JP2001145209A - Vehicle dynamoelectric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the dimensions of a power train which has a vehicle dynamoelectric machine between an engine and a speed changer. SOLUTION: Rotors 220 and 230 are provided on the outer circumference side and inner circumference side of the stator 210 of a dynamoelectric machine 200 and magnetically coupled with a single stator winding 212 wound on the stator 210. With this constitution, the dimensions in the axial direction of a vehicle dynamoelectric machine in the axial direction on a engine rear side can be reduced, so that the weight of a power train can be reduced and the power train can be mounted on the vehicle easily.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a rotating electric machine for a vehicle for starting an engine, assisting engine torque, and regenerating running energy of the vehicle by interposing the engine between a transmission and a transmission. .

[0002]

2. Description of the Related Art Japanese Patent Laying-Open No. 11-78558 discloses a rotating electric machine for a vehicle having a rotor driven by a crankshaft between an engine and a transmission, and a peripheral surface facing the peripheral surface of the rotor. And a stator fixed to a housing (hereinafter referred to as a rear-position type vehicle rotary electric machine).

[0003]

The above-described conventional rotary electric machine for a rear-mounted vehicle is arranged along a belt at the front of the engine as compared with a conventional rotary electric machine for a front-mounted vehicle mounted at the front of the engine. It is possible to increase the number of auxiliary machines other than the rotary electric machine for a vehicle, and to use the pulley and belt for a small-diameter rotary electric machine for driving a high-power electric rotary machine for a vehicle which has recently become necessary with this belt. Can fundamentally solve the problem of preventing slippage.

However, the conventional rear-position type electric rotating machine for a vehicle is interposed between a crankshaft and a torque transmission mechanism such as a clutch or a torque converter behind the crankshaft, so that the power train length is correspondingly increased. The power train, including the housing surrounding it, becomes large and heavy, and the space required for mounting must be expanded.
This has been a major problem in practical use, and the problem that the body vibration has increased due to the increase in the power train length has also been derived.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is intended for a high-output vehicle using an auxiliary drive system at the front of an engine while suppressing an increase in the physique and weight of a power train and an increase in vehicle body vibration. The purpose is to solve the difficulty of driving a rotating electric machine.

[0006]

According to a first aspect of the present invention, there is provided a rotating electrical machine for a vehicle, wherein the rotating electrical machine for a vehicle is a rear-positioning type rotating electrical machine arranged coaxially with a crankshaft. A configuration in which a rotor having an inner rotor portion and an outer rotor portion individually electromagnetically coupled to both circumferential surfaces is employed, and a stator winding composed of a set of polyphase windings is electromagnetically coupled to both rotor portions. Having.

[0007] In this case, the following operation and effect can be obtained.

First, since it is not necessary to drive the rotating electrical machine for a vehicle at the front of the engine with a belt, the degree of freedom in arranging auxiliary equipment for the vehicle along the belt at the front of the engine is increased, and the rotating electrical machine for a high output vehicle is provided. Therefore, it is not necessary to take measures against belt slip loss and heat generation due to the belt slip.

Further, since the rotor portions are disposed on the inner peripheral side and the outer peripheral side of the stator, respectively, the shaft length of the rotating electric machine for a vehicle can be reduced by almost half, and the distance between the rear end face of the engine and the torque transmission mechanism such as a clutch can be reduced. The length of the rotating electrical machine accommodation space in the axial direction is shortened, the power train length is shortened, and the power train including the housing surrounding it is reduced in size and weight. Can be prevented.

[0010] By radially overlapping the two rotor portions, the radial length of the vehicular rotating electric machine is increased. This is because the flywheel of the rotor of the vehicular rotating electric machine having the two rotor portions. Since the effect is increased, the number of rotary mass members dedicated to flywheels can be reduced. That is,
The rotor of the rotating electric machine for a vehicle of this configuration also serves as a part or the whole of the flywheel, but the inertia mass of the flywheel increases in proportion to the square of the average radius. The flywheel effect is remarkably improved by the rotor structure having the two-rotor portion shape in the radial direction according to the present configuration, for example, as compared with the rotary electric machine for a vehicle having the single rotor portion shape described in the above-mentioned publication.

Further, since both circumferential surfaces of the single stator are electromagnetically coupled surfaces with both rotor portions, the core back portion of the stator can be shared as a magnetic path yoke member of both rotor portions. It is possible to reduce the size and weight of the stator and reduce its space.

Further, since the stator winding is linked to both of the two rotating magnetic fields formed by both rotor portions, the coil end of the stator winding is smaller than providing a stator for each rotor portion. Can be reduced.

Further, since the stator winding is linked to both of the two rotating magnetic fields formed by the two rotor portions, a field magnetic flux having different characteristics is generated in the two rotor portions, so that the two rotor portions are individually connected. It is possible to manufacture a rotating electrical machine for a vehicle having characteristics obtained by mixing the rotating electrical machines of the above.

According to a second aspect of the present invention, in the vehicular rotating electrical machine according to the first aspect, both rotor portions of the rotor are connecting members for connecting a crankshaft and a torque transmission mechanism (such as a clutch). Since it is fixed to the bowl-shaped member, there is no need to separately add a frame that supports the two rotor units, and the power train can be reduced in weight.

According to a third aspect of the present invention, in the electric rotating machine for a vehicle according to the second aspect, the wheel plate portion of the bowl-shaped member further comprises:
Along with supporting the large-diameter cylinder that supports the outer rotor,
Since it also serves as a disk-shaped coupling surface coupled to the torque transmission mechanism, it is possible to realize good coupling with the torque transmission mechanism and support of the outer rotor portion while simplifying the shape and reducing the size and weight.

According to a fourth aspect of the present invention, in the vehicular rotating electric machine according to the first aspect, the stator core of the stator has a common core back at a radially central portion. The weight can be reduced.

According to a fifth aspect of the present invention, in the electric rotating machine for a vehicle according to the fourth aspect, a stator winding comprising a set of polyphase windings is further provided on both circumferential surfaces of the stator in a circumferential cross-sectional shape. And since it is wound in a substantially U-shaped cross-section in the axial direction, the structure and manufacturing of the stator can be simplified. In particular, each phase winding can be inserted into the inner slot and the outer slot after being formed in advance and bent into a U-shape, thereby facilitating the winding operation.

