JP6470193B2 - Power conversion device and assembly method thereof - Google Patents

Description

  The present invention relates to a power conversion device that converts electric power input from a power source side into AC power and outputs the AC power to a system, and an assembly method thereof.

  2. Description of the Related Art Conventionally, there has been provided a power converter for converting power generated by, for example, solar power generation or wind power generation on the power source side into AC power and connecting it to a power company transmission line.

  FIG. 1 shows an example of a basic circuit configuration of such a power conversion device 100. The circuit configuration of the present invention, which will be described later, is the same as the circuit configuration. Therefore, in this specification, the circuit configuration diagram of FIG. 1 is represented by the power conversion device 1 of the present invention and the conventional power conversion device 100. It shall be used in common.

  The power converter 100 includes a rectifier 12 that rectifies input power connected to an input terminal unit 11 on the power supply side, a zero-phase current transformer 13 connected to a rear stage side of the rectifier 12, and power converted into direct current. Electrolytic capacitor 14 for smoothing, an intelligent power module (hereinafter simply referred to as a power module) 15 for converting DC power into three-phase AC power by various switching elements connected to the subsequent stage of electrolytic capacitor 14, and power A reactor 16 and a capacitor 17 constituting an LC circuit connected to the rear side of the module 15, a shunt resistor 18 for detecting a current of each phase connected to the rear side of the LC circuit, and a rear side of the shunt resistor 18. Noise filter 19 and a system-side electromagnetic switch (system-side relay) connected in parallel to the downstream side of the noise filter 19. Circuit) 20a and a self-supporting electromagnetic switch (self-supporting relay circuit) 20b, a system-side output terminal portion 21a connected to a power transmission line of a power company connected to the rear side of the system-side electromagnetic switch 20a, and a self-supporting side A self-supporting output terminal 21b connected to the rear side of the electromagnetic switch 20b and a control board 22 on which various controllers for controlling the power module 15 are mounted. In addition, the block shown with the symbol CT in a figure is a current transformer inserted as needed.

  The power conversion device 100 having the above-described configuration is a large-scale device that can be as large as several hundreds of kilograms (in some cases, about 300 kilograms), and each component is relatively large and heavy. For this reason, it is difficult to automate and assemble such a power conversion device 100 on a production line, and it has been a common practice to incorporate each component into the device housing one by one manually by an operator. There was a problem that the workability of the assembly work was poor.

  In addition, this type of power conversion device has a large number of heating elements in the components and also generates high-frequency noise, etc., so the location of each component in the device housing is minimized so that the influence between the components is minimized. Need to be determined. For this reason, it is not possible to perform assembly such as sequentially arranging components that are easy to place in an easy-to-place place in the apparatus housing, which also causes a reduction in workability of the assembly work.

  By the way, there exists a power supply device of patent document 1 as what devised the arrangement structure of a component.

  In this power supply device, a high frequency power supply circuit composed of a rectifier circuit, a first DC power supply circuit, a second DC power supply circuit, a drive circuit, and a high frequency circuit is mounted on one rectangular plate-like printed board, and is made of metal. It is housed in a shield case. The shield case is formed in a rectangular box shape that is open on one side, and includes a body that stores a printed circuit board and a cover that is coupled to the body so as to close the opening surface of the body.

  The printed circuit board is formed with a narrow notch that extends from a substantially central portion of one of the four sides to a side opposite to the one side. The rectifier circuit and the first notch are formed in a first region on the left side of the notch. The circuit component excluding the first capacitor in the DC power supply circuit and the circuit component excluding the second capacitor in the second DC power supply circuit are mounted, and the high-frequency circuit and the drive are mounted in the second region on the right side of the notch The circuit is mounted, and the first capacitor and the second capacitor C2 are mounted at a position in the vicinity of the narrow third region interposed between the second region and the first region. Yes.

Japanese Patent No. 3484975

  As described in Patent Document 1, it has been generally known that a plurality of regions are formed on a single printed circuit board, and each component is distributed and arranged in each region in consideration of the effects of heat generation, high-frequency noise, and the like. Has been done.

