JP2019057968A - Power converter and controller-integrated rotary electric machine - Google Patents

Abstract

To provide a power converter which can improve heat dissipation of a control substrate, a capacitor substrate and electronic components mounted on them, and to provide a controller-integrated rotary electric machine.SOLUTION: A power converter 1 comprises: a switching element; a driving element 3 for drive-controlling the switching element; a control substrate 4 on which the driving element 3 is mounted; a capacitor 5 which is electrically connected to the switching element; and a capacitor substrate 6 on which the capacitor 5 is mounted. The control substrate 4 and the capacitor substrate 6 are independently arranged. The control substrate 4 and the capacitor substrate 6 are arranged not to be overlapped each other if viewed from a normal direction of the control substrate 4 and from the normal direction of the capacitor substrate 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a power converter and a controller-integrated rotating electrical machine in which a control device that is a power converter is integrated with a rotating electrical machine.

  Patent Document 1 discloses a control device-integrated rotating electrical machine in which a control device including a power conversion circuit and a rotating electrical machine are integrated. The control device in this control device-integrated rotating electrical machine has a module board (hereinafter referred to as a capacitor board) on which a capacitor is mounted, and a control board constituting a control circuit. The capacitor board and the control board are arranged with their main surfaces facing each other.

JP 2017-93080 A

  However, if the capacitor substrate and the control substrate are arranged with their main surfaces facing each other as in the above configuration, heat tends to be trapped between the two. That is, the heat generated from the electronic components mounted on the control board and the wiring formed on each board tends to be trapped between the capacitor board and the control board. Therefore, it is difficult to improve the heat dissipation of the capacitor board, the control board, and the electronic components mounted thereon.

  The present invention has been made in view of such problems, and provides a power conversion device and a controller-integrated dynamoelectric machine that can improve heat dissipation of a control board and a capacitor board and electronic components mounted thereon. It is something to try.

One embodiment of the present invention includes a switching element;
A drive element (3) for driving and controlling the switching element;
A control board (4) on which the driving element is mounted;
A capacitor (5) electrically connected to the switching element;
A capacitor board (6) on which the capacitor is mounted;
The control board and the capacitor board are provided independently of each other,
The power conversion device (1), wherein the control board and the capacitor board are arranged so as not to overlap each other when viewed from the normal direction of the control board or from the normal direction of the capacitor board. It is in.

Another aspect of the present invention is a controller-integrated rotating electrical machine (10) in which a rotating electrical machine (7) and a control device that controls driving of the rotating electrical machine are integrated.
The control device is in the control device-integrated rotating electrical machine, which is the power conversion device.

  In the power converter, the control board and the capacitor board are arranged so as not to overlap each other when viewed from the normal line direction of the control board or the normal line direction of the capacitor board. As a result, the control board and the capacitor board are arranged so that there is no portion facing each other. Therefore, the problem that heat is trapped between the control board and the capacitor board can be solved. That is, it is possible to obtain a controller-integrated dynamoelectric machine that can efficiently dissipate heat from the control board and the capacitor board and heat from electronic components mounted thereon.

  The controller-integrated rotating electrical machine includes the power conversion device as a control device that drives and controls the rotating electrical machine. Therefore, the heat from the control board and the capacitor board and the heat from the electronic components mounted thereon can be efficiently radiated.

As described above, according to the above aspect, it is possible to provide a power converter and a controller-integrated rotating electrical machine that can improve the heat dissipation of the control board and the capacitor board and the electronic components mounted thereon.
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.

Sectional explanatory drawing of the power converter device in Embodiment 1. FIG. FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1. Cross-sectional explanatory drawing of the power converter device in Embodiment 2. FIG. Cross-sectional explanatory drawing of the power converter device in Embodiment 3. FIG. Cross-sectional explanatory drawing of the power converter device in Embodiment 4. FIG. Sectional explanatory drawing of the power converter device in Embodiment 5. FIG. Cross-sectional explanatory drawing of the power converter device in Embodiment 6. FIG. Cross-sectional explanatory drawing of the power converter device in Embodiment 7. FIG. Cross-sectional explanatory drawing of the power converter device in Embodiment 8. FIG. Cross-sectional explanatory drawing of the power converter device in Embodiment 9. FIG.

