JP2022178757A - Rotary electric machine integrated with control device - Google Patents

Abstract

To obtain a rotary electric machine integrated with a control device having an inverter assembly miniaturized in a radial direction.SOLUTION: A rotary electric machine integrated with a control device includes: a drive unit having a rotor, a stator, and a bracket; and an inverter assembly provided with a power module, a heat sink, a control module arranged on the other side in an axial direction of the power module at intervals, a high potential side connection member arranged between the control module and the heat sink, a case to which the high potential side connection member is fixed, and a filter unit in which a high potential side terminal is connected to the high potential side connection member and a low potential side terminal is connected to the heat sink. The filter unit is arranged on the other side in an axial direction of the control module. The control module has a plurality of through holes. The high potential side terminal is electrically connected to the high potential side connection member via a first intermediate connection member arranged by penetrating a first through hole. The low potential side terminal is connected to the heat sink via a second intermediate connection member arranged by penetrating a second through hole.SELECTED DRAWING: Figure 1

Description

The present application relates to a controller-integrated dynamoelectric machine.

A rotating electrical machine for a vehicle includes, in addition to the rotating electrical machine, a control device that controls the rotating electrical machine. Rotating electrical machines for vehicles are required to be space-saving and easy to mount, and to reduce the size of wiring harnesses that connect the rotating electrical machines and control devices. Especially when a rotating electric machine is mounted in an engine room of an automobile, it is required that the rotating electric machine can be installed in a limited space. In the case of a vehicle model in which only a small space can be secured in the radial direction of the rotating electric machine, there are problems that parts interfere with each other, and that work space for attaching connectors and fixing screws to external devices cannot be secured. In the worst case, the rotating electrical machine cannot be installed because the rotating electrical machine cannot fit into the space. Thus, the layout in the engine room restricts the mounting of the rotating electric machine. Therefore, a controller-integrated rotating electrical machine, which is a mechanical-electrically integrated rotating electrical machine in which a rotating electrical machine and a control device are integrated, has been developed.

In a control device for a controller-integrated rotating electrical machine, the smoothing capacitor is composed of n smoothing capacitors corresponding to the power modules, and is on the same plane as the power modules on the heat sink, between the power modules, and A technique has been disclosed in which the power modules located on one end side are arranged in a dispersed manner at locations adjacent to each other (see, for example, Patent Literature 1).

JP 2016-226096 A

In Patent Document 1, smoothing capacitors for suppressing surges and output voltage fluctuations at the time of switching are distributed in the vicinity of the power module, thereby reducing the circuit loop related to voltage fluctuations at the time of switching and suppressing the inductance. can be done. However, when mounting a plurality of capacitors between power modules, a space for accommodating the capacitors is required in the gap between the power modules. Therefore, it is necessary to enlarge the gap between the power modules, so depending on the number and size of the capacitors, the entire inverter assembly, which is the control device, expands in the radial direction, and the control device-integrated rotating electrical machine is radially large. There was a problem of making In addition, the power module has a switching element, and when a filter function component that reduces switching noise during control is mounted on the inverter assembly, the area occupied by the filter function component is large and the entire inverter assembly expands in the radial direction. There is a problem that the controller-integrated rotating electrical machine is radially enlarged.

SUMMARY OF THE INVENTION Accordingly, an object of the present application is to obtain a controller-integrated rotating electrical machine that includes an inverter assembly that suppresses an increase in size in the radial direction.

A controller-integrated dynamoelectric machine disclosed in the present application includes a rotating shaft, a rotor having a field core wound with a field winding and rotating integrally with the rotating shaft, and a rotor radially outside the field core. A stator having a stator core wound with stator windings, a field core and the stator core are covered, and one end side and the other end side of the rotating shaft are held via bearings. a power module having a switching element for turning on and off the supply current to the stator winding; and the power module is thermally connected to the surface on the other side in the axial direction. A control module having a heat sink for cooling and a control circuit for controlling switching elements and arranged on the other side of the power module in the axial direction with a gap therebetween is connected to a module high-potential side terminal of the power module. a high-potential-side connecting member disposed between the and the heat sink; a case to which the high-potential-side connecting member is fixed and covering at least a portion of one axial side of the control module; a filter unit electrically connected to the side connection member and a low potential side terminal electrically connected to the heat sink; and an inverter assembly disposed on the other axial side of the bracket and fixed to the bracket. , the filter unit is arranged on the other side of the control module in the axial direction, the control module has a plurality of through-holes penetrating in the axial direction, and the high potential side terminal is arranged through the first through-hole. The low potential side terminal is electrically connected to the high potential side connection member through the first intermediate connection member, and the low potential side terminal is connected to the heat sink through the second intermediate connection member arranged through the second through hole. It is what is done.

According to the controller-integrated dynamoelectric machine disclosed in the present application, the filter unit is arranged on the other side of the control module in the axial direction, the control module has a plurality of through holes penetrating in the axial direction, and the high potential side terminal is It is electrically connected to the high-potential-side connecting member via the first intermediate connecting member arranged through the first through-hole, and the low-potential-side terminal is arranged through the second through-hole. Since the filter unit is connected to the heat sink via the two intermediate connection members, there is no need for an accommodation area for accommodating the filter unit in the gap between the power modules, and there is no need to enlarge the gap between the power modules. It is possible to obtain a controller-integrated dynamoelectric machine that includes an inverter assembly that suppresses an increase in size in the radial direction.

1 is a cross-sectional view showing an outline of a controller-integrated dynamoelectric machine according to Embodiment 1. FIG. 1 is a cross-sectional view showing a main part of a controller-integrated dynamoelectric machine according to Embodiment 1; FIG. 1 is a cross-sectional view showing a main part of a controller-integrated dynamoelectric machine according to Embodiment 1; FIG. FIG. 4 is a cross-sectional view showing a main part of another controller-integrated dynamoelectric machine according to Embodiment 1; 2 is a plan view of a filter unit of the controller-integrated dynamoelectric machine according to Embodiment 1. FIG. 3 is a perspective view of a filter unit of the controller-integrated dynamoelectric machine according to Embodiment 1. FIG. 3 is a plan view showing a small unit of the filter unit of the controller-integrated dynamoelectric machine according to Embodiment 1. FIG. FIG. 3 is a perspective view showing a small unit of the filter unit of the controller-integrated dynamoelectric machine according to Embodiment 1; 3 is an exploded perspective view showing a small unit of the filter unit of the controller-integrated dynamoelectric machine according to Embodiment 1. FIG. FIG. 10 is a cross-sectional view showing a main part of a controller-integrated dynamoelectric machine according to Embodiment 2; FIG. 11 is a perspective view showing a main part of a case of a controller-integrated rotating electric machine according to Embodiment 3; FIG. 11 is a perspective view showing a main part of a filter unit of a controller-integrated dynamoelectric machine according to Embodiment 4; FIG. 11 is a perspective view of a filter unit of a controller-integrated dynamoelectric machine according to Embodiment 5; FIG. 11 is a perspective view of a filter unit of a controller-integrated dynamoelectric machine according to Embodiment 5;

A controller-integrated rotating electrical machine according to an embodiment of the present application will be described below with reference to the drawings. In each figure, the same or corresponding members and parts are denoted by the same reference numerals. It should be noted that the size and scale of each corresponding component are independent of each other in the illustrations between the figures.

