame 40 that is laid horizontally between the right-side columns 10 (another pair of columns) that face the left-side columns 10 will be referred to as the flat frame 40b (second frame).

[0021] Fig. 3 is a perspective view showing the flat frame 40a of the frame body 100 of the converter assembly 1. For ease of explanation, Fig. 3 shows by dashed lines a pair of columns 10 corresponding to each other in the front and back directions, across which the flat frame 40a is horizontally supported.

[0022] The flat frame 40a is made of, for example, stainless steel, and protrudes from the pair of columns 10 to the inside of the frame body 100, i.e., to the right side. The flat frame 40a has a rectangular flat plate portion 401 extending in the front-to-back direction, and side walls are connected to the four edges of the flat plate portion 401, extending perpendicularly downward relative to the flat plate portion 401. That is, a side wall 403 is connected to the left long side, a side wall 404 is connected to the right long side, and front side walls 402 are connected to both short sides in the front-to-back direction.

[0023] Of the four side walls 402 to 404, the other side walls 402, 403 except for the side wall 404 on the right long side have the same vertical dimension. The lower end of the side wall 404 on the right long side is bent inward of the flat frame 40a, i.e., bent to the left.

[0024] The flat frame 40b has a shape corresponding to that of the flat frame 40a. That is, the flat frame 40b also has a flat plate portion 401, but of the four edges of the flat plate portion 401, the lower end of the side wall on the left long side is bent inward, i.e., to the right, of the flat frame 40b. The other shapes of the flat frame 40b are the same as those of the flat frame 40a, and detailed explanations will be omitted.

[0025] Guide rails 50 (rail members) are provided on the upper surface of the flat plate portion 401 of the flat frame 40 to guide the sliding of the power converter 200 when assembling the converter integrated body 1. More specifically, the guide rail 50a is provided on the flat plate portion 401 of the flat frame 40a, and the guide rail 50b is provided on the flat plate portion 401 of the flat frame 40b. The guide rails 50a and 50b are made of stainless steel, for example. Hereinafter, the guide rails 50a and 50b are also referred to as guide rails 50.

[0026] The guide rail 50a has an L-shape in vertical cross section and extends in the front-to-back direction (see FIG. 2). That is, the guide rail 50a has a shape in which a rectangular plate material is bent in two parts in the width direction, with one part fixed on the flat plate portion 401 of the flat frame 40a and the other part connected to the left long side of the first part and above. Through holes are formed at both ends of the other part. The guide rail 50a is arranged so that its front and right ends are aligned with the front and right ends of the flat frame 40a (flat plate portion 401).

[0027] The length of the guide rail 50a is equal to or greater than the dimension of the power conversion device 200 in the front-to-back direction, and is shorter than the length of the flat plate portion 401. For example, the length of the guide rail 50a is slightly longer than the dimension of the power conversion device 200 in the front-to-back direction. Note that a stopper may be provided at the other end of the guide rail 50a to prevent the power conversion device 200 from moving further forward.

[0028] The guide rail 50b has a shape corresponding to that of the guide rail 50a. The guide rail 50b has an L-shape in vertical cross section and extends in the front-to-back direction (see FIG. 2). The guide rail 50b has the same length as the guide rail 50a. Specifically, the guide rail 50b has a shape in which a rectangular plate material is bent into two parts in the width direction, one part of which is fixed onto the flat plate portion 401 of the flat frame 40b, and the other part is connected to the right long side of this part and above. Through holes are formed at both ends of the other part. The guide rail 50b is arranged in line with the front end and left end of the flat frame 40b (flat plate portion 401).

[0029] The roof portion 300 and the columns 10 and flat frames 40 in the frame body 100 are painted, but the guide rails 50 are not painted and are in an unpainted state.

[0030] Fig. 4 is a perspective view showing the power conversion device 200 of the conversion device integrated body 1, and Fig. 5 is a perspective view showing the lower side of the power conversion device 200 of the conversion device integrated body 1. The power conversion device 200 converts, for example, DC power input from the outside into AC power. The power converter 200 includes a housing 210 and a cover 220 .