(Embodiment 1)
An embodiment according to a power conversion device will be described with reference to FIGS. 1 and 2.
The power conversion device 1 according to the present embodiment includes a semiconductor module 2 with a built-in switching element, a drive element 3, a control board 4, a capacitor 5, and a capacitor board 6.

The drive element 3 is an element that drives and controls the switching element. The control board 4 is a board on which the drive element 3 is mounted. The capacitor 5 is electrically connected to the switching element. The capacitor substrate 6 is a substrate on which the capacitor 5 is mounted.
The control board 4 and the capacitor board 6 are provided independently of each other.
The control board 4 and the capacitor board 6 are arranged so as not to overlap each other when viewed from the normal direction of the control board 4 and from the normal direction of the capacitor board 6.

  The normal direction means the normal direction of the main surface of each substrate. That is, the normal direction of the control board 4 is the direction of the normal line of the surface on which the drive element 3 is mounted on the control board 4. The normal direction of the capacitor substrate 6 is the normal direction of the surface of the capacitor substrate 6 on which the capacitor 5 is mounted.

  The normal direction of the control board 4 and the capacitor board 6 coincide with each other. That is, the main surface of the control substrate 4 and the main surface of the capacitor substrate 6 are arranged so as to be parallel to each other. In FIG. 1, the above-mentioned matched normal direction is indicated by an arrow Z. Note that the state in which the normal directions coincide with each other includes the normal direction of the control board 4 and the normal direction of the capacitor board 6 if they are slightly parallel to each other even if they are slightly inclined.

  The control board 4 and the capacitor board 6 are arranged at positions where at least a part thereof overlaps when viewed from any direction orthogonal to the normal direction. That is, when viewed from the direction parallel to the control board 4 and the control board 4 and the capacitor board 6 are aligned, at least a part of the control board 4 in the thickness direction and at least one of the capacitor boards 6 in the thickness direction. The parts overlap each other. In particular, in the present embodiment, the control board 4 and the capacitor board 6 are arranged side by side so that their positions in the normal direction are substantially equal. And even if the control board 4 and the capacitor | condenser board | substrate 6 mutually shift | deviate in the normal line direction, it has shifted | deviated below the thickness of these board | substrates. In the present embodiment, the thickness of the control board 4 and the thickness of the capacitor board 6 are substantially equal. The end face of the control board 4 and the end face of the capacitor board 6 are opposed to each other.

  The drive element 3 is mounted on the surface of the control board 4 opposite to the switching element. That is, the drive element 3 is disposed on the opposite side of the semiconductor module 2 with the control board 4 interposed therebetween. In the following description, the side on which the drive element 3 is mounted with respect to the control board 4 is appropriately referred to as the lower side, and the opposite side is referred to as the upper side.

  The control board 4, the drive element 3, the capacitor board 6, and the capacitor 5 are accommodated in the casing 11 of the power conversion device 1. The semiconductor module 2 is also accommodated in the housing 11. The housing | casing 11 consists of resin moldings, for example. An electronic component 15 other than the drive element 3 mounted on the control board 4 is also accommodated in the housing 11. The electronic component 15 mounted on the control board 4 includes a field module, a microcomputer, and the like that constitute a field circuit in addition to the drive element 3.

As shown in FIG. 2, the power conversion device 1 of the present embodiment includes one control board 4 and two capacitor boards 6. And when it sees from the normal line direction of the control board 4, the external shape of the power converter device 1 becomes a substantially circular shape. That is, the outer shape of the housing 11 is substantially circular. Inside the casing 11, the control board 4 is arranged in a substantially arc shape so as to follow the outer shape of the casing 11. Two capacitor boards 6 are arranged so as to be adjacent to both ends in the circumferential direction of the arc of the control board 4.
The number of the control board 4 and the capacitor board 6 is not particularly limited.

  The power conversion device 1 can be configured to be connected between, for example, a direct current battery and a three-phase alternating current rotating electrical machine and perform power conversion between the two. That is, the switching element in the semiconductor module 2 constitutes a power conversion circuit. The power conversion circuit includes a plurality of switching elements. And it is comprised so that electric power conversion can be performed by carrying out ON / OFF control of the some switching element suitably with the drive element 3. FIG. The capacitor 5 functions as a smoothing capacitor that smoothes the voltage applied to the power conversion circuit. The above-described field circuit is a circuit for supplying a field current to the rotating electrical machine.

