JP2018137918A - Electric power conversion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric power conversion device which facilitates downsizing while facilitating assembly.SOLUTION: An electric power conversion device 1 includes: a lamination body 2; a case 3; a compression member 4; and a support body 5. In the case 3, the lamination body 2 is disposed at the inner side. The compression member 4 is disposed at an end part of the lamination body 2 as seen in a lamination direction at the inner side of the case 3 and presses the lamination body 2 in the lamination direction. The support body 5 supports the compression member 4 from the opposite side of the lamination body 2 in the lamination direction. The case 3 has a base plate 31 and a support wall part 32. The base plate 31 faces the lamination body 2 in a direction orthogonal to the lamination direction. The support wall part 32 supports the lamination body 2 from the opposite side of the compression member 4 in the lamination direction. The support body 5 is a separate member from the case 3 and assembled to the base plate 31.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power conversion device having a laminate in which a semiconductor module and a cooling pipe are laminated.

  For example, as a power conversion device mounted on an electric vehicle, a hybrid vehicle, or the like, there is one having a laminated body in which a semiconductor module and a cooling pipe are laminated. For example, as disclosed in Patent Document 1, such a power conversion device has a structure in which a stacked body is pressed in a stacking direction by a pressing member in a case. In order to realize this pressurization structure, in the power conversion device disclosed in Patent Document 1, a pressurization member is disposed between the support portion provided in the case and the laminate. And the support part protrudes from the base plate which opposes the direction orthogonal to a lamination direction with respect to a laminated body in a case.

Japanese Patent Laid-Open No. 2015-201981

  However, in the above power converter, since the support portion protrudes from the base plate, the support portion may become an obstacle when assembling various components in the case. That is, for example, when a component such as a connector is assembled in the vicinity of a portion in the case where the support is provided, the component may interfere with the support. Therefore, it is difficult to assemble the components to the case. In order to prevent interference at the time of such assembly, if a space is provided in the case, the case may be increased in size.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a power converter that facilitates downsizing while facilitating assembly.

One aspect of the present invention is a laminate (2) in which a semiconductor module (21) having a built-in semiconductor element and a plurality of cooling pipes (22) for sandwiching and cooling the semiconductor module from both sides are laminated,
A case (3) in which the laminate is disposed inside;
Inside the case, a pressure member (4) disposed at an end portion in the stacking direction (X) of the stacked body and pressing the stacked body in the stacking direction;
A support body (5) for supporting the pressure member from the opposite side of the laminate in the laminating direction;
The case includes a base plate (31) opposed to the laminated body in a direction (Z) orthogonal to the laminating direction, and a support wall portion that supports the laminated body from the side opposite to the pressing member in the laminating direction. (32)
The said support body is a member different from the said case, and exists in the power converter device (1) assembled | attached to the said base plate.

  In the power converter, the support body is a separate member from the case, and is assembled to the base plate. Therefore, when assembling the power conversion device, the support body, which is a separate member from the case, is assembled to the base plate. If the component is assembled to the case before the assembly process of the support to the base plate, the component can be assembled without interfering with the support. Therefore, the power conversion device can be easily assembled.

  In addition, since it is not necessary to consider interference with the support body when assembling the component parts to the case, there is no need to allow a space in the case in consideration of such interference. As a result, the case can be easily downsized and the power converter can be easily downsized.

As described above, according to the aspect described above, it is possible to provide a power conversion device that facilitates assembly and facilitates downsizing.
In addition, the code | symbol in the parenthesis described in the means to solve a claim and a subject shows the correspondence with the specific means as described in embodiment mentioned later, and limits the technical scope of this invention. It is not a thing.

