JP2008141881A - Controller-integrated rotary electric machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a controller-integrated rotary electric machine wherein the state of disposition of a control board can be improved without adverse influence on a ventilating function. <P>SOLUTION: The controller-integrated rotary electric machine is obtained by integrally assembling a rotary electric machine main body MA and the control board 40. The rotary electric machine MA has a rotor 4 and a stator 3 and has therein a ventilation passage VP for passing cooling air flowing in parallel with a rotating shaft 10 provided in the rotor 4. The control board 40 is substantially rectangular and is attached to an end face of the rotary electric machine MA so that the control board is extended in the direction perpendicular to the rotating shaft 10 of the rotor 4. The control board has a control circuit for controlling the energization of a coil 3b provided on the stator 3. The control board 40 has its corners 40a substantially forming a rectangle disposed in the direction of the axis of the rotating shaft 10 provided in the rotor 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a control device-integrated rotating electrical machine in which an inverter, a control device, and a rotating electrical machine main body that are mounted on a vehicle are integrated, and particularly to a generator motor that doubles as a generator and a starting motor.

  Since the generator motor is mounted instead of the conventional vehicle generator, it is desirable that the inverter, the control device, and the generator motor are integrated from the viewpoint that the mounting space is not changed. A generator motor in which an inverter and a control device are integrated is disclosed in Patent Document 1, for example.

JP 2005-117708 A

  In the configuration of the controller-integrated rotating electrical machine according to the prior art, one side of the substantially rectangular control board is attached so as to be parallel to the horizontal tangent line of the rotating electrical machine body, and the ventilation port provided on the end surface of the rotating electrical machine body is provided. In order to prevent clogging, there is a large part of the control board that protrudes from the cylindrical region extending in the axial direction on the outer periphery of the stator of the rotating electrical machine main body, which causes problems such as interference depending on the layout of the engine and the vehicle body. In addition, the control board is vibrated by the vibration of the engine, and since the protrusion is large, the vibration is amplified and a large vibration acceleration is applied to the control board, and the electronic components and circuits mounted on the control board are damaged. There was a problem.

  The present invention seeks to obtain a controller-integrated dynamoelectric machine that can improve the arrangement of control boards without adversely affecting the ventilation function.

  In the controller-integrated rotating electrical machine according to the present invention, the rotating electrical machine main body having a rotor and a stator and having a ventilation path for passing cooling air flowing parallel to a rotating shaft provided in the rotor, and the rotating A substantially rectangular control board having a control circuit that is attached to an end face of the electric machine body so as to extend in a direction perpendicular to the rotation axis of the rotor and that controls the energization of the coil provided in the stator; In the control device integrated rotating electrical machine in which the control board and the control board are integrally assembled, the control board is disposed in the axial direction of the rotary shaft provided on the rotor at one of the corners forming a substantially square shape. Is.

  According to the present invention, it is possible to obtain a controller-integrated dynamoelectric machine that can improve the arrangement of control boards without adversely affecting the ventilation function.

Embodiment 1 FIG.
A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a longitudinal sectional view showing the overall configuration of the controller-integrated rotating electrical machine according to the first embodiment. FIG. 2 is an end view of the configuration of the controller-integrated rotating electrical machine according to the first embodiment as viewed from the rear.

1 and 2, the controller-integrated rotating electrical machine has a stator 3 supported by a rear bracket 1 and a front bracket 2, and a resin case member 21 is disposed on the rear side of the stator 3. A rectangular control that has a power circuit 15 that performs switching control of current supplied to the stator coil 3b wound around the stator 3 and a control circuit (not shown) that controls the power circuit 15, and forms a substantially rectangular outer shape. The substrate 40 is disposed inside the resin case member 21. The controller-integrated rotating electrical machine has a rotor 4 supported by bearings 13 and 14 on the rear bracket 1 and the front bracket 2, and the rotor 4 is provided with a field coil 5. Is rotatable about a rotating shaft 10.
The stator 3 supported by the rear bracket 1 and the front bracket 2 and the rotor 4 having the rotating shaft 10 constitute a rotating electrical machine main body MA.