[0031] The housing 210 houses electronic components such as a DC-DC converter, a relay, a reactor, a control board, etc. The housing 210 has a flat rectangular parallelepiped shape, and one main surface on the upper side is open so that the electronic components can be put in and taken out. The lid 220 has a rectangular plate shape, and covers the housing 210 from the one main surface side of the housing 210.

[0032] The housing 210 has a front sidewall 215 on the front side, a left sidewall 213 and a right sidewall 214 adjacent to the front sidewall 215 in the left-right direction and facing each other, and a rear sidewall 212 facing the front sidewall 215. The front sidewall 215 and the rear sidewall 212 are rectangular plate shapes extending in the left-right direction, and the left sidewall 213 and right sidewall 214 are rectangular plate shapes extending in the front-to-back direction.

[0033] An indicator 216 such as an LED is provided on the front wall 215. A control terminal 213a for controlling the electronic components housed in the housing 210 is provided on the left wall 213. An AC terminal 212a and a DC terminal 212b for connecting to an external device are provided on the rear wall 212.

[0034] A fan box 240 that houses a blower fan 243 is protruded from the outer surface of the bottom, which is the other main surface of the housing 210, i.e., the underside 211 of the housing 210. The fan box 240 has a rectangular parallelepiped shape. Inside the fan box 240, a heat sink 244 for radiating heat generated by the electronic components and a blower fan 243 for blowing air to the heat sink 244 are provided.

[0035] The fan box 240 is provided on the underside 211 at a position closer to the front wall 215. More specifically, the fan box 240 is provided at a position that is the same distance from the left wall 213 and the right wall 214 in the left-right direction, and at a predetermined distance from the front wall 215 of the housing 210 towards the rear wall 212.

[0036] The fan box 240 has one surface parallel to the front wall 215 of the housing 210, and a plurality of intake ports 241 are formed on this surface, through which outside air flows into the fan box 240. A blower fan 243 is disposed in the fan box 240 near each intake port 241. Furthermore, an exhaust port 242 is formed on an opposite surface of the fan box 240 opposite the one surface, through which air sent by the blower fan 243 to the heat sink 244 is exhausted from the fan box 240. The exhaust port 242 is a rectangle that is long in the opposing direction (left-right direction) of the left side wall 213 and the right side wall 214. In other words, the intake port 241 and the exhaust port 242 are disposed opposite each other in the front-to-back direction, and the heat sink 244 is interposed between the blower fan 243 and the exhaust port 242.

[0037] Furthermore, a plurality of reactors 250 are provided on the lower surface 211 of the fan box 240. Each reactor 250 has an oval shape in cross section, and protrudes from the lower surface 211 from the inside of the housing 210 through the bottom of the housing 210.

[0038] Fig. 6 is a side view showing the side of the power conversion device 200 of the conversion device integrated body 1. For convenience, Fig. 6 shows the power conversion device 200 held in the frame body 100, with the table column 10 on the right side removed from the frame body 100.

[0039] The multiple reactors 250 are disposed on the lower surface 211 near the rear wall 212, and are disposed near the exhaust port 242 of the fan box 240. That is, the multiple reactors 250 are disposed in the blowing direction of the air discharged from the exhaust port 242. The multiple reactors 250 are disposed in a staggered pattern in the left-right direction along the exhaust port 242.

[0040] Each reactor 250 has a plurality of heat dissipation fins 251 at its lower end. Each heat dissipation fin 251 has a rectangular thin plate shape extending in the front-to-back direction, i.e., along the opposing direction of the air inlet 241 and the air outlet 242. The heat dissipation fins 251 are arranged side by side in the left-to-right direction, i.e., along the opposing direction of the left side wall 213 and the right side wall 214.

[0041] A fan box 240 and a plurality of reactors 250 are provided on the lower surface 211 of the housing 210 to protrude in the thickness direction of the housing 210, and the fan box 240 and the reactors 250 have the same dimension H from the lower surface 211 to their protruding ends (lower ends) (see Figure 6).

[0042] Furthermore, power conversion device 200 is provided with sliding portion 230 on each of left side wall 213 and right side wall 214 of housing 210. On left side wall 213, sliding portion 230 is provided from the lower end to the left edge of bottom surface 211, and on right side wall 214, sliding portion 230 is provided from the lower end to the right edge of bottom surface 211. That is, sliding portion 230 is provided on each of the lower corners of housing 210 formed by left side wall 213, right side wall 214 and bottom surface 211. Hereinafter, sliding portion 230 associated with left side wall 213 will be referred to as sliding portion 230a, and sliding portion 230 associated with right side wall 214 will be referred to as sliding portion 230b.