  However, the one described in Patent Document 1 is not changed in that each component is directly incorporated on the printed circuit board, and each component is large and heavy like the power converter. Has the problem that the workability of the assembly work is poor.

  The present invention was devised to solve such problems. The purpose of the present invention is to improve the workability of assembly work by attaching assembly members for assembly to each component in advance. It is to provide a conversion device and an assembly method thereof.

In order to solve the above problems, a power conversion device of the present invention is a power conversion device that converts power input from a power source side into AC power and outputs the power, and a power module to which a first assembly member is attached; A reactor connected to a rear stage side of the power module and constituting a filter circuit to which a second assembly member is attached. The first assembly member of the power module includes the reactor and the second assembly member To form a first module body , and the first module body is accommodated in an apparatus housing. The apparatus housing has a cooling fan installed on one surface and a surface facing the cooling fan. vent hole is provided, the first assembly member in cross section is formed in a substantially C-channel shape, it is formed as separate members and the cooling fan

According to this configuration, the power module and the reactor are integrally assembled by attaching assembly members in advance to the power module and the reactor, which are components of the power conversion device, and connecting the assembly members to each other. A first module body is formed. That is, the power module and the reactor can be assembled together in a predetermined positional relationship only by connecting the assembly members. And the inside of an apparatus housing | casing can be cooled with cooling air.

  According to the power converter of the present invention, the capacitor constituting the filter circuit to which the third assembly member is attached, the shunt resistor for detecting the current of the filter circuit to which the fourth assembly member is attached, An electromagnetic switch that opens and closes an output to which an assembly member is attached, wherein the third assembly member of the capacitor includes the shunt resistor and is connected to the fourth assembly member, and the electromagnetic switch The fifth assembly member includes the capacitor and is connected to the third assembly member to form a second module body.

  According to this configuration, the assembly members are attached in advance to the capacitors, the shunt resistor, and the electromagnetic switch, which are the components of the power conversion device, and the assembly members are sequentially connected to each other, whereby the capacitor, the shunt resistor, and the electromagnetic switch are connected. The second module body is formed by assembling the switch together. That is, the capacitor, the shunt resistor, and the electromagnetic switch can be assembled together in a predetermined positional relationship only by connecting the assembly members.

  Moreover, according to the power converter device of this invention, it is good also as a structure by which the said 1st module body and the said 2nd module body were installed adjacently and connected.

  By connecting the first module body and the second module body adjacent to each other, all of the power module, the reactor, the capacitor, the shunt resistor, and the electromagnetic switch can be assembled together in a predetermined positional relationship.

  The power converter according to the present invention further includes an electrolytic capacitor to which a sixth assembly member is attached, and the sixth assembly member of the electrolytic capacitor includes the first assembly member and the fifth assembly member. It is good also as a structure linked across.

  According to this configuration, the assembly member is attached in advance to the electrolytic capacitor that is a component of the power conversion device, and the assembly member is connected to the assembly member of the first module body and the second module body, respectively. Can be integrally assembled to each part of the first module body and each part of the second module body.

  Further, according to the power conversion device of the present invention, the first module body and the second module body are disposed on one side surface in the device housing, and the other surface facing the one side surface of the device housing is disposed on the device side surface. A control board that controls the whole may be disposed, and a shielding plate may be disposed between the control board, the power module, the electromagnetic switch, and the electrolytic capacitor.

  According to this configuration, the control board can be protected from the heating element.

  Further, according to the power conversion device of the present invention, the cooling fan includes a first cooling fan disposed opposite to the heat sink on which the power module is mounted, and a second cooling fan disposed opposite to the reactor. It is good also as a structure.

  According to this structure, the power module and reactor which are main heat generating bodies can be cooled effectively.

  Moreover, according to the power converter device of the present invention, the vent may be provided on both the control board side and the power module side via the shielding plate.

  According to this configuration, it is possible to efficiently cool the control board and other components including the power module.