A ventilation fan 7 is mounted on the rotary shaft 10 on the axially rear end surface of the rotor 4, and air is sucked from the rear end side through the ventilation port 17 provided in the rear bracket 1 and constituting the ventilation path VP during rotation. The power circuit 15, the bearing 13, the brush 8, the brush holder 9, the stator coil 3b, and the like are cooled.
A resin case member 21 is attached to the rotating electrical machine body MA. The resin case member 21 has a cylindrical metal fitting projection CP integrally fixed to the central portion thereof, and a cylindrical fitting projection RP provided on the rear bracket 1 in the rotating electrical machine main body MA. Fits and attaches.
An annular sensor stator 11 constituting a rotor position detecting sensor is fitted into the cylindrical fitting protrusion CP fixed to the resin case member 21 and attached to the resin case member 21. A sensor rotor 12 attached to the rotary shaft 10 is provided so as to face the inner peripheral surface of the sensor stator 11. The sensor stator 11 is provided with a sensor coil 11 a that generates a rotor position detection signal by relative rotational movement with the sensor rotor 12.
The control board 40 is equipped with a sensor converter (not shown) that converts the detection signal of the sensor coil 11a into an angle signal, and the detection signal of the sensor coil 11a passes through the sensor converter to a control circuit ( (Not shown).

A ventilation path VP is formed on the rear end surface of the resin case member 21 so that the cooling air sucked by the ventilation fan 7 through the ventilation port 17 passes between the fins of the heat sink 20 attached to the power circuit 15. A ventilation opening 50 is provided.
A connector 102 (see FIG. 2) for communicating with an engine control unit (not shown) or the like is attached to the resin case member 21, and a control circuit board 40 on which a control circuit (not shown) is mounted from the connector 102. Is connected to the signal line.
The control board 40 is made of glass epoxy resin, and has a substantially rectangular shape in order to use the material effectively. The control board 40 is disposed such that one of the corners 40a, 40b, 40c, and 40d forming the substantially square shape is opposed to the rotary shaft 10 provided on the rotor 4 in the axial direction of the rotary shaft 10. The control board 40 is disposed so that a bisector of an angle formed by two sides of the control board 40 sandwiching the corner 40a passes through the vicinity of the rear axis of the rotary shaft 10 provided in the rotor 4. The control board 40 is arranged so that the bisector of the angle formed by the two sides of the control board 40 sandwiching the corner 40 a coincides with the rear axis of the rotary shaft 10 provided in the rotor 4. Further, the control board 40 is arranged so as not to cover the rear side of the fins of the heat sink 20, and the ventilation openings 50 are opened so that almost all the fins can be seen. The resin case member 21 is provided with a cover member 101 that covers the control board 40.

In the first embodiment, since the control board 40 does not block the ventilation port 50 constituting the cooling passage VP, the amount of cooling air passing through the heat sink 20 is increased, and the cooling performance of the power circuit 15 is improved. Failure and deterioration due to temperature rise of switching elements and solder can be prevented. Therefore, the life and reliability of the controller-integrated rotating electrical machine can be improved.
Further, since the bisector of the angle formed by the two sides of the control board 40 sandwiching the corner 40a of the control board 40 passes through the vicinity of the rear side of the rotary shaft 10 in the rotor 4, the space behind the rotary shaft 10 is increased. Since the control board 40 can be effectively used and the protrusion of the control board 40 from the outer peripheral cylindrical portion of the bracket 1 to the outside can be reduced, the size of the controller-integrated rotating electrical machine can be reduced, and the controller-integrated rotating electrical machine can be applied to the engine. Mounting becomes easy.