[0043] Fig. 7 is a perspective view showing the sliding portion 230a of the power converter 200 of the converter integrated unit 1. For ease of explanation, the housing 210 is shown by a dashed line in Fig. 7. As described above, the sliding portion 230a is provided on the left side wall 213 and extends in the front-to-back direction along the left side wall 213.

[0044] The sliding portion 230a has a fixed plate portion 231 (bent plate portion) fixed to the left side wall 213. The fixed plate portion 231 has a rectangular plate shape that is long in the front-to-back direction. A plurality of through holes 232 are formed in the center of the fixed plate portion 231, and the sliding portion 230a is fixed to the housing 210 (left side wall 213) using the through holes 232. In addition, a lower long side portion 231a of the fixed plate portion 231 is bent to the right along the corner formed by the left side wall 213 and the bottom surface 211. In other words, the fixed plate portion 231 covers from the lower end of the left side wall 213 to the left edge of the bottom surface 211.

[0045] Furthermore, in the sliding portion 230a, an overhanging plate 233 is connected to the upper long side of the fixed plate portion 231. The overhanging plate 233 overhangs from the fixed plate portion 231 perpendicularly to the fixed plate portion 231, and the end of the overhanging plate 233 is bent downward. In other words, the end of the overhanging plate 233 faces the fixed plate portion 231 at a distance. At the end of the overhanging plate 233, through holes 236 are formed at both ends in the front-to-back direction, and the remaining portion excluding these ends is cut away to form notches 234. The sliding portion 230a (power conversion device 200) is screwed to the guide rail 50a (frame body 100) using the through holes and through holes 236 of the guide rail 50a.

[0046] In the sliding portion 230a, rectangular plate-shaped claw portions 235 are connected to both short sides of the fixed plate portion 231. Each claw portion 235 is provided near the upper end and bent toward the end of the protruding plate 233. The fixed plate portion 231, the protruding plate 233, and the claw portions 235 are integrally formed.

[0047] The sliding part 230b has a fixed plate part (bent plate part) fixed to the right side wall 214 and corresponding to the fixed plate part 231 of the left side wall 213, and the lower long side part of this fixed plate part is bent to the left along the corner formed by the right side wall 214 and the lower surface 211. In other words, the fixed plate part of the sliding part 230b covers from the lower end part of the right side wall 214 to the right edge part of the lower surface 211. The other configuration of the sliding part 230b is the same as that of the sliding part 230a, and detailed description thereof will be omitted.

[0048] In power conversion device 200, housing 210 is made of a lightweight material with good thermal conductivity such as aluminum, and sliding part 230 is made of stainless steel or the like that has greater strength and hardness than housing 210. Furthermore, housing 210 is painted, but sliding part 230 is not painted and is in an unpainted state.

[0049] FIG. 8 is a diagram showing the converter assembly 1 after assembly is complete, and FIG. 9 is a diagram showing the positional relationship between the sliding portion 230 and the guide rail 50 when assembly of the converter assembly 1 is complete. For ease of explanation, Figure 8 shows only the upper part of the conversion device assembly 1, and Figure 9 shows only the sliding part 230a and the guide rail 50a, showing the state in which the sliding part 230a and the guide rail 50a are not screwed.

[0050] Hereinafter, a method for attaching the power converter 200 to the frame 100 will be described with reference to FIGS.

[0051] First, a forklift or an operator lifts one power converter 200 and places it on the top flat frames 40a, 40b. More specifically, the rear ends of the sliding sections 230a, 230b of the power converter 200 are placed within the guide rails 50a of the flat frames 40a and 40b, respectively, and then the power converter 200 is pushed in from the rear side.

[0052] To this end, the worker aligns the rear end portions of the sliding portions 230a, 230b of the power conversion device 200 with the front end portions of the corresponding guide rails 50a, 50b. Thus, the worker fine-tunes the position by moving the power conversion device 200 in the vertical and horizontal directions near the front side of the frame body 100, i.e., near the front end portions of the flat frames 40a, 40b (guide rails 50a, 50b).

