Control device integrated type rotary electric machine

Abstract

To provide a control device integrated type rotary electric machine in which shortage of strength can be reduced without the increase in size, and leakage of a cooling medium can be prevented to improve the cooling performance.SOLUTION: A control device integrated type rotary electric machine includes a rotary electric machine 40 and a power conversion device 50. In a cooler 36 of the power conversion device 50, a flow path member 30 has: a first surface 301 having a flow path groove 303; and a second surface 302 thermally connected to a power conversion element 18, wherein a first hole 305 having an inner end 315 connected to the flow path groove 303, a second hole 304 having an inner end 314 connected to the first hole 305, and an outer end 324 open to the outside of the flow path member 30 and having a diameter W2 larger than a diameter W1 of the first hole 305 are formed in two positions in a circumferential direction of the flow path groove 303. In the first surface 301, a recessed portion 306 which is the whole circumference along an edge of the flow path groove 303 and does not overlap the second hole 304 in an axial direction is formed, and a seal portion 32 is formed in the recessed portion 306, an inflow tube 34 and an outflow tube 33 are inserted to the second hole 304, and are disposed outside the flow path member 30.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present disclosure relates to a control device integrated rotating electrical machine.

Background Art

[0002] Conventionally, a control device integrated rotating electrical machine in which a rotating electrical machine having a rotor and a stator and a power conversion device for controlling the power supplied to the rotating electrical machine are integrated is mounted on a vehicle such as an automobile, for example. The power conversion device is provided with a cooler for cooling a power conversion unit that generates a large amount of heat. As the structure of the cooler, for example, there is one disclosed in Patent Document 1. The cooler described in Patent Document 1 has a case having a through hole, and this through hole serves as a refrigerant passage. A connecting pipe having an outer diameter larger than the inner diameter of the through hole is inserted into the through hole.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The conventional control device integrated rotating electrical machine has the following problems. When inserting a connecting pipe into a through hole, if there are irregularities on the fitting surface, a gap will be formed and water will leak, so it is necessary to provide a fitting hole by cutting. When cutting is performed, if the housing has cavities such as casting nests inside, for example, the cavities may be exposed to the fitting surface, and there is a possibility that the cooling medium will leak through the exposed cavities and the cavities inside the housing. Although it is also possible to block the cavities exposed on the fitting surface by passing the connecting pipe through, it is necessary to make the surface in contact with the connecting pipe have the same diameter. If there is a concave shape around the fitting hole, a thin-walled portion will be formed.

[0005] Since the control device integrated rotating electric machine attached to the vehicle is vibrated during vehicle travel, there has been a problem that such a thin-walled portion is damaged due to insufficient strength. In order to avoid forming a thin-walled portion with the connecting pipe penetrating therethrough, the housing must be thickened outward when viewed from the connecting pipe, so that the size of the control device integrated rotating electric machine becomes large. Since there is a limit to the size of the space for attaching the control device integrated rotating electric machine to the vehicle, there has been a problem that it cannot be attached if it becomes large. Further, when there is a concave shape around the fitting hole, there is a problem that the metal-to-metal heat conduction between the connecting pipe and the housing decreases.

[0006] The present disclosure discloses a technique for solving the above problems, and an object thereof is to provide a control device integrated rotating electric machine capable of reducing insufficient strength without increasing the size of the control device integrated rotating electric machine and preventing leakage of a cooling medium to improve the cooling performance of the power conversion device.

Means for Solving the Problems

[0007] The control device integrated rotating electric machine of the present disclosure is a control device integrated rotating electric machine including a rotating electric machine having a rotor and a stator, and a power conversion device arranged in parallel with the rotating electric machine in the axial direction of the rotating electric machine and supplying power to the rotating electric machine, wherein the power conversion device has a power conversion element that converts a current supplied to the rotating electric machine and a cooler that cools the power conversion element with a cooling medium, the cooler has a channel member that is combined to form a channel for the cooling medium, a lid, an inflow pipe for the cooling medium, and an outflow pipe for the cooling medium, the channel member has a first surface facing the rotating electric machine side in the axial direction and having a channel groove extending in the circumferential direction of the rotating electric machine, has a second surface facing the side opposite to the rotating electric machine in the axial direction and thermally connected to the power conversion element, A first hole whose inner end communicates with the flow path groove, and a second hole whose inner end communicates with the first hole, whose outer end opens to the outside of the flow path member, and whose diameter is larger than that of the first hole are formed at two locations in the circumferential direction of the flow path groove. A recess is formed on the first surface along the entire circumference along the edge of the flow path groove so as not to overlap with the second hole in the axial direction. The lid is installed so as to close the flow path groove and the recess. A seal portion for sealing between the first surface and the lid is formed in the recess. The inner end sides of the inflow pipe and the outflow pipe are inserted into the second hole, and the outer peripheral surfaces of the inflow pipe and the outflow pipe are respectively arranged in contact with the inner peripheral surface of the second hole, and the outer end sides are arranged outside the flow path member.

Advantages of the Invention

[0008] According to the control device integrated rotating electric machine of the present disclosure, it is possible to reduce the lack of strength without increasing the size of the control device integrated rotating electric machine, and to prevent leakage of the cooling medium and improve the cooling performance of the power conversion device.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Figure 18

Embodiments for Carrying Out the Invention

[0010] Embodiment 1. The control device integrated rotating electrical machine according to Embodiment 1 will be described. FIG. 1 is a cross-sectional view showing the configuration of the rotating electrical machine according to the present embodiment. Note that FIG. 1 is a view showing the cross-section taken along line A-A shown in FIG. 2. The right side of the paper surface of FIG. 1 is the front side of the control device integrated rotating electrical machine 1 and is the load side of the control device integrated rotating electrical machine 1. The left side of the paper surface of FIG. 1 is the rear side of the control device integrated rotating electrical machine 1, that is, the anti-load side of the control device integrated rotating electrical machine 1. FIG. 2 is a plan perspective view showing the configuration of the power conversion device of the control device integrated rotating electrical machine shown in FIG. 1 as viewed from the rear side. Note that in FIG. 2, the rear cover 3 is not shown.