  In addition, the method for assembling the power conversion device according to the present invention is a method for assembling the power conversion device that converts the power input from the power source side into AC power and sends it to the output side, and the first assembly member is attached. A power module, a reactor constituting a filter circuit to which a second assembly member is attached, a capacitor constituting the filter circuit to which a third assembly member is attached, a shunt resistor to which a fourth assembly member is attached, Using the electromagnetic switch to which the fifth assembly member is attached and the electrolytic capacitor to which the sixth assembly member is attached, the first assembly member of the power module is contained in the reactor and the second assembly is included. Connecting to a member to form a first module body; and An assembly member including the shunt resistor is connected to the fourth assembly member, and the fifth assembly member of the electromagnetic switch is connected to the third assembly member including the capacitor. Forming a body, connecting the first module body and the second module body adjacent to each other, connecting the sixth assembly member of the electrolytic capacitor to the first assembly member and the fifth assembly. And a step of connecting across the members.

  According to this method, it is possible to assemble the components in a predetermined positional relationship by simply connecting the assembly members attached to the components in a predetermined positional relationship. In this case, in the method of the present invention, for example, when the part B is arranged on the upper part of the part A, the shape of the assembly member attached to the part B is formed into a shape that can contain the part A. Thereby, since each component can be piled up and arranged in a nested structure using an assembly member, assembly workability improves markedly.

  According to the power conversion device and the assembly method of the present invention, the assembly members are respectively attached in advance to the respective components of the power conversion device, and the assembly members are sequentially assembled to each other. The component parts can be assembled together in a predetermined positional relationship. Therefore, even if each component is large and heavy, assembly workability can be improved.

It is a basic circuit block diagram of a power converter device. It is explanatory drawing which shows the exploded view of each component which comprises the power converter device of this invention, and the assembly procedure of each component. It is explanatory drawing of the assembly procedure of each component which comprises the power converter device of this invention. It is the schematic longitudinal cross-sectional view seen from the side in the state which raised the apparatus housing | casing after an assembly. It is the schematic cross-sectional view seen from the top in the state which raised the apparatus housing | casing after an assembly.

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

  As described above, the component configuration of the power conversion device 1 of the present invention is the same as the component configuration of the conventional power conversion device 100 shown in FIG. That is, the power conversion device 1 of the present invention includes an input terminal unit 11, a rectifier 12, a zero-phase current transformer 13, an electrolytic capacitor 14, a power module 15, a reactor 16 and a capacitor 17 constituting an LC circuit, a shunt resistor 18, noise A filter 19, a system side electromagnetic switch (system side relay circuit) 20 a, a self-supporting side electromagnetic switch (self-supporting side relay circuit) 20 b, a system side output terminal unit 21 a, a self-supporting side output terminal unit 21 b, and a control board 22 are provided. These components are assembled together and contained in the apparatus housing 40.

  FIG. 2 is an explanatory view showing the components constituting the power conversion device 1 shown in FIG. 1 in an exploded manner. FIG. 2 also shows the procedure for assembling the components.

  The present embodiment is characterized in that an assembly member is attached in advance to each component of the power conversion device 1. The assembly member is also characterized in that, for example, when the component B is arranged on the upper part of the component A, the shape of the assembly member attached to the component B is formed into a shape that can contain the component A. doing.

  Hereinafter, each component will be specifically described with reference to FIG. In the following description, for convenience of explanation, the state shown in FIG. 2 will be described as viewed from the front, but the actual finished product is viewed from the side (side view).

  The power module 15 is mounted on the heat sink 25, and the first assembly member 31 is attached to the lower surface of the heat sink 25. The first assembly member 31 extends downward from both the left and right ends when viewed from the front side of the support plate 31a that supports the heat sink 25 and the front side of the support plate 31a (the direction toward the plane of FIG. 2; the same applies hereinafter). Leg plates 31b and 31c, and one leg plate 31c is provided with a mounting rib plate 31d extending inward from the lower end thereof. That is, the first assembly member 31 has a substantially C channel shape in the longitudinal section viewed from the front side. Moreover, the length of the leg plates 31b and 31c is formed to a length that can contain a reactor 16 described later.