Next, the effect of this embodiment is demonstrated.
In the power conversion device 1, the control board 4 and the capacitor board 6 are arranged so as not to overlap each other when viewed from the normal direction of the control board 4 or from the normal direction of the capacitor board 6. . As a result, the control board 4 and the capacitor board 6 are arranged so that there is no portion facing each other. Therefore, the problem that heat is trapped between the control board 4 and the capacitor board 6 can be solved. That is, the heat from the control board 4 and the capacitor board 6 and the heat from the electronic component 15 mounted thereon can be efficiently radiated.

  The normal direction of the control board 4 and the capacitor board 6 coincide with each other. Thereby, the heat dissipation of the control board 4 and the capacitor | condenser board | substrate 6, and the electronic component 15 mounted in these can be improved further.

  The control board 4 and the capacitor board 6 are arranged at positions where at least a part thereof overlaps when viewed from any direction orthogonal to the normal direction. Thereby, size reduction of the power converter device 1 can be achieved in the normal direction.

  The drive element 3 is mounted on the surface of the control board 4 opposite to the semiconductor module 2 provided with the switching element. Thereby, it can suppress that the drive element 3 receives the influence of the heat | fever of a switching element, and also the influence of the noise of a switching element.

  In particular, in the present embodiment, the capacitor 5 and the semiconductor module 2 are disposed above the control board 4, and the drive element 3 is disposed below the control board 4. Therefore, the high-voltage circuit unit through which the high-voltage current flows and the control circuit unit including the drive element 3 can be arranged on the opposite sides with the control board 4 interposed therebetween. Thereby, the superimposition of the noise from a high voltage circuit part to a control circuit part can be suppressed.

  As described above, according to the present embodiment, it is possible to provide a power conversion device that can improve the heat dissipation of the control board and the capacitor board and the electronic components mounted thereon.

(Embodiment 2)
As shown in FIG. 3, the present embodiment is a form of the power conversion device 1 in which the control substrate 4, the drive element 3, the capacitor substrate 6, and the capacitor 5 are sealed with a sealing resin 12.

  As in the first embodiment, the control board 4, the drive element 3, the capacitor board 6, and the capacitor 5 are accommodated in the casing 11 of the power conversion device 1. A sealing resin 12 is filled in a housing 11 in which the control board 4, the drive element 3, the capacitor board 6, and the capacitor 5 are accommodated. As a result, the control substrate 4, the drive element 3, the capacitor substrate 6, and the capacitor 5 are all sealed in the sealing resin 12. In addition, the electronic component 15 other than the driving element 3 mounted on the control board 4 and the semiconductor module 2 are also sealed with the sealing resin 12.

  The sealing resin 12 is made of a material having electrical insulation, heat resistance, and thermal conductivity. In addition to the above characteristics, the sealing resin 12 preferably further has waterproofness and vibration resistance. As the sealing resin 12, for example, an epoxy resin can be used. The sealing resin 12 is not limited to epoxy but may be silicone, urethane, or the like.

  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 control substrate 4, the drive element 3, the capacitor substrate 6, and the capacitor 5 are sealed with a sealing resin 12. Thereby, the heat of the control substrate 4, the drive element 3, the capacitor substrate 6, and the capacitor 5 can be radiated to the sealing resin 12. Therefore, the lifetime of the driving element 3 and the capacitor 5 can be extended and the reliability can be improved. In addition, vibration of the control board 4 and the capacitor board 6 can be suppressed, and weather resistance can be improved.
In addition, the same effects as those of the first embodiment are obtained.

(Embodiment 3)
As shown in FIG. 4, the present embodiment is a form of the power conversion apparatus 1 in which the control board 4 and the capacitor board 6 are arranged at different positions in the normal direction.
In the normal direction, the capacitor 5 is mounted on the surface of the capacitor substrate 6 opposite to the control substrate 4.
In the normal direction, the drive element 3 is mounted on the surface of the control board 4 opposite to the capacitor board 6.