The top view of the power converter device in Embodiment 1. FIG. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. The top view of a case in Embodiment 1. FIG. The top view of the support body in Embodiment 1. FIG. The side view of the support body in Embodiment 1. FIG. Sectional explanatory drawing of the fixing structure of the support body with respect to the base plate in Embodiment 1. FIG. Sectional explanatory drawing of the fixing structure of the support body with respect to the baseplate at the time of inserting a screw in the rear insertion hole in Embodiment 1. FIG. Sectional explanatory drawing of the fixing structure of the support body with respect to the baseplate at the time of inserting a screw in the front insertion hole in Embodiment 1. FIG. FIG. 3 is an exploded perspective view of the power conversion device according to the first embodiment. (A) The perspective view of a case in Embodiment 1, (B) Explanatory drawing of a cooler arrangement process and a pressurization member arrangement process, (C) Explanatory drawing of a connector arrangement process. (D) Explanatory drawing of a support body arrangement | positioning process in Embodiment 1, (E) Explanatory drawing of a support body fixing process. The top view of a case in Embodiment 2. FIG. Sectional explanatory drawing of the fixing structure of the support body with respect to the baseplate in Embodiment 2. FIG.

(Embodiment 1)
Hereinafter, an embodiment of the above-described power conversion device will be described with reference to the drawings.
The power converter 1 of this embodiment is provided with the laminated body 2, the case 3, the pressurization member 4, and the support body 5, as shown to FIG. 1, FIG.

  The stacked body 2 is formed by stacking a semiconductor module 21 and a plurality of cooling pipes 22. The semiconductor module 21 includes a semiconductor element. The cooling pipe 22 cools the semiconductor module 21 by sandwiching it from both sides. Case 3 arranges layered product 2 inside. The pressure member 4 is disposed inside the case 3 at an end portion in the stacking direction of the stacked body 2 and presses the stacked body 2 in the stacking direction. The support body 5 supports the pressing member 4 from the opposite side to the stack body 2 in the stacking direction.

  The case 3 has a base plate 31 and a support wall portion 32. The base plate 31 faces the stacked body 2 in a direction orthogonal to the stacking direction. The support wall part 32 supports the laminated body 2 from the opposite side to the pressurization member 4 in the lamination direction. As shown in FIGS. 2 and 9, the support body 5 is a separate member from the case 3 and is assembled to the base plate 31.

In addition, the lamination direction of the laminated body 2 is suitably called X direction below. Further, a direction orthogonal to the X direction and facing the base plate 31 and the stacked body 2 is appropriately referred to as a Z direction. Furthermore, a direction orthogonal to both the X direction and the Z direction is appropriately referred to as a Y direction.
Moreover, let the side in which the support body 5 is arrange | positioned with respect to the laminated body 2 in a X direction be a back side, and let the opposite side be a front side. However, the expressions before and after are for convenience and do not particularly limit the arrangement posture of the power conversion device 1. Moreover, the side where the laminated body 2 is arrange | positioned with respect to the baseplate 31 in a Z direction is called an upper side, and the other side is called a lower side. These upper and lower expressions are also convenient, and do not particularly limit the arrangement posture of the power conversion device 1.

  As shown in FIG. 2 and FIG. 3, the case 3 has a peripheral wall portion 33 erected upward from the outer edge of the base plate 31. The peripheral wall 33 includes a front wall 331 erected from the front end of the base plate 31, a rear wall 332 erected from the rear end of the base plate 31, and a pair of side walls 333 erected from the side end of the base plate 31. It is configured. In the present embodiment, the front wall portion 331 constitutes the support wall portion 32. The case 3 can be made of a metal such as aluminum.

  As shown in FIG. 1, the cooling pipe 22 has an elongated shape in the Y direction. The plurality of cooling pipes 22 are arranged in the X direction in a state of being arranged in parallel to each other. The cooling pipe 22 is configured so that the refrigerant flows inside along the Y direction. The cooling pipes 22 adjacent to each other in the X direction are connected by connecting pipes 221 at both ends of the cooling pipe 22 in the Y direction. The connecting pipe 221 may be configured by a part configured integrally with the cooling pipe 22 or may be configured by a separate member from the cooling pipe 22.