[0011] FIG. 3 is a partial cross-sectional view for explaining the connection relationship between the stator and the power conversion device of the control device integrated rotating electrical machine shown in FIG. 1. Note that FIG. 3 shows a cross-section of a location different from that of FIG. 1. FIG. 4 is a plan view showing the configuration of the power conversion device of the control device integrated rotating electrical machine shown in FIG. 1 with the cover of the cooler removed as viewed from the front side. Arrow B in FIG. 4 indicates the flow of the cooling medium. FIG. 5 is a cross-sectional view showing a partial configuration of the cooler of the control device integrated rotating electrical machine shown in FIG. 1. FIG. 5 is a view showing the configuration of location C in FIG. 1. FIG. 6 is a cross-sectional view showing the configuration before the outflow pipe of the cooler shown in FIG. 5 is installed. Note that in FIGS. 5 and 6, the front side and the rear side are shown so that the positional relationship with FIG. 1 is clear.

[0012] Also, in the following description, the direction of the axis 211 of the rotating electrical machine 40 may be referred to as the "axial direction of the rotating electrical machine 40" and simply as the "axial direction". Also, the "radial direction of the rotating electrical machine 40" may be simply referred to as the "radial direction". The "circumferential direction of the rotating electrical machine 40" may be simply referred to as the "circumferential direction". Also, at other locations other than the rotating electrical machine 40, the description will be based on these directions.

[0013] As shown in FIGS. 1 and 2, the integrated control device rotating electrical machine 1 includes a rotating electrical machine 40 and a power conversion device 50. The power conversion device 50 supplies power to the rotating electrical machine 40. The power conversion device 50 is arranged in parallel with the rotating electrical machine 40 in the axial direction. The power conversion device 50 is arranged on the rear side of the rotating electrical machine 40 in the axial direction. The power conversion device 50 is fixed to the rotating electrical machine 40. Thus, the rotating electrical machine 40 and the power conversion device 50 are integrated with each other.

[0014] The rotating electrical machine 40 functions as an electric motor that drives an internal combustion engine (not shown) outside the integrated control device rotating electrical machine 1, or as a generator that is driven by the internal combustion engine to generate electricity. The rotating electrical machine 40 has a rotating shaft 2, a rotor 4, a stator 5, and a bracket 6. The rotor 4 is rotatably provided with respect to the stator 5. The rotor 4 rotates integrally with the rotating shaft 2. The rotor 4 has a field core 41 and a field winding 42 attached to the field core 41.

[0015] The stator 5 is arranged outside the rotor 4 in the radial direction. The stator 5 has a stator core 51 and a plurality of phase armature windings 52 attached to the stator core 51. The plurality of phase armature windings 52 are constituted by, for example, one set of three-phase windings or two sets of three-phase windings. However, the configuration of the plurality of phase armature windings 52 is not limited to these, and is appropriately set according to the type of the integrated control device rotating electrical machine 1.

[0016] The bracket 6 is configured to accommodate the rotor 4 and the stator 5 and rotatably hold the rotating shaft 2. The bracket 6 has a front bracket 62 and a rear bracket 61. The front bracket 62 covers the front side of the rotor 4 and the stator 5. The front bracket 62 rotatably supports the front side of the rotating shaft 2 via a bearing 7. The rear bracket 61 covers the rear side of the rotor 4 and the stator 5. The rear bracket 61 rotatably supports the rear side of the rotating shaft 2 via a bearing 8.

[0017] The front bracket 62 and the rear bracket 61 are arranged at an axial interval from each other. The front bracket 62 and the rear bracket 61 are connected to each other by a plurality of bolts 9. The front end 22 of the rotating shaft 2 protrudes from the front bracket 62 and the bearing 7. A pulley 10 is provided at the end 22 of the rotating shaft 2. The pulley 10 is connected to an internal combustion engine via a belt (not shown).

[0018] When the control device integrated rotating electrical machine 1 functions as an electric motor, torque is transmitted from the rotor 4 to the internal combustion engine via the pulley 10 and the belt. When the control device integrated rotating electrical machine 1 functions as a generator, torque is transmitted from the internal combustion engine to the rotor 4 via the belt and the pulley 10. The rear end 23 of the rotating shaft 2 protrudes from the rear bracket 61 and the bearing 8. The end 23 of the rotating shaft 2 is disposed in a space 11 that axially penetrates the central portion of the power conversion device 50.

[0019] A slip ring 12 is provided at the end 23 of the rotating shaft 2. The slip ring 12 is provided along the outer circumference of the rotating shaft 2. The slip ring 12 is electrically connected to the field winding 42. A brush 13 is provided outside the rotating shaft 2 in the radial direction. The brush 13 slides on the slip ring 12 as the rotating shaft 2 rotates. The brush 13 and the slip ring 12 are electrically connected via a sliding contact. The brush 13 is held by a brush holder 14. The brush holder 14 is disposed in the space 11 and fixed to the power conversion device 50. A field current is supplied from the power conversion device 50 to the field winding 42 through the brush 13 and the slip ring 12.

[0020] In the manufacturing process of the control device integrated rotating electric machine 1, after the power conversion device 50 is attached to the rotating electric machine 40 and before the rear cover 3, which will be described later, is attached to the power conversion device 50, the brush holder 14 is attached. An air-cooling fan 15 is provided on the front side of the field core 41. The air-cooling fan 15 has a plurality of blades. Each of the plurality of blades is fixed to the end face on the front side of the field core 41. The air-cooling fan 15 rotates integrally with the rotor 4.

[0021] An air-cooling fan 16 is provided on the rear side of the field core 41. The air-cooling fan 16 has a plurality of blades. Each of the plurality of blades is fixed to the end face on the rear side of the field core 41. The air-cooling fan 16 rotates integrally with the rotor 4. When the air-cooling fan 15 and the air-cooling fan 16 rotate with the rotation of the rotor 4, cooling air is generated. The cooling air flows through the space inside the front bracket 62 and the rear bracket 61. The rotor 4 and the stator 5 are cooled by the cooling air. A gap is provided between the rear bracket 61 and the cooler 36 provided in the power conversion device 50. The above-mentioned cooling air also flows through this gap. The cooler 36 is also cooled by the cooling air.

[0022] A detection sensor 17 for detecting the magnetic pole position is provided in the space 11. The detection sensor 17 has a sensor stator 171 and a sensor rotor 172. The sensor rotor 172 is provided at the end 23 of the rotating shaft 2. The sensor rotor 172 is located between the bearing 8 and the slip ring 12 in the axial direction. The sensor rotor 172 rotates integrally with the rotating shaft 2. The sensor rotor 172 is composed of an iron core. The sensor stator 171 is fixed to the power conversion device 50. The sensor stator 171 is arranged coaxially with the sensor rotor 172. The detection sensor 17 detects the magnetic pole position of the rotor 4 based on the position of the sensor rotor 172.