  A second assembly member 32 is attached to the lower surface of the reactor 16. The second assembly member 32 includes a support plate 32a that supports the reactor 16, and leg plates 32b and 32c that extend downward from the left and right sides of the support plate 32a.

  A third assembly member 33 is attached to the lower surface of the capacitor 17. The third assembly member 33 includes a support plate 33a that supports the capacitor 17, and leg plates 33b and 33c that extend downward from both ends in the left-right direction when viewed from the front side of the support plate 33a. 33c are provided with mounting rib plates 33d, 33e extending inward from the lower end thereof. That is, the third assembly member 33 is formed in a substantially C channel shape with a lip in a longitudinal section viewed from the front side. Moreover, the length of the leg plates 33b and 33c is formed such that the shunt resistor 18 described later can be included.

  A fourth assembly member 34 is attached to the lower surface of the shunt resistor 18. The fourth assembly member 34 includes a support plate 34a that supports the shunt resistor 18, and leg plates 34b and 34c that extend downward from both ends in the left-right direction when viewed from the front side of the support plate 34a. That is, the fourth assembly member 34 has a substantially C channel shape in a longitudinal section viewed from the front side.

  A fifth assembly member 35 is attached to the lower surfaces of the electromagnetic switches 20a and 20b. The fifth assembly member 35 includes a support plate 35a that supports the electromagnetic switches 20a and 20b, and leg plates 35b and 35c that extend downward from both ends in the left-right direction when viewed from the front side of the support plate 35a. The leg plates 35b and 35c are provided with mounting rib plates 35d and 35e extending inwardly from the lower ends thereof. That is, the fifth assembly member 35 is formed in a substantially C channel shape with a lip in a longitudinal section viewed from the front side. Further, the length of the leg plates 35b and 35c is formed such that the capacitor 17 can be included.

  A sixth assembly member 36 is attached to the lower surface of the electrolytic capacitor 14. The sixth assembly member 36 includes a support plate 36a that supports the electrolytic capacitor 14, and leg plates 36b and 36c that extend downward from both ends in the left-right direction when viewed from the front side of the support plate 36a. 36b and 36c are provided with mounting rib plates 36d and 36e extending inward from the lower end thereof. That is, the sixth assembly member 36 is formed in a substantially C channel shape with a lip in a longitudinal section viewed from the front side. Further, the length of the leg plates 36b, 36c is set to the length of the other assembly member to be placed. That is, the length is set such that the electrolytic capacitor 14 is substantially horizontal when placed on another assembly member.

  Although not shown, the rectifier 12 is also mounted on the heat sink 25. Further, the current transformer CT is disposed on the rear side of the shunt resistor 18 in FIG. 2 and mounted on the fourth assembly member 34. Further, the noise filter 19 is not shown.

  As shown in FIG. 2, the power conversion device 1 according to the present embodiment is assembled by sequentially assembling each component to which the assembly members 31 to 36 are attached using the assembly members 31 to 36. It has the characteristic in the point which can manufacture the power converter device 1 of a form. Hereinafter, the assembly procedure will be described with reference to the explanatory diagrams of the assembly procedure shown in FIGS. 2 shows the first half of the assembly procedure, and FIG. 3 shows the second half of the assembly procedure.

  First, the power module 15 is placed and fixed on the reactor 16. That is, the first assembly member 31 of the power module 15 includes the reactor 16 and covers the second assembly member 32, and the leg plate 31b of the first assembly member 31 and the leg plate 32b of the second assembly member 32 are bolts, nuts, and the like. The mounting rib piece 31d of the first assembly member 31 and the support plate 32a of the second assembly member 32 are connected by a connecting tool such as a bolt and a nut, and the power module 15 and the reactor 16 Form a first module body 1A.