  In addition, among the plurality of cooling pipes 22, the cooling pipe 22 disposed at one end in the X direction is provided with a refrigerant introduction pipe 222 and a refrigerant discharge pipe 223 so as to protrude in the X direction. The refrigerant introduction pipe 222 and the refrigerant discharge pipe 223 are arranged on the front side in the X direction in the power conversion device 1. The cooler 220 is configured by the plurality of cooling pipes 22, the plurality of connection pipes 221, the refrigerant introduction pipe 222 and the refrigerant discharge pipe 223 which are arranged and assembled as described above. And the semiconductor module 21 is arrange | positioned between the cooling pipes 22 adjacent to a X direction. That is, the laminated body 2 is configured by alternately laminating a plurality of cooling pipes 22 and a plurality of semiconductor modules 21 in the X direction.

  The semiconductor module 21 is configured to be cooled by a refrigerant flowing through the cooling pipe 22. That is, the refrigerant introduced into the cooler 220 from the refrigerant introduction pipe 222 is distributed and distributed to the plurality of cooling pipes 22 through the connection pipe 221 as appropriate. During this time, the refrigerant exchanges heat with the semiconductor module 21. The received refrigerant is discharged from the cooler 220 through the connection pipe 221 and the refrigerant discharge pipe 223. In this way, the semiconductor module 21 is cooled.

  The cooler 220 is configured to be deformable so that the interval between the cooling pipes 22 adjacent to each other in the X direction is reduced by the applied pressure in the X direction. For example, the connecting pipe 221 can be configured to be compressible and deformable in the X direction, or a diaphragm structure can be provided at the joint of the cooling pipe 22 with the connecting pipe 221. The cooling pipe 22 is made of a metal having excellent thermal conductivity, such as aluminum. Further, the connecting pipe 221, the refrigerant introduction pipe 222 and the refrigerant discharge pipe 223 constituting the cooler 220 are also made of the same kind of metal as the cooling pipe 22.

  As shown in FIGS. 1 and 2, the pressure member 4 is interposed between the laminated body 2 and the support body 5. The pressure member 4 can be configured by a leaf spring, for example. Specifically, the leaf spring can be configured by bending spring steel. However, the pressurizing member 4 is not limited to a leaf spring, and may be in other forms. In the drawings, the pressing member 4 is schematically described with its specific shape omitted. Further, a highly rigid pressure contact plate can be interposed between the leaf spring and the cooling pipe 22. Thereby, it can prevent that the cooling pipe 22 deform | transforms with the local pressurization force received from a leaf | plate spring.

  As shown in FIGS. 1, 2, 4, and 5, the support body 5 includes a support plate portion 51 and a fixed plate portion 52. The support plate portion 51 includes a support surface 511 that is orthogonal to the X direction. The fixed plate portion 52 extends from the end of the support plate portion 51 on the base plate 31 side to the opposite side of the laminate 2. The support plate portion 51 supports the pressure member 4, and the fixed plate portion 52 is fixed to the base plate 31.

  The support body 5 has a substantially L-shaped cross-sectional shape in the XZ plane. The fixed plate portion 52 is formed in a flat plate shape orthogonal to the Z direction. The support plate portion 51 is erected upward from the front end of the fixed plate portion 52. The support plate portion 51 is formed in a flat plate shape orthogonal to the X direction.

The support body 5 is configured to be fixedly arranged at a plurality of positions in the X direction with respect to the base plate 31.
As shown in FIGS. 1, 2, and 6, the support body 5 is fixed to the base plate 31 with screws 6. The support body 5 has an insertion hole 53 through which the screw 6 is inserted. The base plate 31 has a female screw portion 34 that is screwed into the screw 6. The insertion holes 53 are formed at a plurality of locations in the X direction.