Embodiment 1.
FIG. 1 is a cross-sectional view showing an outline of a controller-integrated rotating electrical machine 1 according to Embodiment 1, and FIG. FIG. 3 is a cross-sectional view showing the main part of the controller-integrated rotating electrical machine 1, showing the connection part of the filter unit 19, and FIG. 5 is a plan view of the other axial side of the filter unit 19 of the control device-integrated rotating electrical machine 1, and FIG. 6 is a control device-integrated rotating electrical machine 1 7 is a plan view showing a small unit 22 of the filter unit 19 with the insulating member 19c removed from FIG. 5; FIG. 8 is a small unit of the controller-integrated electric rotating machine 1; 22, and FIG. 9 is an exploded perspective view showing the small unit 22 of the controller-integrated dynamoelectric machine 1, which is an exploded view of the small unit 22 in the axial direction. The controller-integrated rotating electrical machine 1 includes a driving section 29 that is a rotating electrical machine main body, and an inverter assembly 30 that is a control device. The drive unit 29 has a rotor 2 and a stator 3 and operates as an electric motor that drives an internal combustion engine (not shown). Alternatively, the drive unit 29 functions as a generator that is driven by the internal combustion engine to generate power. The inverter assembly 30 is arranged side by side with the drive section 29 on the other side in the axial direction of the drive section 29 and controls the power supplied to the drive section 29 . The inverter assembly 30 is fixed to the driving portion 29, and the driving portion 29 and the inverter assembly 30 are integrated.

<Driver 29>
The drive unit 29 accommodates the rotating shaft 11, the rotor 2 that rotates integrally with the rotating shaft 11, the stator 3 that is disposed outside the rotor 2, and holds the rotating shaft 11 rotatably. and a bracket.

The rotor 2 has a field winding 2a and a field core 2b around which the field winding 2a is wound. The stator 3 arranged radially outside the field core 2b has a multi-phase stator winding 3a and a stator core 3b around which the stator winding 3a is wound. The multi-phase stator windings 3a are, for example, one set of three-phase windings or two sets of three-phase windings, but are not limited to these, and are set according to the type of rotating electric machine. The bracket covers the outside of the field core 2b and the stator core 3b. The bracket includes a front bracket 4 and a rear bracket 5. The front bracket 4 holds one end side of the rotating shaft 11 via the bearing 7 and covers the front side, which is one side of the rotor 2 and the stator 3 . The rear bracket 5 holds the other end side of the rotating shaft 11 via the bearing 8 and covers the rear side, which is the other side of the rotor 2 and the stator 3 . The front bracket 4 and the rear bracket 5 are axially spaced apart and connected by bolts 5a.

The rotating shaft 11 has a pulley 12 at one end of the rotating shaft 11 protruding from the through hole of the front bracket 4 . The pulley 12 gives and receives torque bi-directionally between the rotor 2 and an external internal combustion engine (not shown). The pulley 12 and the internal combustion engine are connected via a belt (not shown). The rotating shaft 11 has a slip ring 13 on the other end side of the rotating shaft 11 protruding from the through hole of the rear bracket 5 . The slip ring 13 and the field winding 2a are electrically connected, and a field current is supplied from the slip ring 13 to the field winding 2a. The brush 16 slides on the slip ring 13 and supplies current to the field winding 2a. The brush 16 is held by a brush holder 16a so as to be movable in the direction of the slip ring 13. As shown in FIG. The brush holder 16a is arranged in a space through which the rotating shaft 11 provided in the center of the inverter assembly 30 penetrates after the inverter assembly 30 before the cover 15 is attached is mounted on the driving portion 29 . Brush holder 16 a is fixed to inverter assembly 30 .

A fan 20 is fixed to the front end surface of the field core 2 b of the rotor 2 . A fan 21 is fixed to the rear end face of the field core 2 b of the rotor 2 . Fans 20 and 21 rotate integrally with rotor 2 . Cooling air is generated as the fans 20 and 21 rotate to cool the inside of the bracket. Between the heat sink 28 of the inverter assembly 30 and the rear bracket 5 , a gap portion serving as a cooling gas passage 23 is provided, and the cooling air passes through the cooling gas passage 23 to cool the heat sink 28 .

The magnetic pole position detection sensor 6 is composed of a sensor stator 6a and a sensor rotor 6b. The rotary shaft 11 has a sensor rotor 6b between the slip ring 13 and the bearing 8 on the other end side of the rotary shaft 11 protruding from the rear bracket 5 . The sensor rotor 6b rotates integrally with the rotating shaft 11 and is formed of an iron core. The sensor stator 6 a is arranged coaxially with the sensor rotor 6 b and is provided on the rear bracket 5 . The magnetic pole position detection sensor 6 detects the magnetic pole position of the rotating shaft 11, that is, the rotor 2 from the position of the sensor rotor 6b.

<Inverter assembly 30>
The inverter assembly 30 includes the power module 9 and the field module 10 that supply power to the drive unit 29, the control module 17 that controls the power module 9 and the field module 10, and the power module 9 and the field module 10 that are cooled. A heat sink 28, a high potential side connecting member 14a to which a module high potential side terminal (not shown) of the power module 9 is connected, a case 14 to which the high potential side connecting member 14a is fixed, and a high potential side terminal 19a. A filter unit 19 electrically connected to the high potential side connection member 14a and having a low potential side terminal 19b electrically connected to the heat sink 28, and a cover 15 covering these members from the rear side and the radially outer side. . FIG. 1 is a diagram showing connection points between the low potential side terminal 19b and the heat sink 28, and FIG. 2 is a diagram showing connection points between the high potential side terminal 19a and the high potential side connection member 14a. A plurality of power modules 9 are provided. When the stator winding 3a is a set of three-phase windings, the inverter assembly 30 has, for example, three power modules 9, but the number of power modules 9 is not limited to this.

After the inverter assembly 30 is assembled, the inverter assembly 30 is arranged on the other side of the rear bracket 5 in the axial direction, and is attached to the boss 5b and screws (not shown) provided on the rear side of the rear bracket 5 to which the connecting board 18 is attached. fixed. The connecting board 18 is a member having a terminal 18a that connects a terminal 14c, which will be described later, and the stator lead wire 3c. Since FIG. 1 is a cross-sectional view, only a portion of the terminal 18a is shown. Cover 15 is attached to case 14 with screws (not shown) after inverter assembly 30 is fixed to rear bracket 5 . The cover 15 incorporates each member of the inverter assembly 30, protects the inverter assembly 30 from exposure to water such as salt muddy water, and insulates the inverter assembly 30 from members around the engine.

Members constituting inverter assembly 30 will be described. The power module 9 includes switching elements and peripheral circuits. The switching element is arranged on a lead frame that forms electrical wiring, and is sealed together with a peripheral circuit with a resin material. An AC terminal 9a, a module high-potential side terminal, a module low-potential side terminal 9b, and a control terminal 9c provided in the power module 9 are exposed from the resin material. AC terminal 9a is connected to stator lead wire 3c via terminal 14c. A terminal 14 c is a terminal for electrically connecting the power module 9 and the driving section 29 and is provided on the case 14 . The stator lead wire 3c is the end of the stator winding 3a. A module high potential side terminal is connected to an external DC power supply via a high potential side connecting member 14a. The module low potential side terminal 9b and the heat sink 28 are electrically connected as shown in FIG. 3, and the heat sink 28 is grounded. The module low potential side terminal 9b and the heat sink 28 are connected by screws (not shown), for example. The switching element turns on and off the current supplied from the DC power supply to the stator winding 3a during driving to supply the stator current to the stator winding 3a. The switching element rectifies the stator current during power generation. The power module 9 is arranged on the surface on the other side in the axial direction of the heat sink 28 and is thermally connected to the heat sink 28 .