  At this time, as described above, the length of the leg plates 31b and 31c of the first assembly member 31 is formed so as to be able to contain the reactor 16, so that the first and second assembly members 31 and 32 are connected to each other. The power module 15 and the reactor 16 can be assembled together in a predetermined positional relationship only by assembling (coupling by bolts and nuts).

  Next, the capacitor 17 is placed and fixed on the shunt resistor 18. That is, the third assembly member 33 of the capacitor 17 includes the shunt resistor 18 and covers the fourth assembly member 34, and supports the mounting rib plates 33 d and 33 e of the third assembly member 33 and the fourth assembly member 34. The plate 34a is connected with a connecting tool such as a bolt and a nut. Next, the electromagnetic switches 20 a and 20 b are placed and fixed on the capacitor 17. That is, the fifth assembly member 35 of the electromagnetic switches 20a, 20b is covered with the third assembly member 33 including the capacitor 17, and both the mounting rib plates 35d, 35e of the fifth assembly member 35 and the third assembly member are covered. The support plate 33a of 33 is connected with a connecting tool such as a bolt and a nut to form a second module body 1B in which the shunt resistor 18, the capacitor 17, and the electromagnetic switches 20a and 20b are assembled together.

  At this time, as described above, the lengths of both leg plates 33b and 33c of the third assembly member 33 are formed such that the shunt resistor 18 can be included, and the both leg plates 35b and 35c of the fifth assembly member 35 are formed. Since the length is formed such that the capacitor 17 can be included, the assembly of the third and fourth assembly members 33 and 34 (connection by bolts and nuts), and the third and fifth assembly members 33, The shunt resistor 18, the capacitor 17, and the electromagnetic switches 20 a and 20 b can be assembled together in a predetermined positional relationship only by assembling 35 (coupling by bolts and nuts).

  Next, the first module body 1A and the second module body 1B are arranged adjacently and connected to form a third module body 1C. The connection at this time connects adjacent assembly members with connecting tools such as bolts and nuts. In the example shown in FIG. 2, the first module body 1 </ b> A is disposed on the right side and the second module body 1 </ b> B is disposed on the left side thereof, so that the left leg plate 32 b and the fourth assembly member 34 of the second assembly member 32 are arranged. The right leg plate 34c is connected to the left leg plate 31b of the first assembly member 31, the right leg plate 33c of the third assembly member 33, and the right leg plate 35c of the fifth assembly member 35 by connecting the right leg plate 34c with a connector such as a bolt and a nut. Are connected by a connecting tool such as a bolt and a nut. This arrangement position may be reversed left and right.

  Next, the sixth assembly member 36 of the electrolytic capacitor 14 is placed and fixed on the third module body 1C integrally formed in this way. That is, the sixth assembly member 36 is disposed across the first assembly member 31 and the fifth assembly member 35 so that the electrolytic capacitor 14 is fitted between the heat sink 25 and the electromagnetic switches 20a and 20b. The mounting rib plate 36e on the right side of the sixth assembly member 36 is connected to the support plate 31a of the first assembly member 31 with a connector such as a bolt and a nut, and the mounting rib plate 36d on the left side of the sixth assembly member 36 is connected. Are connected to the support plate 35a of the fifth assembly member 35 with a connecting tool such as a bolt and a nut to form a fourth module body 1D. At this stage, all the components other than the control board 22 are assembled.

  According to this assembling process, the components can be integrally assembled in a predetermined positional relationship by simply connecting the assembly members 31 to 36 attached to the components in a predetermined positional relationship. In this case, according to the present embodiment, for example, when the part B is arranged on the upper part of the part A, the shape of the assembly member attached to the part B is formed so as to include the part A. Since each component can be stacked and arranged in a nested structure using an assembly member, the assembling workability is remarkably improved.

  Thereafter, as shown in FIG. 3, the fourth module body 1 </ b> D is connected to the apparatus housing 40 by covering the upper surface of the fourth module body 1 </ b> D with a box-shaped device housing 40 whose bottom surface is opened. .