(1A) According to the first embodiment of the present invention, the rotor 4 and the stator 3, the front bracket 2 and the rear bracket 1 that hold the rotor 4 and the stator 3, and the rotary shaft 10 provided on the rotor 4 are provided. A rotating electrical machine main body MA provided in a rear bracket 1 in which a ventilation port VP constituting a ventilation passage VP for passing cooling air flowing in parallel forms an end face thereof, and a rear bracket forming an end face of the rotating electrical machine main body MA. A resin case member 21 having a ventilation port 50 which is fitted and attached to 1 and constitutes a ventilation path VP, and an axis line of the rotary shaft 10 provided on the rotor 4 on the end surface of the rotating electrical machine main body MA. Switching control operation of current that is extended and attached to the resin case member 21 and energized to the stator coil 3b provided on the stator 3 And a control board 40 having a rectangular shape having a control circuit for supplying a control signal for controlling the power circuit 15 for performing the control, and the rotary electric machine main body MA and the control board 40 are integrally assembled. In the apparatus-integrated rotating electrical machine, the control board 40 has a rotating shaft 10 provided on the rotor 4 with one of the corner portions 40a, 40b, 40c, and 40d forming a substantially square shape. A bisector of an angle formed by two sides of the control board 40 sandwiching the corner 40a and passing through the vicinity of the axis of the rotary shaft 10 provided in the rotor 4 is preferably a rotary shaft. Since it coincides with the 10 axis, it is not the area where the ventilation openings 17 and 50 constituting the ventilation path VP are provided, but the opposed portion in the axial direction of the rotating shaft 10 which is a useless part as the ventilation function The control board 40 by placing the corner portion 40a, it is possible to obtain a controller-integrated electric rotating machine capable of improving the arrangement state of the control board 40 without adversely affecting the ventilation function.

(1B) According to the first embodiment of the present invention, in the configuration in the item (1A), the ventilation fan 7 provided on the rotating shaft 10 of the rotor 4 and the control circuit provided on the control board 40 And a power circuit 15 for performing a switching control operation of a current supplied to the stator coil 3b provided in the stator 3 and provided in the end face of the rotating electrical machine main body MA by the ventilation fan 7. Since the power circuit 15 is cooled by the cooling air from the flow passage VP flowing through the air passages 17 and 50, it is not a region where the air vents 17 and 50 constituting the air passage VP are provided but a wasteful portion as the air ventilation function. The corner 40a of the control board 40 is disposed in the axially facing portion of the rotary shaft 10 so that the control base is not adversely affected. It is possible to improve the placement conditions, it is possible to obtain a controller-integrated electric rotating machine power circuit 15 can be cooled reliably performing current switching control operation of the current applied to the stator coil 3b provided on the stator 3.
Specifically, metal brackets 1 and 2 that hold the rotor 4 and the stator 3, a power circuit 15 including a stator current switching circuit that supplies a multiphase stator current to the coil 3b of the stator 3, and a stator current switching circuit. In order to cool the power circuit 15 composed of the stator current switching circuit, the rotor 4 is cooled in the controller-integrated rotating electrical machine in which the substantially square control board 40 having the control circuit for controlling the power circuit 15 composed of Are provided with ventilation fans 7, and ventilation openings 17 and 50 for passing cooling air are provided at the rear end of the rotating electrical machine main body MA. The control board 40 has a corner 40a that forms a substantially rectangular shape. , 40b, 40c, 40d, one corner 40a is disposed opposite to the rotary shaft 10 provided in the rotor 4 in the axial direction of the rotary shaft 10. Thus, the control board 40 has a bisector of an angle formed by two sides sandwiching the corner 40a of the control board 40 so as not to interfere with the rear vents 17 and 50, that is, when the control board 40 is a square, the diagonal line is formed. The rotor 4 is disposed so as to pass near the rear of the rotating shaft 10. With this configuration, the following specific effects can be obtained.
Since the control board 40 does not block the ventilation openings 17 and 50 for cooling, the cooling performance is improved, and the deterioration due to the temperature rise of the stator current switching circuit elements and the solder constituting the power circuit 15 can be prevented. Therefore, the life of the product can be improved.
The corner 40a of the control board 40 is disposed in opposition to the rotary shaft 10 provided on the rotor 4 in the axial direction of the rotary shaft 10 and is divided into two equal angles formed by two sides sandwiching the corner 40a of the control board 40 Since the control board 40 is arranged so that the line passes near the rear side of the rotating shaft 10 in the rotor 4, the space behind the rotating shaft 10 can be effectively used, and the protrusion of the control board 40 from the outer peripheral cylindrical portion of the bracket 1 to the outside is possible. Since it can be reduced, the size of the rotating electrical machine can be reduced.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIG. FIG. 3 is an end view of the configuration of the controller-integrated rotating electrical machine according to the second embodiment as viewed from the rear.
In the second embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in the first embodiment described above, and exhibits the same operation. In the drawings, the same reference numerals indicate the same or corresponding parts.