According to a sixth aspect of the present invention, in the electric rotating machine for a vehicle according to the fourth aspect, a stator winding comprising a set of polyphase windings is further provided on both circumferential surfaces of the stator in an axial cross-sectional shape. Is wound in a substantially rectangular shape, so that the structure and manufacturing of the stator can be simplified.

Further, since the inner and outer slots are wound in a toroidal shape (a cross section of a rectangular shape), the ineffective length occupying one turn of the coil is equal to the length passing through both end faces of the electromagnetic core. As a result, the winding length can be significantly reduced, and the amount of winding copper can be reduced and the efficiency can be increased.

According to a seventh aspect of the present invention, in the rotating electric machine for a vehicle according to the fourth aspect, the phase windings have a slot pitch substantially corresponding to a magnetic pole pitch of the stator windings, and are arranged at substantially the same positions in the circumferential direction. Since the windings are wound in the inner peripheral side slot and the outer peripheral side slot so that the current directions are opposite, the structure and manufacturing of the stator can be simplified. In addition, since it is wound with a wave winding, it is easy to perform mechanical winding and automatic winding is easy.

According to an eighth aspect of the present invention, in the vehicular rotating electric machine according to any one of the first to seventh aspects, further, both rotor portions have a magnet type rotor structure having permanent magnets forming field poles. Therefore, there is no need to generate an exciting magnetic field from the stator winding, and the efficiency of the rotating machine can be improved.

According to a ninth aspect of the present invention, in the vehicular rotating electrical machine according to any one of the first to seventh aspects, since both rotor portions have a cage structure of an induction machine, a high-rigidity rotor is used. It can be made economically and the generated voltage while the engine is running can be easily adjusted from the stator windings,
Even if the control fails and becomes uncontrollable, the generated voltage does not become high, and there is no need to take measures against this failure (increase in the withstand voltage of the system), so that a highly reliable rotating electric machine for vehicles can be constructed at low cost. be able to.

According to a tenth aspect of the present invention, in the vehicle rotary electric machine according to any one of the first to seventh aspects,
Since both rotor portions have a reluctance type rotor structure, the rotor can be manufactured economically.

According to the eleventh aspect of the present invention, in the rotary electric machine for a vehicle according to the first aspect, the inner rotor portion of the stator adopts a magnet type rotor structure, and the outer rotor portion adopts a reluctance type rotor structure. The electromagnetic coupling surface area and peripheral speed are small, the output of the inner rotor is difficult to increase, and the disadvantage of the low output density reluctance rotor structure is eliminated by the large diameter of the outer rotor. Thus, it is possible to realize a rotating electrical machine for a vehicle having a good balance between performance and cost.

According to the configuration of claim 12, according to claim 11,
Further, in the rotating electric machine for a vehicle according to the present invention, the center position in the circumferential direction of the magnetic salient pole portion of the reluctance type rotor structure is set to the magnet type rotor.
Since it is set at a position advanced by 45 to 90 electrical degrees in the rotation direction with respect to the center position of the field pole of the rotor structure, the combined torque and the combined output of both rotor portions can be increased.

According to a thirteenth aspect of the present invention, in the rotating electric machine for a vehicle according to the fourth aspect, the stator is further fixed to the housing by a rod-like support member pressed into the core back in a substantially axial direction. The member can fulfill the function of fastening the stator core made of the laminated electromagnetic core in the laminating direction and the function of fixing the stator to the housing,
Also, the area of both circumferential surfaces for electromagnetic coupling of the stator core is not reduced.

According to a fourteenth aspect of the present invention, in the vehicular rotating electrical machine according to the first aspect, one of the two rotor portions has a magnet type rotor structure, and the other has a field magnetic field of a field coil. Since the field coil type rotor structure is used to magnetize the magnetic poles, power generation characteristics and electric characteristics of the vehicular rotating electrical machine can be realized by field current control by controlling the current supplied to the field coil.

[0028] According to the configuration of claim 15, according to claim 14,
In the above-described electric rotating machine for a vehicle, one of the two rotor portions has a magnet type rotor structure, and the other has a rotor portion having a field pole of an inductor structure and a rotor portion wound around a stationary yoke. Since it has a field coil that magnetizes the field poles alternately in the circumferential direction, there is no need to equip the rotor with a field coil, improving centrifugal force resistance performance and simplifying the circuit for energizing the field coil. be able to.

According to the sixteenth aspect, according to the fourteenth aspect,
Furthermore, in the rotating electric machine for vehicles described above, since the current control of the stator winding is performed by reversing the polarity of the current flowing through the field coil, one of the rotor portions of the magnet type rotor structure is connected to the stator winding at high rotation. Even if a high voltage is generated, the other rotor section having the field coil type rotor structure generates an opposite generated voltage in the stator winding, and the generated voltage of the stator winding increases more than necessary. Can be prevented.

According to a seventeenth aspect of the present invention, in the vehicular rotating electrical machine according to the fourth aspect, an outer peripheral slot and an inner peripheral slot are provided at the same position in the circumferential direction with the core back interposed therebetween, and the same number is provided. The field poles of the inner rotor portion and the outer rotor portion are magnetized in opposite polarities on the side facing the stator core at the same position in the circumferential direction.

In this way, most of the field flux flows mainly through the large magnetic path reciprocating through the stator core through both rotors, so that the field flux flowing through the core back is reduced, and the iron loss in this portion is reduced. And magnetic saturation can be suppressed.

According to the eighteenth aspect, in the vehicular rotating electrical machine according to the fourth aspect, the outer peripheral side slot and the inner peripheral side slot are further shifted by a half slot pitch in the circumferential direction with the core back interposed therebetween. Since the same number is provided, the average radial width of the core back is increased as compared with the case where the same number is provided in the circumferential direction with the core back interposed therebetween, so that iron loss and magnetic saturation of this part can be suppressed, or The thickness and thickness of the stator core can be reduced.

[0033]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a rotating electric machine for a vehicle according to the present invention will be described below with reference to the drawings.

[0034]

Embodiment 1 A first embodiment of a vehicular rotating electrical machine according to the present invention will be described with reference to FIGS. 1 is a block diagram of a power train, FIG. 2 is an axial sectional view of a rotating electric machine for a vehicle,
FIG. 3 shows a half section taken along line AA of FIG. (Overall structure) 100 is an engine, 101 is a crankshaft, 110 is an engine controller for controlling the engine 100, and 200 is a rotating electric machine.

Reference numeral 211 denotes an electromagnetic iron core of the stator 210 of the vehicular rotating electric machine 200, on which a three-phase stator winding 212 is wound. The core back 215 of the electromagnetic core 211 is
The mounting member 217 is fixed to the housing 201 via a bolt 216 press-fitted into the core back 215, and the mounting member 217 is fixed to the housing 201.