[0023] The power conversion device 50 is disposed on the rear side of the rear bracket 61 in the axial direction. The power conversion device 50 is fixed to the rear bracket 61. The power conversion device 50 includes a power conversion element 18, a field power conversion element 19 (see FIG. 2), a control module 20, a cooler 36, and a case 21.

[0024] As shown in FIG. 2, in the present embodiment, six power conversion elements 18 are provided, but the number of power conversion elements 18 is not limited thereto. The power conversion element 18 converts a stator current supplied to the armature winding 52. The power conversion element 18 includes a switching element and a peripheral circuit. The switching element is disposed on a lead frame forming an electrical wiring. The switching element, together with the peripheral circuit, is sealed with a resin material. The power conversion element 18 has an AC (Alternate Current) terminal 181, a ground terminal 182, an input terminal 183, and a control terminal 184 (see FIG. 3).

[0025] The AC terminal 181, the ground terminal 182, the input terminal 183, and the control terminal 184 are provided so as to be exposed from the resin material. As shown in FIG. 3, the AC terminal 181 is connected to the stator lead wire 53 via the terminal 221 and the terminal 231. The stator lead wire 53 is an end portion of the armature winding 52. When the rotating electric machine 40 functions as a motor, in the power conversion element 18, the on / off of the switching element is switched, so that the current supplied from the DC power supply is converted into the stator current. The converted stator current is supplied from the power conversion element 18 to the armature winding 52. When the rotating electric machine 40 functions as a generator, in the power conversion element 18, the rectification of the stator current is performed.

[0026] The field magnetic power conversion element 19 (see FIG. 2) controls the field current supplied to the field winding 42. The field magnetic power conversion element 19 has a switching element and a peripheral circuit. The switching element is disposed on a lead frame forming an electrical wiring. The switching element, together with the peripheral circuit, is sealed with a resin material. The field magnetic power conversion element 19 is connected to the field winding 42 via a terminal 24, a brush 13, and a slip ring 12. In the field magnetic power conversion element 19, by switching the on / off of the switching element, a field current supplied to the field winding 42 is generated.

[0027] The control module 20 has a control circuit that controls the power conversion element 18 and the field magnetic power conversion element 19. The control module 20 is composed of, for example, a substrate and electronic components mounted on the substrate. The control module 20 is disposed rearward of the power conversion element 18 and the field magnetic power conversion element 19 in the axial direction. The control module 20 is disposed at a distance from the power conversion element 18 and the field magnetic power conversion element 19. The control terminal 184 of the power conversion element 18 is connected to the control module 20.

[0028] The case 21 surrounds the periphery of the power conversion element 18, the field magnetic power conversion element 19, and the control module 20 from the radially outer side. The case 21 is formed of an insulating resin material. For example, polyphenylene sulfide is used as the resin material. The case 21 has the same number of terminals 221 as the power conversion element 18. The terminal 221 is a terminal for electrically connecting the power conversion element 18 and the rotating electrical machine 40. One end of the terminal 221 is electrically connected to the AC terminal 181 of the power conversion element 18. The other end of the terminal 221 protrudes outside the case 21 in the radial direction. The terminal 221 is insert-molded integrally with the case 21.

[0029] The rear cover 3 is configured to cover the power conversion element 18, the field magnetic power conversion element 19, the control module 20, and the case 21 from the rear side in the axial direction and the outer side in the radial direction.

[0030] As shown in FIG. 3, the control device integrated rotating electrical machine 1 has a connecting board 25. The connecting board 25 is provided between a rear bracket 61 and a power conversion device 50. The connecting board 25 is fixed to the rear bracket 61 by screws (not shown). The connecting board 25 includes a terminal 231. The terminal 231 is a terminal for electrically connecting the armature winding 52 and the power conversion device 50. The terminal 231 is integrally insert-molded with the connecting board 25.

[0031] The stator lead wire 53 penetrates the rear bracket 61 in the axial direction and is drawn out to the rear side of the rear bracket 61. The tip of the stator lead wire 53 is connected to one end of the terminal 231 by welding at the connection point 26. In the manufacturing process of the control device integrated rotating electrical machine 1, after the stator lead wire 53 and one end of the terminal 231 are connected, the power conversion device 50 before attaching the rear cover 3 is attached to the rear side of the rear bracket 61. The other end of the terminal 231 is connected to the other end of the terminal 221 by a screw 27 at the connection point 28.

[0032] One end of the terminal 221 is connected to the AC terminal 181 of the power conversion element 18 by welding at the connection point 29. The ground terminal 182 (see FIG. 2) of the power conversion element 18 is connected to a flow path member 30 to be described later by screws (not shown). The ground terminal 182 is electrically connected to the flow path member 30. The potential of the flow path member 30 is maintained at ground.

[0033] The cooler 36 cools the power conversion element 18 and the field power conversion element 19 using a cooling medium. The cooler 36 will be described based on FIGS. 4 to 6. Note that FIGS. 5 and 6 show only the outflow pipe 33 side to be described later, and mainly describe the outflow pipe 33 side. The inflow pipe 34 side is formed in the same manner and the description thereof will be omitted as appropriate.

[0034] As shown in FIGS. 4 to 6, the cooler 36 includes a flow path member 30, a lid 31, an inlet pipe 34 for the cooling medium, and an outlet pipe 33 for the cooling medium, which are combined to form a flow path 37 for the cooling medium. The outlet pipe 33 and the inlet pipe 34 are formed of a metal material such as iron or aluminum. The thermal conductivity of the outlet pipe 33 and the inlet pipe 34 is about 20 W / mK to 200 W / mK. The flow path member 30 has a plate-like shape. The flow path member 30 is arranged perpendicular to the axial direction. The flow path member 30 is provided on the rear side of the rear bracket 61. The flow path member 30 is arranged opposite to the rear bracket 61. The flow path member 30 is formed of a metal material such as aluminum.

[0035] The flow path member 30 has a first surface 301 and a second surface 302. The first surface 301 faces the side of the rotating electric machine 40 in the axial direction, that is, the front side. The second surface 302 faces the side opposite to the rotating electric machine 40 in the axial direction, that is, the rear side. The second surface 302 is thermally connected to the power conversion element 18 and the field power conversion element 19. Thus, the heat generated in each of the power conversion element 18 and the field power conversion element 19 is transmitted to the flow path member 30.