In the present embodiment, the capacitor substrate 6 is disposed above the control substrate 4 in the normal direction of the control substrate 4. The capacitor 5 is mounted on the upper surface of the capacitor substrate 6. The drive element 3 is mounted on the lower surface of the control board 4. Main electronic components 15 other than the drive element 3 mounted on the control board 4 are also mounted on the lower surface of the control board 4.
Other configurations are the same as those of the first embodiment.

  In the present embodiment, the capacitor 5 is mounted on the surface of the capacitor substrate 6 opposite to the control substrate 4 in the normal direction. Therefore, heat interference between the control board 4 and the capacitor 5 can be suppressed.

In the normal direction, the drive element 3 is mounted on the surface of the control board 4 opposite to the capacitor board 6. Therefore, heat interference between the driving element 3 and the capacitor substrate 6 can be suppressed.
In addition, the same effects as those of the first embodiment are obtained.

(Embodiment 4)
As shown in FIG. 5, the present embodiment is a form of the power conversion device 1 in which the capacitor 5 is arranged so that the longitudinal direction is along the main surface of the capacitor substrate 6.
The main body portion of the capacitor 5 mounted on the capacitor substrate 6 is disposed so that the longitudinal direction thereof is along the main surface of the capacitor substrate 6. A terminal 51 protrudes from one end in the longitudinal direction of the main body portion of the capacitor 5. The terminal 51 is erected toward the capacitor substrate 6 at the protruding end. That is, the terminal 51 is bent at a substantially right angle on the way. The capacitor 5 is electrically connected to the capacitor substrate 6 by the terminal 51.
Other configurations are the same as those of the first embodiment.

In the present embodiment, the height of the module composed of the capacitor substrate 6 and the capacitor 5 in the normal direction of the capacitor substrate 6 can be suppressed. Therefore, it becomes easy to reduce the height of the power conversion device 1.
In addition, the same effects as those of the first embodiment are obtained.

(Embodiment 5)
As shown in FIG. 6, the present embodiment is a form of the power conversion device 1 in which the capacitor substrate 6 is disposed above the control substrate 4 in the normal direction.
The capacitor 5 is disposed so that the longitudinal direction thereof is along the main surface of the capacitor substrate 6. That is, the present embodiment corresponds to a combination of the above-described third and fourth embodiments.
Other configurations are the same as those in the third or fourth embodiment.

In the present embodiment, heat interference between the electronic components 15 and between the electronic components 15 and the substrate can be suppressed while reducing the height of the power conversion device 1.
In addition, the same effects as those of the first embodiment are obtained.

(Embodiment 6)
As shown in FIG. 7, the present embodiment is a form of the power conversion device 1 in which an electronic component 15 other than the capacitor 5 is mounted on the capacitor substrate 6.
The electronic component 15 mounted on the capacitor substrate 6 can be, for example, a field module.
In the present embodiment, the electronic component 15 is mounted on the surface of the capacitor substrate 6 opposite to the capacitor 5.
Other configurations are the same as those of the first embodiment.

In the present embodiment, the wiring between the capacitor 5 and the electronic component 15 can be shortened.
In addition, by mounting the electronic component 15 other than the capacitor 5 on the capacitor substrate 6, the degree of freedom in design such as the shape and size of the substrate and the arrangement of the electronic components 15 can be improved.
In addition, the same effects as those of the first embodiment are obtained.

  The electronic component 15 other than the capacitor 5 may be mounted on the same surface of the capacitor substrate 6 as the capacitor 5. A plurality of electronic components 15 other than the capacitor 5 may be mounted on the capacitor substrate 6.

(Embodiment 7)
As shown in FIG. 8, the present embodiment is a form of a controller-integrated rotating electrical machine 10 in which a rotating electrical machine 7 and a control device that drives and controls the rotating electrical machine 7 are integrated.
A control apparatus is the power converter device 1 of Embodiment 1 mentioned above.

  The rotating electrical machine 7 includes a rotor 72 that rotates integrally with a shaft 71, and a stator 73 that is disposed on the outer periphery of the rotor 72. The rotor 72 rotates relative to the stator 73 by supplying AC power to the rotating electrical machine 7 from the power conversion device 1 that is a control device. Further, AC power generated in the rotating electrical machine 7 by the rotation of the rotor 72 using an internal combustion engine or the like as a power source can be converted into DC power in the power converter 1.

