JP5908741B2 - Rotating electric machine - Google Patents

Description

  Embodiments described herein relate generally to a rotating electrical machine.

  In recent years, there has been a demand for downsizing and higher output of rotating electrical machines. Now, when the rotating electrical machine is reduced in size, the surface area of the housing is reduced, so that the heat dissipation of the rotating electrical machine is lowered. Further, when the output of the rotating electrical machine is increased, the voltage value and the current value supplied to the rotating electrical machine increase, so that the amount of heat generated by the rotating electrical machine increases. For this reason, in order to reduce the size of the rotating electrical machine and increase the output, that is, improve the characteristics, it is important to efficiently cool the rotating electrical machine. At this time, in order to reduce the size of the rotating electrical machine, it is also important to reduce the size of the cooling mechanism for cooling the rotating electrical machine and to reduce the installation space.

JP 2005-229671 A

  The problem to be solved by the present invention is to provide a rotating electrical machine that can be efficiently cooled without causing an increase in size of a housing or a cooling mechanism.

  According to the rotating electrical machine of the embodiment, the cooling oil transfer means that flows down from above the stator and the rotor and directly cools the cooling oil that has cooled the stator and the rotor again above the stator and the rotor. The blade member provided in is rotated by using the flow of the cooling water flowing through the cooling water path through which the cooling water transferred by the pump provided outside as a rotational force.

The figure which shows typically the cross section of the rotary electric machine of 1st Embodiment. The figure which shows typically the cross section along the II-II line | wire of FIG. 1 of the rotary electric machine of 1st Embodiment. The figure which shows typically the cross section of the rotary electric machine of 2nd Embodiment. The figure which shows typically the cross section of the rotary electric machine of 2nd Embodiment. The figure which shows typically the cross section of the rotary electric machine of other embodiment.

Hereinafter, a plurality of embodiments of a rotating electrical machine will be described with reference to the drawings. Note that, in a plurality of embodiments described below, substantially the same components are denoted by the same reference numerals, and description thereof is omitted.
(First embodiment)
Hereinafter, the rotating electrical machine according to the first embodiment will be described with reference to FIGS. 1 and 2.
As shown in FIG. 1, the rotating electrical machine 10 according to the present embodiment includes a stator 12, a rotor 13, and a cooling oil transfer unit 14 in a housing 11. FIG. 1 schematically shows a state in which the rotating electrical machine 10 is installed. In the following description, the direction along the gravity in the state in which the rotating electrical machine 10 is installed is assumed to be up and down. In this embodiment, the rotating electric machine 10 is assumed to be a motor for a vehicle that is installed in a vehicle such as a so-called electric vehicle or a hybrid vehicle and is used for driving the vehicle.

  The casing 11 has a generally cylindrical body 15 having an opening on the front side (the right side in FIG. 1) and the rear side (the left side in FIG. 1), and a front part that blocks the opening on the front side of the body part 15. The flange 16 and the rear flange 17 that closes the opening on the rear side of the body portion 15 are provided. Details of the casing 11, the front flange 16, and the rear flange 17 will be described after the description of the stator 12 and the rotor 13.

  The stator 12 has a stator core 18 and a coil 19. The stator core 18 is formed in a cylindrical shape by laminating, for example, core pieces formed by punching magnetic steel plates in an annular shape. The stator core 18 has a coil insertion groove (not shown) extending in the stacking direction, that is, in the axial direction. A plurality of coil insertion grooves are provided over the entire area in the circumferential direction on the inner peripheral side of the stator core 18. For example, a coil 19 composed of three phases of a U phase, a V phase, and a W phase is inserted. When the coil 19 is inserted into the coil insertion groove, a part of the coil 19 is exposed from both axial ends of the stator core 18.

  As is well known, the coil 19 exposed from the stator core 18 is expanded outward in the circumferential direction of the stator core 18 and then impregnated with varnish or the like and fixed. Thereby, the coil end 20 is formed in the whole area of the circumferential direction in the both end sides of the stator core 18. The stator 12 having such a configuration is fixedly attached to the housing 11 by an attachment jig (not shown).