[0036] On the first surface 301 of the flow path member 30, a flow path groove 303 extending in the circumferential direction of the rotating electric machine 40 is formed when viewed in the axial direction. The flow path groove 303 is recessed toward the rear side in the axial direction. The flow path groove 303, together with the lid 31 and the seal portion 32, defines the flow path 37. Therefore, the flow path 37 also extends generally along the circumferential direction. A cooling medium flows through the flow path 37. As the cooling medium, for example, a liquid such as water, antifreeze, or ethylene glycol solution is used. The thermal conductivity of the cooling medium is about 0.2 W / mK to 0.7 W / mK. That is, as shown above, the thermal conductivity of the outlet pipe 33 and the inlet pipe 34 is superior to that of the cooling medium.

[0037] The flow path member 30 is formed with a first hole 305 whose inner end 315 communicates with the flow path groove 303, and a second hole 304 whose inner end 314 communicates with the first hole 305 and whose outer end 324 opens to the outside of the flow path member 30, at two circumferential positions of the flow path groove 303. Therefore, the outer end 325 of the first hole 305 and the inner end 314 of the second hole 304 are connected. The diameter W2 of the second hole 304 is formed larger than the diameter W1 of the first hole 305. In the present embodiment, although the first hole 305 and the second hole 304 are provided in the radial direction, the direction is not limited to this.

[0038] On the first surface 301 of the flow path member 30, a recess 306 is formed along the entire circumference along the edge of the flow path groove 303 so as not to overlap in the axial direction of the rotating electric machine 40 of the second hole 304. The lid 31 has a plate-like shape. The lid 31 is arranged perpendicular to the axial direction. The lid 31 is arranged to face the flow path member 30 so as to close the opening side of the flow path groove 303. The lid 31 has a facing surface 311 facing the first surface 301 of the flow path member 30. The lid 31 is located between the flow path member 30 and the rear bracket 61 in the axial direction. The lid 31 is formed of a metal material such as aluminum, like the flow path member 30.

[0039] The seal portion 32 is provided in the recess 306. The seal portion 32 is in contact with the facing surface 311 of the lid 31. As the seal portion 32, a silicone resin, an epoxy resin, or the like can be used. However, other materials can also be used as the seal portion 32. The seal portion 32 may be formed of a non-curing sealant. The outflow pipe 33 and the inflow pipe 34 are inserted into the second hole 304 with their inner ends 313, and in a state as shown in FIG. 5, the outer peripheral surfaces of the outflow pipe 33 and the inflow pipe 34 are respectively in contact with the inner peripheral surface of the second hole 304 and arranged, and the outer ends 323 are arranged outside the flow path member 30.

[0040] The cooling medium flowing into the flow path 37 from the outside flows in from the side of the inflow pipe 34 of the flow path 37 and flows toward the outflow pipe 33 side. Then, the cooling medium flows out to the outside from the outer end portion 323 of the outflow pipe 33. The cooling medium flowing through the flow path 37 takes away the heat generated by the power conversion element 18 and the field power conversion element 19 via the flow path member 30. Thereby, the power conversion element 18 and the field power conversion element 19 are cooled. Here, an example where the cooling medium flows in from the inflow pipe 34 and flows out from the outflow pipe 33 is shown, but it is not limited to this, and a case where the cooling medium has a reverse flow is also conceivable.

[0041] According to this configuration, since the diameter W1 of the first hole 305 is made smaller than the diameter W2 of the second hole 304, the outflow pipe 33 is not inserted up to the flow path groove 303, and the recess 306 is arranged in the axial direction of the first hole 305 having a small diameter W1, it is possible to avoid thinning of the flow path member 30 due to the recess 306 as compared with the case where a recess is formed in the axial direction of the second hole 304. Therefore, it is possible to suppress the increase in size of the control device integrated rotating electrical machine 1, prevent it from becoming impossible to be mounted due to the size limitation of the mounting space in the vehicle, and prevent the cooler 36 from being damaged by vibrations during vehicle travel due to insufficient strength.

[0042] Also, since the outflow pipe 33 and the inflow pipe 34 are each attached so as to directly contact the inner peripheral surface of the second hole 304, it is possible to prevent water leakage from the second hole 304. Further, since heat is conducted to the outflow pipe 33 and the inflow pipe 34 on the far side from the power conversion element 18 and the field power conversion element 19, the power conversion device 50 can be efficiently cooled. Furthermore, since the outflow pipe 33 and the inflow pipe 34 are located outside the rotating electrical machine 40, the outflow pipe 33 and the inflow pipe 34 can be cooled by the traveling wind 38 shown in FIG. 1, and heat transfer from the power conversion device 50 to the outflow pipe 33 and the inflow pipe 34 becomes easy.

[0043] In the above-described Embodiment 1, an example in which the outflow pipe 33 and the inflow pipe 34 protrude in the radial direction has been shown. However, the present invention is not limited to this. For example, as shown in FIG. 7, a case where the outflow pipe 33 and the inflow pipe 34 are formed to protrude in the axial direction is also conceivable, and the same operations as those in Embodiment 1 can be performed. The arrow D in FIG. 7 indicates the flow of the cooling medium.

[0044] According to the control device integrated rotating electric machine of Embodiment 1 configured as described above, A control device integrated rotating electric machine including a rotating electric machine having a rotor and a stator, and a power conversion device arranged in parallel with the rotating electric machine in the axial direction of the rotating electric machine and supplying power to the rotating electric machine, The power conversion device includes a power conversion element that converts a current supplied to the rotating electric machine, and a cooler that cools the power conversion element with a cooling medium. The cooler includes a flow path member that is combined to form a flow path for the cooling medium, a lid, an inflow pipe for the cooling medium, and an outflow pipe for the cooling medium. The flow path member Has a first surface facing the rotating electric machine side in the axial direction and extending in the circumferential direction of the rotating electric machine, and having a flow path groove, Has a second surface facing the side opposite to the rotating electric machine in the axial direction and to which the power conversion element is thermally connected, A first hole whose inner end communicates with the flow path groove, and a second hole whose inner end communicates with the first hole and whose outer end opens to the outside of the flow path member and has a diameter larger than that of the first hole are formed at two positions in the circumferential direction of the flow path groove. On the first surface, a recess is formed along the entire circumference along the edge of the flow path groove so as not to overlap the second hole in the axial direction. The lid is installed so as to close the flow path groove and the recess. A seal portion for sealing between the first surface and the lid is formed in the recess. Since the inner end sides of the inflow pipe and the outflow pipe are inserted into the second hole and the outer peripheral surfaces of the inflow pipe and the outflow pipe are respectively in contact with the inner peripheral surface of the second hole, and the outer end sides are arranged outside the flow path member, By not inserting the inflow pipe and the outflow pipe up to the flow path groove, the diameter of the first hole can be made smaller than the diameter of the second hole. By avoiding thinning of the flow path member due to the concave portion of the second hole, an increase in the size of the control device integrated rotating electric machine can be suppressed, preventing it from being unable to be installed due to size limitations of the mounting space in the vehicle, and preventing the cooler from being damaged by vibrations during vehicle travel due to insufficient strength. Also, since the inflow pipe and the outflow pipe are attached so as to directly contact the inner peripheral surface of the second hole, leakage of water from the second hole can be prevented, and heat is conducted from the power conversion element to the inflow / outflow pipes on the far side, enabling efficient cooling of the power conversion element. Furthermore, since the outer ends of the inflow pipe and the outflow pipe are installed outside the rotating electric machine, when installed in a vehicle, the inflow pipe and the outflow pipe are cooled by the running wind of the vehicle, improving the cooling efficiency.