The field module 10 includes switching elements and peripheral circuits. The switching element is arranged on a lead frame that forms electrical wiring, and is sealed together with a peripheral circuit with a resin material. An output terminal, a ground terminal, a power terminal, and a control terminal 10a included in the field module 10 are exposed from the resin material. The output terminal is connected to the field winding 2a through the brush 16 and the slip ring 13. FIG. A ground terminal is electrically connected to the heat sink 28 . The power supply terminal is connected to an external DC power supply through the high potential side connection member 14a. The switching element controls the field current by turning on and off the current supplied to the field winding 2a. The field module 10 is arranged on the other side of the heat sink 28 in the axial direction and is thermally connected to the heat sink 28 .

The control module 17 comprises control circuitry for controlling the power module 9 and the field module 10 . The control module 17 is provided by, for example, a board on which electronic components are mounted. The control module 17 is arranged on the other side in the axial direction of the power module 9 and the field module 10 with a space therebetween. A control terminal 9 c of the power module 9 and a control terminal 10 a of the field module 10 are connected to the control module 17 . Signal wiring of the sensor stator 6 a of the magnetic pole position detection sensor 6 is connected to the control module 17 . Connections between the control module 17 and the outside are made through signal terminal connectors (not shown). The control module 17 has a plurality of through-holes penetrating in the axial direction. FIG. 3 shows a first through hole 17a and a second through hole 17b as through holes. Intermediate connection members, which will be described later, are arranged in these through holes.

The heat sink 28 is made of a metallic material such as aluminum. The power module 9 and the field module 10 are thermally connected to the heat sink 28 on the other side in the axial direction. A flow path for cooling the power module 9 and the field module 10 with a coolant may be provided in the heat sink 28 .

The high potential side connection member 14a is arranged between the control module 17 and the heat sink 28, as shown in FIG. The high-potential-side connection member 14a is made of, for example, copper, which has high electrical conductivity. The high potential side connection member 14 a is included in the case 14 . The connection between the high-potential side connecting member 14a and an external power supply is performed via a battery connection terminal (not shown) provided on the case 14. As shown in FIG. The high potential side connection member 14a and the heat sink 28 have different potentials.

The case 14 covers at least a portion of one side of the control module 17 in the axial direction, as shown in FIG. The case 14 surrounds the power module 9, the field module 10, and the control module 17 from the outside in the radial direction, as shown in FIG. The case 14 is made of an insulating resin material. The resin material is, for example, polyphenylene sulfide. The case 14 is electrically connected to the power module 9 at the other end, and has a terminal 14c protruding from the case 14 at one end. The high potential side connection member 14a and the terminal 14c are provided integrally with the case 14 by insert molding.

<Filter unit 19>
The filter unit 19 is arranged on the other axial side of the control module 17, as shown in FIG. The filter unit 19 has a high potential side terminal 19 a, a low potential side terminal 19 b, and a filter member 24 . The filter member 24 has a filter function and is electrically connected to the high potential side terminal 19a and the low potential side terminal 19b. Filter member 24 absorbs voltage fluctuations and current ripples. The filter member 24 has the effect of canceling noise. The filter member 24 is, for example, a capacitor, but the filter member 24 is not limited to a capacitor. A filter function may be configured by combining a capacitor and other electric components, or a filter function may be configured by a coil or the like without using a capacitor.

The high potential side terminal 19a is electrically connected to the high potential side connecting member 14a via a first intermediate connecting member 25a disposed through the first through hole 17a. The low-potential side terminal 19b is connected to the heat sink 28 via a second intermediate connection member 25b arranged to penetrate the second through hole 17b. The first intermediate connection member 25a and the second intermediate connection member 25b are made of, for example, copper, which has high electrical conductivity, in a cylindrical shape. The application of the current ripple to the filter member 24 causes the filter member 24 to generate heat and raise its temperature. Since the filter member 24 is thermally connected to the heat sink 28, the temperature rise of the filter member 24 is suppressed. When the filter member 24 is a capacitor, a plurality of capacitors may be provided in consideration of the amount of current ripple.

By configuring in this way, there is no need for an accommodation area for accommodating the filter unit 19 having the filter member 24 such as a capacitor in the gap between the power modules 9, and the gap between the power modules 9 can be expanded. Since it is not necessary, it is possible to obtain the controller-integrated rotating electrical machine 1 that includes the inverter assembly 30 that suppresses an increase in size in the radial direction.

Details of connection of the filter unit 19 will be described. As shown in FIG. 3, a high-potential-side through hole 40a is provided that axially penetrates the high-potential-side terminal 19a, the first intermediate connecting member 25a, and the high-potential-side connecting member 14a. A first screw 41a is inserted into the through hole 40a on the high-potential side from the other side in the axial direction, and a nut 42 is screwed onto the projection of the first screw 41a on the other side in the axial direction. be done. Sandwiched between the first screw 41a and the nut 42, the high potential side terminal 19a, the first intermediate connecting member 25a, and the high potential side connecting member 14a are electrically connected. By configuring in this way, the high-potential side terminal 19a and the high-potential side connection member 14a can be easily electrically and mechanically connected, and the reliability of the connection can be improved. Further, since the high-potential side terminal 19a and the high-potential side connection member 14a can be easily connected, the productivity of the controller-integrated rotating electric machine 1 can be improved.

A low-potential-side through hole 40b is provided that axially penetrates the low-potential-side terminal 19b and the second intermediate connection member 25b. The heat sink 28 has a screw hole 28a opening on the other side in the axial direction. A second screw 41b is inserted into the through hole 40b on the low potential side from the other side in the axial direction and screwed into the screw hole 28a. The low potential side terminal 19b and the second intermediate connection member 25b are electrically connected by being sandwiched between the second screw 41b and the portion of the heat sink 28 in which the screw hole 28a is formed, and the filter unit 19 is fixed to the heat sink 28. It is By configuring in this way, the low potential side terminal 19b and the heat sink 28 can be easily electrically and mechanically connected, and the reliability of the connection can be improved. In addition, since the low potential side terminal 19b and the heat sink 28 can be easily connected, the productivity of the controller-integrated dynamoelectric machine 1 can be improved.

Connection between the module low potential side terminal 9b and the heat sink 28, which is different from that in FIG. 3, will be described with reference to FIG. The module low-potential side terminal 9 b is provided so as to protrude from the main body of the power module 9 . The module low-potential side terminal 9b is sandwiched between the second intermediate connection member 25b and the heat sink 28 and electrically connected to the second intermediate connection member 25b and the heat sink 28, and the low-potential side terminal 9b through which the second screw 41b penetrates. is provided with a through hole 40b. By configuring in this way, the power module 9 and the second intermediate connection member 25b can be brought closer to each other, so that the controller-integrated rotating electric machine 1 including the inverter assembly 30 which further suppresses the increase in size in the radial direction. can be obtained. Moreover, the low potential side terminal 19b, the module low potential side terminal 9b, and the heat sink 28 can be easily electrically and mechanically connected, and the reliability of the connection can be improved. In addition, since the low potential side terminal 19b, the module low potential side terminal 9b, and the heat sink 28 can be easily connected, the productivity of the controller-integrated dynamoelectric machine 1 can be further improved. Moreover, since the wiring distance between the power module 9 and the filter member 24 is shortened, the wiring can be made to have a low inductance. In this embodiment, the module low potential side terminal 9b is directly connected to the heat sink 28 in both cases of FIGS.