  The normal direction of the capacitor substrate 6 coincides with the stacking direction of the power converter 1 with respect to the rotating electrical machine 7. The capacitor 5 is mounted on the surface of the capacitor substrate 6 that faces away from the rotating electrical machine 7.

In the present embodiment, the control device (that is, the power conversion device 1) is stacked in the axial direction of the shaft 71 with respect to the rotating electrical machine 7. Therefore, the normal line direction of the capacitor substrate 6 coincides with the axial direction of the shaft 71.
Other configurations are the same as those of the first embodiment. In the following, the axial direction of the shaft 71 is also referred to as the axial direction of the rotating electrical machine 7.

  The control apparatus-integrated dynamoelectric machine 10 of this embodiment is obtained by integrating the power conversion apparatus 1 of Embodiment 1 and the dynamoelectric machine 7. Therefore, the control apparatus-integrated dynamoelectric machine 10 having excellent heat dissipation of the control board 4 and the capacitor board 6 and the electronic component 15 mounted thereon can be obtained.

The capacitor 5 is mounted on the surface of the capacitor substrate 6 facing away from the rotating electrical machine 7. Therefore, heat reception of the capacitor 5 from the rotating electrical machine 7 can be suppressed. Thereby, the lifetime of the capacitor 5 can be extended.
In addition, the same effects as those of the first embodiment are obtained.

  In the seventh embodiment, the drive element 3 may be mounted on the upper surface of the control board 4. That is, for example, when the influence of the heat of the rotating electrical machine 7 on the drive element 3 is particularly concerned, it may be possible to mount the control board 4 on the surface opposite to the rotating electrical machine 7.

(Embodiment 8)
As shown in FIG. 9, this embodiment is also a form of a controller-integrated rotating electrical machine 10 in which the rotating electrical machine 7 and a control device that controls driving of the rotating electrical machine 7 are integrated.
The control apparatus-integrated dynamoelectric machine 10 of this embodiment has a cooling air flow path 13. The cooling air passage 13 is a passage through which the introduced outside air flows through the control device (that is, the power conversion device 1) and the rotating electrical machine 7. The control board 4 is arranged so as to face a part of the cooling air flow path 13. The drive element 3 is mounted on the surface of the control board 4 on the cooling air flow path 13 side.

  The cooling air flow path 13 is configured to be able to introduce outside air from the gap 131 between the rotating electrical machine 7 and the power conversion device 1. Therefore, a part of the cooling air flow path 13 faces the power conversion device 1. Thereby, the outside air (that is, the cooling air) passing through the cooling air flow path 13 is configured to cool the power conversion device 1.

  Further, the outside air introduced into the cooling air flow path 13 is folded back toward the rotating electrical machine 7 on the upper side of the rotor 72 and discharged from an opening 132 provided in the housing 70 of the rotating electrical machine 7. On the upper side of the rotor 72, a fan 74 that rotates integrally with the rotor 72 is provided. The fan 74 forms an air flow in the cooling air flow path 13. That is, as the fan 74 rotates together with the rotor 72, outside air is sucked from the gap 131, passes through the cooling air flow path 13, and is discharged from the opening 132. Then, when the outside air passes through the cooling air flow path 13, the power converter 1 and the rotating electrical machine 7 are cooled.

The normal direction of the control board 4 also coincides with the stacking direction of the power converter 1 with respect to the rotating electrical machine 7. That is, the normal direction of both the control board 4 and the capacitor board 6 coincides with the axial direction of the rotating electrical machine 7.
Other configurations are the same as those of the first embodiment.

In the present embodiment, the control board 4 is disposed so as to face a part of the cooling air flow path 13. The drive element 3 is mounted on the surface of the control board 4 on the cooling air flow path 13 side. Thereby, the drive element 3 can be efficiently cooled by the cooling air flowing through the cooling air flow path 13.
In addition, the same effects as those of the first embodiment are obtained.