[0045] In each of the following embodiments, the outflow pipe 33 side will be described as an example, but the inflow pipe 34 side is formed in the same manner, and the description thereof will be omitted as appropriate. Also, for other parts, since they are the same as those in the above-described Embodiment 1, the description thereof will be omitted as appropriate.

[0046] Embodiment 2. FIG. 8 is a cross-sectional view showing a partial configuration of a cooler of a control device integrated rotating electric machine according to Embodiment 2. Note that FIG. 8 shows a cross-section corresponding to FIG. 5 of the above-described Embodiment 1. For components having the same functions and operations as those in Embodiment 1, the same reference numerals are given and the description thereof is omitted.

[0047] As shown in FIG. 8, in this Embodiment 2, a first adhesive portion 351 is provided between the inner end portion 313 of the outflow pipe 33 and the inner peripheral surface of the second hole 304. Even if the outer peripheral surface of the outflow pipe 33 and the inner peripheral surface of the second hole 304 are arranged in contact with each other, when the linear expansion coefficients of the outflow pipe 33 and the flow path member 30 are different, according to this configuration, the gap generated due to the difference in thermal expansion is filled by the first adhesive portion 351, so the water leakage prevention effect from the second hole 304 is improved.

[0048] According to the control device integrated rotating electric machine of Embodiment 2 configured as described above, the same effects as those of Embodiment 1 are achieved, and since a first adhesive portion is provided between the inner end portions of the inflow pipe and the outflow pipe and the inner peripheral surface of the second hole, when the linear expansion coefficients of the inflow pipe and the outflow pipe are different from those of the flow path member, the gap generated due to the thermal expansion difference can be filled by the first adhesive portion, so that the water leakage prevention effect from the second hole is improved.

[0049] Embodiment 3. FIG. 9 is a cross-sectional view showing a partial configuration of a cooler of the control device integrated rotating electric machine according to Embodiment 3. Note that FIG. 9 shows a cross-section corresponding to FIG. 5 of Embodiment 1 above. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals and their descriptions are omitted.

[0050] As shown in FIG. 9, in the present embodiment, a third adhesive portion 353 is provided between the outer peripheral surface of the outflow pipe 33 and the inner peripheral surface of the second hole 304. Even if the outer peripheral surface of the outflow pipe 33 and the inner peripheral surface of the second hole 304 are arranged in contact with each other, when the linear expansion coefficients of the outflow pipe 33 and the flow path member are different, according to this configuration, the gap generated due to the thermal expansion difference can be filled by the third adhesive portion 353, so that the water leakage prevention effect from the second hole 304 is improved.

[0051] According to the control device integrated rotating electric machine of Embodiment 3 configured as described above, the same effects as those of the above embodiments are achieved, and since a third adhesive portion is provided between the outer peripheral surfaces of the inflow pipe and the outflow pipe and the inner peripheral surface of the second hole, when the linear expansion coefficients of the inflow pipe and the outflow pipe are different from those of the flow path member, the gap generated due to the thermal expansion difference can be filled by the third adhesive portion, so that the water leakage prevention effect from the second hole is improved.

[0052] Embodiment 4. FIG. 10 is a cross-sectional view showing a partial configuration of a cooler of the control device integrated rotating electric machine according to Embodiment 4. Note that FIG. 10 shows a cross-section corresponding to FIG. 5 of Embodiment 1 above. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0053] As shown in FIG. 10, in the present embodiment, a filling portion 307 that is recessed in a band shape around the inner peripheral surface is provided in the second hole 304, and the fourth adhesive portion 354 is filled in the filling portion 307. Even if the outer peripheral surface of the outflow pipe 33 and the inner peripheral surface of the second hole 304 are arranged in contact with each other at locations other than the filling portion 307, according to this configuration, when the linear expansion coefficients of the outflow pipe 33 and the flow path member 30 are different, the gap generated by the thermal expansion difference can be filled with the fourth adhesive portion 354, so that the water leakage prevention effect is improved.

[0054] Embodiment 5. FIG. 11 is a cross-sectional view showing a partial configuration of a cooler of the control device integrated rotating electric machine according to Embodiment 5. Note that FIG. 11 shows a cross-section corresponding to FIG. 5 of Embodiment 1 above. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0055] As shown in FIG. 11, in the present embodiment, a filling portion 307 is provided in the second hole 304 in the same manner as in Embodiment 4, and further, a flange 331 is provided on the outflow pipe 33. The flange 331 is formed outside the second hole 304. Then, the fifth adhesive portion 355 is filled between the filling portion 307, the flange 331, and the flow path member 30. Even if the outer peripheral surface of the outflow pipe 33 and the inner peripheral surface of the second hole 304 are arranged in contact with each other at locations other than the filling portion 307, according to this configuration, when the linear expansion coefficients of the outflow pipe 33 and the flow path member 30 are different, the gap generated by the thermal expansion difference can be filled with the fifth adhesive portion 355, so that the water leakage prevention effect is improved.

[0056] Embodiment 6. FIG. 12 is a cross-sectional view showing a partial configuration of a cooler of the control device integrated rotating electric machine according to Embodiment 6. Note that FIG. 12 shows a cross-section corresponding to FIG. 5 of Embodiment 1 above. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0057] As shown in FIG. 12, in the sixth embodiment, the outflow pipe 33 is installed such that the inner end portion 313 of the outflow pipe 33 is in contact with the edge 333 on the outer end portion 325 side of the first hole 305. According to this configuration, the outer peripheral surface of the outflow pipe 33 can be directly abutted against the entire inner peripheral surface of the second hole 304. Further, since the inner end portion 314 of the outflow pipe 433 is in contact with the edge 333 of the first hole 305, the effect of preventing water leakage from the second hole 304 is improved.

