JP6771835B2 - Power converter - Google Patents

Description

The present invention relates to a power converter having a heat generating component.

In the conventional power conversion device, the block type power module is attached to the heat sink in order to secure the heat dissipation of the block type power module which is a heat generating component. Further, in the conventional power conversion device, a control board is arranged above the block type power module in order to reduce the size of the power conversion device. The control board is supported by a plurality of columns attached to the heat sink (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-23633

However, in the conventional power conversion device described in Patent Document 1, a plurality of columns supporting the control board are provided outside the block type power module. For this reason, there is a problem that the space for providing a plurality of columns hinders the miniaturization of the power conversion device.

The present invention has been made to solve the above problems, and to obtain a power conversion device capable of miniaturization while ensuring heat dissipation of heat generating parts.

The power conversion device according to the present invention includes a housing provided with an opening, a power conversion unit housed inside the housing, and a lid member closing the opening, and the inner surface of the housing is open. It has a cooling surface facing the unit, and the power conversion unit has a first accommodating component which is a heat generating component provided on the cooling surface and a second accommodating component provided on the lid member.

According to the power conversion device according to the present invention, it is possible to reduce the size of the heat-generating component while ensuring the heat dissipation.

It is a vertical sectional view which shows the electric power conversion apparatus in Embodiment 1 of this invention. It is a vertical sectional view which shows the electric power conversion apparatus in Embodiment 2 of this invention.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. Members and parts that are the same or correspond to each other will be described with the same reference numerals.

Embodiment 1.
FIG. 1 is a vertical cross-sectional view showing the power conversion device 1 according to the first embodiment of the present invention. In the figure, the power conversion device 1 is mounted on a vehicle such as an electric vehicle or a hybrid vehicle whose drive source is a motor. The power conversion device 1 has a housing 3 having an opening, a lid member 4 that closes the opening of the housing 3, and a power conversion unit 5 housed inside the housing 3. .. In this example, the power conversion device 1 is arranged with the opening of the housing 3 facing upward. The power conversion device 1 may be arranged with the opening of the housing 3 facing downward, or may be arranged with the opening of the housing 3 facing in the horizontal direction.

The housing 3 is made of a metal material having thermal conductivity. In this example, aluminum is used as the metal material constituting the housing 3. Further, the housing 3 is integrally formed of a single material. In this example, the housing 3 is formed by die-casting aluminum.

Further, the housing 3 is a container having a cooling wall portion 32 and a peripheral wall portion 31 provided on the outer peripheral portion of the cooling wall portion 32. The cooling wall portion 32 is the bottom portion of the housing 3. The peripheral wall portion 31 is formed along the outer peripheral portion of the cooling wall portion 32. The opening of the housing 3 is formed by being surrounded by the peripheral wall portion 31.

A part of the inner surface of the housing 3 is a cooling surface 3a facing the opening of the housing 3. The cooling surface 3a is formed on the cooling wall portion 32.

The cooling wall portion 32 has a plate-shaped wall member 321 and a plurality of pedestal portions 322, 323, 324 provided on the wall member 321. The peripheral wall portion 31 is provided on the outer peripheral portion of the wall member 321. The plurality of pedestal portions 322, 323, 324 project from the wall member 321 toward the opening of the housing 3. The cooling surface 3a is formed on each of the wall member 321 and each pedestal portion 322, 323, 324.

A groove 36 is provided on the surface of the cooling wall portion 32 opposite to the cooling surface 3a as a flow path through which the cooling fluid flows. The groove 36 is open toward the outside of the housing 3. Water, oil, or the like is used as the cooling fluid flowing through the groove 36. A plate-shaped flow path cover 37 that covers the groove 36 is fixed to the cooling wall portion 32 by a screw member (not shown). A cooling mechanism (not shown) for cooling the cooling fluid is connected to the groove 36. A cooling fluid cooled by the cooling mechanism is flowed through the groove 36.

The flow path cover 37 is made of a metal material having thermal conductivity. In this example, aluminum is used as the metal material constituting the flow path cover 37. Further, in this example, the flow path cover 37 is formed by die-casting of aluminum.

The lid member 4 is made of a metal material having thermal conductivity. In this example, aluminum is used as the metal material constituting the lid member 4. Further, in this example, the lid member 4 is formed by die-casting of aluminum.