  The rotor 13 is provided on the inner peripheral side of the stator 12 and has a rotor core 21 and a rotating shaft member 22. The rotor core 21 is formed, for example, by stacking core pieces formed by punching magnetic steel plates into a disk shape. The rotor core 21 has a magnet insertion hole (not shown) and a permanent magnet (not shown) inserted into the magnet insertion hole. That is, the rotating electrical machine 10 of the present embodiment is an embedded magnet type electric motor (IPM motor) in which a permanent magnet is embedded in the rotor core 21. The rotary shaft member 22 is press-fitted into a shaft hole provided in the central portion in the radial direction of the rotor core 21 and is fixed to the rotor core 21. The rotary shaft member 22 may be fixed to the rotor core 21 by fitting or insertion instead of press-fitting, or may be formed hollow.

  The rotary shaft member 22 is rotatably supported by bearings 23 as bearing members on both end sides with the rotor core 21 interposed therebetween. The bearing 23 is sealed by a so-called oil seal or the like, and the cooling oil X is in direct contact as will be described later. One end of the rotating shaft member 22, that is, the end on the right side in the drawing, passes through the front flange 16 and protrudes outside the housing 11. A space between the front end of the rotary shaft member 22 and the front flange 16 is airtight and liquid-tight by packing (not shown) or the like. A driving object (not shown) is connected to the protruding end of the rotating shaft member 22 via a speed reduction mechanism or the like.

  Here, the casing 11 will be described in detail. A cooling water path 24 through which the cooling water W flows is formed in the body portion 15 of the housing 11, that is, between the outer peripheral wall portion 15 a and the inner peripheral wall portion 15 b. The cooling water path 24 is also formed by a cooling water pipe 25 provided outside the housing 11. The cooling water W flowing through the cooling water path 24 is transferred by a pump 26 provided outside the rotating electrical machine 10. More specifically, as shown in FIGS. 1 and 2, when the pump 26 is driven, the cooling water W flows in from the inlet 27 provided on the lower side of the trunk portion 15, and the trunk portion 15. It flows upward in the interior and flows out from an outlet 28 provided on the upper side of the trunk portion 15 to a cooling water pipe 25 provided outside the trunk portion 15. The cooling water pipe 25 is provided with a radiator 25a for heat dissipation. The cooling water W flowing through the cooling water path 24 is radiated by the radiator 25 a after absorbing the heat of the casing 11.

  That is, in the present embodiment, the housing 11 has a structure (water cooling jacket) that is directly cooled by the cooling water W. In FIG. 1, the inlet 27 is shown below the trunk 15, but the inlet 27 is installed when the rotating electrical machine 10 is installed, for example, at a position on the side of the trunk 15 as shown in FIG. 2. It may be provided at a position where it does not become an obstacle. The same applies to the outlet 28.

  Further, as shown in FIG. 1, the trunk portion 15 has a plurality of downflow ports 29 that open to the inside of the housing 11 inside the upper side (between the outer peripheral wall portion 15 a and the inner peripheral wall portion 15 b). An oil path 30 is formed. The cooling oil passage 30 is formed so as to extend in the front-rear direction inside the body portion 15 and is formed so as to extend in the circumferential direction inside the body portion 15 as shown in FIG. As shown in FIGS. 1 and 2, the flow-down port 29 is formed above the stator 12 and the rotor 13, more specifically, above the stator 12 and the coil end 20. For this reason, the cooling oil X flowing down from the flow down port 29 directly contacts the coil 19 (coil end 20), the stator 12 and the rotor 13.

  The cooling oil passage 30 is provided on the upper side of the body portion 15 in a state of being close to the cooling water passage 24 with the partition wall 31 interposed therebetween. The partition wall 31 corresponds to the heat exchange member described in the claims. In this embodiment, as the cooling oil X, mineral oil-based ATF (Automatic Transmission Fluid) used for, for example, a transmission of an automatic vehicle is employed.

  Further, as shown in FIG. 1, an oil storage chamber 32 that temporarily stores the cooling oil X is formed in the casing 11. The oil storage chamber 32 has a bottom portion 32 a formed by a part of the inner peripheral wall portion 15 b on the lower side of the body portion 15 being recessed radially outward, and a wall portion 32 b formed by the inner wall of the rear flange 17. ing. The bottom 32a of the oil storage chamber 32 is slightly inclined toward the front (right side in the figure). The amount of cooling oil X in the housing 11 that contacts at least a part of the coil end 20 on the lower side of the stator 12 in a state where a part of the cooling oil X is stored in the oil storage chamber 32, that is, the coil end 20. An amount that can be immersed is supplied into the housing 11.