The inner and outer peripheral surfaces of the stator 210 forming the electromagnetic coupling surface are provided with slots 213 and 213 ′ and teeth 214 and 2.
A first magnetic pole member (inner rotor portion) 220 and a second magnetic pole member (outer rotor portion) 230 are separately arranged on the outer peripheral surface of the stator 210 with a gap therebetween. I have. Both magnetic pole members 220 and 230 are integrated by a bowl-shaped member 240 and fixed to the crankshaft 101 to form a rotor (rotor) 250.

Reference numeral 260 denotes a wheel plate portion 243 of the bowl-shaped member 240.
A clutch fixed to the rear end face of the transmission 300,
It is connected to wheels 600 via a propeller shaft 400 and a differential gear 500.

A converter 700 performs bidirectional AC / DC conversion between the stator winding 212 and the battery 900, and a controller 800 controls the converter 700. (Both magnetic pole members 220, 230) The magnetic pole member 220 faces the inner peripheral surface of the stator 210 with an air gap therebetween, and
The electromagnetic core 221 has a laminated structure that is fitted and fixed to the small-diameter cylindrical portion 241, and a magnet 222 inserted into a hole 223 that extends through the electromagnetic iron core 221 in the axial direction.
An M (interior permanent magnet) rotor structure is constructed.

The magnetic pole member 230 is provided between the stator 2 and the air gap.
Large-diameter cylindrical portion 24 of bowl-shaped member 240 facing the outer peripheral surface of
An electromagnetic core 231 having a laminated structure fitted and fixed to the electromagnetic iron core 2 and a magnet 232 inserted into a hole 233 penetrating the electromagnetic iron core 221 in the axial direction are provided.
It has a permanent magnet (rotor) structure.

The bowl-shaped member 240 has two cylindrical portions 241 at both ends.
A wheel plate 243 connected to the wheel 242 is provided, and a part of the clutch 260 is fixed to a rear end surface of the wheel plate 243.

The magnets 222, 2 of the magnetic pole members 220, 230
32 are arranged at the same circumferential position with the stator 210 interposed therebetween as shown in FIG.
Reference numeral 32 indicates that the opposing surfaces have the same polarity. (Stator) The configuration of the stator 210 will be described in more detail with reference to FIG. FIG. 4 shows the stator and the rotor shown in FIG. 3 developed in the circumferential direction, and shows only the U-phase winding.

In FIG. 4, the winding start U1 of the U-phase winding is
The slot 213 ′ passes through the slot 213 ′ in a direction perpendicular to the plane of the paper, and goes radially outward along the side surface of the core back 215 into the slot 213 on the back side of the paper, that is, on the side opposite to the electromagnetic core 211, and passes through the electromagnetic core 211 in the stacking direction. On the paper surface side, it then passes through slot 213, which is circumferentially spaced apart by three slot pitches, and exits on the back side of the paper surface, that is, on the opposite side of the electromagnetic core, and goes radially inward along the side surface of core back 215 into slot 213 '. Then, it comes out on this side of the paper surface, then returns three slots pitch in the circumferential direction, and is wound several times in a winding manner that passes through the first slot 213 ′ again to the back side of the paper surface to form a phase winding of one magnetic pole,
The same winding method is repeated several times through the sixth slot 213 ', which is the slot at the next same-polarity slot position, to form a phase winding for the next magnetic pole. A minute phase winding is formed.

That is, the phase winding for one magnetic pole is wound in this manner, and the slots 213 and 213 'at the same position in the radial direction are wound.
, The cross section cut in the circumferential direction by the slot 213 becomes a U shape, and the cross section cut in the circumferential direction by the slot 213 ′ becomes a U shape, and becomes a saddle shape as a whole. .

Similarly to the above, the V-phase and W-phase windings are also wound around the electromagnetic core 211, and the three-phase winding 212
Is configured.

In the above description, the winding method when the stator winding 212 is directly wound around the electromagnetic core 211 has been described. However, as shown in FIG. 5, a coil is wound around another winding frame, and only the coil is wound. May be bent along the line XX and the line YY and shaped as shown in FIG. 6, and then wound around the electromagnetic core 211.

In FIG. 4, the teeth 214, 214 '
The magnetic poles (field poles) 232 and 232 ′ arranged on the side represent magnetic poles (field poles) arranged by the magnetic pole member 230, and 222 and 222 ′ represent magnetic poles arranged by the magnetic pole member 220. N and N 'are N poles, S and S' are S
Represents a pole. The dashed-dotted line with an arrow indicates how the magnetic flux generated by these magnetic poles flows in the electromagnetic core 211 and interlinks with the winding 212. That is, the rotor 250
The induced current generated in the stator winding 212 due to the rotation of the battery 900 charges the battery 900 via the converter 700.

In response to a command from the controller 800, the stator 100 is energized to drive the rotor 250, thereby starting the engine 100 or assisting torque. In addition, at the time of vehicle deceleration, by controlling the frequency and phase of the rotating magnetic field of the stator 210 with respect to the rotation speed of the engine 100, that is, the rotation speed of the rotor 250, the kinetic energy of the vehicle is regenerated to the stator 210 as electric power. be able to. 270 is the position of the rotor 250
This is a rotation sensor for detecting the number of rotations. (Modification) A modification of the rotating electric machine will be described below. (Modification 1) A modification will be described with reference to FIG.

The variant shown in FIG. 7 is another winding method of the stator winding 212 of the stator 210, and FIG. 7 is wound around an electromagnetic core 211 of three-phase winding similarly to FIG. One phase (U phase) of the three-phase stator winding 212 is illustrated.

In FIG. 7, at the beginning of the winding of the U-phase winding, the slot 213 'passes through the electromagnetic core 211 in the longitudinal direction perpendicular to the paper plane, that is, passes through the electromagnetic iron core 211 in the stacking direction, and exits from the back side.
, Enter the slot 213, pass the electromagnetic core 215 again in the laminating direction, return to the paper surface side, and repeat the same winding method several times through the slot 213.
The winding exiting the slot 213 passes through the slot 213 which is spaced apart in the circumferential direction by three slots, passes through the electromagnetic core 211 in the stacking direction, and exits to the back side of the paper, and the core back 2 of the electromagnetic core
15, the slot goes into the slot 213 ', passes through the electromagnetic core in the laminating direction, exits on this side of the page, and again enters the slot 213 several times, and then the slot separated in the slot pitch circumferential direction again 213 'and the first winding is repeated to form a phase winding for one phase (U phase).