The lid member 4 is fixed to the peripheral wall portion 31 in a state of being in contact with the end portion of the peripheral wall portion 31 in which the opening of the housing 3 is formed. As a result, the lid member 4 is electrically and thermally connected to the housing 3. Further, the lid member 4 is fixed to the peripheral wall portion 31 by the screw member 100. As a result, the lid member 4 can be attached to and detached from the housing 3. The lid member 4 has a plate-shaped lid main body 41 that closes the opening of the housing 3, and a plurality of support members 42 provided on the lid main body 41.

The lid body 41 is formed with a back surface of the lid facing the inside of the housing 3 and a surface of the lid facing the outside of the housing 3. In this example, the back surface of the lid and the front surface of the lid of the lid body 41 are flat. The outer peripheral portion of the lid main body 41 is fixed to the peripheral wall portion 31.

The plurality of support members 42 project from the back surface of the lid of the lid main body 41 toward the inside of the housing 3. In this example, each of the plurality of support members 42 projects from the lid main body 41 in a direction orthogonal to the back surface of the lid of the lid main body 41. Further, in this example, the heights of the plurality of support members 42 are all the same. That is, in this example, the distances from the back surface of the lid of the lid body 41 to the end faces of the support members 42 are all the same.

The power conversion unit 5 is a device that converts the form of electric power. The power conversion unit 5 includes a charging unit that converts commercial AC power to DC power, a DC / DC converter that converts 100V DC voltage to, for example, 12V DC voltage, an inverter that converts DC power to AC power, and the like. Can be mentioned. In this example, a DC / DC converter that converts the DC voltage of the high-pressure battery into the DC voltage of the low-voltage battery for auxiliary equipment is used as the power conversion unit 5.

The power conversion unit 5 has a reactor 51, a switching element 52, and a transformer 53 as a plurality of first accommodating parts provided on the cooling surface 3a, and a second accommodating component 54 provided on the lid member 4. There is. The reactor 51, the switching element 52, the transformer 53, and the second housing component 54 are electrically connected to each other by electrical wiring (not shown).

The reactor 51, the switching element 52, the transformer 53, and the second accommodating component 54 are heat generating components that generate heat when energized. The amount of heat generated by energization of the reactor 51, the switching element 52, and the transformer 53 is larger than the amount of heat generated by energization of the second accommodating component 54. Therefore, each of the reactor 51, the switching element 52, and the transformer 53 is a heat generating component that requires cooling more than the second accommodating component 54 and has a large calorific value.

Heat from each of the reactor 51, the switching element 52, and the transformer 53 is dissipated from the cooling surface 3a to the cooling fluid via the cooling wall portion 32. The heat from the second accommodating component 54 is dissipated to the outside from the lid member 4 and the housing 3.

The reactor 51 has a reactor body 511 that generates heat when energized, and a plurality of reactor fixing portions 512 that protrude from the side surface of the reactor body 511.

The reactor body 511 is provided on the cooling surface 3a adjacent to the pedestal portion 322. Each reactor fixing portion 512 is in contact with the cooling surface 3a formed on the pedestal portion 322. A screw hole is provided on the cooling surface 3a of the pedestal portion 322. Each reactor fixing portion 512 is fixed to the pedestal portion 322 by tightening the screw member 102 attached to the screw hole of the pedestal portion 322. The heat from each reactor fixing portion 512 is transferred to the pedestal portion 322 from the contact portion between the reactor fixing portion 512 and the cooling surface 3a.

The switching element 52 has an element body 521 that generates heat when energized, and a terminal portion 522 that protrudes from the element body 521.

A screw hole is provided on the cooling surface 3a of the pedestal portion 323. Each element main body 521 is fixed to the pedestal portion 323 by tightening the screw member 103 attached to the screw hole of the pedestal portion 323.

The transformer 53 has a transformer main body 531 that generates heat when energized, and a plurality of transformer fixing portions 532 that protrude from the side surface of the transformer main body 531.

The transformer main body 531 is provided on the cooling surface 3a adjacent to the pedestal portion 324. Each transformer fixing portion 532 is in contact with the cooling surface 3a formed on the pedestal portion 324. A screw hole is provided on the cooling surface 3a of the pedestal portion 324. Each transformer fixing portion 532 is fixed to the pedestal portion 324 by tightening the screw member 104 attached to the screw hole of the pedestal portion 324. The heat from each transformer fixing portion 532 is transferred to the pedestal portion 324 from the contact portion between the transformer fixing portion 532 and the cooling surface 3a. The screw holes provided in each pedestal portion 322, 323, 324 are formed so as not to reach the groove 36.

