JP6787164B2 - Control device integrated rotary electric machine - Google Patents

Description

The present invention relates to a controller-integrated rotary machine that integrally includes a rotary electric machine and a control device.

Conventionally, a controller-integrated rotary electric machine including a rotary electric machine and a control device for controlling the rotary electric machine is known (for example, Patent Document 1). In a rotary electric machine integrated with a control device, the control device includes a power module, a heat sink, a bus bar, and a case member. A plurality of power modules are arranged around the rotation axis of the rotary electric machine. Each power module has a switching element and a diode. Each power module is bonded to a heat sink via a thermally conductive and insulating adhesive.

The bus bar has an inner wall portion, an outer wall portion, and a flat wall portion, and is insert-molded into a case member as an insulator. The bus bar has a positive electrode bus bar connected to the positive electrode power supply terminal of the power module and a negative electrode bus bar connected to the negative electrode power supply terminal of the power module. The positive electrode bus bar and the negative electrode bus bar are each connected to an external connection terminal member connected to the positive electrode terminal of the power supply or an external connection terminal member connected to the negative electrode terminal of the power supply. The case member is adhered to the heat sink via an adhesive. The power module is housed in a recess formed by a case member and a heat sink. Further, an insulating member having an insulating property is injected into the recess formed by the case member and the heat sink described above.

Japanese Unexamined Patent Publication No. 2012-249371

In the controller-integrated rotary electric machine described in Patent Document 1 described above, since the positive electrode bus bar and the negative electrode bus bar are arranged on opposite sides in the radial direction with the power module interposed therebetween, the positive electrode bus bar and the negative electrode bus bar are largely separated from each other. Further, a plurality of negative electrode bus bars are provided around the rotation axis of the rotary electric machine. Therefore, in each bus bar, self-inductance is generated without being canceled.

In the presence of such self-inductance, a surge voltage is generated when the current flowing through the bus bar changes. Power modules made of MOS, etc. must be designed to withstand the surge voltage applied, and in order to increase the withstand voltage while maintaining the same on-resistance, it is necessary to increase the chip size of the power module, and as a result. , The control device becomes large. Further, since a magnetic flux is generated when a current flows through the bus bar, the magnetic flux adversely affects an external device, an internal sensor, or the like as noise.

The present invention has been made in view of such a point, and an object of the present invention is to provide a rotary electric machine with an integrated control device capable of minimizing the adverse effect of self-inductance generated in each bus bar.

One aspect of the invention made to solve the above problems is controlled by a rotary electric machine, a control circuit for controlling the rotary electric machine, and a plurality of control circuits arranged around the rotation axis of the rotary electric machine. The switching element module, the positive electrode bus bar that connects the positive electrode power supply terminal of the switching element module to the first external connection terminal member, and the negative electrode bus bar that connects the negative electrode power supply terminal of the switching element module to the second external connection terminal member. A control device integrated rotary electric machine including the positive electrode bus bar and the negative electrode bus bar, both of which are arranged radially inside the switching element module, and the positive electrode bus bar and the negative electrode bus bar. The bus bar is formed and arranged along the bus bar while being separated from each other while maintaining a predetermined interval, and the control device is arranged radially outward with respect to the switching element module. A wiring member for connecting the output terminal of the module to the stator winding of the rotary electric machine is provided, and the positive electrode power supply terminal and the negative electrode power supply terminal are each provided radially inside the switching element module, and the output terminal is provided. , A controller-integrated rotary electric machine provided on the outer side in the radial direction of the switching element module .

According to this configuration, since the mutual inductance of the other bus bar acts on each of the positive electrode bus bar and the negative electrode bus bar in the opposite direction to the self-inductance, the self-inductance of the positive electrode bus bar and the self-inductance of the negative electrode bus bar can be canceled by the mutual inductance, respectively. it can. Therefore, the adverse effect due to the self-inductance generated in each bus bar can be minimized.
According to this configuration, the wiring path can be configured in the shortest distance for connecting the stator winding and the output terminal of the switching element module, and it is not necessary to route the wiring in a complicated path. ..
Further, according to this configuration, it is possible to avoid the connection between the power supply terminal in the switching element module and the output terminal connected to the outside in the radial direction. It is not necessary to arrange a plurality of positive electrode bus bars or negative electrode bus bars on the radial outer side of the switching element module, and the number of positive electrode bus bars or negative electrode bus bars can be limited to one, and the number of parts thereof can be reduced. Further, the total length of the positive electrode bus bar and the negative electrode bus bar itself can be shortened, whereby the self-inductance of these bus bars can be reduced. Further, the outer diameter of the control device can be reduced.