[0053] When the rear ends of the sliding portions 230a, 230b of the power converter 200 are aligned with the front ends of the corresponding flat frames 40a, 40b by finely adjusting the position of the power converter 200 in this way, the power converter 200 is pushed to the rear. When the power converter 200 moves to the rear, the sliding portion 230a of the left side wall 213 slides on the guide rail 50a of the flat frame 40a, and the sliding portion 230b of the right side wall 214 slides on the guide rail 50b of the flat frame 40b.

[0054] For example, the power conversion device 200 is pushed in until the sliding portions 230a, 230b hit the stoppers provided at the rear ends of the guide rails 50a, 50b, and then, as described above, the sliding portions 230a, 230b are screwed to the guide rails 50a, 50b to fix the power conversion device 200 to the frame body 100.

[0055] When the attachment of the power converter 200 to the uppermost flat frames 40a, 40b is completed in the above manner, the power converter 200 is disposed in a position near the front side of the frame body 100, in other words, in a position near the front end of the flat frames 40a, 40b. At this time, the sliding portion 230a of the left side wall 213 of the power converter 200 is placed on the guide rail 50a of the flat frame 40a, and the sliding portion 230b of the right side wall 214 of the power converter 200 is placed on the guide rail 50b of the flat frame 40b.

[0056] The above-described operations are repeated until the power converter 200 is attached to the lowest flat frames 40a, 40b, and the assembly of the converter assembly 1 is thereby completed. When the assembly of the converter assembly 1 is completed, as described above, each power converter 200 is disposed near the front end of the flat frames 40a, 40b (see FIG. 6). In addition, as shown in FIG. 8, in the vertical direction, a gap G1 between the top power converter 200 and the upper-end horizontal member 20 on the front side of the frame body 100 is wider than a gap G2 between the power converters 200.

[0057] As described above, in the power conversion device 200 according to this embodiment, the multiple reactors 250 are arranged near the exhaust port 242 of the fan box 240. That is, the multiple reactors 250 are arranged in the direction in which the exhaust air is blown out from the exhaust port 242, and the multiple reactors 250 are arranged in a staggered pattern in the left-right direction along the exhaust port 242.

[0058] Therefore, in the power conversion device 200, the reactor 250 is forcibly air-cooled by the air discharged from the exhaust port 242 in addition to natural convection. Therefore, the reactor 250 can efficiently dissipate heat in the power conversion device 200. Furthermore, since the multiple reactors 250 are arranged in a staggered pattern, the air discharged from the exhaust port 242 can reach all of the reactors 250 without being obstructed. Therefore, the power conversion device 200 can be made more compact, and the reactor 250 can dissipate heat more efficiently.

[0059] Furthermore, as described above, in the power conversion device 200 according to this embodiment, the plurality of heat dissipation fins 251 of each reactor 250 extend along the opposing direction of the intake port 241 and the exhaust port 242, and the plurality of heat dissipation fins 251 are arranged side by side in the opposing direction of the left side wall 213 and the right side wall 214, i.e., in a direction intersecting the opposing direction.

[0060] Therefore, in the power conversion device 200, the air exhausted from the exhaust port 242 flows along the extension direction of each heat dissipation fin 251, and both sides of each heat dissipation fin 251 come into contact with the exhaust air, thereby further improving the efficiency of heat dissipation.

[0061] As described above, in the power converter 200 according to this embodiment, the fan box 240 and the reactor 250 have the same dimension H from the lower surface 211 to the protruding end (lower end).

[0062] Therefore, when the power conversion device 200 is placed on a flat surface such as the ground, a gap can be secured between the lower surface 211 of the housing 210 and the flat surface. This makes it easy to insert the forks of a forklift below the power conversion device 200, and makes it easy for a worker to reach below the power conversion device 200 and lift the power conversion device 200, thereby improving the workability in transporting the power conversion device 200.

[0063] As described above, in the power converter 200 according to this embodiment, the fan box 240 is provided at a position spaced a predetermined distance from the front wall 215 of the housing 210 toward the rear wall 212.