Each of the reactor main body 511 and the transformer main body 531 is provided on the cooling surface 3a formed on the wall member 321 via a heat transfer cushioning material (not shown). The element main body 521 is provided on the cooling surface 3a formed on the pedestal portion 323 via a heat transfer cushioning material (not shown).

The heat transfer cushioning material fills the gap between each of the reactor main body 511, the element main body 521 and the transformer main body 531 and the cooling surface 3a, and heats from the reactor main body 511, the element main body 521 and the transformer main body 531 is cooled by the cooling wall portion. It is a paste-like cushioning material to be transmitted to 32. Each of the heat from the reactor body 511 and the transformer body 531 is transferred to the wall member 321 via the heat transfer cushioning material. The heat from the element body 521 is transferred to the pedestal portion 323 via the heat transfer cushioning material.

The second accommodating component 54 includes a substrate 55, an aluminum electrolytic capacitor 56, a connector 57, a plurality of capacitors 58, a plurality of control ICs (integrated circuits) 59, and a plurality of resistors 60.

The substrate 55 is an electrical wiring board supported by a plurality of support members 42. The substrate 55 is a flat plate made of a resin material having electrical insulation. As the resin material constituting the substrate 55, an epoxy resin or the like is used. Further, the substrate 55 is formed with a first mounting surface 55a and a second mounting surface 55b facing each other in the thickness direction of the substrate 55. A pattern is formed on each of the first mounting surface 55a and the second mounting surface 55b by a metal material such as copper. Therefore, the substrate 55 is a printed circuit board having a flat shape without unevenness. The aluminum electrolytic capacitor 56, the connector 57, the plurality of capacitors 58, the plurality of control ICs 59, and the plurality of resistors 60 are electrically connected to each other via a pattern of the substrate 55.

The substrate 55 is supported by a plurality of support members 42 with the second mounting surface 55b facing the lid main body 41. Further, the substrate 55 is provided with a plurality of mounting holes penetrating the substrate 55. A screw hole is provided at the tip of each support member 42. The screw holes formed in each support member 42 are screw holes that do not penetrate the lid member 4.

The substrate 55 is fixed to each support member 42 by a plurality of screw members 101 as fixtures. Each screw member 101 has a head and a screw portion protruding from the head as an insertion portion. The substrate 55 is fixed to each support member 42 by screwing the screw portion of the screw member 101 inserted into each mounting hole from the first mounting surface 55a side into the screw hole of each support member 42. The threaded portion of each screw member 101 is inserted into the support member 42 by being screwed into the screw hole. The screw portion of the screw member 101 is housed inside the lid member 4. The second mounting surface 55b of the substrate 55 is in contact with the end surface of each support member 42. Between the substrate 55 and the lid main body 41, there is a space formed by the substrate 55 being supported by each of the support members 42.

The aluminum electrolytic capacitor 56, the connector 57, the plurality of capacitors 58, the plurality of control ICs 59, and the plurality of resistors 60 are each mounted on the substrate 55 as a plurality of mounting components. In this example, the aluminum electrolytic capacitor 56, the connector 57, each capacitor 58, and each control IC 59 are mounted on the first mounting surface 55a by soldering. Further, in this example, each resistor 60 is mounted on the second mounting surface 55b by soldering. Each resistor 60 is arranged in a space between the substrate 55 and the lid body 41.

The aluminum electrolytic capacitor 56 is composed of an aluminum electrolytic capacitor main body 561 and two reed portions 562 protruding from the aluminum electrolytic capacitor main body 561. Each lead portion 562 is inserted into a through hole provided in the substrate 55 from the first mounting surface 55a side. Each lead portion 562 is soldered to a pattern formed on the second mounting surface 55b from the second mounting surface 55b side.

A communication line (not shown) for communicating with an external device is connected to the connector 57.

An electrical insulating layer 45 is provided on the back surface of the lid of the lid body 41. As a result, the electrical insulating layer 45 is arranged between the lid main body 41 and the second accommodating component 54. The electrical insulating layer 45 is made of a flexible insulating material.

In this example, the insulating sheet having a certain thickness is the electrical insulating layer 45. Further, in this example, through holes corresponding to the outer shape of each support member 42 are provided at positions corresponding to each support member 42 in the electrical insulating layer 45. Further, in this example, an adhesive is provided on one side of the electrically insulating layer 45. The electrically insulating layer 45 is adhered to the back surface of the lid of the lid main body 41 in a state where each support member 42 is individually inserted into each through hole. As a result, the electrically insulating layer 45 covers at least a part of the back surface of the lid of the lid body 41.