<Small Unit 22 of Filter Unit 19>
Details of the configuration of the filter unit 19 will be described with reference to FIGS. 5 to 9. FIG. The filter unit 19 includes a plurality of small units 22 each having a high potential side terminal 19 a, a low potential side terminal 19 b, and a filter member 24 . The filter unit 19 is configured by integrally molding a plurality of small units 22 . In this embodiment, the filter unit 19 is integrally molded with an insulating member 19c made of mold resin, and the filter unit 19 includes three small units 22 as shown in FIG. Small units 22 are provided in proportion to the number of power modules 9 .

By configuring in this way, the filter unit 19 can be handled as one unit by integrally molding a plurality of small units 22, so that the size of the filter unit 19 can be easily stabilized. Manufacturing costs associated with manufacturing inspection can be reduced. In the case of separate parts, there is a gap for assembling the parts, but by integrating the parts, the gap can be minimized, so that the manufacturing cost can be reduced and the size of the parts can be reduced. .

In each of the small units 22, the high potential side terminal 19a is provided on the plate-shaped high potential side electrode plate 22a, and the low potential side terminal 19b is provided on the plate-shaped low potential side electrode plate 22b. . The plurality of high-potential side terminals 19a and the plurality of low-potential side terminals 19b are connected to the high-potential side electrode plate 22a or the low-potential side electrode plate 22b via the bent portions 19b1, and are flexible terminals that bend in the axial direction, or It is a fixed terminal integrally formed with the high potential side electrode plate 22a or the low potential side electrode plate 22b. In this embodiment, the high potential side terminal 19a is provided as a fixed terminal, and the low potential side terminal 19b is provided as a flexible terminal. The configuration of the fixed terminals and flexible terminals is not limited to this.

The filter unit 19 is separate from the case 14 and heat sink 28 . The filter unit 19 is fixed to the fixed side case 14 and heat sink 28 via the first intermediate connection member 25a and the second intermediate connection member 25b. Since the filter unit 19 is separate, it is necessary to adjust the axial dimension of the filter unit 19 and the fixing side when fixing the filter unit 19 . By providing a configuration in which the bent portion 19b1 is provided, the bent portion 19b1 can absorb axial dimensional variations between the filter unit 19 and the fixed side. Since dimensional adjustment becomes unnecessary, the productivity of the controller-integrated rotating electric machine 1 can be improved. Also, the reliability of mechanical and electrical connection between the filter unit 19 and the fixed side can be improved.

The filter unit 19 has at least three fixed terminals. The high-potential side terminal 19a or the low-potential side terminal 19b other than the fixed terminal is a flexible terminal. In this embodiment, the three high potential side terminals 19a are fixed terminals, and the other low potential side terminals 19b are flexible terminals.

When fixing the filter unit 19, the axial position of the filter unit 19 is determined by supporting the filter unit 19 at three points. By adopting a configuration including at least three fixed terminals, the position of the filter unit 19 in the axial direction is determined by the fixed terminals provided at three locations, and the flexible terminals are fixed following the determined position of the filter unit 19. Therefore, the axial position of the filter unit 19 can be stabilized. Also, the reliability of mechanical and electrical connection between the filter unit 19 and the fixed side can be improved. In addition, an additional member for adjusting the axial position of the filter unit 19 is not required, the number of parts can be reduced, and the first intermediate connection member 25a and the second intermediate connection member 25b can be used as a common member. Therefore, it is possible to obtain the controller-integrated rotating electrical machine 1 with low cost and improved productivity.

In each of the small units 22, the high potential side terminal 19a and the low potential side terminal 19b are arranged adjacent to each other. As shown in FIG. 7, the high potential side terminal 19a and the low potential side terminal 19b are arranged side by side. By configuring in this way, the noise canceling effect of the filter member 24 can be improved.

In each of the small units 22, as shown in FIG. 9, a high potential side electrode plate 22a and a low potential side electrode plate 22b are laminated in the axial direction with an insulating material 22c interposed therebetween. The high potential side terminal 19a and the low potential side terminal 19b are exposed on one side in the axial direction and the other side in the axial direction. The noise canceling effect in the small unit 22 increases as the distance between the high potential side electrode plate 22a and the low potential side electrode plate 22b, which respectively have the high potential side terminal 19a and the low potential side terminal 19b, is shorter. On the other hand, there is a trade-off that the closer the distance, the worse the insulation. Therefore, by interposing an insulating member 19c such as a sheet material or resin between the high-potential electrode plate 22a and the low-potential electrode plate 22b, the gap between the high-potential electrode plate 22a and the low-potential electrode plate 22b is reduced. can be brought closer together.

A suitable distance between the high potential side electrode plate 22a and the low potential side electrode plate 22b is about 0.3 mm to 3 mm. When the distance is short, a sheet material or silicone having excellent insulating properties is suitable for the material of the insulating member 19c. If the distance is about 3 mm, a resin member or epoxy is suitable. With this configuration, the distance between the high-potential electrode plate 22a and the low-potential electrode plate 22b can be stably reduced, so that the high-potential electrode plate 22a and the low-potential electrode plate 22b are separated from each other. The noise canceling effect in the small unit 22 can be enhanced while enhancing the insulation between the .

The high-potential-side electrode plate 22a has a high-potential connecting portion 22a1 that protrudes outward from the laminated portion. The low-potential-side electrode plate 22b has a low-potential connecting portion 22b1 that protrudes outward from the laminated portion. As shown in FIG. 6, the high potential connection portion 22a1 and the low potential connection portion 22b1 are exposed on one side of the filter unit 19 in the axial direction. As shown in FIG. 9, the filter member 24 has a high potential side filter terminal 24a and a low potential side filter terminal 24b. The high-potential filter terminal 24a passes through the high-potential connecting portion 22a1 on one side in the axial direction, and the terminal protruding portion protruding from the high-potential connecting portion 22a1 on the one axial side is soldered to the high-potential connecting portion 22a1. It is connected to the surface on one side in the axial direction. The low-potential-side filter terminal 24b penetrates the low-potential connecting portion 22b1 on one side in the axial direction, and the terminal protruding portion protruding from the low-potential connecting portion 22b1 on the one axial side is soldered to the low-potential connecting portion 22b1. It is connected to the surface on one side in the axial direction.

With this configuration, a plurality of filter members 24 can be arranged surrounding the high-potential terminal 19a and the low-potential terminal 19b, so that the small unit 22 can be miniaturized. Since the small unit 22 is miniaturized, the filter unit 19 can be miniaturized. In addition, since the filter member 24 can be connected to the high potential side electrode plate 22a and the low potential side electrode plate 22b from one side, the productivity of the controller-integrated rotating electric machine 1 can be improved. In this embodiment, five filter members 24 are provided in one small unit 22, but the number of filter members 24 is not limited to this.

The filter unit 19 is integrally molded with molded resin, and one axial surface of the high-potential connecting portion 22a1 and the low-potential connecting portion 22b1 is exposed outside from the molded resin. With this configuration, after the filter unit 19 is integrally formed, the filter members 24 can be collectively connected to the high-potential side electrode plate 22a and the low-potential side electrode plate 22b by soldering. 1 productivity can be improved.

As shown in FIG. 6, a wall 36 made of mold resin is arranged around the terminal projecting portion of the high-potential filter terminal 24a and the terminal projecting portion of the low-potential filter terminal 24b. The distance between the center of the terminal protrusion of the high-potential filter terminal 24a and the wall 36 and the distance between the center of the terminal protrusion of the low-potential filter terminal 24b and the wall 36 are 1.5 mm or more. . When connecting a plurality of terminal projecting portions by soldering, a jet soldering facility is mainly used to connect a plurality of portions in the same operation. The diameter of the nozzle for soldering in the jet soldering equipment is about 3 mm. A space with a diameter of 3 mm or more is required from the center of the terminal protrusion in order to allow the nozzle to approach the terminal protrusion. Therefore, the distance between the center of the terminal projecting portion and the wall 36 is set to 1.5 mm or more.