In the second embodiment, the control board 40 has a square shape, and the diagonal line of the control board 40, that is, the bisector of the two sides forming the corner 40 a of the control board 40 is approximately the rotation axis 10 of the rotor 4. The bisector of the angle formed by the two sides of the control board 40 that is disposed so as to pass near the rear and preferably sandwich the corner portion 40a coincides with the rear axis of the rotary shaft 10 provided in the rotor 4. The control board 40 is arranged on the front.
The entire control board 40 is disposed within a cylindrical projection region range PS in which the outline of the outer peripheral portion of the rotating electrical machine main body MA is extended in the axial direction, and the control board 40 does not protrude to the outer periphery of the rotating electrical machine main body MA. It is provided inside.

In the second embodiment, since the control board 40 does not block the ventilation port 50 that constitutes the cooling passage VP (see FIG. 1) provided in the resin case member 21, the heat sink 20 of the power circuit 15. The amount of cooling air passing through the passage increases, the cooling performance of the power circuit 15 is improved, and failure and deterioration due to the temperature rise of the switching element and solder can be prevented. Therefore, the life and reliability of the controller-integrated rotating electrical machine can be improved.
Further, since the diagonal line of the control board 40 is arranged so as to pass near the rear of the rotor rotation shaft 10, the space behind the rotation shaft 10 can be effectively used, and the protrusion of the control board 40 from the bracket outer cylindrical portion to the outside can be eliminated. In addition, the controller-integrated rotating electrical machine becomes smaller and can be easily mounted on the engine. Since the protrusion of the control board 40 from the rear bracket 1 to the outside is eliminated, it is possible to prevent the protruding portion of the resin case member 21 from being hit and damaged when the control device-integrated rotating electrical machine is transported or attached. Since there is no protrusion to the outside, the degree of freedom in the mounting direction of the controller-integrated rotating electrical machine to the engine is increased, and it can be mounted in an advantageous direction against vibration, heat reception, cooling, etc. Electrical reliability is improved.

  The control board 40 may be a ceramic board instead of a glass epoxy board. Since the substrate thermal conductivity can be improved by making the control substrate 40 a ceramic substrate and the cooling performance of the control substrate 40 can be improved, the corner portion 40a, which is one of the corners of the control substrate 40, is disposed in the vicinity of the rotary shaft 10. At the same time, it becomes easy to reduce the control board 40 and eliminate the protrusion. Further, since the ceramic substrate is expensive, it is effective to make it square in order to reduce the material cost, and the diagonal line in the control substrate 40 is arranged so as to pass near the rear of the rotating shaft 10 to effectively use the space. When combined with the effect, it can be configured at a lower cost.