  The rear flange 17 is formed with an opening 17 a that is partially open to the oil storage chamber 32 at a position corresponding to the oil storage chamber 32. Further, the rear flange 17 is formed therein with a cooling oil passage 30 through which the cooling oil X communicating with the opening 17a flows. In other words, the cooling oil path 30 in the rotating electrical machine 10 passes from the oil storage chamber 32 through the opening 17a to the inside of the rear flange 17 and reaches the downflow port 29 provided in the trunk portion 15. That is, the cooling oil X circulates inside the rotating electrical machine 10. The cooling oil passage 30 also has an opening at a position corresponding to the bearing 23 provided in the rear flange 17. For this reason, the cooling oil X also directly contacts the bearing 23. Although illustration is omitted for simplification of explanation, since a resolver and the like for detecting the rotational position of the rotary shaft member 22 are provided on the rear side of the casing 11, the cooling oil path 30 It is formed with a route to avoid.

  The rear flange 17 is provided with a cooling oil transfer section 14 having an impeller 33 in the cooling oil path 30 inside the opening 17a. The cooling oil transfer unit 14 corresponds to the cooling oil transfer means described in the claims. The impeller 33 corresponds to the blade member described in the claims. The impeller 33 is rotationally driven to transfer the cooling oil X stored in the oil storage chamber 32 toward the downflow port 29 side. The impeller 33 is formed of a so-called impeller or the like. The impeller 33 has a shaft 34 connected to the center of rotation. The shaft 34 passes through the rear flange 17 and is connected to a water turbine 35 provided in the cooling water passage 24.

  The water turbine 35 is rotated by the flow of the cooling water W transferred by the pump 26. At this time, the rotation of the water wheel 35 is transmitted to the impeller 33 through the shaft 34. That is, the impeller 33 of the cooling oil transfer unit 14 is rotationally driven by the water wheel 35 and the shaft 34 that convert the flow of the cooling water W into a rotational force. The shaft 34 and the water wheel 35 correspond to the conversion mechanism section described in the claims. The space between the shaft 34 and the rear flange 17, that is, between the cooling oil passage 30 and the cooling water passage 24 is liquid-tight. Note that the conversion mechanism unit is not limited to the water wheel 35 and may be any configuration that can rotate the impeller 33. In addition, when the flow rate of the cooling water W and the desired flow rate of the cooling oil X are different, a configuration may be adopted in which a reduction mechanism is provided in the conversion mechanism unit.

  The rotary electric machine 10 having such a configuration is not illustrated, but a drive signal is supplied to the coils 19 of each phase from, for example, a drive circuit having an inverter circuit. As a result, a rotational force acts between the stator 12 and the rotor 13, and the rotor 13, that is, the rotary shaft member 22 rotates, and the drive target is driven. This drive circuit corresponds to “a control device related to a rotating electrical machine” described in the claims.

Next, the operation of the rotating electrical machine 10 having the above configuration will be described.
When the rotating electrical machine 10 is cooled using the cooling oil X, a pump 26 for transferring (circulating) the cooling oil X is required. However, in a general vehicle, even if an electric motor is mounted, water cooling such as an inverter of a drive circuit is performed using a so-called LLC (Long Life Coolant) used for a radiator liquid or the like. Supplying ATF to the motor is often not considered. In that case, it is necessary to separately install a pump for circulating the cooling oil X, resulting in an increase in installation space. In addition, when a pump is used to circulate the cooling oil X, the power consumption increases, and therefore there is a situation where it is desired to avoid using the pump in an electric vehicle or a hybrid vehicle.

Therefore, the rotating electrical machine 10 according to the present embodiment can improve the cooling efficiency and thus improve the characteristics of the rotating electrical machine 10 while suppressing the increase in the size of the cooling mechanism in consideration of the installation space as follows. It is said.
In the rotating electrical machine 10, the cooling oil X is stored in the oil storage chamber 32. The cooling oil X is transferred through the cooling oil path 30 by the rotation of the impeller 33. Specifically, the cooling oil X flows from the oil storage chamber 32 to the rear flange 17 side with the rotation of the impeller 33, and moves upward in the cooling oil passage 30 formed inside the rear flange 17. And flow. At this time, a part of the cooling oil X flows toward the bearing 23, and the rest flows toward the cooling oil path 30 provided on the upper side of the trunk portion 15, and then from the downflow port 29 to the casing 11. It flows down into the inside. The cooling oil X directly contacts the coil 19, the stator 12, and the rotor 13, then flows downward due to gravity, and is stored again in the oil storage chamber 32. As a result, the coil 19, the stator 12, the rotor 13, and the bearing 23 are deprived of heat generated by contact with the cooling oil X. That is, the coil 19, the stator 12, the rotor 13, and the bearing 23 are cooled by the cooling oil X.