Similarly, V-phase and W-phase windings are formed.
Thus, the stator winding 21 composed of the three-phase windings
2 is completed. In this winding method, when viewed in a cross section passing through the slots 213 and 213 ′ at the same position in the circumferential direction, the winding has a “U” shape. According to the present winding method, the length per turn of the coil wound on the electromagnetic core 211 can be shortened, and the coil end portion that generates leakage magnetic flux can be shortened. Improvement can be achieved.

Of course, in the case of the magnetic pole arrangement shown in FIG. 7, the flow of the magnetic flux in the electromagnetic iron core 211 is the same as that of FIG. 4, so that the operation is the same as that of the embodiment shown in FIG. (Modification 2) Another modification will be described with reference to FIG.

FIG. 8 shows one phase (U phase) of the induction winding 212 similarly to FIG. In FIG. 8, the winding start end of the U-phase passes through the outer peripheral slot 213 in the direction perpendicular to the paper plane, that is, the electromagnetic iron core 211 is stacked in the laminating direction. Slot 213 on the paper side
Then, the paper exits to the back side of the drawing through the slot 213 which is spaced apart in the circumferential direction of the three-slot pitch. Such winding is repeated several times of the number of magnetic poles × the number of turns to form a phase winding on the outer peripheral side. Next, the same winding method is performed on the inner peripheral side slot 212 ′ of the electromagnetic core 211 to form an inner peripheral side phase winding. The winding start end of the inner peripheral phase winding starts from the slot 213 'facing the winding start end slot 213 several times on the outer peripheral side. In this way, the outer phase winding (wave winding) and the inner phase winding (wave winding) of the U phase are formed. Next, the outer peripheral side phase winding and the inner peripheral side phase winding are connected so that the current directions in the slots at the same position in the circumferential direction are opposite to each other. The formation is completed. The same winding operation is performed for V-phase and W-phase windings.

In this embodiment, each phase winding is wound in a wave winding every turn. However, as shown in FIG. 10, one coil wound several times with a large arc is used at a magnetic pole pitch as shown in FIG. After being formed into irregularities, it may be fitted to the electromagnetic core 211.
Since currents in opposite directions flow through a pair of coil conductors of the same phase winding accommodated in the inner peripheral slot and the outer peripheral slot that are radially rearward by the present winding method, FIGS.
The same operation as the winding shown in FIG. (Other Modifications) In addition to the above-described full-section winding,
It may be a short section winding, and the number of grooves for each pole and each phase may be plural.

When the magnetic pole members 220 and 230 of the rotor are arranged on the inner and outer circumferences of the stator, the SPM (Surface)
Parent magnet, that is, a surface magnet structure.

[0055]

Embodiment 2 FIGS. 11 and 1 show a rotary electric machine for a vehicle according to a second embodiment.
This will be described with reference to FIG. FIG. 11 is a radial half sectional view of the rotating electric machine for a vehicle, and FIG. 12 is a half sectional view taken along the line AA of FIG. (Main part configuration) Slots 21 are provided on the inner and outer peripheral surfaces of the stator 210.
3 ', 213 and teeth 214', 214 are formed.

A plurality of slots 213 ′ and 213 are provided at a predetermined electrical angle pitch in the circumferential direction.
4 'and 214 have a common core back 215 at the same position in the circumferential direction. The phase windings 212 and 212 'are concentratedly wound around the teeth 214' and 214, respectively.
The three-phase windings are arranged at electrical angles separated by 0 ° to form a stator winding 212. On the inner and outer peripheral surfaces of the electromagnetic core 211, magnets 222 and 232 as magnetic pole members are arranged at equal intervals in the circumferential direction at a predetermined pitch. Magnet 222, 2
Numerals 32 are arranged alternately in the circumferential direction and at the same circumferential position and the same pitch across the stator 210 so that surfaces facing each other at the same position in the circumferential direction have the same polarity.
The magnets 222 and 232 are fixed to the cylindrical portions 2411 and 242 of the yoke member 240 which are bowl-shaped and form a magnetic path between the magnetic poles. The cylindrical portion 2411 is fixed to the wheel plate portion of the bowl-shaped member 240, and the cylindrical portion 242 is the large-diameter cylindrical portion described in the first embodiment. (Relationship Between Stator Winding and Magnetic Pole) The relationship between the stator winding 212 and the magnetic pole will be described with reference to FIG.

FIG. 13 is a circumferential development of the stator and the rotor in this embodiment, showing a U-phase winding. The magnetic poles 222 and 232 are arranged so as to face the teeth 214 and 214 ′ at the same position in the circumferential direction and have the same polarity on the facing side and alternately have different polarities in the circumferential direction. The U-phase winding wound around the teeth 214 'is wound around each tooth 214' in the same direction and is repeated half of the number of magnetic poles to form one side of the U-phase winding. The U-phase winding wound around the teeth 214 is wound in the opposite direction to the teeth 214 'as shown in FIG. Ends of the windings wound around the teeth 214 and 214 'are connected to form a U-phase winding. By performing such concentrated winding, the coils wound around the teeth 214 and 214 'are activated in the same direction, resulting in a sum voltage. Similarly, the teeth 214, 214 'separated by 120 electrical degrees on both sides of the teeth 214, 214'.
The stator winding 212 is formed by separately winding V-phase and W-phase windings.

When the rotor 250 is driven from the crankshaft 101 by the engine 100, the voltage induced on the conductor on the inner diameter side and the voltage induced on the conductor on the outer diameter side become the sum of the windings of the stator. Large output can be obtained.

In this embodiment, since the phase winding is concentratedly wound around each tooth, the coil end can be reduced, and the shaft method of the rotating electric machine for a vehicle can be reduced.

[0060]

Embodiment 3 A vehicle rotary electric machine according to Embodiment 3 will be described with reference to FIG. FIG. 14 shows a half cross-sectional view in the radial direction of the rotating electric machine for a vehicle.