Incidentally, the control device, with one terminal connected between a connecting portion between the connecting portion and the front KiTadashi pole power terminal of the first external connection terminal member in the positive bus bar, the other terminal connected thereto between a connecting portion between the connecting part and the front Kimake pole power terminal and the second external connection terminal member in the negative bus bar, having a smoothing circuit for smoothing the voltage, and the positive electrode bus bar The negative electrode bus bar is formed and arranged so as to extend from the connection portion with the smoothing circuit to the connection portion with the power supply terminal of the switching element module while being separated from each other while maintaining the predetermined interval. You may be .

According to this configuration, while suppressing the voltage fluctuation between the positive electrode bus bar and the negative electrode bus bar by the smoothing circuit, currents in opposite directions can flow through the positive electrode bus bar and the negative electrode bus bar, so that the inductance generated inside the rotary electric machine is generated. It is possible to secure the effect of reducing.

According to the third aspect of the present invention, the positive electrode bus bar and the negative electrode bus bar are each a plate-shaped rotary electric machine with an integrated control device. According to this configuration, it is possible to easily maintain a predetermined interval between the positive electrode bus bar and the negative electrode bus bar in the radial direction, so that the effect of reducing the inductance generated in each bus bar can be ensured.

The positive electrode bus bar extends from the connection portion side with the first external connection terminal member to the left and right around the rotation axis of the rotary electric machine, and the negative electrode bus bar is connected to the second external connection terminal member. It may extend from the portion side to the left and right around the rotation axis of the rotary electric machine.

According to this configuration, it is possible to reduce the difference between the shortest path and the longest path among the path lengths from the connection portion side with the external connection terminal member to the switching element module in each of the positive electrode bus bar and the negative electrode bus bar. Therefore, the difference in inductance and the difference in electrical resistance in each switching element module can be reduced, which makes it possible to further suppress the surge voltage and reduce magnetic flux noise.

At least one of the positive electrode bus bar and the negative electrode bus bar is left and right around the rotation axis of the rotary electric machine from the connection portion side with the first external connection terminal member or the connection portion side with the second external connection terminal member. It may extend to each of them and may be formed and arranged symmetrically.

According to this configuration, it is possible to reduce the difference between the shortest path and the longest path among the path lengths from the connection portion side with the external connection terminal member to the switching element module in each of the positive electrode bus bar and the negative electrode bus bar. Therefore, the difference in inductance and the difference in electrical resistance in each switching element module can be reduced, which makes it possible to further suppress the surge voltage and reduce magnetic flux noise.

A plurality of the switching element modules are arranged so that a non-arranged region is partially provided around the rotation axis of the rotary electric machine, and at least the first external connection terminal member or the second external connection terminal is provided. The member may be arranged on the non-dispersion region side around the rotation axis of the rotary electric machine.

According to this configuration, the positive electrode bus bar and the negative electrode bus bar are aligned with each other in substantially the entire area around the rotation axis of the rotary electric machine. Therefore, it is possible to cancel the self-inductance of the bus bar over substantially the entire area around the rotation axis, thereby further suppressing the surge voltage and reducing the magnetic flux noise described above.

The positive electrode bus bar or the negative electrode bus bar may have an opening that opens on the side opposite to the non-dispersed region with respect to the rotating shaft of the rotating electric machine.

According to this configuration, the longest path of the path lengths to the switching element module can be shortened in each of the positive electrode bus bar and the negative electrode bus bar. Therefore, the difference in inductance and the difference in electrical resistance in each switching element module can be reduced, which makes it possible to further suppress the surge voltage and reduce magnetic flux noise.

The control circuit is mounted on a control board having a notch formed in a part around the rotation axis of the rotary electric machine, and the control board has the notch around the rotation axis of the rotary electric machine. It may be arranged so as to be located on the non-arranged region side.