(2A) According to the second embodiment of the present invention, the cylindrical projection region range PS in the axial direction of the outer peripheral portion of the rotating electrical machine main body MA in the configuration in the item (1A) or the item (1B) in the first embodiment. The whole of the control board 40 is disposed inside, and the control board 40 is provided on the inner side of the rotary electric machine main body MA without protruding to the outer periphery, so that the ventilation openings 17 constituting the ventilation path VP (see FIG. 1), The corner 40a of the control board 40 is disposed in the axially facing portion of the rotating shaft 10, which is a useless part of the ventilation function, not in the area where the air flow function 50 is provided, so that the control board 40 is not adversely affected. In addition, it is possible to obtain a controller-integrated rotating electrical machine that can improve the reliability of the control board 40 by preventing breakage of the control board 40 and increasing the degree of freedom of attachment.
That is, in the configuration in the item (1A) or the item (1B) in the first embodiment, the control board 40 is provided on the inner side without protruding to the outer periphery of the rotating electrical machine main body MA. With this configuration, the following specific effects can be achieved.
-Since the control board 40 does not protrude from the outer peripheral cylindrical portion of the rotating electrical machine body MA to the outside, the control board portion that protrudes when the control device-integrated rotating electrical machine is transported or attached is not hit and damaged.
・ Since there is no protrusion to the outside, the degree of freedom in the mounting direction of the controller-integrated rotating electrical machine to the engine is increased and it can be mounted in an advantageous direction against vibration, heat reception, cooling, etc. The reliability of the rotating electrical machine is improved.

(2B) According to the second embodiment of the present invention, in any configuration in the items (1A) and (1B) in the first embodiment and the (2A) term in the second embodiment, the control board 40 Is made of ceramic and has a square shape. Therefore, in the axial direction with respect to the rotary shaft 10, which is a useless part as a ventilation function, not an area where the ventilation openings 17 and 50 constituting the ventilation path VP (see FIG. 1) are provided. By arranging the corner 40a of the control board 40 in the opposite part, it is possible to improve the arrangement of the control board 40 without adversely affecting the ventilation function, and the configuration is compact and advantageous arrangement during ventilation can be achieved with high reliability and low cost. Thus, it is possible to obtain a controller-integrated rotating electrical machine that can be manufactured.
That is, in any configuration in the items (1A) and (1B) in the first embodiment and the item (2A) in the second embodiment, the control substrate 40 is made of ceramic and has a square shape. With this configuration, the following specific effects can be achieved.
When the control board 40 is made of ceramic, the cost can be reduced by making it square, and when the diagonal line of the control board 40 passes through the vicinity of the rear side of the rotary shaft 10 in the rotor 4, the protrusion is outward. In addition to being able to reduce or eliminate it, the area of the end face of the controller-integrated rotating electrical machine can be used effectively.

Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIG. FIG. 4 is an end view of the configuration of the controller-integrated rotating electrical machine according to the third embodiment as viewed from the rear.
In the third embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in the first embodiment or the second embodiment described above, and exhibits the same operation. It is. In the drawings, the same reference numerals indicate the same or corresponding parts.

In the third embodiment, the bisector of the angle formed by the two sides of the control board 40 sandwiching the corner 40a of the control board 40, that is, when the control board 40 is square, the diagonal line of the rotating shaft 10 in the rotor 4 is used. The control board 40 is disposed so as to pass through the vicinity of the rear, and preferably a rear half of the rotary shaft 10 provided on the rotor 4 has a bisector of an angle formed by two sides of the control board 40 sandwiching the corner 40a. The control board 40 is arranged so as to coincide with the axis line. A rotor position detecting device is used as a rotor position detecting sensor for measuring the rotational speed and rotation angle (position) of the rotor 4 at the corner 40a of the control board 40 disposed in the rotor 4 near the rear side of the rotating shaft 10. 200 is installed.
The rotor position detecting device 200 has the same configuration as that of the sensor stator 11 shown in FIG. 1 according to the first embodiment and facing the inner surface of the sensor rotor 12 attached to the rotating shaft 10. The sensor stator 11 having 11 a is attached to the corner 40 a of the control board 40.