  At this time, the body portion 15 is cooled by the cooling water W flowing through the cooling water passage 24. As a result, the cooling oil X stored in the oil storage chamber 32 and the lower part in the housing 11 is cooled by the body portion 15 cooled by the cooling water W. On the upper side of the body portion 15, the cooling oil passage 30 and the cooling water passage 24 are close to each other with the partition wall 31 interposed therebetween. Therefore, the cooling oil X flowing down from the downflow port 29 is cooled by the cooling water W on the upper side. That is, the cooling oil X is cooled and its temperature is lowered both when it is stored in the oil storage chamber 32 and when it flows down from the flow down port 29. As a result, the cooling oil X having a lowered temperature comes into contact with the coil 19 and the like, and further cooling is promoted.

  The cooling oil X circulating in the housing 11 in this way has the flow of the cooling water W converted by the water turbine 35 and the shaft 34, more strictly, by the flow of the cooling water W flowing through the cooling water passage 24. It is circulated (transferred) by the impeller 33 that is rotationally driven by the rotational force. That is, the cooling oil X is circulated using a water cooling mechanism for circulating the cooling water W provided in advance. Thereby, it becomes possible to circulate the cooling oil X without requiring the pump 26 for circulating the cooling oil X or the like.

  The rotary electric machine 10 according to the present embodiment described above has the impeller 33 that transfers the cooling oil X by being driven to rotate in the cooling oil path 30 through which the cooling oil X flows. , Provided in a cooling water path 24 through which cooling water W transferred by a pump 26 provided outside the rotating electrical machine 10 flows, and connected to a water turbine 35 and a shaft 34 that convert the flow of the cooling water W into rotational force. And is driven to rotate by the flow of the cooling water W. As a result, it is possible to circulate the cooling oil X without requiring the pump 26 for circulating the cooling oil X and without increasing the size of the cooling mechanism. And the cooling oil X cools them directly by contacting the stator 12 or the rotor 13. Therefore, the rotating electrical machine 10 can be efficiently cooled without causing an increase in the size of the casing 11 or the cooling mechanism.

Further, since the rotating electrical machine 10 can be efficiently cooled, the power (voltage value or current value) supplied to the rotating electrical machine 10 can be increased, and the characteristics of the rotating electrical machine 10 can be improved.
In this case, since the cooling oil X is circulated using the flow of the cooling water W, an increase in power consumption can be suppressed, and the rotating electrical machine 10 suitable for an electric vehicle or a hybrid vehicle can be provided. it can. Moreover, since the piping etc. which circulate the cooling oil X are not required, since weight reduction is also realizable, the mounting to a vehicle can be accelerated | stimulated.

Further, since the cooling water W is for cooling the casing 11 and the drive circuit of the rotating electrical machine 10, it is considered that the cooling water W is provided in the vicinity of the rotating electrical machine 10 in advance. Since the cooling water W is used, there is no need to route the cooling water path 24, and the possibility that the cooling mechanism is enlarged or the piping is complicated can be suppressed.
Further, since the cooling water W is driven by the pump 26, the cooling water W is flowing even in a state where the rotating electrical machine 10 is stopped (a state where electric power is supplied but rotation is not performed). The rotating electrical machine 10 may generate heat when a large current flows even when it is stopped, for example, at the time of starting to start rotational driving. Therefore, by using the cooling water W that is assumed to flow regardless of the driving state of the rotating electrical machine 10 as a driving source, the cooling oil X can circulate in the housing 11 regardless of the driving state of the rotating electrical machine 10. It has become. Thereby, the rotary electric machine 10 can be cooled even at the time of starting.