As shown in FIG. 4, in the present embodiment, the insertion hole 53 is provided in the fixed plate portion 52. The insertion holes 53 are arranged at equal intervals in three places in the X direction. Thus, two rows of hole arrangements in which the three insertion holes 53 are arranged in the X direction are formed. That is, the hole array is arranged in two rows at two locations in the Y direction of the fixed plate portion 52. Further, when the pair of insertion holes 53 arranged in the Y direction are regarded as a set of hole groups, three sets of hole groups are arranged in the X direction. The support body 5 is fixed to the base plate 31 using any one of the three sets of hole groups.
Each insertion hole 53 is formed so that its diameter is slightly larger than the shaft diameter of the screw 6.

  As shown in FIG. 3, the base plate 31 is provided with female screw portions 34 at two locations. Each female screw portion 34 is open on the upper surface of the base plate 31. The female screw portion 34 may penetrate the base plate 31. The two female screw portions 34 are arranged side by side in the Y direction of the base plate 31.

The two female screw portions 34 are formed corresponding to a pair of insertion holes 53 arranged in the Y direction. That is, the arrangement interval of the two female screw portions 34 is substantially the same as the arrangement interval of the pair of insertion holes 53 arranged in the Y direction constituting one hole group.
In fixing the support body 5 to the base plate 31, two insertion holes 53 constituting one set of hole groups of the three sets of hole groups in the fixing plate portion 52 are formed in the two female screw portions 34 in the base plate 31. Aligned state. In this state, the screw 6 is inserted into each insertion hole 53 and the screw 6 is fastened to each female screw portion 34. Thereby, the support body 5 is fixed to the base plate 31.

  Which of the three groups of holes is used is appropriately selected according to the dimension in the X direction of the laminate 2, the pressure member 4, and the like. That is, by changing the insertion hole 53 through which the screw 6 fastened to the base plate 31 is inserted and changing the position of the support body 5 in the X direction with respect to the case 3, the pressing force applied to the laminate 2 by the pressing member 4 is increased. Can be adjusted. For example, as shown in FIG. 7, among the three sets of hole groups, the insertion hole 53 of the hole group arranged at the rearmost position is aligned with the female screw portion 34 of the base plate 31, and the support body is supported by the screws 6. 5 can also be fixed to the case 3. Alternatively, as shown in FIG. 8, among the three sets of hole groups, the insertion hole 53 of the hole group arranged in the foremost position is aligned with the female screw portion 34 of the base plate 31, and the support body is supported by the screws 6. 5 can also be fixed to the case 3. Further, as shown in FIG. 6, among the three sets of hole groups, the insertion hole 53 of the hole group arranged at the center is aligned with the female screw portion 34 of the base plate 31, and the support body 5 is fixed with the screw 6. Can be fixed to the case 3.

  As shown in FIGS. 1 and 2, in the case 3, a part of the components constituting the power conversion device 1 is disposed on the opposite side of the support body 5 from the stacked body 2 in the stacking direction. In the present embodiment, a part of the component is the connector 7. That is, the connector 7 is disposed in the case 3 on the rear side of the support body 5. The connector 7 has a long shape in the Y direction. Further, the connector 7 has a protruding portion 71 that protrudes to the rear side in the X direction. The protruding portion 71 protrudes from the rear wall portion 332 of the case 3 to the outside of the case 3.

The power conversion device 1 of the present embodiment can be an inverter mounted on, for example, an electric vehicle or a hybrid vehicle.
As shown in FIGS. 1 and 2, in the present embodiment, the stacked body 2 is formed by stacking a plurality of semiconductor modules 21 and a plurality of cooling pipes 22.

  The semiconductor module 21 is formed by molding a switching element made of IGBT or the like with resin. IGBT is an abbreviation for insulated gate bipolar transistor. The semiconductor module 21 may include a plurality of switching elements, or may include a diode together with the switching elements. Further, as shown in FIG. 9, the semiconductor module 21 has a substantially rectangular parallelepiped shape in which the dimension in the X direction is smaller than the dimension in the Y direction and the dimension in the Z direction. Further, the semiconductor module 21 has a terminal (not shown) protruding from the resin portion in the Z direction.