In the third embodiment, the rotor position detection device 200 is placed separately from the control board 40 by mounting the sensor stator 11 (see FIG. 1) of the rotor position detection device 200 on the control board 40. Compared to the above, the size of the rotating electrical machine can be reduced by rationalizing wiring and saving space by integration with the control board 40.
Further, the cost can be reduced by rationalizing the wiring and integrating the rotor position detection device 200 and the control board 40.

(3A) According to Embodiment 3 of the present invention, in any of (1A) and (1B) terms in Embodiment 1 and (2A) and (2B) terms in Embodiment 2 In the configuration, since the rotor position detection sensor including the sensor stator 11 (see FIG. 1) of the rotor position detecting device 200 is provided on the corner 40a of the control board 40, the ventilation path VP (see FIG. 1) is configured. The corner 40a of the control board 40 is disposed not in the region where the ventilation openings 17 and 50 to be provided but in the portion facing the rotating shaft 10, which is a useless portion as a ventilation function, and is controlled without adversely affecting the ventilation function. It is possible to obtain a controller-integrated rotating electrical machine that can improve the arrangement state of the substrate 40, reduce the overall configuration, and reduce the cost.
That is, in the configuration in any one of the items (1A) and (1B) in the first embodiment and the items (2A) and (2B) in the second embodiment, the rotor position is detected on the control board 40. A rotor position detection sensor comprising the device 200 is provided. With this configuration, the following specific effects can be achieved.
When the rotor position detection device 200 is provided separately from the control substrate 40 by providing the rotor position detection sensor comprising the sensor stator 11 (see FIG. 1) of the rotor position detection device 200 on the control substrate 40. In comparison, the control device-integrated rotating electrical machine can be reduced in size by rationalizing wiring and space saving by integration with the control board 40.
The manufacturing cost of the controller-integrated rotating electrical machine can be reduced by rationalizing the wiring and integrating the rotor position detecting device 200 and the control board 40.

Embodiment 4 FIG.
A fourth embodiment of the present invention will be described with reference to FIG. FIG. 5 is an end view of the configuration of the controller-integrated rotating electrical machine according to the fourth embodiment as viewed from the rear.
In the fourth embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in any of the first to third embodiments described above, and is similar. It has an effect. In the drawings, the same reference numerals indicate the same or corresponding parts.

In the fourth embodiment, the bisector of the angle formed by two sides of the control board 40 sandwiching the corner 40a of the control board 40, that is, when the control board 40 is square, the diagonal line of the rotating shaft 10 in the rotor 4 is used. The control board 40 is disposed so as to pass through the vicinity of the rear, and preferably a rear half of the rotary shaft 10 provided on the rotor 4 has a bisector of an angle formed by two sides of the control board 40 sandwiching the corner 40a. The control board 40 is arranged so as to coincide with the axis line. A Hall IC sensor 210 serving as a rotor position detection sensor for measuring the rotation speed and rotation angle (position) of the rotor 4 is provided at a corner 40a of the control board 40 disposed near the rear of the rotation shaft 10 in the rotor 4. ˜212 are mounted, and a permanent magnet (not shown) is attached to the rotary shaft 10 (see FIG. 1) so as to face the Hall IC sensors 210 to 212.
The permanent magnet and the Hall IC sensors 210 to 212 are configured in the configuration of the first embodiment, as shown in FIG. 1, the sensor rotor 12 attached to the rotating shaft 10, and the sensor stator that faces the sensor rotor 12 on the inner peripheral surface. 11 is provided instead of 11.

  In the fourth embodiment, by using the permanent magnet and the Hall IC sensors 210 to 212 as the rotor position detecting sensor, the rotor position can be detected at a low cost and there is a synergistic effect of cost reduction.