According to this configuration, it is possible to secure an arrangement space for an external connection terminal member or the like to which the bus bar is connected without affecting the arrangement of the switching element module.

The positive electrode bus bar and the negative electrode bus bar may be arranged apart from each other in the radial direction with respect to the rotation axis of the rotary electric machine. According to this configuration, the total length of the control device in the axial direction can be shortened.

The negative electrode bus bar may be arranged radially inside the positive electrode bus bar. According to this configuration, it is possible to prevent a short circuit from occurring when an object such as metal flows through the fluid path formed near the rotation axis of the rotary electric machine of the control device and the object comes into contact with the negative electrode bus bar. Safety can be improved.

The positive electrode bus bar and the negative electrode bus bar may be arranged apart from each other in the axial direction with respect to the rotation axis of the rotary electric machine. According to this configuration, the outer diameter of the control device can be reduced.

It may be provided with a disposed an insulating member between the positive electrode bus bar and the negative bus bar. According to this configuration, the insulation between the positive electrode bus bar and the negative electrode bus bar can be ensured.

Even if the resin case in which the positive electrode bus bar and the negative electrode bus bar are integrated and the resin member injected with the control circuit and the switching element module housed inside the resin case are provided. Good .

According to this configuration, the control circuit and the switching element module housed inside the resin case can be securely fixed by using the resin member, and the thermal resistance can be reduced by using the resin member, and the switching element can be used. It is possible to facilitate cooling of the heat generating parts of the module and the bus bar.

It should be noted that a rotation detection sensor for detecting the rotation of the rotary electric machine may be provided, which is arranged on an extension line of the rotation axis of the rotary electric machine.

According to this configuration, the self-inductance exerted by the positive electrode bus bar and the negative electrode bus bar on the rotation detection sensor can be made uniform around the rotation axis, and the magnetic flux noise in the rotation detection sensor by those bus bars can be reduced.

Incidentally, a resin case in which the positive bus bar and the negative bus bar is integrated, the control circuit inside the resin case, the switching element module, and a resin member to which the rotation detecting sensor is implanted in a state of being accommodated , May be provided .

According to this configuration, the control circuit, the switching element module, and the rotation detection sensor housed inside the resin case can be securely fixed by using the resin member, and the thermal resistance can be lowered by using the resin member. This makes it easier to cool the heat-generating components of the switching element module and bus bar.

It is a top view when the control device integrated rotary electric machine which concerns on one Embodiment of this invention is seen from one side in the axial direction. It is a II-II sectional view of the rotary electric machine with integrated control device shown in FIG. It is a circuit diagram of the control device included in the control device integrated rotary electric machine of this embodiment. It is a top view when the case member of the control device integrated rotary electric machine of this embodiment is seen from one side in the axial direction. It is a VV cross-sectional view of the case member shown in FIG. It is a top view when the case member of the control device integrated rotary electric machine of this embodiment is seen from the other side in the axial direction. It is a top view of the case member of the control device integrated rotary electric machine of this embodiment after the power module is arranged, when viewed from one side in the axial direction. It is VIII-VIII sectional view of the case member shown in FIG. It is a top view of the case member of the control device integrated rotary electric machine of this embodiment after the wiring board is arranged, when viewed from one side in the axial direction. It is XX sectional view of the case member shown in FIG. It is sectional drawing of the case member in which the resin member was injected into the inside of the rotary electric machine with integrated control device of this embodiment. It is sectional drawing around the field circuit IC and the heat sink for the field circuit IC mounted on the wiring board of the rotary electric machine with integrated control device of this embodiment. It is sectional drawing around the microcomputer and the heat sink for a microcomputer mounted on the wiring board of the rotary electric machine with integrated control device of this embodiment. It is a cross-sectional view of XIV-XIV in the state shown in FIG. 4 in the positive electrode bus bar and the negative electrode bus bar of an example of the rotary electric machine with integrated control device of this embodiment. It is a cross-sectional view of XIV-XIV in the state shown in FIG. 4 in the positive electrode bus bar and the negative electrode bus bar of an example of the rotary electric machine with integrated control device of this embodiment. It is a cross-sectional view of XIV-XIV in the state shown in FIG. 4 in the positive electrode bus bar and the negative electrode bus bar of an example of the rotary electric machine with integrated control device of this embodiment. It is sectional drawing of XIV-XIV in the state shown in FIG. 4 in the positive electrode bus bar and the negative electrode bus bar of an example of the rotary electric machine with integrated control device of this embodiment. It is a figure for demonstrating the effect of the control device integrated rotary electric machine of this embodiment. It is sectional drawing of the main part of the control device integrated rotary electric machine which concerns on one modification of this invention. It is a circuit diagram of the control device provided in the control device integrated rotary electric machine which concerns on other modified forms of this invention. FIG. 17 is a plan view of a bus bar and a smoothing circuit of a rotary electric machine integrated with a control device including the control device shown in FIG. 17 when viewed from one side in the axial direction. It is a top view when the bus bar and the smoothing circuit of the control device integrated rotary electric machine which concerns on still another modified form of this invention are seen from one side in the axial direction.