Next, the manufacturing method of the power converter device 1 is demonstrated with reference to FIG. 10, FIG.
The manufacturing method of the power converter device 1 has the following cooler arrangement | positioning processes, a pressurization member arrangement | positioning process, a connector arrangement | positioning process, a support body arrangement | positioning process, and a support body fixing process.

  In the cooler arrangement step, as shown in FIG. 10B, the cooler 220 is arranged in the case 3 shown in FIG. At this time, the refrigerant introduction pipe 222 and the refrigerant discharge pipe 223 are inserted through the front through holes 334 and 335 and protrude forward from the front wall portion 331 which is also the support wall portion 32. Further, the semiconductor module 21 is disposed in a space between adjacent cooling pipes 22. Then, the cooling pipe 22 arranged at the front end in the X direction is brought into contact with the support wall portion 32 of the case 3.

  In the pressing member arranging step, the pressing member 4 is arranged in the case 3 as shown in FIG. The pressurizing member 4 is brought into contact with the cooling pipe 22 disposed at the rear end in the X direction.

  In the connector arranging step, the connector 7 is arranged in the case 3 as shown in FIG. At this time, the protrusion 71 of the connector 7 is inserted through the rear through-hole 336 and exposed to the rear of the case 3. Further, the connector 7 is brought into contact with the rear wall portion 332 in the peripheral portion of the protruding portion 71.

  In the support body arranging step, the support body 5 is arranged behind the pressure member 4 in the case 3 as shown in FIG. Next, the support body 5 is pressed against the case 3 toward the front in the X direction by a pressing jig (not shown). Thereby, between the support plate part 51 of the support body 5, and the support wall part 32 of the case 3, the laminated body 2 and the pressurization member 4 are compressed to a X direction. That is, the support plate portion 51 of the support body 5 is in pressure contact with the pressure member 4, and the pressure member 4 is in pressure contact with the laminate 2. Along with this, the pressing member 4 is elastically compressed, and a pressing force corresponding to the restoring force is applied to the laminate 2. The support body 5 is moved in the X direction to such an extent that the pressure applied by the pressure member 4 becomes a predetermined moderate magnitude.

Then, one set of the insertion holes 53 of the three sets of hole groups in the support body 5 is aligned with the female screw portion 34 of the base plate 31. That is, a hole group that can fix the support body 5 is selected at a position where the pressing force applied to the laminated body 2 by the pressure member 4 becomes a predetermined magnitude, and the insertion hole 53 of the hole group is set to the female screw. Align with part 34.
In this manner, the arrangement of the support body 5 with respect to the case 3 is maintained in a state where the insertion holes 53 of an appropriate hole group are aligned with the female screw portion 34 of the base plate 31.

In the support body fixing step, as shown in FIG. 11 (E), the screw 6 is inserted into each of the pair of insertion holes 53 while maintaining the arrangement state of the support body 5 with respect to the case 3. The screw 6 is fastened to each of the pair of female screw portions 34.
As described above, the power conversion device 1 in the state shown in FIG. 1 is manufactured.
Thus, in this embodiment, a connector arrangement | positioning process is performed before a support body arrangement | positioning process and a support body fixing process.

Next, the effect of this embodiment is demonstrated.
In the power converter 1 of this embodiment, the support body 5 is a separate member from the case 3 and is assembled to the base plate 31. Therefore, when assembling the power conversion device 1, the support body 5, which is a separate member from the case 3, is assembled to the base plate 31. If the connector 7 as a part of the component is assembled to the case 3 before the assembly process of the support body 5 to the base plate 31, the connector 7 can be assembled without interfering with the support body 5. Therefore, the power converter 1 can be easily assembled.

  Moreover, since it is not necessary to consider the interference to the support body 5 at the time of assembling the connector 7 to the case 3, it is not necessary to allow a space in the case 3 in consideration of such interference. As a result, the case 3 can be easily downsized, and the power converter 1 can be easily downsized.