With this configuration, the nozzle of the equipment does not interfere with members around the terminal projecting portion when jet soldering is performed, so the nozzle can be brought closer to the terminal projecting portion. Since the nozzle is close to the terminal protrusion, the reliability of the solder connection at the terminal protrusion can be improved. In addition, since the wall 36 forms a step, contact between the terminal projecting portion and an external component is suppressed, and damage to the terminal projecting portion is suppressed, so that the reliability of the filter unit 19 can be improved. .

As shown in FIG. 6, the filter unit 19 has a fitting portion 19d recessed on the other side in the axial direction on one side in the axial direction. The fitting portion 19d is formed in the insulating member 19c. The fitting portion 19d is formed at the same time when the plurality of small units 22 are integrally molded. The first intermediate connection member 25a and the second intermediate connection member 25b are provided by being fitted into the fitting portion 19d. Each of the fitting portions 19d has at least three projecting portions 31 projecting inward and extending in the axial direction on the inner peripheral surface. When the first intermediate connection member 25a and the second intermediate connection member 25b are fitted to the fitting portion 19d, the first intermediate connection member 25a and the second intermediate connection member 25b are fitted so that the protrusion 31 made of the mold resin is scraped off. It is pushed into the joining portion 19d.

With this configuration, the positional accuracy of the first intermediate connection member 25a and the second intermediate connection member 25b with respect to the filter unit 19 can be stabilized. In addition, the first intermediate connection member 25a and the second intermediate connection member 25b can be stably fixed to the filter unit 19. As shown in FIG.

As shown in FIG. 6, the corner portion 37 on the outer peripheral portion of the filter unit 19 is a curved surface of at least R2 or more. After the filter unit 19 is fixed to the case 14 and the heat sink 28, a sealing member 38, which is an insulating material such as epoxy, is introduced into the inside of the case 14. As shown in FIG. A part of the filter unit 19 is buried by the sealing member 38 . The filter unit 19 is mainly made of mold resin, and is often made of a material different from that of the sealing member 38 such as epoxy. When the internal temperature of the inverter assembly 30 changes significantly in a heat cycle test or the like, the corners 37 are prone to stress concentration due to differences in linear expansion between different materials. Therefore, the interface between different materials has poor adhesion, and defects such as cracks are likely to occur at the interface.

By forming the corner portion 37 into a curved surface of at least R2 or more, stress concentration at the corner portion 37 can be alleviated. Since the stress concentration at the corners 37 is alleviated, peeling due to the difference in linear expansion between the mold resin and the sealing member 38 at the interface between the molding resin and the sealing member 38 on the outer periphery of the filter unit 19 can be suppressed.

As described above, in the controller-integrated dynamoelectric machine 1 according to Embodiment 1, the filter unit 19 is arranged on the other side of the control module 17 in the axial direction, and the control module 17 has a plurality of through holes penetrating in the axial direction. The high potential side terminal 19a is electrically connected to the high potential side connecting member 14a via the first intermediate connecting member 25a disposed through the first through hole 17a, and the low potential side terminal 19b is electrically connected to the first intermediate connecting member 25a. A filter unit 19 having a filter member 24 such as a capacitor in the gap between the power modules 9 because it is connected to the heat sink 28 via the second intermediate connection member 25b arranged through the second through hole 17b. , and there is no need to enlarge the gap between the power modules 9. Therefore, the controller-integrated rotating electric machine 1 equipped with the inverter assembly 30 that suppresses the increase in size in the radial direction is provided. Obtainable.

A high-potential-side through hole 40a is provided to axially penetrate the high-potential-side terminal 19a, the first intermediate connection member 25a, and the high-potential-side connection member 14a. A first screw 41a inserted on one side from the first screw 41a and a nut 42 screwed on the screw projection on the other side in the axial direction of the first screw 41a are provided, and the first screw 41a and the nut 42 are sandwiched between , the high potential side terminal 19a, the first intermediate connection member 25a, and the high potential side connection member 14a are electrically connected, the high potential side terminal 19a and the high potential side connection member 14a can be easily electrically and It is possible to mechanically connect and improve the reliability of the connection.

A low-potential-side through hole 40b axially penetrates the low-potential-side terminal 19b and the second intermediate connection member 25b. A second screw 41b is inserted into the through hole 40b on the side from the other side in the axial direction and screwed into the screw hole 28a. When the filter unit 19 is fixed to the heat sink 28, the low potential side terminal 19b and the heat sink 28 are easily connected to each other. Electrical and mechanical connection can be achieved, and connection reliability can be enhanced.

A module low-potential side terminal 9b is provided so as to protrude from the main body of the power module 9, and the module low-potential side terminal 9b is sandwiched between the second intermediate connection member 25b and the heat sink 28, and is connected to the second intermediate connection member 25b. When the through hole 40b on the low potential side, which is electrically connected to the heat sink 28 and through which the second screw 41b penetrates, is provided, the power module 9 and the second intermediate connection member 25b can be brought closer to each other. It is possible to obtain the controller-integrated dynamoelectric machine 1 including the inverter assembly 30 that suppresses an increase in size in the radial direction.

The filter unit 19 includes a plurality of small units 22 each having a high potential side terminal 19a, a low potential side terminal 19b, and a filter member 24, and the filter unit 19 is constructed by integrally molding the plurality of small units 22. In this case, since the filter unit 19 can be handled as one unit by integrally molding a plurality of small units 22, the size of the filter unit 19 can be easily stabilized, and the manufacturing inspection of the filter unit 19 can be facilitated. Manufacturing costs can be reduced.

In each of the small units 22, when the high potential side terminal 19a and the low potential side terminal 19b are arranged adjacent to each other, the noise canceling effect of the filter member 24 can be improved.

In each of the small units 22, the high potential side terminal 19a is provided on the plate-shaped high potential side electrode plate 22a, and the low potential side terminal 19b is provided on the plate-shaped low potential side electrode plate 22b. a flexible terminal in which a plurality of high-potential side terminals 19a and a plurality of low-potential side terminals 19b are connected to the high-potential side electrode plate 22a or the low-potential side electrode plate 22b via the bent portion 19b1, and which bends in the axial direction; In the case of a fixed terminal integrally formed with the high-potential side electrode plate 22a or the low-potential side electrode plate 22b, the bent portion 19b1 can absorb axial dimensional variations between the filter unit 19 and the fixed side. This eliminates the need for axial dimensional adjustment between the filter unit 19 and the fixed side, thereby improving the productivity of the controller-integrated dynamoelectric machine 1 .

When the filter unit 19 has at least three fixed terminals, the position of the filter unit 19 in the axial direction is determined by the fixed terminals provided at three locations, and the flexible terminals are fixed following the determined position of the filter unit 19. Therefore, the axial position of the filter unit 19 can be stabilized.

In each of the small units 22, a high potential side electrode plate 22a and a low potential side electrode plate 22b are laminated in the axial direction via an insulating material 22c, and a high potential side terminal 19a and a low potential side terminal 19b are arranged in one axial direction. side and the other side in the axial direction, the distance between the high-potential side electrode plate 22a and the low-potential side electrode plate 22b can be stably made close. The noise canceling effect in the small unit 22 can be enhanced while increasing the insulation from the low potential side electrode plate 22b.