At least a part of the support member 42a located on the outermost side of the plurality of support members 42 overlaps with any region of the reactor 51, the switching element 52, and the transformer 53 when the cooling surface 3a is viewed from the lid body 41. .. In this example, when the cooling surface 3a is viewed from the lid main body 41, all of the two support members 42a located on the outermost side of the plurality of support members 42 overlap the reactor 51. All of the other support member 42a overlaps the transformer 53.

The height of each support member 42 with respect to the lid main body 41 is set according to the height of the component having the largest height dimension among the plurality of mounting components mounted on the second mounting surface 55b of the substrate 55. Therefore, in this example, the height of each support member 42 is set according to the height of each resistor 60 with respect to the substrate 55. A state in which a gap exists is maintained between each resistor 60 and the electrically insulating layer 45.

A plurality of mounting components mounted on the first mounting surface 55a are arranged in a space between each of the reactor 51, the switching element 52, and the transformer 53 and the substrate 55. Further, the height of each mounted component is set according to the height of the space in which the mounted component is arranged. That is, in the space between each of the heat-generating components and the substrate 55, mounting components having a height corresponding to the distance between each heat-generating component and the substrate 55 are individually arranged. As a result, each mounted component is arranged so that the gap formed between each mounted component and each heat generating component arranged on the facing cooling surface 3a is reduced.

As described above, according to the power conversion device 1 of the first embodiment, the reactor 51, the switching element 52, and the transformer 53, which are heat generating parts of the power conversion unit 5, are provided on the cooling surface 3a of the housing 3, and the power conversion unit is provided. The second accommodating component 54 of 5 is provided on the lid member 4. Therefore, the heat from the reactor 51, the switching element 52, and the transformer 53 can be dissipated from the cooling surface 3a to the outside of the housing 3. As a result, the heat dissipation of the heat-generating component can be ensured. Further, it is not necessary to provide the housing 3 with a dedicated member for supporting the second housing component 54.

Further, at least a part of the support member 42 located on the outermost side of the plurality of support members 42 overlaps the area of the heat generating component when the cooling surface 3a is viewed from the lid main body 41. Therefore, the size of the housing 3 can be further reduced.

Further, the arrangement of the support members 42 on the lid main body 41 is not restricted by the heat generating parts provided on the cooling surface 3a. Therefore, each support member 42 can be provided at a position where the vibration of the substrate 55 can be suppressed to support the substrate 55. Therefore, the deflection of the substrate 55 due to the vibration of the device can be suppressed. As a result, the load applied to the substrate 55 itself and the solder joint portion of the substrate 55 can be suppressed.

Further, a first mounting surface 55a and a second mounting surface 55b are provided on the front side and the back side of the substrate 55, respectively. Then, the mounting components are separately mounted on the front side and the back side of the board 55. Therefore, the external dimensions of the substrate 55 can be reduced. As a result, the power conversion device 1 can be further miniaturized.

Further, a plurality of mounting components mounted on the first mounting surface 55a are arranged in a space between each of the reactor 51, the switching element 52, and the transformer 53, which are heat generating components, and the substrate 55. Further, in the space between each of the heat generating components and the substrate 55, mounting components having a height corresponding to the distance between the heat generating components and the substrate 55 are individually arranged. Therefore, the substrate 55 can be brought closer to each heat generating component. As a result, the power conversion device 1 can be further miniaturized.

Further, the screw holes provided in the pedestal portions 322 to 324 are screw holes that do not reach the groove 36. Further, the screw holes formed in each support member 42 are screw holes that do not penetrate the lid body 41. As a result, the sealed state of the groove 36 and the power conversion unit 5 can be ensured. In addition, it is possible to prevent dust, dirt, water, etc. from entering the power conversion unit 5.

Further, the lid body 41 and each support member 42 are integrally formed of a single material. Therefore, as compared with the case where each support member 42 is assembled to the lid main body 41, it is possible to suppress variations in the height of the tip surface of each support member 42. Therefore, the deflection of the substrate 55 attached to each support member 42 can be suppressed. As a result, the load applied to the substrate 55 itself and the solder joint portion of the substrate 55 can be suppressed.