  Specifically, in the state shown in FIG. 3, the apparatus housing 40 has a left side as a lower surface 41, a right side as an upper surface 42, a back side as a first side 43, and an upper side as a second side. The side surface 44, the surface on the front side of the paper (however, FIG. 3 is a cross-sectional view, the front side surface is not shown; see FIG. 5 described later), the third side surface 45, and the lower surface is the fourth side surface. 46, the bottom surface of the support plate 32a of the second assembly member 32 that constitutes the first module body 1A and the support plate 34a of the fourth assembly member 34 that constitutes the second module body 1B are provided on the apparatus housing 40. The fourth side surface 46 is configured. That is, the leg plate 32c of the second assembly member 32 and the leg plate 34b of the fourth assembly member 34 are connected to the peripheral edge of the opening portion of the apparatus housing 40 by a connector such as a bolt and a nut.

  Here, although not shown, the upper second side surface 44 is a door body that can be opened and closed, and the control board 22 is attached to the inside of the door body.

  Next, wiring or the like is applied in this state, and the apparatus housing 40 is rotated 90 degrees so that the lower surface 41 is raised and the final product in the state shown in FIGS. 4 and 5 is completed. Note that wiring and the like may be performed in this raised state. 4 is a schematic longitudinal sectional view of the power conversion device 1 after being raised (that is, the device housing 40) as viewed from the side, and FIG. 5 is a diagram showing the power conversion device 1 after being raised (that is, the device housing 40). It is the schematic cross-sectional view which looked at the apparatus housing | casing 40) from the upper surface side. That is, FIG. 4 is a schematic cross-sectional view along the line AA in FIG.

  In such a configuration, a shielding plate 47 is disposed in the apparatus housing 40 between the control board 22, the power module 15, the electromagnetic switches 20 a and 20 b, and the electrolytic capacitor 14. The shielding plate 47 is arranged in parallel with the control board 22. Thereby, the control board 22 can be protected from heating elements such as the power module 15, the reactor 16, the electromagnetic switches 20 a and 20 b, and the electrolytic capacitor 14.

  Further, the apparatus housing 40 is provided with a cooling fan 61 on the third side face 45, and vent holes 48 and 49 are provided on the first side face 43 opposed to the cooling fan 61. Further, a vent hole 48 is also provided in the third side surface 45 where the cooling fan 61 is installed. According to this configuration, the inside of the apparatus housing 40 can be cooled by the cooling air.

  In this case, in the present embodiment, the cooling fan 61 includes a first cooling fan 61a that is disposed to face the heat sink 25 on which the power module 15 is mounted, and a second cooling fan 61b that is disposed to face the reactor 16. Has been. The cooling fans 61 a and 61 b are attached to openings 45 a and 45 b formed in the third side surface 45. According to this structure, the power module 15 and the reactor 16 which are main heat generating bodies can be cooled effectively.

  Further, in the present embodiment, the air holes 48 are divided into the air holes 48 a provided on the control board 22 side and the air holes 48 b provided on the power module 15 side through the shielding plate 47. ing. The vent hole 49 is arranged so as to face the reactor 16. According to this arrangement configuration, the heat in the housing can be efficiently discharged by dividing the control board 22 into other components including the power module 15 and the reactor 16.

  In the above-described embodiment, the air holes 48 and 49 are provided on the side surface of the apparatus housing 40. However, the air holes 48 and 49 may be provided on the upper surface 42 and the lower surface 41 of the apparatus housing 40. Also, a plurality of first cooling fans 61a and second cooling fans 61b may be installed as necessary. In the above embodiment, two first cooling fans 61a are arranged along the height direction of the heat sink 25, and one second cooling fan 61b is arranged opposite to the reactor 16 in the center. Yes.

  Furthermore, in the above-described embodiment, each assembly member is connected by a connecting tool such as a bolt and a nut, but each assembly member may be connected by, for example, welding or the like. You may comprise so that each assembly member may be connected suitably.