In this embodiment, the inner rotor section 220 and the outer rotor section 230 are rotors having a synchronous reluctance structure. Both 230 and 220 are arc-shaped slits 233 and 223 in the electromagnetic iron cores 231 and 221.
(Black coloring) and a plurality of arc-shaped magnetic paths 234 and 224 are formed concentrically, and magnetic irregularities, that is, magnetic salient pole portions are formed on the peripheral surfaces (electromagnetic coupling surfaces) of the electromagnetic iron cores 231 and 221 facing the stator 210. It is formed at a predetermined pitch in the circumferential direction.
Thus, the rotor 250 can be driven in synchronization with the rotating magnetic field generated by the stator 210, and the engine 1
00 and the stator winding 21 with the rotor 250
2 can generate power.

If this rotor structure is adopted, the inner rotor portion and the outer rotor portion are made of only the electromagnetic steel plate, so that the centrifugal force resistance performance is improved in terms of securing rigidity, and the two rotor portions 22 are formed.
Since the rotors 0 and 230 are arranged in the radial direction and the stator 210 is unified, the disadvantage of this rotor structure, that is, the disadvantage of low power density, can be improved.

[0063]

Embodiment 4 A vehicular rotating electrical machine according to Embodiment 4 will be described with reference to FIG. FIG. 15 is a radial half-sectional view of the rotating electric machine for a vehicle.

In this embodiment, the inner rotor portion in FIG. 14 has a magnet rotor structure. With this configuration, the output density between the inner peripheral surface of the stator core and the inner rotor portion can be improved.

[0065]

Fifth Embodiment A rotary electric machine for a vehicle according to a fifth embodiment will be described with reference to FIG. FIG. 16 shows a half sectional view in the radial direction of the rotating electric machine for a vehicle.

In this embodiment, in FIG. 15, the center of the magnet 222, which is a magnetic salient pole of the inner rotor part 220, is rotated in the rotational direction with respect to the circumferential center of the magnetic salient pole of the outer rotor part 230. The angle is set at a position delayed by 45 ° to 90 °. In this way, when the torque is generated by controlling the phase angle by one stator winding 210, the sum of the generated torques of the two rotor units 220 and 230 can be increased, and the output can be increased. it can. FIG. 17 shows FIG.
5 shows the torque-phase angle relationship, and FIG. 18 shows the torque-phase angle relationship in FIG.

[0067]

[Embodiment 6] A case in which the vehicle rotary electric machine of Embodiment 6 has an induction motor configuration will be described with reference to Figs. FIG.
Shows a radial half-sectional view of the rotating electric machine for a vehicle.

A common stator coil 212 is wound on the inner and outer peripheral surfaces of the stator 210, and the inner rotor portion 220 and the outer rotor portion 230 of the cage rotor structure of the induction machine are connected to the inside and outside of the stator 210. It faces the peripheral surface via a gap. Both magnetic pole members (both rotor portions) 220 and 230 are formed in a substantially similar shape with substantially the same number of conductors because they are electromagnetically induced by one stator winding.

FIG. 20 shows a winding diagram of the stator winding 212. In this example, the stator winding 212 is a three-phase winding of a four-pole, 36-slot, 78% short-node lap winding, and shows one phase of the U phase, but the V phase and the W phase each have a phase difference of 2π / 3. And a three-phase winding is formed in a similar winding manner at the position of the slot giving The stator winding 212 may be formed in a U-shape as shown in FIG. 6 and fitted to the inner and outer two winding surfaces of the armature iron wire.

In this manner, the rotor portions 220 and 230 disposed on the inner and outer peripheral surfaces can be driven by one stator winding 212 to drive the engine and assist the torque, and can be used for a rotating electric machine for a vehicle. The shaft length can be shortened.

[0071]

Seventh Embodiment FIGS. 21 and 2 show a vehicular rotating electric machine according to a seventh embodiment.
3 will be described. (Overall Structure) FIG. 21 is an axial sectional view of a vehicular rotating electrical machine 200 mounted between a vehicle engine 100 and a transmission (not shown), and FIG. 22 is a half sectional view taken along line AA in FIG. FIG. 23 is a partial development view of a field pole facing the electromagnetic coupling surface on the inner peripheral side of the stator 210 via a gap in the circumferential direction.

Reference numeral 100 denotes an engine, 101 denotes a crankshaft, and 102 denotes an engine housing. Reference numeral 200 denotes a rotating electric machine for a vehicle, which includes a stator 210, a rotor 250,
It has a field coil 270. The rear end face of the rotor 250 is connected via a clutch 260 to a transmission (not shown) so that torque can be transmitted.

The stator 210 has a cylindrical electromagnetic iron core 211 made of laminated electromagnetic steel sheets, and a stator winding 212 is wound near an outer peripheral surface of the electromagnetic iron core 211 forming an electromagnetic coupling surface. .

Slots 2111 and teeth 2112 formed facing the inner peripheral side electromagnetic coupling surface of electromagnetic core 211
The slot 2111 ′ and the teeth 2112 ′ formed facing the outer electromagnetic coupling surface of the core back 2
13, the number of inner slots 2111 and the number of outer slots 2111 'are formed at the same number and at the same position in the circumferential direction.

Reference numeral 214 denotes a core back 2 of the electromagnetic core 211.
13 is a bolt that penetrates through the electromagnetic core 211 in the axial direction.
And the stator 210 is fixed to the engine housing 102 via the fixing member 215.

An induction type field pole structure (inner rotor portion in the present invention) 220 is formed on the inner peripheral side electromagnetic coupling surface through a gap.
Is facing. This field pole structure 220 is
1, a field coil 270 and a magnetic path member 271 to form a so-called Randell-type pole structure. Inductor 221
As shown in FIG. 23, as shown in FIG.
It has a pole portion 223 and a non-magnetic ring-shaped connecting member 2213.

The N pole portion 222 is
And a plurality of claw-shaped magnetic pole portions 2212 protruding from the outer peripheral end of the ring-shaped support portion 2214 to the front side at a predetermined pitch in the circumferential direction. The south pole 223 includes a cylindrical portion 2230 and a cylindrical portion 22.
A plurality of claw-shaped magnetic pole portions 2211 protruding rearward at a predetermined pitch in the circumferential direction from the rear end of the tab 30. Claw-shaped magnetic pole portion 2211,
Reference numerals 2212 are alternately arranged in the circumferential direction at predetermined intervals.

Each of the claw-shaped magnetic pole portions 2211 and 2212 has an annular step or recess facing the inner peripheral side at a substantially central portion in the axial direction, and the connecting member 2213 is fitted into the step or recess. It is joined by brazing or welding and integrated. The ring-shaped support portion 2214 includes a bowl-shaped member 2 described later.
Forty wheel plates 243 are fixed.