Further, the lid member 4 is made of a metal material such as aluminum. The lid member 4 is attached to the peripheral wall portion 31 of the housing 3 by a screw member 100. Therefore, it is possible to suppress the lid member 4 itself from vibrating and bending. Therefore, it is possible to suppress the bending of the substrate 55 due to the bending of the lid member 4. As a result, the load applied to the substrate 55 itself and the solder joint portion of the substrate 55 can be further suppressed.

Further, the housing 3 and the lid member 4 are electrically connected to each other. Therefore, the electrical noise generated on the substrate 55 can be released to the housing 3 via the lid member 4.

In the first embodiment, the housing 3 and the lid member 4 are formed by die-casting using a metal material such as aluminum. However, the method of forming the housing 3 and the lid member 4 is not limited to this. For example, the housing 3 may be formed by sheet metal processing of a rigid iron plate or the like. Further, the lid member 4 may be formed by forging using a material such as iron having rigidity. In this case, the manufacturing cost of the housing 3 and the lid member 4 can be reduced without lowering the rigidity of the housing 3 and the lid member 4.

Further, in the first embodiment, the electrical insulating layer 45 is formed of an insulating sheet. However, the configuration of the electrically insulating layer 45 is not limited to this. For example, the electrically insulating layer 45 may be formed by applying an insulating coating to the back surface of the lid of the lid main body 41. This also makes it possible to obtain the same effect as that of the electrically insulating layer 45 of the first embodiment.

Further, in the first embodiment, the substrate 55 is attached to the support member 42 by a plurality of screw members 101 as fixtures. However, the fixture for attaching the substrate 55 to the support member 42 is not limited to this. For example, the substrate 55 may be attached to the support member 42 by a fixture such as a rivet or caulking. Further, the substrate 55 may be joined to the support member 42 by welding, soldering, or the like as a fixture.

Further, in the first embodiment, the lid surface of the lid main body 41 is flat. The screw holes of each support member 42 are formed so as not to penetrate the lid main body 41. However, the configuration of the screw holes formed in each support member 42 is not limited to this. For example, a convex portion may be formed on the surface of the lid of the lid main body 41 at a position corresponding to each support member 42. Then, the screw holes formed in each support member 42 may be extended to the inside of each corresponding convex portion. As a result, the substrate 55 can be attached to each support member 42 even with the long screw member 101.

Embodiment 2.
FIG. 2 is a vertical cross-sectional view showing the power conversion device 1 according to the second embodiment of the present invention. The power conversion device 1 of the second embodiment is different from the power conversion device 1 of the first embodiment in the height of the substrate 55, each support member 42, and the arrangement of the mounting components. Other configurations are the same as those in the first embodiment.

The substrate 55 of the power conversion device 1 according to the second embodiment is an electric wiring board made of a conductive metal material. In this example, copper is used as the metal material constituting the substrate 55. In this example, the substrate 55 is a plate-shaped bus bar coated with a resin such as PPS (Polyphenylene sulfide) having electrical insulation. The first mounting surface 55a and the second mounting surface 55b of the substrate 55 are formed by partially removing the resin coating.

As shown in FIG. 2, the substrate 55 has a plurality of wiring plate portions 551 facing the lid main body 41, and a plurality of connecting portions 552 for connecting the wiring plate portions 551 adjacent to each other. .. The plurality of wiring board portions 551 are provided with a first mounting surface 55a and a second mounting surface 55b. Each connecting portion 552 is formed by bending a plate into a crank shape. One of the two wiring board portions 551 adjacent to each other is arranged at a position closer to the lid main body 41 than the other.

As shown in FIG. 1, in the power conversion device 1 of the first embodiment, mounting components are mounted on the second mounting surface 55b on the back side of the portion of the first mounting surface 55a on which a plurality of capacitors 58 are mounted. Absent. In the power conversion device 1 of the second embodiment, as shown in FIG. 2, the wiring plate portion 551 is moved to the cooling surface 3a side of the substrate 55 of the first embodiment, and the plurality of capacitors 58 are the first. 2 It is mounted on the mounting surface 55b. The connector 57 provided above the transformer 53 in the first embodiment is mounted on the first mounting surface 55a. As a result, the portion of the substrate 55 where the connector 57 is provided is reduced.

As described above, according to the power conversion device 1 of the second embodiment, the distances between each of the plurality of wiring plate portions 551 constituting the substrate 55 and the lid member 4 can be individually set. Then, the mounting components can be efficiently arranged on the substrate 55. As a result, the size of the substrate 55 can be reduced. Therefore, the power conversion device 1 can be further miniaturized.