  In the present embodiment, the casing 11 of the power conversion device 1 may be filled with the sealing resin 12, but in this case, the drive element 3 does not directly face the cooling air flow path 13. . That is, the sealing resin 12 is interposed between the drive element 3 and the cooling air flow path 13. However, even in this aspect, the heat of the drive element 3 can be radiated to the cooling air flow path 13 through the sealing resin 12. Therefore, even in such an aspect, a certain effect can be obtained. That is, the control board 4 being disposed so as to face a part of the cooling air flow path 13 includes a case where a member having thermal conductivity is interposed therebetween.

(Embodiment 9)
In the present embodiment, as shown in FIG. 10, the capacitor 5 is also mounted on the lower surface of the capacitor substrate 6 and is a form of the controller-integrated rotating electrical machine 10.
That is, the arrangement of the capacitor 5 with respect to the capacitor substrate 6 is also arranged to face the rotating electrical machine 7 side. Thereby, the capacitor 5 as well as the drive element 3 is arranged to face the cooling air flow path 13 side.
In the present embodiment, the capacitor substrate 6 is disposed above the control substrate 4.
Other configurations are the same as those of the eighth embodiment.

  In the present embodiment, the capacitor 5 as well as the drive element 3 are arranged to face the cooling air flow path 13 side. Therefore, both the drive element 3 and the capacitor 5 can be efficiently cooled by the cooling air flowing through the cooling air flow path 13.

Further, the capacitor substrate 6 is disposed above the control substrate 4. As a result, the capacitor 5 that is relatively large in size as compared with the drive element 3 or the like can be easily housed in the housing 11. As a result, the power converter 1 can be easily reduced in height. As a result, the controller-integrated rotating electrical machine 10 can be easily downsized.
In addition, the same effects as those of the first embodiment are obtained.

  The plurality of embodiments may be appropriately combined with each other. For example, the second embodiment can be combined with any one of the third to ninth embodiments.

  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.

DESCRIPTION OF SYMBOLS 1 Power converter 10 Control apparatus integrated rotary electric machine 2 Semiconductor module 3 Drive element 4 Control board 5 Capacitor 6 Capacitor board 7 Rotating electric machine

Claims (10)

A switching element;
A drive element (3) for driving and controlling the switching element;
A control board (4) on which the driving element is mounted;
A capacitor (5) electrically connected to the switching element;
A capacitor board (6) on which the capacitor is mounted;
The control board and the capacitor board are provided independently of each other,
The power conversion device (1), wherein the control board and the capacitor board are arranged so as not to overlap each other when viewed from the normal direction of the control board or from the normal direction of the capacitor board. .   The power conversion device according to claim 1, wherein the control board and the capacitor board have normal directions that coincide with each other.   The power conversion device according to claim 2, wherein the control board and the capacitor board are arranged at a position where at least a part thereof overlaps when viewed from any direction orthogonal to the normal direction.   The control board and the capacitor board are arranged at different positions in the normal direction, and the capacitor is mounted on a surface of the capacitor board opposite to the control board in the normal direction. The power conversion device according to claim 2.   The control board and the capacitor board are arranged at positions different from each other in the normal direction. In the normal direction, the drive element is mounted on a surface of the control board opposite to the capacitor board. The power converter according to claim 2 or 4.   The power converter according to any one of claims 1 to 5, wherein the drive element is mounted on a surface of the control board opposite to the switching element.   The power converter according to any one of claims 1 to 6, wherein the control board, the drive element, the capacitor board, and the capacitor are sealed with a sealing resin (12). A control device-integrated dynamoelectric machine (10) in which a dynamoelectric machine (7) and a control device for driving and controlling the dynamoelectric machine are integrated,
The said control apparatus is a control apparatus integrated rotary electric machine which is a power converter device as described in any one of Claims 1-7.   The normal direction of the capacitor substrate coincides with the stacking direction of the power converter with respect to the rotating electrical machine, and the capacitor is mounted on the surface of the capacitor substrate facing the opposite side of the rotating electrical machine. The controller-integrated rotating electrical machine according to claim 8.   The normal direction of the control board coincides with the stacking direction of the power conversion device with respect to the rotating electrical machine, and has a cooling air flow path (13) through which the introduced outside air flows through the control device and the rotating electrical machine. The control board is disposed so as to face a part of the cooling air flow path, and the drive element is mounted on a surface of the control board on the cooling air flow path side. Control device-integrated rotary electric machine.

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