  The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is set forth in the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Power converter 1A 1st module body 1B 2nd module body 1C 3rd module body 1D 4th module body 11 Input terminal part 12 Rectifier 13 Zero phase current transformer 14 Electrolytic capacitor 15 Power module 16 Reactor 17 Capacitor 18 Shunt resistance 19 Noise filter 20a System side electromagnetic switch (system side relay circuit)
20b Independent electromagnetic switch (independent relay circuit)
21a System side output terminal portion 21b Self-supporting side output terminal portion 22 Control board 25 Heat sink 31 First assembly member 32 Second assembly member 33 Third assembly member 34 Fourth assembly member 35 Fifth assembly member 36 Sixth assembly member 40 Device housing Body 41 Lower surface 42 Upper surface 43 First side surface 44 Second side surface (other side surface)
45 3rd side 46 4th side (one side)
47 Shielding plate 48, 49 Ventilation hole 61 Cooling fan 61a First cooling fan 61b Second cooling fan

Claims (8)

A power conversion device that converts power input from the power source side into AC power and outputs the power,
A power module having a first assembly member attached thereto;
A reactor connected to a rear stage side of the power module and constituting a filter circuit to which a second assembly member is attached,
The first assembly member of the power module encloses the reactor and is connected to the second assembly member to form a first module body ;
The first module body is accommodated in an apparatus housing,
The device housing is provided with a cooling fan on one surface, and a vent hole is provided on a surface facing the cooling fan,
The power converter according to claim 1, wherein the first assembly member has a substantially C-channel cross section and is formed of a member different from the cooling fan . The power conversion device according to claim 1,
A capacitor constituting the filter circuit, to which a third assembly member is attached;
A shunt resistor for detecting a current of the filter circuit, to which a fourth assembly member is attached;
An electromagnetic switch that opens and closes an output to which the fifth assembly member is attached, and
The third assembly member of the capacitor includes the shunt resistor and is connected to the fourth assembly member, and the fifth assembly member of the electromagnetic switch includes the capacitor and is connected to the third assembly member. And a second module body is formed. The power conversion device according to claim 2,
The power conversion device, wherein the first module body and the second module body are adjacently connected to each other. The power conversion device according to claim 3,
An electrolytic capacitor to which the sixth assembly member is attached;
The power converter according to claim 6, wherein the sixth assembly member of the electrolytic capacitor is connected across the first assembly member and the fifth assembly member. The power conversion device according to claim 4,
It said first module member and said second module member is disposed on one side of the device housing,
A control board that controls the entire apparatus is disposed on the other side surface of the apparatus housing that faces the one side surface.
A power conversion device, wherein a shielding plate is disposed between the control board, the power module, the electromagnetic switch, and the electrolytic capacitor. The power conversion device according to claim 5 ,
The said cooling fan is provided with the 1st cooling fan arrange | positioned facing the heat sink with which the said power module is mounted, and the 2nd cooling fan arrange | positioned facing the said reactor, The power converter device characterized by the above-mentioned. The power conversion device according to claim 5 or 6 , wherein
The power conversion device according to claim 1, wherein the vent hole is provided on both the control board side and the power module side via the shielding plate. A method for assembling a power converter that converts power input from the power source side into AC power and sends it to the output side,
A power module having a first assembly member attached thereto;
A reactor constituting a filter circuit, to which a second assembly member is attached;
A capacitor constituting the filter circuit, to which a third assembly member is attached;
A shunt resistor having a fourth assembly member attached thereto;
An electromagnetic switch to which a fifth assembly member is attached;
An electrolytic capacitor to which a sixth assembly member is attached,
Forming the first module body by enclosing the first assembly member of the power module, enclosing the reactor and connecting the first assembly member to the second assembly member;
The third assembly member of the capacitor is connected to the fourth assembly member including the shunt resistor, and the fifth assembly member of the electromagnetic switch is included in the third assembly member including the capacitor. Connecting to form a second module body;
The first module body and the second module body are disposed adjacent to each other and connected;
Connecting the sixth assembly member of the electrolytic capacitor across the first assembly member and the fifth assembly member, and assembling the power conversion device.

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