(4A) According to the fourth embodiment of the present invention, the rotor position detection sensor comprising the sensor stator 11 (see FIG. 1) of the rotor position detecting device 200 in the configuration in the above-mentioned item (3A) in the third embodiment. Instead, since the Hall IC element composed of the Hall IC sensors 210 to 212 is used as the rotor position detection sensor, the ventilation function is not an area where the ventilation openings 17 and 50 constituting the ventilation path VP (see FIG. 1) are provided. By arranging the corner 40a of the control board 40 in a portion facing the rotating shaft 10, which is a useless part, the arrangement of the control board can be improved without adversely affecting the ventilation function, and the overall configuration can be reduced and the cost can be reduced. It is possible to obtain a control device-integrated rotating electrical machine that can efficiently promote reduction.
That is, in the configuration according to the item (3A) in the third embodiment, instead of the rotor position detection sensor including the sensor stator 11 (see FIG. 1) of the rotor position detection device 200, the rotor position detection sensor is a Hall IC sensor. A Hall IC element composed of 210 to 212 is used. With this configuration, the following specific effects can be achieved.
By using a Hall IC element composed of a permanent magnet and Hall IC sensors 210 to 212 as a rotor position detection sensor, the rotor position can be detected at a low cost, and there is a synergistic effect of cost reduction.

Embodiment 5. FIG.
A fifth embodiment of the present invention will be described with reference to FIGS. FIG. 6 is an end view of the configuration of the controller-integrated dynamoelectric machine according to the fifth embodiment viewed from the rear. FIG. 7 is an end view showing the configuration of the resolver in the fifth embodiment. FIG. 8 is a longitudinal sectional view showing the structure of the resolver in the fifth embodiment.
In the fifth embodiment, the configuration other than the specific configuration described here has the same configuration contents as the configuration in any of the first to fourth embodiments described above, and is similar. It has an effect. In the drawings, the same reference numerals indicate the same or corresponding parts.

In the fifth embodiment, when the control substrate 40 is a square bisector formed by two sides sandwiching the corner portion 40a of the control board 40, that is, when the control board 40 is a square, the diagonal line passes near the rear of the rotating shaft 10 in the rotor 4. The control board 40 is arranged, and preferably the angle bisector formed by the two sides of the control board 40 sandwiching the corner 40a coincides with the rear axis of the rotary shaft 10 provided in the rotor 4 Thus, the control board 40 is arranged. A sensor stator 220a of a resolver 220 serves as a rotor position detection sensor for measuring the rotation speed and rotation angle (position) of the rotor at a corner 40a of the control board 40 disposed near the rear of the rotation shaft 10 in the rotor 4. Is installed.
A resolver 220 as a rotor position detection sensor includes a sensor rotor 220b and a sensor stator 220a attached to the rotating shaft 10 (see FIG. 1). The sensor rotor 220b and the sensor stator 220a are the same as those in the first embodiment. 1 is provided in place of the sensor rotor 12 attached to the rotary shaft 10 and the sensor stator 11 facing the sensor rotor 12 on the inner peripheral surface thereof.

  In the fifth embodiment, it is possible to detect the rotor position with high accuracy by using the sensor stator 220a of the resolver 220 as the rotor position detection sensor.

  A signal line for deriving an output signal of the sensor stator 220a of the resolver 220 is formed by a terminal 221 punched out of a metal plate. The sensor stator 220a is directly attached to the control board 40, and the terminal 221 is connected to the control board 40 by soldering. By making the signal line into a terminal, problems due to disconnection can be eliminated.