[0058] Next, a manufacturing method of the control device integrated rotating electric machine 1 according to Embodiment 6 configured as described above will be described. First, as in Embodiment 1 above, in the state of FIG. 6 before the outflow pipe 33 is mounted, when the outflow pipe 33 is attached to the second hole 304, the load and stroke when the outflow pipe 33 is moved to the edge 333 of the first hole 305 are measured, and thresholds are provided for each of the load and stroke for management.

[0059] Specifically, as shown in FIG. 12, when the inner end portion 313 of the outflow pipe 33 is provided in contact with the edge 333 of the first hole 305, since the edge 333 of the first hole 305 is inside the flow path member 30, it is not possible to visually confirm whether the outflow pipe 33 is in contact with the edge 333 of the first hole 305. Therefore, by utilizing the fact that the load rapidly rises when the outflow pipe 33 comes into contact with the edge 333 of the first hole 305, it is confirmed that the inner end portion 313 of the outflow pipe 33 is in contact with the edge 333 of the first hole 305. Further, by measuring the stroke, it is possible to prevent misjudgment due to the rise in load when a foreign object is caught.

[0060] According to the control device integrated rotating electric machine of Embodiment 6 configured as described above, the same effects as those of the above embodiments are achieved, and since the inner end portions of the inflow pipe and the outflow pipe are installed in contact with the edge on the outer end portion side of the first hole, Since the outer peripheral surfaces of the outflow pipe and the inflow pipe can directly contact the entire inner peripheral surface of the second hole, and the inner ends of the outflow pipe and the inflow pipe contact the edge of the first hole, the effect of preventing water leakage from the second hole is improved.

[0061] Embodiment 7. FIG. 13 is a cross-sectional view showing a part of the configuration of the cooler of the control device integrated rotating electric machine according to Embodiment 7. Note that FIG. 13 shows a cross-section corresponding to FIG. 5 of Embodiment 1 above. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0062] As shown in FIG. 13, in this Embodiment 7, in addition to the case where the inner end portion 313 of the outflow pipe 33 and the edge 333 of the first hole 305 are in contact with each other as in Embodiment 6 above, a second adhesive portion 352 is provided between the inner end portion 313 of the outflow pipe 33 and the outer end portion 325 of the first hole 305. Even if the outer peripheral surface of the outflow pipe 33 and the inner peripheral surface of the second hole 304 are in contact with each other, when the linear expansion coefficients of the outflow pipe 33 and the flow path member 30 are different, according to this configuration, the gap generated by the thermal expansion difference can be filled by the second adhesive portion 352, so the water leakage prevention effect from the second hole 304 is improved.

[0063] According to the control device integrated rotating electric machine of Embodiment 7 configured as described above, the same effects as those of the above embodiments are achieved, and Since a second adhesive portion is provided between the inner end portions of the inflow pipe and the outflow pipe and the outer end portion of the first hole, When the linear expansion coefficients of the inflow pipe and the outflow pipe are different from the linear expansion coefficient of the flow path member, the gap generated by the thermal expansion difference can be filled by the second adhesive portion, so the water leakage prevention effect from the second hole is improved.

[0064] Embodiment 8. FIG. 14 is a cross-sectional view showing a partial configuration of the cooler of the control device integrated rotating electrical machine according to Embodiment 8. Note that FIG. 14 shows a cross-section corresponding to FIG. 5 of Embodiment 1 above. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0065] As shown in FIG. 14, in the present embodiment, the inner diameter 332 of the outflow pipe 33 is formed to be smaller from the outer end portion 323 side toward the inner end portion 313 side in the portion inserted into the second hole 304. Further, the outer diameter 334 of the outflow pipe 33 is formed to be the same from the outer end portion 323 side to the inner end portion 313 side in the portion inserted into the second hole 304. According to this configuration, in the portion inserted into the second hole 304, the wall thickness of the outflow pipe 33 is such that the thickness on the inner end portion 313 side is thicker than the thickness on the outer end portion 323 side, so that it can adhere more firmly to the second hole 304, and the water leakage prevention effect from the second hole 304 is improved. Further, when the inner diameter 332 of the outflow pipe 33 is reduced, the flow velocity can be increased, so that the cooling performance is improved.

[0066] According to the control device integrated rotating electrical machine of Embodiment 8 configured as described above, the same effects as those of the above embodiments are achieved, and the inner diameters of the inflow pipe and the outflow pipe are formed to be smaller from the outer end portion side toward the inner end portion side in the portion inserted into the second hole, and the outer diameters of the inflow pipe and the outflow pipe are formed to be the same from the outer end portion side to the inner end portion side in the portion inserted into the second hole, so the wall thickness of the inflow pipe and the outflow pipe is thicker on the inner end portion side than on the outer end portion side, so that they can adhere more firmly to the second hole, and the water leakage prevention effect from the second hole is improved. Further, when the inner diameters of the inflow pipe and the outflow pipe are reduced, the flow velocity of the cooling medium can be increased, so that the cooling performance is improved.

[0067] Embodiment 9. FIG. 15 is a cross-sectional view showing a partial configuration of the cooler of the control device integrated rotating electrical machine according to Embodiment 9. Note that FIG. 15 shows a cross-section corresponding to FIG. 5 of Embodiment 1 above. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0068] As shown in FIG. 15, in the present embodiment, the inner end portion 313 side of the outflow pipe 33 is inserted into the first hole 305, and an insertion portion 39 having an outer peripheral surface that abuts against the inner peripheral surface of the first hole 305 is formed. According to this configuration, the cooling medium has difficulty passing between the outflow pipe 33 and the first hole 305 due to the insertion portion 39, so it becomes difficult for the cooling medium to reach the second hole 304, and the water leakage prevention effect from the second hole 304 is improved.

[0069] According to the control device integrated rotating electrical machine of Embodiment 9 configured as described above, the same effects as those of the above embodiments are achieved, and Since the insertion portion having an outer peripheral surface that is inserted into the first hole and abuts against the inner peripheral surface of the first hole is formed on the inner end portion side of the inflow pipe and the outflow pipe, it becomes difficult for the cooling medium to pass between the outflow pipe and the inflow pipe and the first hole, so it becomes difficult for the cooling medium to reach the second hole, and the water leakage prevention effect from the second hole is improved.

[0070] Embodiment 10. FIG. 16 is a cross-sectional view showing a partial configuration of the cooler of the control device integrated rotating electrical machine according to Embodiment 10. Note that FIG. 16 shows a cross-section corresponding to FIG. 5 of Embodiment 1 above. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0071] As shown in FIG. 16, in the present embodiment, the outer end portion 323 side of the outflow pipe 33 is configured in a curved pipe shape. According to this configuration, the surface area of the outflow pipe 33 can be increased without increasing the control device integrated rotating electrical machine 1 in the radial direction, so the cooling performance is improved.