The field coil 270 has a cylindrical magnetic path member 27 facing the inner peripheral surface of the inductor 221 with a small gap therebetween.
1 is accommodated in an annular groove provided on the outer peripheral surface. The magnetic path member 271 is a so-called yoke.
Is fixed to a fixing member 215 for fixing the stator 210.

A magnet-type field pole structure (outer rotor portion in the present invention) 230 is provided on the outer peripheral side electromagnetic coupling surface through a gap.
Is facing. The field pole structure 230 is formed by inserting a plurality of permanent magnets (also simply referred to as magnets) in a cylindrical electromagnetic iron core 231 in the circumferential direction at a predetermined pitch in the circumferential direction and alternately in the circumferential direction, so-called IPM (Interior Palm).
ent Magnet) rotor structure. The electromagnetic core 231 is fitted and fixed to an outer peripheral side cylindrical portion 242 of a bowl-shaped member 240 described later. And the inner cylindrical portion 24
1 is fixed to the crankshaft 101 of the engine.

The bowl-shaped member 240 has a front end fastened to the rear end of the crankshaft 101 and extends rearward, and extends radially outward from the rear end of the inner circumference side cylinder 241. And a wheel plate portion 243 connected to the rear end of the outer cylindrical portion 242.
And A portion of the clutch 200 is fixed to the rear end surface of the wheel plate portion 243 of the bowl-shaped member 240, and the wheel plate-like support portion 2214 is fixed to the front end surface thereof as described above. (Relationship Between Field Coil 270 and Field Pole) Stator Winding 21
Only two U-phase windings are shown in FIG. At the beginning of the winding of the U-phase winding, the core back 213 passes through the slot 2111 ′ on the inner peripheral side in a direction perpendicular to the paper surface, that is, in the laminating direction of the electromagnetic core 211, goes out to the back side, and rises the side surface of the core back 213 radially outward. , The slot 2111 on the outer peripheral side, the slot 2111 is again returned to the paper side through the stacking direction of the electromagnetic core 211, and the same winding is repeated through the slot 2111 ′ a predetermined number of times, and then the slot 2111 is exited. The winding passes through the slots 2111 spaced apart by 3 slot pitch in the laminating direction of the electromagnetic core 211, exits on the back side of the drawing, goes down the core back 213 of the electromagnetic core 211, enters the slot 2111 ′, and stacks the electromagnetic core 211. The slot 2111 ′ which is spaced apart in the circumferential direction by three slot pitches again.
And the first winding is repeated to form a phase winding of one phase (U phase). Similarly, V-phase and W-phase windings are formed. In this way, a single stator winding composed of three-phase windings is wound around the inner and outer electromagnetic coupling surfaces.

Next, field pole structures 220 and 230 are disposed facing a pair of inner and outer electromagnetic coupling surfaces of the stator 210 on which the stator winding 212 is wound, with a gap therebetween. As shown in FIG. 24, the magnet 232 and the inductor 221 forming each field pole of the field pole structures 220 and 230 are arranged at circumferential positions where the same polarity is opposed to each other with the stator interposed therebetween.
N and N 'indicate N poles and S' indicates S poles. This allows
The field flux generated by the exciting current of the field coil 270 is
21 field pole 2211 to S ', field pole 2212 to N'
Excitation. In FIG. 24, the dashed line indicates this field magnetic flux.

That is, in this embodiment, the field magnetic flux generated by the field pole structure 230 formed by the outer magnet and the field magnetic flux generated by the field pole structure 220 formed by the inner circumferential inductor are linked to the same stator coil 212. . (Operation) Next, the operation of this embodiment will be described with reference to the circuit diagram shown in FIG.

Reference numeral 200 is a circuit diagram of the rotary electric machine shown in FIG. 21, where 230 is a field pole formed by a magnet, 230 is a field pole formed by an inductor, and 270 is a field coil. Reference numeral 300 denotes a well-known semiconductor bidirectional converter provided between the stator winding 212 and the battery 501.
Is generated by converting the AC power generated by the
1 or convert the DC power of the battery 501 into AC power and supply it to the stator winding.

Reference numeral 400 denotes the field coil 270 and the battery 50
2 is a well-known semiconductor type H-bridge provided between the H-type bridge 2 and a switching element constituting the bridge, and supplies a necessary amount of excitation current to the field coil 270 by PWM control. In addition, the semiconductor type H-bridge 400 can reverse the direction of conduction as needed, and can reverse the direction of the field pole 230 by the inductor.

This rotating electric machine can be excited by both the field pole structures 230 and 220 at the time of large output.
Although the magnetic field of the field pole structure 230 cannot be changed, the magnetic field and polarity of the field pole structure 220 are changed by changing the amount and polarity of the exciting current flowing through the field coil 270.
Power generation output or electric torque can be controlled.

In particular, when the generated current may be small despite the high engine speed, the field coil 270 may be used.
In the opposite direction, the generated voltage of the entire stator winding 212 can be reduced, and the generated current can be adjusted to a desired value. That is, the magnetic field of the field pole structure 220 can be controlled by controlling the current flowing through the field coil 270, and the power generation output of the rotating electric machine can be controlled. Further, since the inner-side field pole structure 220 having a smaller centrifugal force is not the outer-side field pole structure 230 having a relatively large centrifugal force, the field coil 270 and the iron core around which the field coil 270 is wound are formed. 271 can be easily accommodated, which is more effective for downsizing.

The field current control is performed by the controller 800, which is a control unit according to the present invention. The controller 800 may adjust the field current according to the difference between the generated voltage of the stator winding 212 and a predetermined target voltage. Further, the control of the generated current can also be performed by adjusting the current phase angle of the stator winding 212, so that both generated current controls can be combined as needed. For example, the control for generating the vibration damping torque in the opposite phase to the engine torque can be performed by the current phase angle control, and the control for adjusting the magnitude of the generated voltage according to the battery voltage can be performed by the field current control.

The control of the generated voltage itself by the field current control of the rotating electric machine for a vehicle is already well known in the art of a vehicle alternator (so-called alternator), and thus the detailed description thereof is omitted.

(Other Modifications 1) In each of the above-described embodiments, the inner peripheral slot and the outer peripheral slot are provided at the same position in the circumferential direction. May be displaced. Such a slot shift with a half-slot pitch increases the average radial width of the core back, which is effective in reducing iron loss and increasing power generation output or electric torque. At this time, when the armature coil extends along the end face of the electromagnetic core 211 of the stator 210, the armature coil is inclined at a required distance in the circumferential direction.