  In addition, a part of the cooling water path 24 is provided in the upper part and the lower part of the casing 11 (body part 15). Thereby, the cooling oil X stored in the oil storage chamber 32 is cooled in the lower part in the housing 11. In addition, a part of the cooling oil passage 30 is formed in the vicinity of the cooling water passage 24 with the partition wall 31 serving as a heat exchange member interposed therebetween on the upper side of the body portion 15. For this reason, the cooling oil X flowing down from the flow down port 29 is cooled by the cooling water W flowing through the cooling water passage 24 sandwiching the partition wall 31. Thus, the cooling oil X is cooled both in the oil storage chamber 32 at the lower part of the casing 11 and at the upper part of the casing 11 when flowing down from the flow-down port 29. As a result, the cooled cooling oil X comes into contact with the stator 12 and the rotor 13, and cooling can be further promoted.

In addition, since the cooling oil X circulates in the casing 11 by providing the entire cooling oil path 30 in the casing 11, the possibility of the cooling oil X leaking out of the casing 11 can be reduced. . Further, since the entire cooling oil path 30 is arranged in the casing 11, that is, an arrangement in which the outer shape of the rotating electrical machine 10 is not changed, the size of the rotating electrical machine 10 is not increased.
The cooling oil X also directly contacts the bearing 23. For this reason, in addition to the stator 12 and the rotor 13, the bearing 23 in which the frictional heat generated when the rotating shaft member 22 rotates can be directly cooled. That is, the heat generation as the entire rotating electrical machine 10 can be further suppressed.

Since the cooling oil X that can be immersed at least in the coil end 20 on the lower side of the stator 12 is used, the lower portions of the stator 12 and the coil end 20 are always in contact with the cooling oil X. . Therefore, the stator 12 and the coil end 20 can be cooled more effectively.
Since the bottom portion 32a of the oil storage chamber 32 is inclined in the direction opposite to the opening portion 17a, it is possible to reduce the possibility that dust in the oil flows into the cooling oil passage 30 from the opening portion 17a.

(Second Embodiment)
A rotating electrical machine according to the second embodiment will be described with reference to FIG. In 2nd Embodiment, arrangement | positioning of a cooling oil transfer means and a conversion mechanism part differs from 1st Embodiment. Since the main configuration of the rotating electrical machine is substantially the same as that of the first embodiment, the same reference numerals are given and detailed description is omitted.
As shown in FIG. 3, the rotating electrical machine 100 of the second embodiment is provided with a cooling oil transfer unit 14 having an impeller 33 outside the housing 11, a shaft 34 as a conversion mechanism unit, and a water wheel 35. . The cooling oil path 30 is also formed by a cooling oil pipe 40 provided outside the housing 11. In this case, the cooling oil X flows into the casing 11 from the oil inlet 41 and cools the stator 12 and the like, and then from the oil outlet 42 provided at the lower portion of the casing 11 to the outside of the casing 11. To leak. At this time, the cooling oil X is transferred by the cooling oil transfer unit 14 driven by the flow of the cooling water W, as in the first embodiment. The cooling oil pipe 40 is provided close to the cooling water pipe 25 that forms the cooling water path 24. Even with such a configuration, it is possible to obtain an effect that the rotating electrical machine 100 can be efficiently cooled as in the first embodiment.

  Further, in the configuration in which the cooling oil transfer unit 14 and the conversion mechanism unit are provided outside the casing 11 (a position away from the casing 1), the cooling water W is not supplied to the casing 11 (that is, the casing In the case where the cooling water passage 24 is not provided on the body 11 side), a significant layout change or the like of the existing cooling water piping 25 is unnecessary, which is useful.

  Moreover, as shown in FIG. 4, the cooling oil transfer part 14 which has the impeller 33 inside the housing | casing 11 of the rotary electric machine 200, and the shaft 34 and the water wheel 35 as a conversion mechanism part may be provided. Even with such a configuration, the rotating electrical machine 200 can be effectively cooled as in the first embodiment, and the cooling oil transfer unit 14 and the conversion mechanism unit are provided inside the housing 11. The external size of the camera does not change. As a result, the existing rotating electrical machine can be easily replaced with the rotating electrical machine 200 that has been reduced in size and performance, or the layout of the existing installation location does not need to be changed.

(Other embodiments)
Although the impeller 33 is exemplified as the impeller member, a configuration other than the impeller 33 may be used as long as the cooling oil X can be transferred.
Although an example in which the cooling water passage 24 is formed inside the trunk portion 15 is shown, the cooling water passage 24 may be provided outside the trunk portion 15. For example, it is conceivable that a pipe member that forms the cooling water path 24 is wound around the trunk portion 15 to indirectly cool the trunk portion 15, that is, the casing 11.