[0072] According to the control device integrated rotating electrical machine of Embodiment 10 configured as described above, while achieving the same effects as those of the above-described embodiments, since the outer end portions of the inflow pipe and the outflow pipe are formed in a curved pipe shape, it is possible to increase the surface area of the inflow pipe and the outflow pipe without increasing the size of the control device integrated rotating electrical machine in the radial direction, thereby improving the cooling performance.

[0073] Embodiment 11. FIG. 17 is a cross-sectional view showing the mounting position of the control device integrated rotating electrical machine according to Embodiment 11 on a vehicle. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0074] As shown in FIG. 17, in the present embodiment, the control device integrated rotating electrical machine 1 is mounted in front of the vehicle 60. According to this configuration, the traveling wind 38 is likely to hit the outflow pipe 33 or the inflow pipe 34, so that the cooling performance is improved.

[0075] According to the control device integrated rotating electrical machine of Embodiment 11 configured as described above, while achieving the same effects as those of the above-described embodiments, since the power conversion device is installed so as to face the front side of the vehicle, the traveling wind of the vehicle is likely to hit the inflow pipe and the outflow pipe, so that the cooling performance is improved.

[0076] Embodiment 12. FIG. 18 is a partial cross-sectional view showing the configuration of the fixed portion between the power conversion device and the rotating electrical machine of the control device integrated rotating electrical machine according to Embodiment 12. FIG. 18 is a view showing the cross section taken along line E-E shown in FIG. 2. Components having the same functions and operations as those in Embodiment 1 are denoted by the same reference numerals, and their descriptions are omitted.

[0077] As shown in FIG. 18, in the present embodiment, the power conversion device 50 is fixed to the rear bracket 61 of the rotating electrical machine 40 by bolts 91 via a heat insulating member 90. For example, both the cooler 36 of the power conversion device 50 and the rear bracket 61 of the rotating electrical machine 40 are made of an aluminum die-cast material, and their thermal conductivities are both 96 W / (m·K). The heat insulating member 90 is made of a glass fiber-reinforced PPS (Poly Phenylene Sulfide) material, and its thermal conductivity is 0.5 W / (m·K).

[0078] As a result, a heat insulating member 90 having a lower thermal conductivity than the thermal conductivities of the cooler 36 and the rear bracket 61 is interposed between the cooler 36 of the power conversion device 50 and the rear bracket 61 of the rotating electrical machine 40. According to this configuration, the ratio of the average thermal conductivity between the cooler 36 of the power conversion device 50 and the rear bracket 61 of the rotating electrical machine 40 to the thermal conductivity of the heat insulating member is 1 / 10 or less, and heat transfer from the stator 5 of the rotating electrical machine 40 can be efficiently prevented, so that the cooling efficiency of the cooler 36 is improved.

[0079] According to the control device integrated rotating electrical machine of Embodiment 12 configured as described above, the same effects as those of the above embodiments are achieved, and since a heat insulating member having a lower thermal conductivity than the thermal conductivities of the cooler and the bracket of the power conversion device is interposed between the cooler of the power conversion device and the bracket of the rotating electrical machine, heat transfer from the stator of the rotating electrical machine can be prevented, so that the cooling efficiency of the cooler is improved.

[0080] Although various exemplary embodiments and examples are described in the present disclosure, the various features, aspects, and functions described in one or more of the embodiments are not limited to the application of a specific embodiment, but are applicable to the embodiments alone or in various combinations. Therefore, countless variations not illustrated are envisioned within the scope of the technology disclosed in this specification. For example, it is assumed to include cases where at least one component is modified, added, or omitted, and further, cases where at least one component is extracted and combined with components of other embodiments.

[0081] Hereinafter, aspects of the present disclosure will be collectively described as appendices.

[0082] (Appendix 1) A control device integrated rotating electrical machine including a rotating electrical machine having a rotor and a stator, and a power conversion device arranged in parallel with the rotating electrical machine in the axial direction of the rotating electrical machine and supplying power to the rotating electrical machine, wherein the power conversion device includes a power conversion element that converts a current supplied to the rotating electrical machine, and a cooler that cools the power conversion element with a cooling medium, the cooler includes a flow path member that is combined to form a flow path of the cooling medium, a lid, an inflow pipe of the cooling medium, and an outflow pipe of the cooling medium, the flow path member, has a first surface facing the rotating electrical machine side in the axial direction and having a flow path groove extending in the circumferential direction of the rotating electrical machine, has a second surface facing the side opposite to the rotating electrical machine in the axial direction and to which the power conversion element is thermally connected, a first hole whose inner end communicates with the flow path groove, and a second hole whose inner end communicates with the first hole and whose outer end opens to the outside of the flow path member and has a diameter larger than that of the first hole are formed at two positions in the circumferential direction of the flow path groove, a recess is formed on the first surface along the entire circumference along the edge of the flow path groove so as not to overlap the second hole in the axial direction, the lid is installed so as to close the flow path groove and the recess, a seal portion for sealing between the first surface and the lid is formed in the recess, The inflow pipe and the outflow pipe are arranged such that their inner end portions are inserted into the second hole and the outer peripheral surfaces of the inflow pipe and the outflow pipe are respectively in contact with the inner peripheral surface of the second hole, and their outer end portions are arranged outside the flow path member, and are a control device integrated rotating electric machine. (Appendix 2) The control device integrated rotating electric machine according to Appendix 1, further comprising a first adhesive portion between the inner end portions of the inflow pipe and the outflow pipe and the inner peripheral surface of the second hole. (Appendix 3) The control device integrated rotating electric machine according to Appendix 1 or Appendix 2, wherein the inner end portions of the inflow pipe and the outflow pipe are installed in contact with the edge on the outer end portion side of the first hole. (Appendix 4) The control device integrated rotating electric machine according to Appendix 3, further comprising a second adhesive portion between the inner end portions of the inflow pipe and the outflow pipe and the outer end portion of the first hole. (Appendix 5) The control device integrated rotating electric machine according to any one of Appendices 1 to 4, further comprising a third adhesive portion between the outer peripheral surfaces of the inflow pipe and the outflow pipe and the inner peripheral surface of the second hole. (Appendix 6) The inner diameters of the inflow pipe and the outflow pipe are formed to be smaller from the outer end portion side toward the inner end portion side in the portion inserted into the second hole. The control device integrated rotating electric machine according to any one of Appendices 1 to 5, wherein the outer diameters of the inflow pipe and the outflow pipe are formed to be the same from the outer end portion side to the inner end portion side in the portion inserted into the second hole. (Appendix 7) The control device integrated rotating electric machine according to any one of Appendices 1 to 6, wherein an insertion portion having an outer peripheral surface inserted into the first hole and in contact with the inner peripheral surface of the first hole is formed on the inner end portion side of the inflow pipe and the outflow pipe. (Appendix 8) The control device integrated rotating electric machine according to any one of Appendices 1 to 7, wherein the outer end portion sides of the inflow pipe and the outflow pipe are formed in a curved pipe shape. (Appendix 9) The control device integrated rotating electric machine according to any one of Appendices 1 to 8, which is installed so that the power conversion device faces the front side of the vehicle. (Appendix 10) The control device integrated rotating electric machine according to any one of Appendices 1 to 9, wherein a heat insulating member having a lower thermal conductivity than the thermal conductivities of the cooler and the bracket is interposed between the cooler of the power conversion device and the bracket of the rotating electric machine.