Further, the substrate 55 of the second embodiment is formed by a plate-shaped bus bar made of copper. Therefore, the substrate 55 of the second embodiment has higher rigidity than the printed circuit board. As a result, it is possible to prevent the substrate 55 from bending due to vibration. Therefore, the load applied to the solder joint portion of the substrate 55 can be further suppressed.

In the second embodiment, the substrate 55 is made of copper. However, the material of the substrate 55 is not limited to copper. For example, as long as it is a conductive metal material, it may be a metal other than copper.

Further, in the present invention, each embodiment can be appropriately modified or omitted within the scope of the invention.

1 Power converter, 3 Housing, 3a Cooling surface, 4 Lid member, 5 Power conversion part, 31 Peripheral wall part, 32 Cooling wall part, 36 Groove (flow path), 37 Flow path cover, 41 Lid body, 42 Support member , 45 Electrical insulation layer, 51 Reactor (1st accommodation part), 52 Switching element (1st accommodation part), 53 Transformer (1st accommodation part), 54 2nd accommodation part, 55 Board (electrical wiring board), 55a 1 mounting surface, 55b second mounting surface, 56 aluminum electrolytic capacitor (mounting component), 57 connector (mounting component), 58 capacitor (mounting component), 59 control IC (mounting component), 60 resistor (mounting component), 100 ~ 104 Screw member, 321 wall member, 322-324 pedestal part, 511 reactor body, 512 reactor fixing part, 521 element body, 522 terminal part, 53 1 transformer body, 532 transformer fixing part, 551 wiring board part, 552 connecting part, 561 Aluminum electrolytic capacitor body, 562 lead part.

Claims (13)

Housing with openings,
A power conversion unit housed inside the housing and a lid member that closes the opening are provided.
The inner surface of the housing has a cooling surface facing the opening.
The power conversion unit has a plurality of first accommodating parts which are heat generating components provided on the cooling surface, and a second accommodating component provided on the lid member .
The lid member has a lid body that closes the opening and a support member that projects from the lid body toward the inside of the housing.
The second accommodating component has an electric wiring board supported by the support member and a plurality of mounting parts provided on the electric wiring board.
In the space between each of the plurality of first accommodating parts and the electric wiring board, the mounting component having a height corresponding to the distance between each of the first accommodating parts and the electric wiring board is individually provided. Power converter located in . The lid body is provided with a plurality of the support members.
Wherein at least a portion of the support member, when viewed the cooling surface from the lid body, according to claim 1 which overlaps the region of the first housing part which is located outermost among the plurality of supporting members Power converter. The power conversion device according to claim 1 or 2 , wherein the electric wiring board is a flat plate. The power conversion device according to claim 3 , wherein the electrical wiring board is a printed circuit board. Housing with openings,
The power conversion unit housed inside the housing and
A lid member that closes the opening
With
The inner surface of the housing has a cooling surface facing the opening.
The power conversion unit has a first accommodating component which is a heat generating component provided on the cooling surface and a second accommodating component provided on the lid member.
The lid member has a lid body that closes the opening and a support member that projects from the lid body toward the inside of the housing.
The second accommodating component has an electric wiring board supported by the support member and a mounting component provided on the electric wiring board.
The electric wiring board has a plurality of wiring board portions facing each other of the lid main body, and a connecting portion for connecting the wiring board portions adjacent to each other.
One of the wiring board portions adjacent to each other, located disposed have that power converter closer to the lid body than the other. The lid body is provided with a plurality of the support members.
The fifth aspect of claim 5, wherein at least a part of the support members located on the outermost side of the plurality of support members overlaps the region of the first accommodating component when the cooling surface is viewed from the lid body. Power converter. The lid body and the support member, the power conversion device according to claim 1, which consists of a metal in any of claims 6. The power conversion device according to claim 7, wherein the lid body is provided with an electrically insulating layer arranged between the lid body and the second accommodating component. The electrical wiring board, the power conversion apparatus according to any one of claims 1 to 8 which is fixed to the support member by a fastener. The fixture has an insertion portion inserted inside the support member.
The power conversion device according to claim 9, wherein the insertion portion is housed inside the lid member. The power conversion device according to claim 9 or 10, wherein the fixture is a screw member. The power conversion device according to any one of claims 1 to 11, wherein the lid member is integrally formed of a single material. The housing has a cooling wall portion provided with the cooling surface.
The power conversion device according to any one of claims 1 to 12, wherein a flow path through which a cooling fluid flows is provided in the cooling wall portion.

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