The filter member 24 has a high potential side filter terminal 24a and a low potential side filter terminal 24b. A terminal projecting portion projecting to one side in the axial direction is connected to the surface of the high potential connection portion 22a1 on one side in the axial direction by soldering, and the low potential side filter terminal 24b connects the low potential connection portion 22b1 to the one side in the axial direction. When the terminal protruding portion that penetrates and protrudes from the low potential connection portion 22b1 to one axial side is connected to the one axial surface of the low potential connection portion 22b1 by soldering, the high potential side terminal 19a and the low potential side terminal 19a Since the filter member 24 can be arranged so as to surround the side terminal 19b, the small unit 22 can be miniaturized.

When the filter unit 19 is integrally molded with molded resin, and one axial surface of the high-potential connecting portion 22a1 and the low-potential connecting portion 22b1 is exposed outside from the molded resin, the filter unit 19 is integrally molded. Since the filter members 24 can be connected to the high-potential side electrode plate 22a and the low-potential side electrode plate 22b together later by soldering, the productivity of the controller-integrated rotating electric machine 1 can be improved.

A wall 36 formed of mold resin is arranged around the terminal projecting portion of the high potential side filter terminal 24a and the terminal projecting portion of the low potential side filter terminal 24b, and the center of the terminal projecting portion of the high potential side filter terminal 24a is arranged. and the wall 36, and the distance between the center of the terminal protrusion of the low potential side filter terminal 24b and the wall 36 is 1.5 mm or more, the nozzle of the equipment when performing jet soldering does not interfere with members around the terminal projection, the nozzle can be brought closer to the terminal projection, and the reliability of the solder connection at the terminal projection can be improved.

The filter unit 19 has a fitting portion 19d recessed on the other side in the axial direction on one surface in the axial direction, and the first intermediate connecting member 25a and the second intermediate connecting member 25b are fitted in the fitting portion 19d. When each of the fitting portions 19d provided has at least three protrusions 31 protruding inward and extending in the axial direction on the inner peripheral surface, the first intermediate connecting member 25a and the second intermediate connecting member 25a and the second intermediate connecting member 25a The positional accuracy of the intermediate connection member 25b with respect to the filter unit 19 can be stabilized.

When the corners 37 on the outer periphery of the filter unit 19 are curved surfaces of at least R2 or more, stress concentration at the corners 37 can be alleviated. separation due to the difference in linear expansion between the molding resin and the sealing member 38 at the interface between the mold resin and the sealing member 38 can be suppressed.

Embodiment 2.
A controller-integrated dynamoelectric machine 1 according to Embodiment 2 will be described. FIG. 10 is a cross-sectional view showing a main part of the controller-integrated rotating electric machine 1 according to Embodiment 2, and shows a connecting portion of the filter unit 19. As shown in FIG. The controller-integrated dynamoelectric machine 1 according to the second embodiment is configured such that the module low potential side terminal 9b and the heat sink 28 are indirectly connected.

The inverter assembly 30 is sandwiched between the second intermediate connection member 25b and the heat sink 28, is electrically connected to the second intermediate connection member 25b and the heat sink 28, and has a through hole on the low potential side through which the second screw 41b passes. A hole 40b is provided, and a low-potential-side connection member 14b extending along the surface of the heat sink 28 on the other side in the axial direction is provided. The power module 9 has a module low potential side terminal 9b protruding from the main body of the power module 9 . The module low-potential side terminal 9b is electrically connected to the low-potential side connection member 14b, and is also electrically connected to the low-potential side terminal 19b and the heat sink 28. As shown in FIG.

Before the filter unit 19 is fixed to the heat sink 28, the module low potential side terminal 9b and the heat sink 28 are separated, and the low potential side connection member 14b and the heat sink 28 are also separated. The filter unit 19 is fixed to the heat sink 28 by the second screw 41b, and the module low-potential side terminal 9b and the low-potential side connection member 14b are electrically connected, whereby the module low-potential side terminal 9b and the low-potential side connection The member 14b and the heat sink 28 are electrically connected. The module low potential side terminal 9b and the low potential side connection member 14b are connected by welding, for example.

With this configuration, in a state in which the low potential side of the power module 9 is separated from the module low potential side terminal 9b and the heat sink 28 before the filter unit 19 is fixed to the heat sink 28, for example, the inverter assembly A high voltage test, which is an intermediate test during manufacture of 30, can be performed. In the high voltage test, a high voltage is applied to the high potential side connecting member 14a and the heat sink 28 to check the short circuit of the high potential side connecting member 14a and the short circuit of the power module 9 connected to the high potential side connecting member 14a. be able to.

As described above, in the controller-integrated dynamoelectric machine 1 according to Embodiment 2, the inverter assembly 30 is sandwiched between the second intermediate connection member 25b and the heat sink 28, and is sandwiched between the second intermediate connection member 25b and the heat sink 28. It has a low potential side connection member 14b that is electrically connected and extends along the other axial surface of the heat sink 28, and the module low potential side terminal 9b is electrically connected to the low potential side connection member 14b. is electrically connected to the low potential side terminal 19b and the heat sink 28, the high potential side of the power module 9 is open before the filter unit 19 is fixed to the heat sink 28. Since short-circuiting of the connection member 14a and the power module 9 can be confirmed, an electrically highly reliable inverter assembly 30 can be manufactured.

Embodiment 3.
A controller-integrated dynamoelectric machine 1 according to Embodiment 3 will be described. FIG. 11 is a perspective view showing a main portion of the case 14 of the controller-integrated dynamoelectric machine 1 according to Embodiment 3, and shows a portion to which the filter unit 19 is connected. The controller-integrated dynamoelectric machine 1 according to the third embodiment has a configuration different from that of the first embodiment in the configuration of the portion of the case 14 connected to the filter unit 19 .

The case 14 has a case protruding portion 32 protruding to the other side in the axial direction at a position along a part of the periphery of the first intermediate connection member 25a on the other side in the axial direction. The case 14 has at least two case protrusions 32 . In this embodiment, there are three case projecting portions 32 corresponding to the three first intermediate connecting members 25a respectively.

The filter unit 19 is fixed to the case 14 with the first intermediate connection member 25a and the second intermediate connection member 25b fitted in the fitting portion 19d. The case projecting portion 32 is a portion used for positioning when the filter unit 19 is fixed to the case 14 . The filter unit 19 is arranged in the case 14 with the first intermediate connection member 25a along the case projecting portion 32, and the filter unit 19 is fixed to the case 14 with the first screw 41a. Although three case protrusions 32 are provided in the present embodiment, at least two case protrusions 32 are sufficient. With two case protrusions 32, the position of the filter unit 19 with respect to the case 14 can be determined. In FIG. 11, when two case protrusions 32 are provided, it is desirable to provide two case protrusions 32 indicated by arrows. This is because assemblability of the filter unit 19 is stabilized when the positioning reference is separated as much as possible.

As described above, in the controller-integrated dynamoelectric machine 1 according to Embodiment 3, the case 14 is axially positioned along a portion of the circumference of the first intermediate connection member 25a on the other side surface in the axial direction. Since the case projecting portion 32 protrudes to the other side, when the filter unit 19 is incorporated into the case 14, the first intermediate connection member 25a is arranged in the case 14 along the case projecting portion 32. rotation of the filter unit 19 can be suppressed. Since the rotation of the filter unit 19 during assembly is suppressed, the accuracy of the positional relationship between the filter unit 19 and the case 14 can be stabilized. Since the accuracy of the positional relationship between the filter unit 19 and the case 14 is stabilized, the inverter assembly 30 with stable mechanical accuracy can be manufactured.