Hereinafter, specific embodiments of the controller-integrated rotary electric machine according to the present invention will be described with reference to FIGS. 1 to 19.

First, the configuration of the controller-integrated rotary electric machine 1 of the present embodiment will be described.

The rotary electric machine 1 with an integrated control device is mounted on a vehicle, for example, and is supplied with electric power from a power source 2 such as a battery to generate a driving force for driving the vehicle and is also driven by the engine of the vehicle. It is a device that generates electric power for charging the power source 2 by supplying electric power. As shown in FIGS. 1 and 2, the rotary electric machine 1 with an integrated control device includes the rotary electric machine 10 and the control device 11 integrally.

The rotary electric machine 10 is a device that generates a driving force for driving a vehicle by being supplied with electric power, and also generates an electric power for charging the power source 2 by being supplied with a driving force from an engine. is there. The rotary electric machine 10 is a three-phase AC motor generator. The rotary electric machine 10 includes a housing 100, a stator 101, a rotor 102, a slip ring 103, a brush 104, and a rotation angle detecting magnet 105.

The housing 100 is a member that houses the stator 101 and the rotor 102 and rotatably supports the rotor 102. The housing 100 is also a member to which the control device 11 is fixed. The housing 100 includes an arc plate-shaped fitting portion 100a that fits with the control device 11 when the control device 11 is fixed.

The stator 101 is a member that forms a part of a magnetic path and generates a rotating magnetic field by flowing an electric current. The stator 101 includes a stator core 101a and a stator winding 101b. The stator winding 101b is wound around the stator core 101a. Two sets of stator windings 101b are provided. The stator winding 101b of each set is composed of a three-phase winding. The three-phase windings of the stator windings 101b of each set are arranged at equal intervals with each other and are arranged in a state of being 120 ° out of phase. As shown in FIG. 3, the rotary electric machine 10 has two sets of stator windings 101b-1 and 101b-2, each of which is composed of three-phase windings. The two sets of stator windings 101b-1 and 101b-2 are arranged so as to be offset from each other by a predetermined electric angle (for example, an electric angle of 30 °).

Hereinafter, the stator winding 101b-1 is referred to as a UVW-based stator winding 101b-1, and the stator winding 101b-2 is referred to as an XYZ-based stator winding 101b-2, respectively. The UVW-based stator winding 101b-1 is composed of a U-phase winding 101b-1U, a V-phase winding 101b-1V, and a W-phase winding 101b-1W, and the XYZ-based stator winding 101b-2 is X. It shall consist of a phase winding 101b-2X, a Y phase winding 101b-2Y, and a Z phase winding 101b-2Z. Further, the U-phase winding 101b-1U and the X-phase winding 101b-2X are deviated from each other by a predetermined electrical angle, and the V-phase winding 101b-1V and the Y-phase winding 101b-2Y are deviated from each other by a predetermined electrical angle. The W-phase winding 101b-1W and the Z-phase winding 101b-2Z deviate from each other by a predetermined electrical angle.

The rotor 102 is a member that forms a part of a magnetic path and forms a magnetic pole by flowing an electric current. The rotor 102 includes a rotating shaft 102a, a rotor core 102b, and a rotor winding 102c. The rotor core 102b has a hole through which the rotating shaft 102a is inserted, and is arranged on the outer peripheral side of the rotating shaft 102a. The rotor winding 102c is wound around the rotor core 102b.