  Further, the support body 5 is configured to be fixedly arranged with respect to the base plate 31 at a plurality of positions in the stacking direction. Therefore, when the support body 5 is assembled to the base plate 31, the distance between the support wall portion 32 and the support body 5 in the X direction can be changed. Thereby, the pressing force of the pressing member 4 with respect to the laminated body 2 can be adjusted.

Further, the support body 5 is fixed to the base plate 31 with screws 6. Thereby, the assembly of the support body 5 can be performed easily.
The fixed plate portion 52 has insertion holes 53, the base plate 31 has female screw portions 34, and the insertion holes 53 are formed at a plurality of locations in the X direction. Thereby, the position of the support body 5 with respect to the base plate 31 can be easily selected and fixed.

  The support body 5 includes a support plate portion 51 and a fixed plate portion 52, the support plate portion 51 supports the pressure member 4, and the fixed plate portion 52 is fixed to the base plate 31. Thereby, it is easy to stably fix the support body 5 to the base plate 31, and it is easy to stably support the pressure member 4 by the support body 5. In addition, the space in the case 3 can be easily widened behind the support plate portion 51.

  As described above, according to the aspect described above, it is possible to provide a power conversion device that facilitates assembly and facilitates downsizing.

(Embodiment 2)
In the power conversion device 1 of the present embodiment, as shown in FIGS. 12 and 13, the female screw portions 34 of the base plate 31 are formed at a plurality of locations in the X direction.

  As shown in FIG. 12, the female screw portions 34 are arranged at five equal intervals in the X direction on the base plate 31. In this way, the female screw arrangement in which the five female screw portions 34 are arranged in the X direction is formed in two rows. That is, the female screw array is arranged in two rows at two locations in the Y direction on the base plate 31. Further, when the pair of female screw portions 34 arranged in the Y direction is regarded as a set of female screws, five sets of female screws are arranged in the X direction. As shown in FIG. 13, using one female screw group of the five sets of female screw groups and one hole group of the three sets of hole groups in the support body 5, The body 5 is fixed to the base plate 31.

  In fixing the support body 5 to the base plate 31, two female screw portions 34 constituting one set of female screw groups among the five sets of female screw groups in the base plate 31 are formed into three sets of holes in the fixing plate portion 52. It is set as the state aligned with the two penetration holes 53 which comprise one set of hole groups among groups. In this state, the screw 6 is inserted into each insertion hole 53 and the screw 6 is fastened to each female screw portion 34. Thereby, the support body 5 is fixed to the base plate 31.

  In addition, the arrangement | positioning space | interval of the internal thread part 34 located in a line with the X direction corresponds with the arrangement space | interval of the penetration hole 53 located in a line with the X direction. Therefore, each of the female screw portions 34 at a plurality of locations in the X direction may be aligned with each of the insertion holes 53 at a plurality of locations in the X direction. In this state, the screws 6 may be inserted into the plurality of insertion holes 53 in the X direction, and may be fastened to the female screw portion 34. However, the arrangement interval of the female screw portions 34 and the arrangement interval of the insertion holes 53 do not necessarily coincide with each other.

  Other configurations are the same as those of the first embodiment. Of the reference numerals used in the second and subsequent embodiments, the same reference numerals as those used in the above-described embodiments represent the same components as those in the above-described embodiments unless otherwise indicated.

In the present embodiment, the pressure applied to the laminate 2 by the pressure member 4 can be adjusted over a wider range.
In addition, the same effects as those of the first embodiment can be obtained.

  In the present embodiment, the pair of insertion holes 53 are provided at three locations in the X direction in the fixed plate portion 52, but the pair of insertion holes 53 are provided at one location in the X direction in the fixed plate portion 52. It is also possible to adopt a configuration.

  Moreover, in this embodiment, although the female screw part 34 by which the end was obstruct | occluded is provided in the base plate 31, it can also be set as the structure which the female screw part penetrated the base plate. In this case, in a state where the support body is fixed to the base plate, each of the female screw portions that are not used for fastening can be filled with putty or the like. Thereby, the waterproofness of a power converter device can be improved.