[0064] Therefore, a space S1 (see FIG. 6) can be secured on the front side of the fan box 240 of the power converter 200 in the next higher tier than the target tier on which the power converter 200 is being installed, i.e., near the front end of the flat frames 40a, 40b (guide rails 50a, 50b) related to the target tier. Therefore, when installing the power converter 200 on the flat frames 40a, 40b of the target tier, the installation is not hindered by the power converter 200 in the next higher tier that has already been installed, allowing for the above-mentioned fine adjustment of the position, improving workability.

[0065] As described above, in the power conversion device 200 according to this embodiment, the control terminal 213a for controlling the electronic components housed in the housing 210 is provided on the left side wall 213, i.e., on the side wall in a direction intersecting the opposing direction of the air inlet 241 and the air outlet 242. In other words, the control terminal 213a is provided on the side wall in a direction intersecting the blowing direction of the exhaust air from the air outlet 242.

[0066] Therefore, in the power conversion device 200, in order to connect to the control terminal 213a, the air exhausted from the exhaust port 242 is blocked from flowing into the collector board that will be disposed near the control terminal 213a, thereby preventing any damage to the collector board caused by such exhaust air.

[0067] As described above, in the power conversion device 200 according to this embodiment, the sliding portion 230 is made of a material that is stronger and harder than the housing 210, and the sliding portion 230 is not painted and is in an unpainted state.

[0068] Therefore, when the power conversion device 200 is attached to the flat frame 40, the sliding part 230 slides on the guide rail 50 of the flat frame 40, which prevents the sliding part 230 from being damaged, and also prevents the paint from peeling off, which would cause the device to look unattractive.

[0069] The technical features (constituent elements) described in this embodiment can be combined with each other, and by combining them, new technical features can be conceived. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the claims, not by the above meaning, and is intended to include all modifications within the meaning and scope of the claims.

[0070] Independent and dependent claims may be combined with each other in any and all combinations, regardless of the reference format. Furthermore, while the claims may be written in a format in which a claim references two or more other claims (multiple claim format), this is not a limitation. Multiple claims that reference at least one other multiple claim (multiple multiple claim format) may also be written. [Explanation of symbols]

[0071] 1: converter assembly, 10: column, 20: upper horizontal member, 30: lower horizontal member, 40, 40a, 40b: flat frame, 50, 50a, 50b: guide rail, 100: frame body, 200: power converter, 210: housing, 211: bottom surface (outer surface), 212: rear wall, 212a: AC terminal, 212b: DC terminal, 213: left side wall, 21 3a: control terminal, 214: right side wall, 215: front side wall, 230, 230a, 230b: sliding portion, 231: fixed plate portion (bent plate portion), 231a: long side portion, 240: fan box (storage box), 241: intake port, 242: exhaust port, 243: blower fan, 250: reactor, 251: heat dissipation fin, G1 to G4: gap, S1: space

Claims

1. A power conversion device that has a housing in which electronic components are housed and performs power conversion, The outer surface of the housing has A fan box containing a blower fan is provided. The power conversion device has a plurality of reactors arranged in a staggered pattern near the exhaust port of the fan box.

2. The power conversion device according to claim 1 , wherein the fan box and the reactor have the same dimensions from the outer surface in the thickness direction of the housing.

3. the fan box has an intake port facing the exhaust port, Each reactor has a plurality of fins extending along a direction in which the intake port and the exhaust port face each other, The power conversion device according to claim 1 , wherein the plurality of fins are arranged in parallel in a direction intersecting the opposing direction.

4. the fan box has an intake port facing the exhaust port, the housing has two side walls that face each other in the opposing directions of the intake port and the exhaust port, an AC terminal and a DC terminal are provided on one of the two side walls; The power conversion device according to claim 1 , wherein the fan box is disposed near the other side wall of the housing and spaced apart from the other side wall in the opposing direction.

5. The housing includes: two side walls that face each other in a direction in which the plurality of fins are arranged side by side; a control terminal for controlling the electronic component is provided on one of the two side walls; 4. The power converter according to claim 3, further comprising an AC terminal and a DC terminal on a side wall adjacent to said one side wall.

6. a bent plate portion that covers a corner formed by the two side walls and the outer surface of the housing, Each bending plate part is The housing is made of a material having a higher strength and hardness than the material of the housing, The power converter according to claim 5, which is in an unpainted state.

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