Further, for example, when the inner circumferential slot is shifted by a half slot pitch in the circumferential direction, the stator winding on the inner circumferential side is also shifted by a half slot pitch, and accordingly, the field pole 220 of the inner rotor is also shifted by a half slot pitch. Pitch shifted.

FIG. 26 shows an example.

(Other Modification 2) In each of the embodiments described above except for FIG. 26, the field poles of the inner rotor section 220 and the outer rotor section 230 are positioned such that the surface facing the stator 210 is at the same circumferential position. Magnetized to have the same polarity at
It may be magnetized to have the opposite polarity.

When the magnets are magnetized to have the opposite polarities as described above, both rotor portions 220 and 230 and the intermediate stator 210 are formed.
A single common closed magnetic path is formed around the core, and the core back has a structure in which the field magnetic flux flows by the difference between the magnetic fields of the field poles of both rotor parts, so the radial thickness of the core back is reduced,
Iron loss can be reduced.

FIG. 27 shows an example.

The inner and outer stator coils are wound so that the direction of the induced voltage is generated in the same direction, and the winding end and the winding start of both stator coils are connected in series to form one polyphase winding. Preferably, it is a line.

(Other Modifications 3) In each of the above embodiments, the field poles of the inner rotor section 220 and the outer rotor section 23
The zero field pole is magnetized so that the surface facing the stator 210 has the same polarity, but may be magnetized so as to have the opposite polarity.

As described above, when the magnets are magnetized to have the opposite polarities, both rotor portions 220 and 230 and the intermediate stator 210 are formed.
A single common closed magnetic path is formed around the core, and the core back has a structure in which the field magnetic flux flows by the difference between the magnetic fields of the field poles of both rotor parts, so the radial thickness of the core back is reduced,
Iron loss can be reduced.

The inner and outer stator coils are wound so that the direction of the induced voltage is generated in the same direction, and the winding end and the winding start of both stator coils are connected in series to form one polyphase winding. Preferably, it is a line.

(Other Modification 2) In each of the above-described embodiments, the field pole of the inner rotor portion 220 and the outer rotor portion 23
The zero field pole is magnetized so that the surface facing the stator 210 has the same polarity, but may be magnetized so as to have the opposite polarity.

As described above, when the magnets are magnetized to have the opposite polarities, both rotor portions 220 and 230 and the intermediate stator 210 are formed.
A single common closed magnetic path is formed around the core, and the core back has a structure in which the field magnetic flux flows by the difference between the magnetic fields of the field poles of both rotor parts, so the radial thickness of the core back is reduced,
Iron loss can be reduced.

The inner and outer stator coils are wound so that the direction of the induced voltage is generated in the same direction, and the winding end and the winding start of both stator coils are connected in series to form one polyphase winding. Preferably, it is a line.

[Brief description of the drawings]

FIG. 1 is a block diagram of a vehicular drive device using a vehicular rotating electric machine according to a first embodiment.

FIG. 2 is a radial half-sectional view of the vehicular rotating electrical machine shown in FIG.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a stator winding diagram (for a U phase) in FIG. 1;

FIG. 5 is a stator winding diagram showing an example of a winding of the stator winding shown in FIG. 1;

FIG. 6 is a stator winding diagram illustrating an example of a winding of the stator winding of FIG. 1;

FIG. 7 is a stator winding diagram showing an example of a winding of the stator winding of FIG. 1;

FIG. 8 is a stator winding diagram showing an example of a winding of the stator winding of FIG. 1;

FIG. 9 is an explanatory view showing a winding forming method in FIG. 1;

FIG. 10 is an explanatory diagram showing a winding forming method in FIG. 1;

FIG. 11 is a half sectional view in the radial direction showing a rotating electric machine for a vehicle according to a second embodiment.

FIG. 12 is a half sectional view taken along line AA of FIG. 11;

13 is a field pole-stator winding arrangement diagram of the stator windings shown in FIGS. 11 and 12. FIG.

FIG. 14 is a half sectional view in the radial direction of a rotating electric machine for a vehicle according to a third embodiment.

FIG. 15 is a half sectional view in the radial direction of a rotating electric machine for a vehicle according to a fourth embodiment.

FIG. 16 is a half sectional view in the radial direction of a rotating electric machine for a vehicle according to a fifth embodiment.

17 is a diagram showing a phase angle-torque relationship of the vehicular rotating electrical machine shown in FIG.

18 is a diagram showing a phase angle-torque relationship of the vehicular rotating electrical machine shown in FIG.

FIG. 19 is a half sectional view in the radial direction showing a rotating electric machine for a vehicle according to a sixth embodiment.

FIG. 20 is a winding diagram of the stator winding of FIG. 19;

FIG. 21 is a radial half-sectional view of a vehicle drive device using the vehicle rotary electric machine according to the seventh embodiment.

FIG. 22 is a sectional view taken along the line AA in FIG. 21;

FIG. 23 is a partial development view of the inner rotor portion in the circumferential direction in FIG. 21;

FIG. 24 is a stator winding diagram (for a U phase) in FIG. 21;

FIG. 25 is a circuit diagram of the rotating electric machine for a vehicle of FIG. 21;

FIG. 26 is a partially developed view in the circumferential direction of a stator core in a modified embodiment.

FIG. 27 is a partially developed view in the circumferential direction of a stator core in a modified embodiment.

[Explanation of symbols]

 (Examples 1 to 6) 100: engine 110: engine controller 101: crankshaft 102: engine housing 200: rotating electric machine 210: stator of rotating electric machine 220: inner magnetic pole member (inner rotor portion) of rotating electric machine 230: rotating electric machine Outer magnetic pole member (outer rotor portion) 240: bowl-shaped member 250: rotor 260: clutch 300: transmission 400: propeller shaft 500: differential gear 600: wheels 700: converter (bidirectional orthogonal transformer) 800: controller (Control unit) 900: Battery (Example 7) 100: Engine 101: Crankshaft 102: Engine housing 200: Rotating electric machine 210: Stator of the rotating electric machine 220: Inner magnetic pole member (Inner rotor part) of the rotating electric machine 230: Rotation Outer magnetic pole member of electric machine Outer rotor portion) 240: bowl-like member 250: rotor 260: clutch 300: Converter

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5H115 PG04 PI16 PI29 PU09 PU10 PU25 QE10 QI04 RB08 SE04 TB01 5H607 BB01 BB07 BB14 CC03 CC05 CC07 EE02 EE34 FF22 FF24 HH01