  In each embodiment, the configuration in which the cooling oil X is cooled (heat exchange) with the cooling water W in the casing 11 is illustrated. However, as illustrated in FIG. 5, for example, heat as a heat exchange member is provided outside the casing 11. It is good also as a structure which provides the exchanger 50 and heat-exchanges between the cooling oil X and the cooling water W in the exterior of the housing | casing 11. FIG. In addition, the cooling water W used for driving the impeller 33 may be used for other than the rotating electrical machine 10, for example, for cooling the engine of the vehicle.

The rotating electrical machines 10, 100, and 200 may be surface magnet type motors (SPM motors) as well as the embedded magnet type motors exemplified in the embodiments. Further, instead of the permanent magnet type, an induction motor may be used, and further, not only the motor but also a generator.
In the first embodiment, the cooling oil passage 30 is formed inside the rear flange 17, but the cooling oil passage 30 may be provided in the body portion 15. Moreover, it is good also as a structure of piping in the space inside the housing | casing 11.

  As described above, according to at least one embodiment, the cooling oil X flowing down from above the stator and the rotor and directly cooling the stator and the rotor is again supplied above the stator and the rotor. The blade member provided in the cooling oil transfer means for transferring to is rotated by using the flow of the cooling water transferred by a pump provided outside as a rotational force. Accordingly, it is possible to circulate the cooling oil without requiring a pump or the like to circulate the cooling oil and without causing an increase in the size of the mechanism unit that transfers the cooling oil. Therefore, the rotating electrical machine can be efficiently cooled without causing an increase in the size of the outer shape or the cooling mechanism. In this case, since the cooling oil is circulated using the flow of the cooling water, a pump for circulating the cooling oil becomes unnecessary, and an increase in electric power can be suppressed. In addition, since the cooling efficiency of the rotating electrical machine is improved, the power (voltage value or current value) supplied to the rotating electrical machine can be increased, and the characteristics of the rotating electrical machine can be improved, that is, the performance can be improved. it can.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  In the drawings, 10, 100, and 200 are rotating electrical machines, 11 is a housing, 12 is a stator, 13 is a rotor, 14 is a cooling oil transfer unit (cooling oil transfer means), 22 is a rotating shaft member, and 23 is a bearing ( Bearing member), 24 is a cooling water path, 26 is a pump, 30 is a cooling oil path, 31 is a partition wall (heat exchange member), 33 is an impeller (blade member), 34 is a shaft (conversion mechanism unit), and 35 is a water wheel. (Conversion mechanism part), 50 indicates a heat exchanger (heat exchange member).

Claims (6)

A housing that houses the stator and the rotor;
In a state where the casing is installed, cooling oil that has flowed down from above the stator and the rotor and directly cooled the stator and the rotor is transferred again above the stator and the rotor. Cooling oil transfer means;
A path through which the cooling oil transferred by the cooling oil transfer means flows, the cooling oil path being completed within the housing; and
A cooling water path that is provided independently of the cooling oil path, and a cooling water path through which cooling water flows .
The cooling oil delivering means is provided in the cooling oil path has a blade member for transporting the cooling fluid by being rotary driven,
The blade member is pre-provided on Kihiya却水path, the rotating electrical machine, characterized in that rotationally driven by a converter mechanism for converting the flow of the cooling water to the rotational force. The cooling water, which cools the control unit associated with the prior Kikatamitai or the rotary electric machine,
The rotating electrical machine according to claim 1, wherein a part of the cooling water path is provided in at least one of an upper part and a lower part of the casing.   The rotating electrical machine according to claim 1, further comprising a heat exchange member that exchanges heat between the cooling oil and the cooling water. The housing is composed of a cylindrical trunk and a flange that closes the opening of the trunk,
The said blade member is provided in the inner side of the said flange connected to the oil storage chamber formed in the lower part in the said housing | casing, or the inner side of the said trunk | drum. The rotating electrical machine according to claim 3. A bearing member that rotatably supports a rotary shaft member provided in the rotor;
5. The rotating electrical machine according to claim 1, wherein the cooling oil directly cools the bearing member in addition to the stator and the rotor. 6. The rotating electrical machine according to claim 1, wherein the conversion mechanism section is provided in the housing.

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