The slip ring 103 and the brush 104 are members that supply direct current to the rotor winding 102c. The slip ring 103 is fixed to the outer peripheral surface of the rotating shaft 102a via the insulating member 103a. The brush 104 is held by the brush holder 104b on the housing 100 side in a state where the tip surface is in contact with the outer peripheral surface of the slip ring 103 while being pressed toward the rotating shaft 102a by the spring 104a.

The rotation angle detection magnet 105 is a member that generates a magnetic field for detecting the rotation angle of the rotor 102. The rotation angle detection magnet 105 is fixed to the axial end of the rotation shaft 102a while being held by the magnet holder 105a.

The control device 11 is arranged on the outer side in the axial direction with respect to the housing 100 of the rotary electric machine 10. The control device 11 controls the electric power supplied from the power source 2 such as a battery to the rotary electric machine 10 in order to generate a driving force in the rotary electric machine 10, and also in order to charge the power source 2 in order to charge the rotary electric machine 10. It is a device that converts the generated power and supplies it to the power supply 2.

As shown in FIGS. 1, 2 and 4 to 11, the control device 11 is fixed to the rotation angle detection circuit IC 110a, the power module 110b, the field circuit IC 110c, the microcomputer 110d, and the case member 111a. Members 111b, 111c, lid members 111d, power module heat sink 112a, field circuit IC heat sink 112b, microcomputer heat sink 112c, control board 113a, power supply wiring members 113b, 113c, and stator wiring. It includes a member 113d, a rotor wiring member 113e, an external communication wiring member 113f, and a resin member 114.

The control board 113a is a plate-shaped internal wiring member for wiring between the rotation angle detection circuit IC 110a, the power module 110b, the field circuit IC 110c, and the microcomputer 110d. A wiring pattern is formed on the surface and the inner layer of the control board 113a. The control board 113a is fixed inside the case member 111a. The control board 113a is arranged so that the plate surface of the control board 113a faces the rotary electric machine 10 in the axial direction of the rotary shaft 102a. As shown in FIG. 9, the control board 113a has a notch 115 formed in a part around the rotation shaft 102a.

The rotation angle detection circuit IC 110a is mounted on the back surface of the control board 113a (that is, the surface on the rotation electric machine 10 side). The rotation angle detection circuit IC 110a is arranged so as to face the rotation angle detection magnet 105 in the axial direction. The rotation angle detection circuit IC 110a is a rotation detection sensor as an electronic component constituting a circuit for detecting the rotation angle of the rotor 102 based on the magnetic field generated by the rotation angle detection magnet 105.

The power module 110b is an electronic component that constitutes an inverter circuit as a power conversion device that performs power conversion with the rotary electric machine 10. The power module 110b is a rectangular switching element module including an upper and lower arm element including an upper arm element and a lower arm element constituting a switching circuit in the same resin package. A plurality of power modules 110b are provided. Hereinafter, it is assumed that three power modules 110b are provided, and they are referred to as a first power module 110b-1, a second power module 110b-2, and a third power module 110b-3, respectively.

As shown in FIG. 7, the three power modules 110b-1, 110b-2, 110b-3 are arranged around the rotating shaft 102a of the rotary electric machine 10 so as to surround the rotating shaft 102a in an annular shape. Further, a non-arranged region 116 in which the power module 110b is not arranged is provided in a part around the rotating shaft 102a of the rotary electric machine 10. The non-dispersion region 116 is a region corresponding to the notch 115 of the control board 113a. That is, the notch 115 of the control board 113a is arranged on the non-dispersion region 116 side around the rotation shaft 102a of the rotary electric machine 10.

Each of the power modules 110b-1, 110b-2, and 110b-3 is a module in which two sets (that is, two phases) of upper and lower arm elements including an upper arm element and a lower arm element are integrated. The power module 110b-1 includes upper and lower arm elements of the U-phase and V-phase of the UVW-based stator winding 101b-1 of the rotary electric machine 10. The power module 110b-2 includes upper and lower arm elements for each of the W phase of the UVW stator winding 101b-1 and the X phase of the XYZ stator winding 101b-2. Further, the power module 110b-3 includes upper and lower arm elements of the Y phase and the Z phase of the XYZ system stator winding 101b-2, respectively.