Claims (18)

[Claims] 1. A rotor which is disposed between a vehicle engine and a torque transmission mechanism disposed behind the vehicle engine and has the same axial position as a crankshaft, and is driven by the crankshaft. And a stator having a peripheral surface facing the peripheral surface of the rotor and fixed to the housing.In a rotating electrical machine for a vehicle, the rotor has an inner peripheral surface on an outer peripheral surface of the stator. An outer rotor portion that is electromagnetically coupled; and an inner rotor portion whose outer peripheral surface is electromagnetically coupled to the inner peripheral surface of the stator, wherein the stator is fixed between the inner rotor portion and the outer rotor portion. A rotating electric machine for a vehicle, comprising: a stator core; and a stator winding comprising a set of polyphase windings wound around the stator and electromagnetically coupled to the rotor portions. 2. The electric rotating machine for a vehicle according to claim 1, further comprising a bowl-shaped member having a front end fixed to the crankshaft and supporting the rotor portions, wherein the bowl-shaped member is fixed to the crankshaft. An inner cylindrical portion disposed radially inward of the inner rotor portion, and a rear plate portion having a rear end fixed to the inner rotor portion and extending radially outward from a rear end portion of the inner cylindrical portion. And an outer tubular portion extending forward from an outer peripheral end of the wheel plate portion and fixing an outer peripheral surface of the outer rotor portion. The torque transmission mechanism is coupled to the bowl-shaped member. A rotating electrical machine for a vehicle, wherein the rotating electrical machine is driven from the crankshaft through the bowl-shaped member. 3. The rotating electric machine for a vehicle according to claim 2, wherein the torque transmission mechanism is fixed to a rear end surface of a wheel plate portion of the bowl-shaped member. 4. The rotating electric machine for a vehicle according to claim 1, wherein the stator core is provided at a predetermined pitch in a circumferential direction on an inner peripheral surface facing the inner rotor portion and an outer peripheral surface facing the outer rotor portion. Provided slots and teeth, and a core back for separating the two slots between the outer peripheral slot and the inner peripheral slot, wherein the stator winding is the inner peripheral slot And a rotary electric machine for a vehicle, which is wound in series around an outer peripheral side slot. 5. The rotating electric machine for a vehicle according to claim 4, wherein the inner circumferential side slot and the outer circumferential side slot are provided in the same number in a circumferential electromagnetic position with the core back interposed therebetween, and the stator is provided. Each phase winding of the winding is wound around the inner circumferential slot and the outer circumferential slot at the same electrical angle pitch in the circumferential direction at the same electrical angular pitch so that the circumferential cross-sectional shape is substantially U-shaped. A rotating electric machine for a vehicle, characterized in that: 6. The rotating electric machine for a vehicle according to claim 4, wherein the inner peripheral side slot and the outer peripheral side slot of the stator are provided at substantially the same position in the circumferential direction with the core back interposed therebetween, and the fixed number is provided. Each phase winding of the slave winding has a slot pitch corresponding to the magnetic pole pitch, so that the inner circumferential slot and the outer circumferential slot at the same electromagnetic position in the circumferential direction have an axial cross-sectional shape of a square shape. A rotating electric machine for a vehicle, comprising: one stator winding wound and having an opposite winding pattern at substantially every magnetic pole pitch. 7. The rotating electric machine for a vehicle according to claim 4, wherein the same number of the inner peripheral slots and the outer peripheral slots are provided at the same electromagnetic positions in the circumferential direction with the core back interposed therebetween. Each phase winding of the wire has a pitch corresponding to a substantially magnetic pole pitch of the stator winding, and the current direction is opposite at the inner circumferential slot and the outer circumferential slot at the same position in the circumferential electromagnetic direction. A rotating electric machine for a vehicle, wherein the rotating electric machine is wound around the vehicle. 8. The rotating electric machine for a vehicle according to claim 1, wherein said both rotor portions have a magnet type rotor structure having permanent magnets forming field poles. Electric rotating machine for vehicles. 9. The rotating electric machine for a vehicle according to claim 1, wherein said both rotor portions have a cage rotor structure. 10. The rotating electric machine for a vehicle according to claim 1, wherein said both rotor portions have a reluctance type rotor structure. 11. The rotating electric machine for a vehicle according to claim 1, wherein said inner rotor portion has a magnet type rotor structure and said outer rotor portion has a reluctance type rotor structure. 12. A rotating electrical machine for a vehicle according to claim 11, wherein a circumferential center position of said magnetic salient pole portion of said reluctance type rotor structure is relative to a circumferential center position of a field pole of said magnet type rotor structure. A rotating electrical machine for a vehicle, wherein the electrical rotating machine is set at a position advanced by 45 ° to 90 ° in electrical direction in the rotation direction. 13. The rotating electric machine for a vehicle according to claim 4, wherein said stator is fixed to said housing by a rod-shaped support member pressed into said core back in a substantially axial direction. . 14. The rotating electric machine for a vehicle according to claim 1, wherein one of said rotor portions has a magnet type rotor structure, and the other of said rotor portions is formed of a soft magnetic material. A rotating electric machine for a vehicle, having a field coil type rotor structure having a plurality of field poles provided at a predetermined pitch in a direction and field coils for alternately magnetizing the field poles in a circumferential direction. . 15. The rotating electric machine for a vehicle according to claim 14, wherein the other of the two rotor portions has a yoke wound around a field coil and fixed to a housing; A rotation inductor core portion which is provided in a gap between the yoke and forms a part of the rotor and which is magnetized by the field coil to alternately form field poles at a predetermined pitch in a circumferential direction; A rotating electric machine for a vehicle, comprising: 16. A vehicular rotating electrical machine according to claim 14, further comprising a control unit for controlling the current of said stator winding by reversing the polarity of a current supplied to said field coil. Rotating electric machine. 17. The rotating electric machine for a vehicle according to claim 4, wherein the outer peripheral side slot and the inner peripheral side slot are provided in the same number in the circumferential direction with a core back interposed therebetween, and the inner rotor portion and the outer side are provided. A rotating electric machine for a vehicle, wherein the field poles of the rotor section are magnetized in opposite polarities on the side facing the stator core at the same circumferential position. 18. The rotating electric machine for a vehicle according to claim 4, wherein the outer peripheral side slots and the inner peripheral side slots are provided in the same number with a pitch shift of about half a slot in the circumferential direction across the core back. Vehicle electric rotating machine.