Explanation of Signs

[0083] 1 Control device integrated rotating electric machine, 10 Pulley, 11 Space, 12 Slip ring, 13 Brush, 14 Brush holder, 15 Air cooling fan, 16 Air cooling fan, 17 Detection sensor, 171 Sensor stator, 172 Sensor rotor, 18 Power conversion element, 181 AC terminal, 182 Ground terminal, 183 Input terminal, 184 Control terminal, 19 Field power conversion element, 2 Rotating shaft, 211 Axis center, 22 End part, 23 End part, 20 Control module, 21 Case, 221 Terminal, 231 Terminal, 24 Terminal, 25 Connecting board, 26 Connection point, 27 Screw, 28 Connection point, 29 Connection point, 3 Rear cover, 30 Flow path member, 301 First surface, 302 Second surface, 303 Flow path groove, 304 Second hole, 305 First hole, 306 Concave part, 307 Filling part, 31 Cover, 311 Opposing surface, 313 Inner end part (outflow pipe), 314 Inner end part (second hole), 315 Inner end part (first hole), 323 Outer end part (outflow pipe), 324 Outer end part (second hole), 325 Outer end part (first hole), 333 Edge (first hole), 32 Seal part, 33 Outflow pipe, 34 Inflow pipe, 331 Flange, 332 Inner diameter, 334 Outer diameter, 351 First adhesion part, 352 Second adhesion part, 353 Third adhesion part, 354 Fourth bonding part, 355 Fifth bonding part, 36 Cooler, 37 Flow path, 38 Running air 4 Rotor, 40 Rotating electric machine, 41 Field core, 42 Field winding, 5 Stator 50 Power conversion device, 51 Stator core, 52 Armature winding, 53 Stator lead wire 6 Bracket, 60 Vehicle, 61 Rear bracket, 62 Front bracket 7 Bearing, 8 Bearing, 9 Bolt, 90 Heat insulation member, 91 Bolt, W1 Diameter W2 Diameter

Claims

1. A control device integrated rotating electrical machine comprising a rotating electrical machine having a rotor and a stator, and a power conversion device arranged in parallel with the rotating electrical machine in the axial direction of the rotating electrical machine and supplying power to the rotating electrical machine, wherein the power conversion device has a power conversion element that converts the current supplied to the rotating electrical machine, and a cooler that cools the power conversion element with a cooling medium, the cooler having a channel member that is combined to form a flow path for the cooling medium, a lid, an inlet pipe for the cooling medium, and an outlet pipe for the cooling medium, the channel member having, a first surface facing the rotating electrical machine side in the axial direction and having a flow path groove extending in the circumferential direction of the rotating electrical machine, a second surface facing the side opposite to the rotating electrical machine in the axial direction and to which the power conversion element is thermally connected, a first hole whose inner end communicates with the flow path groove, and a second hole whose inner end communicates with the first hole and whose outer end opens to the outside of the channel member and has a diameter larger than that of the first hole, the second hole being formed at two positions in the circumferential direction of the flow path groove, a recess formed on the entire circumference along the edge of the flow path groove on the first surface so as not to overlap the second hole in the axial direction, the lid being installed so as to close the flow path groove and the recess, a seal portion for sealing between the first surface and the lid being formed in the recess, the inlet pipe and the outlet pipe being arranged such that their inner end portions are inserted into the second hole and the outer peripheral surfaces of the inlet pipe and the outlet pipe are respectively in contact with the inner peripheral surface of the second hole, and their outer end portions are arranged outside the channel member, a control device integrated rotating electrical machine.

2. The control device integrated rotating electrical machine according to claim 1, further comprising a first adhesive portion between the inner end portions of the inlet pipe and the outlet pipe and the inner peripheral surface of the second hole.

3. The control device integrated rotating electrical machine according to claim 1, wherein the inner end portions of the inlet pipe and the outlet pipe are installed in contact with the edge on the outer end portion side of the first hole.

4. The control device integrated rotating electrical machine according to claim 3, further comprising a second adhesive portion between the inner end portions of the inlet pipe and the outlet pipe and the outer end of the first hole.

5. The control device integrated rotating electrical machine according to any one of claims 1 to 4, further comprising a third adhesive portion between the outer peripheral surfaces of the inlet pipe and the outlet pipe and the inner peripheral surface of the second hole.

6. The inner diameters of the inflow pipe and the outflow pipe are formed to be smaller from the outer end side toward the inner end side at the portion inserted into the second hole. The control device integrated rotating electric machine according to any one of claims 1 to 4, wherein the outer diameters of the inflow pipe and the outflow pipe are formed to be the same from the outer end side to the inner end side at the portion inserted into the second hole.

7. The control device integrated rotating electric machine according to any one of claims 1 to 4, wherein an insertion portion having an outer peripheral surface inserted into the first hole and contacting the inner peripheral surface of the first hole is formed on the inner end side of the inflow pipe and the outflow pipe.

8. The control device integrated rotating electric machine according to any one of claims 1 to 4, wherein the outer end sides of the inflow pipe and the outflow pipe are formed in a curved pipe shape.

9. The control device integrated rotating electric machine according to any one of claims 1 to 4, wherein the power conversion device is installed so as to face the front side of the vehicle.

10. The control device integrated rotating electric machine according to any one of claims 1 to 4, wherein a heat insulating member having a lower thermal conductivity than the thermal conductivities of the cooler and the bracket is interposed between the cooler of the power conversion device and the bracket of the rotating electric machine.

Images