(5A) According to the fifth embodiment of the present invention, the rotor position detection sensor comprising the sensor stator 11 (see FIG. 1) of the rotor position detecting device 200 in the configuration in the item (3A) in the third embodiment. Instead, since the sensor stator 220a of the resolver 220 is used as the rotor position detection sensor, it is useless as a ventilation function rather than a region where the ventilation openings 17 and 50 constituting the ventilation path VP (see FIG. 1) are provided. The corner portion 40a of the control board 40 is arranged in the axially facing portion of the rotating shaft 10 which is a simple part, so that the arrangement state of the control board 40 can be improved without adversely affecting the ventilation function, and the overall configuration is reduced. In addition, it is possible to obtain a controller-integrated rotating electrical machine that can accurately detect the rotor position.
That is, in the configuration in the item (3A) in the third embodiment, instead of the rotor position detection sensor including the sensor stator 11 (see FIG. 1) of the rotor position detection device 200, the rotor position detection sensor is the resolver 200. The stator 220a is used. With this configuration, the following specific effects can be achieved.
By using the stator 220a of the resolver 220 as a rotor position detection sensor, the rotor position can be detected with high accuracy.

It is a longitudinal cross-sectional view which shows the whole structure of the control apparatus integrated rotary electric machine in Embodiment 1 by this invention. It is the end elevation which looked at the structure of the control apparatus integrated rotating electrical machine in Embodiment 1 by this invention from the back. It is the end elevation which looked at the structure of the control apparatus integrated rotary electric machine in Embodiment 2 by this invention from the back. It is the end elevation which looked at the structure of the control apparatus integrated rotary electric machine in Embodiment 3 by this invention from the back. It is the end elevation which looked at the structure of the control apparatus integrated rotary electric machine in Embodiment 4 by this invention from the back. It is the end elevation which looked at the structure of the control apparatus integrated rotary electric machine in Embodiment 5 by this invention from the back. It is an end elevation which shows the structure of the resolver in Embodiment 5 by this invention. It is a longitudinal cross-sectional view which shows the structure of the resolver in Embodiment 5 by this invention.

Explanation of symbols

  1 Rear bracket, 2 Front bracket, 3 Stator, 3b Stator coil, 4 Rotor, 7 Fan for ventilation, 8 Brush, 9 Brush holder, 10 Rotating shaft, 11 Sensor stator, 12 Sensor rotor, 13, 14 Bearing, 15 Power circuit , 17 Ventilation port, 21 Resin case member, 40 Control board, 50 Ventilation port, 101 Cover member, 200 Rotor position detection device, 210-212 Hall IC sensor, 220 resolver, 220a sensor stator, 220b sensor rotor.

Claims (7)

  A rotating electrical machine main body having a rotor and a stator and having a ventilation path for passing cooling air flowing in parallel with the rotating shaft provided in the rotor, and an end surface of the rotating electrical machine body perpendicular to the rotating shaft of the rotor And a control board having a substantially rectangular control board having a control circuit for controlling energization to a coil provided in the stator and extending in a direction, and the rotary electric machine main body and the control board are integrally assembled. In the apparatus-integrated dynamoelectric machine, the control board is provided with one of corners forming a substantially rectangular shape in the axial direction of a rotation shaft provided in the rotor. .   A ventilation fan provided on the rotating shaft of the rotor, and a power circuit that performs a switching operation of a current that is controlled by a control circuit provided on the control board and is supplied to a coil provided on the stator, 2. The controller-integrated rotating electrical machine according to claim 1, wherein the power circuit is cooled by cooling air flowing through a ventilation path of the rotating electrical machine body by a ventilation fan.   3. The controller-integrated rotating electrical machine according to claim 1, wherein the entire control board is disposed within a projection region range in the axial direction of the outer peripheral portion of the rotating electrical machine main body.   The control apparatus-integrated dynamoelectric machine according to any one of claims 1 to 3, wherein the control board is made of ceramic and has a square shape.   5. The controller-integrated rotating electrical machine according to claim 1, wherein a rotor position detection sensor is provided on the control board.   6. The controller-integrated rotating electrical machine according to claim 5, wherein a Hall IC element is used as the rotor position detection sensor.   6. The controller-integrated rotating electrical machine according to claim 5, wherein the rotor position detection sensor is a sensor stator of a resolver.

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