Embodiment 4.
A controller-integrated dynamoelectric machine 1 according to Embodiment 4 will be described. FIG. 12 is a perspective view showing a main part of the filter unit 19 of the controller-integrated rotating electrical machine 1 according to Embodiment 4, and shows a part on the other side in the axial direction of the filter unit 19. As shown in FIG. The controller-integrated dynamoelectric machine 1 according to the fourth embodiment has a configuration in which the filter unit 19 is provided with the insulating wall 34 .

The filter unit 19 includes an insulating wall 34 between the high potential side terminal 19a and the low potential side terminal 19b, which protrudes to the other side in the axial direction beyond the high potential side terminal 19a and the low potential side terminal 19b. Since the high-potential side terminal 19a and the low-potential side terminal 19b are terminals with different potentials, when the high-potential side terminal 19a and the low-potential side terminal 19b are exposed to water, an electrolytic corrosion reaction occurs if the creepage distance is short. When the electrolytic corrosion reaction occurs, the electrical reliability of the inverter assembly 30 is degraded. By providing the insulating wall 34 between the high potential side terminal 19a and the low potential side terminal 19b, the creepage distance between the high potential side terminal 19a and the low potential side terminal 19b can be increased.

In this embodiment, since the high potential side terminal 19a and the low potential side terminal 19b are arranged adjacent to each other, one insulating wall 34 is provided between the high potential side terminal 19a and the low potential side terminal 19b. However, the arrangement of the insulating wall 34 is not limited to this. If the high potential side terminal 19a and the low potential side terminal 19b are not adjacent to each other, the insulating wall 34 may be provided adjacent to each of the high potential side terminal 19a and the low potential side terminal 19b. The insulating wall 34 may be provided only at the position. When the insulating wall 34 is provided at a position adjacent to either one, it is desirable to provide the insulating wall 34 at a position adjacent to the high potential side terminal 19a. Since the high-potential side terminal 19a has a high potential, it is effective in suppressing the electrolytic corrosion reaction.

As described above, in the controller-integrated rotating electric machine 1 according to Embodiment 4, the filter unit 19 is arranged between the high potential side terminal 19a and the low potential side terminal 19b between the high potential side terminal 19a and the low potential side terminal 19b. Since the insulating wall 34 protrudes toward the other side in the axial direction, the creeping distance between the high-potential side terminal 19a and the low-potential side terminal 19b can be lengthened. It is possible to suppress the electrolytic corrosion reaction between the potential side terminal 19a and the low potential side terminal 19b. Since the electrolytic corrosion reaction between the high-potential side terminal 19a and the low-potential side terminal 19b is suppressed, the filter unit 19 with high electrical reliability can be constructed.

Embodiment 5.
A controller-integrated dynamoelectric machine 1 according to Embodiment 5 will be described. FIG. 13 is a perspective view of the filter unit of the controller-integrated dynamoelectric machine 1 according to Embodiment 5, showing the other axial side of the filter unit 19. FIG. 14 is a filter unit of the controller-integrated dynamoelectric machine 1. 19 is a perspective view of FIG. 19 with the filter cover 35 removed from FIG. 13; The controller-integrated dynamoelectric machine 1 according to Embodiment 5 has a configuration in which the filter unit 19 includes the filter cover 35 and the filter unit through hole 33 .

The filter unit 19 has a filter cover 35 that covers the plurality of filter members 24 from the other side in the axial direction. The filter cover 35 is provided to prevent the filter member 24 from being exposed to water from the outside. The filter cover 35 is fixed to the filter unit 19 by being adhered to the insulating member 19c of the filter unit 19 with an adhesive such as silicone.

When the silicone for bonding the filter cover 35 is thermosetting, the filter unit 19 is mainly placed in a curing oven to cure the adhesive. When the temperature rises, the internal air sealed by the filter unit 19 and the filter cover 35 thermally expands, and the bonding surfaces of the insulating member 19c and the filter cover 35 are likely to separate. Further, if the filter member 24 is, for example, a directional capacitor, the internal pressure of the capacitor increases when overvoltage or overcurrent is applied to the capacitor, and the explosion-proof valve provided in the capacitor is released, releasing the pressure. There are many capacitors with specifications that damage the capacitor after it has been applied. When this capacitor is used, gas is ejected when the pressure is released, and the internal pressure in the space covered with the filter cover 35 increases.

The filter unit 19 has a filter unit through-hole 33 extending axially through the portion covered with the filter cover 35 . The filter unit through-hole 33 is provided to release the internal pressure when the internal pressure in the space covered by the filter cover 35 increases when the filter cover 35 is adhered or when the filter member 24 is damaged. . Since the filter unit through-hole 33 communicates with one side of the filter unit 19 in the axial direction, the filter unit through-hole 33 is axially opened in order to prevent water from entering the filter unit 19 from the one axial side. The part on one side is provided with anti-flooding measures to suppress water exposure. As a measure to prevent water intrusion, for example, a water-repellent filter is provided on one side of the filter unit through-hole 33 in the axial direction.

As described above, in the controller-integrated dynamoelectric machine 1 according to Embodiment 5, the filter unit 19 has the filter cover 35 that covers the plurality of filter members 24 from the other side in the axial direction. Since the filter unit through-hole 33 is provided in the portion covered with the filter unit through-hole 33 that penetrates in the axial direction, peeling of the adhesive surface between the insulating member 19c of the filter unit 19 and the filter cover 35 can be suppressed. Since the peeling of the bonding surface between the insulating member 19c and the filter cover 35 is suppressed, the filter unit 19 with highly reliable bonding between the insulating member 19c and the filter cover 35 can be configured.

Also, while this application has described various exemplary embodiments and examples, various features, aspects, and functions described in one or more of the embodiments may vary from particular embodiment to specific embodiment. The embodiments are applicable singly or in various combinations without being limited to the application.
Accordingly, numerous variations not illustrated are envisioned within the scope of the technology disclosed herein. For example, modification, addition or omission of at least one component, extraction of at least one component, and combination with components of other embodiments shall be included.

1 controller-integrated rotary electric machine, 2 rotor, 2a field winding, 2b field core, 3 stator, 3a stator winding, 3b stator core, 3c stator lead wire, 4 front bracket, 5 rear Bracket 5a Bolt 5b Boss 6 Magnetic pole position detection sensor 6a Sensor stator 6b Sensor rotor 7 Bearing 8 Bearing 9 Power module 9a AC terminal 9b Module low potential side terminal 9c Control terminal 10 Field Module 11 Rotating shaft 12 Pulley 13 Slip ring 14 Case 14a High potential side connecting member 14b Low potential side connecting member 14c Terminal 15 Cover 16 Brush 16a Brush holder 17 Control module 17a First through hole, 17b second through hole, 18 connecting board, 18a terminal, 19 filter unit, 19a high potential side terminal, 19b low potential side terminal, 19b1 bent portion, 19c insulating member, 19d fitting portion, 20 fan, 21 fan, 22 small unit, 22a high potential side electrode plate, 22a1 high potential side electrode plate, 22b low potential side electrode plate, 22b1 low potential side connection portion, 22c insulating material, 23 cooling gas passage, 24 filter member, 24a high potential side Filter terminal 24b Low potential side filter terminal 25a First intermediate connection member 25b Second intermediate connection member 28 Heat sink 28a Screw hole 29 Drive unit 30 Inverter assembly 31 Projection 32 Case projection 33 Filter Unit through hole 34 Insulating wall 35 Filter cover 36 Wall 37 Corner 38 Sealing member 40a High potential side through hole 40b Low potential side through hole 41a First screw 41b Second screw 42 nut