  The present invention is not limited to the above embodiments, and can be applied to various embodiments without departing from the scope of the invention. For example, in each of the embodiments described above, the configuration in which one support body 5 is assembled to the base plate 31 is shown, but a plurality of support bodies divided in the Y direction may be assembled to the base plate. In this case, a plurality of support bodies are assembled to the base plate so that the support surfaces of the support plate portions of the respective support bodies are arranged on the same plane.

  Moreover, in each said embodiment, although the insertion hole 53 was provided in the support body 5, and the internal thread part 34 was provided in the base plate 31, the structure which provided the insertion hole in the base plate and provided the internal thread part in the support body, and You can also In this case, the screw is inserted into the base plate from below and fastened to the support body.

  That is, the first member, which is one of the support body and the base plate, has an insertion hole, and the second member, which is the other of the support body and the base plate, has a female screw portion screwed into the screw, and the insertion hole And at least one of the female screw portions can be configured to be formed at a plurality of locations in the stacking direction. In each of the above-described embodiments, the support body is the first member, and the base plate is the second member.

  Moreover, it can also be set as the structure which fixed the support body to the baseplate with the volt | bolt and the nut. That is, it is good also as a structure which provides an insertion hole in both a support body and a baseplate, and fastens the volt | bolt penetrated to both insertion holes with a nut.

  Moreover, in each said embodiment, although embodiment which fixed the support body 5 to the baseplate 31 using the screw 6 was shown, it replaces with this and has a structure which fixed the support body to the baseplate using the rivet. You can also In this case, insertion holes are provided in both the support body and the base plate so that rivets can be used.

  Moreover, in each said embodiment, although embodiment which has arrange | positioned the connector 7 in the back side rather than the support body 5 in case 3 was shown instead of or with this, other components, such as a bus bar Can also be configured to be arranged behind the support body 5 in the case 3.

DESCRIPTION OF SYMBOLS 1 Power converter 2 Laminated body 21 Semiconductor module 22 Cooling pipe 3 Case 31 Base plate 32 Bearing wall part 4 Pressurizing member 5 Bearing

Claims (7)

A laminated body (2) in which a semiconductor module (21) containing a semiconductor element and a plurality of cooling pipes (22) for cooling the semiconductor module by sandwiching the semiconductor module from both sides are laminated;
A case (3) in which the laminate is disposed inside;
Inside the case, a pressure member (4) disposed at an end portion in the stacking direction (X) of the stacked body and pressing the stacked body in the stacking direction;
A support body (5) for supporting the pressure member from the opposite side of the laminate in the laminating direction;
The case includes a base plate (31) opposed to the laminated body in a direction (Z) orthogonal to the laminating direction, and a support wall portion that supports the laminated body from the side opposite to the pressing member in the laminating direction. (32)
The said support body is a member different from the said case, and is the power converter device (1) assembled | attached to the said base plate.   The power converter according to claim 1, wherein the support body is configured to be fixedly arranged at a plurality of positions in the stacking direction with respect to the base plate.   The power converter according to claim 2, wherein the support body is fixed to the base plate with a screw (6).   The first member which is one of the support body and the base plate has an insertion hole (53) through which the screw is inserted, and the second member which is the other of the support body and the base plate is the screw and screw. 4. The power conversion device according to claim 3, wherein the power conversion device has a female screw portion to be joined, and at least one of the insertion hole and the female screw portion is formed at a plurality of locations in the stacking direction.   The power converter according to claim 4, wherein the support body is the first member, and the base plate is the second member.   The support body is provided with a support plate portion (51) having a support surface (511) orthogonal to the stacking direction, and an end on the base plate side of the support plate portion that is extended to the opposite side of the stack body. The fixed plate portion (52), the support plate portion supports the pressure member, and the fixed plate portion is fixed to the base plate. Power conversion device.   In the said case, at least one part (7) of the component which comprises the said power converter device is arrange | positioned on the opposite side to the said laminated body in the said lamination direction rather than the said support body. The power converter device as described in any one of.

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