Claims (18)

a rotating shaft; a rotor having a field core wound with a field winding and rotating integrally with the rotating shaft; and a bracket that covers the outside of the field core and the stator core and holds one end side and the other end side of the rotating shaft via bearings. Department and
a power module having a switching element that turns on and off a current supplied to the stator winding; a heat sink that cools the power module, the power module being thermally connected to the surface on the other side in the axial direction; A control module having a control circuit for controlling an element and arranged on the other side of the power module in the axial direction with a gap therebetween is connected to a module high potential side terminal of the power module, and the control module and the heat sink are connected to each other. a high-potential-side connecting member arranged between the high-potential-side connecting member, a case to which the high-potential-side connecting member is fixed and covering at least a part of one axial side of the control module, and a high-potential-side terminal connected to the high-potential-side terminal. a filter unit electrically connected to the potential side connection member and having a low potential side terminal electrically connected to the heat sink, disposed on the other side of the bracket in the axial direction and fixed to the bracket; an inverter assembly;
The filter unit is arranged on the other side in the axial direction of the control module,
The control module has a plurality of through-holes that penetrate in the axial direction,
the high-potential-side terminal is electrically connected to the high-potential-side connecting member via a first intermediate connecting member disposed through the first through-hole;
The controller-integrated dynamoelectric machine, wherein the low-potential side terminal is connected to the heat sink via a second intermediate connection member disposed through the second through-hole. a high-potential-side through hole axially penetrating the high-potential-side terminal, the first intermediate connecting member, and the high-potential-side connecting member;
a first screw inserted into the through hole on the high potential side from one side in the axial direction from the other side in the axial direction;
2. The control device according to claim 1, wherein said high-potential side terminal, said first intermediate connection member, and said high-potential side connection member are electrically connected by being sandwiched between said first screw and said nut. Body type rotating electric machine. a low-potential-side through-hole axially penetrating the low-potential-side terminal and the second intermediate connecting member;
The heat sink has a screw hole opening on the other side in the axial direction,
A second screw is inserted into the through hole on the low potential side from the other side in the axial direction to one side and is screwed into the screw hole,
The low potential side terminal and the second intermediate connecting member are electrically connected by being sandwiched between the second screw and the portion of the heat sink in which the screw hole is formed, and the filter unit is fixed to the heat sink. The controller-integrated rotating electrical machine according to claim 1 . The power module has a module low-potential side terminal projecting from a main body of the power module,
The module low potential side terminal is sandwiched between the second intermediate connection member and the heat sink and electrically connected to the second intermediate connection member and the heat sink, and the low potential through which the second screw penetrates. 4. The controller-integrated dynamoelectric machine according to claim 3, wherein a side through-hole is provided. The inverter assembly is sandwiched between the second intermediate connection member and the heat sink and electrically connected to the second intermediate connection member and the heat sink, and the low-potential-side penetration through which the second screw penetrates. a low-potential-side connection member provided with a hole and extending along the other side surface of the heat sink in the axial direction;
The power module has a module low-potential side terminal projecting from a main body of the power module,
4. The controller-integrated rotation unit according to claim 3, wherein the module low-potential side terminal is electrically connected to the low-potential side connection member and is also electrically connected to the low-potential side terminal and the heat sink. electric machine. The filter unit includes the high potential side terminal, the low potential side terminal, and a filter member having a filter function and electrically connected to the high potential side terminal and the low potential side terminal. Equipped with multiple small units,
The controller-integrated dynamoelectric machine according to any one of claims 2 to 5, wherein the filter unit is configured by integrally molding a plurality of the small units. 7. The controller-integrated dynamoelectric machine according to claim 6, wherein in each of said small units, said high potential side terminal and said low potential side terminal are arranged adjacent to each other. In each of the small units, the high potential side terminal is provided on a plate-shaped high potential side electrode plate,
In each of the small units, the low potential side terminal is provided on a plate-shaped low potential side electrode plate,
The plurality of high-potential side terminals and the plurality of low-potential side terminals are connected to the high-potential side electrode plate or the low-potential side electrode plate via bending portions, and are flexible terminals that bend in the axial direction, or 7. The controller-integrated dynamoelectric machine according to claim 6, which is a fixed terminal formed integrally with the high-potential side electrode plate or the low-potential side electrode plate. The controller-integrated dynamoelectric machine according to claim 8, wherein the filter unit includes at least three fixed terminals. In each of the small units, the high-potential-side electrode plate and the low-potential-side electrode plate are laminated in the axial direction via an insulating material, and the high-potential-side terminal and the low-potential-side terminal 10. The controller-integrated dynamoelectric machine according to claim 8 or 9, which is exposed on the other side in the axial direction. The high-potential-side electrode plate has a high-potential connecting portion protruding from the laminated portion to the surroundings,
The low-potential-side electrode plate has a low-potential connection portion protruding from the laminated portion to the surroundings,
the high-potential connecting portion and the low-potential connecting portion are exposed on one side of the filter unit in the axial direction,
The filter member has a high potential side filter terminal and a low potential side filter terminal,
The high-potential-side filter terminal penetrates the high-potential connecting portion in one axial direction, and the terminal protruding portion protruding from the high-potential connecting portion in the one axial direction is soldered to the high-potential connecting portion. connected to one axial face,
The low-potential-side filter terminal penetrates the low-potential connecting portion to one side in the axial direction, and the terminal protruding portion protruding from the low-potential connecting portion to the one axial side is soldered to the low-potential connecting portion. 11. The controller-integrated rotating electric machine according to claim 10, which is connected to one surface in the axial direction. The filter unit is integrally molded with mold resin,
12. The controller-integrated dynamoelectric machine according to claim 11, wherein one axial surface of said high potential connecting portion and said low potential connecting portion is exposed outside from said mold resin. walls formed of the mold resin are arranged around the terminal projecting portion of the high potential side filter terminal and the terminal projecting portion of the low potential side filter terminal;
The distance between the center of the terminal projecting portion of the high-potential filter terminal and the wall and the distance between the center of the terminal projecting portion of the low-potential filter terminal and the wall are 1.5 mm or more. The controller-integrated dynamoelectric machine according to claim 12 . The filter unit has a filter cover that covers the plurality of filter members from the other side in the axial direction,
The controller-integrated dynamoelectric machine according to any one of claims 6 to 13, wherein the filter unit has a filter unit through hole penetrating in the axial direction in a portion covered with the filter cover. The filter unit has a fitting portion recessed toward the other side in the axial direction on one side surface in the axial direction,
The first intermediate connection member and the second intermediate connection member are provided by being fitted to the fitting portion,
15. The control device according to any one of claims 6 to 14, wherein each of the fitting portions has, on an inner peripheral surface thereof, at least three protruding portions that protrude inward and extend in the axial direction. Integrated rotating electric machine. The controller-integrated dynamoelectric machine according to any one of claims 6 to 15, wherein a corner portion of the outer peripheral portion of the filter unit has a curved surface of at least R2 or more. 3. The filter unit includes an insulating wall between the high potential side terminal and the low potential side terminal, the insulating wall protruding toward the other side in the axial direction beyond the high potential side terminal and the low potential side terminal. 17. The controller-integrated dynamoelectric machine according to any one of 6 to 16. the case has a case protruding portion protruding to the other axial side at a position along a part of the circumference of the first intermediate connection member on the other axial side surface;
The controller-integrated dynamoelectric machine according to any one of claims 1 to 17, wherein the case has at least two case projecting portions.

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