As shown in FIG. 3, each of the power modules 110b-1, 110b-2, and 110b-3 has four switching elements 117 corresponding to the two-phase upper and lower arm elements and four switching elements corresponding to each of the arm elements. It has a diode 118 and. The switching element 117 is, for example, a MOSFET or an IGBT. The diode 118 is a diode for current return connected in parallel to the switching element 117. Each diode 118 has a negative temperature characteristic in which the forward voltage VF decreases as the temperature increases.

The switching element 117 of the power module 110b is controlled by the microcomputer 110d. When each switching element 117 is appropriately switched at a predetermined timing, the direct current supplied from the power supply 2 is converted into a three-phase alternating current and supplied to the stator winding 101b. When the switching of the switching element 117 is stopped, the three-phase alternating current supplied from the stator winding 101b is converted into direct current by the diode 118 and supplied to the power supply 2.

As shown in FIG. 9, the field circuit IC 110c is mounted on the surface of the control board 113a. The field circuit IC 110c is controlled by the microcomputer 110d. The field circuit IC 110c is an electronic component that constitutes a circuit for supplying direct current to the rotor winding 102c.

As shown in FIG. 9, the microcomputer 110d is mounted on the surface of the control board 113a. The microcomputer 110d is an electronic component that controls the power module 110b and the field circuit IC 110c based on a command input from the outside and a detection result of the rotation angle detection circuit IC 110a. The microcomputer 110d operates according to a program stored in advance, and controls the power module 110b and the field circuit IC 110c.

The power module 110b, the field circuit IC 110c, and the microcomputer 110d generate heat during operation. The field circuit IC 110c and the microcomputer 110d are low heat generation electronic components having a relatively low heat generation amount. On the other hand, the power module 110b is a high heat generation electronic component having a higher heat generation amount than the field circuit IC 110c and the microcomputer 110d.

The case member 111a is a member made of resin that houses the rotation angle detection circuit IC110a, the power module 110b, the field circuit IC110c, and the microcomputer 110d. As shown in FIGS. 5, 8, 10, and 11, the case member 111a has a bottom portion 111e, a peripheral wall portion 111f, an opening portion 111g, and a fitting portion 111h. The bottom portion 111e is a plate-shaped bottom portion. The peripheral wall portion 111f is a tubular wall portion formed on one surface side of the bottom portion 111e. The opening 111g is an open portion formed on the side of the peripheral wall portion 111f opposite to the bottom portion 111e. The fitting portion 111h is a portion formed on the other surface side of the bottom portion 111e, and is an arc plate-shaped portion that fits with the fitting portion 100a of the housing 100 when fixed to the rotary electric machine 10.

The fixing members 111b and 111c are members made of metal for fixing the case member 111a to the housing 100. The fixing members 111b and 111c are also members that dissipate heat generated by the rotary electric machine 10. The fixing members 111b and 111c are members made of, for example, aluminum.

As shown in FIG. 6, the fixing member 111b has a main body portion 111i, a fin portion 111j, and a hole portion 111k. The fixing member 111c has a main body portion 111l, a fin portion 111m, and a hole portion 111n. The main body portions 111i and 111l are plate-shaped portions. The fin portions 111j and 111m are thin plate-shaped portions formed on one surface side of the main body portions 111i and 111l at predetermined intervals. The holes 111k and 111n are portions formed in the main bodies 111i and 111l through which bolts for fixing the case member 111a to the housing 100 are inserted. The fixing members 111b and 111c are insert-molded into the case member 111a with the fin portions 111j and 111m and the hole portions 111k and 111n exposed to the outside of the case member 111a on the rotary electric machine 10 side.

The lid member 111d is a plate-shaped member made of resin for covering the opening 111g of the case member 111a.

The heat sink 112a for a power module is a heat-dissipating member for high heat generation made of metal for radiating the heat generated by the power module 110b to the outside of the case member 111a, and is made of, for example, aluminum. The power module heat sink 112a has a main body portion 112d and a fin portion 112e. The main body portion 112d is a plate-shaped portion. The fin portion 112e is a thin plate-shaped portion formed on one surface side of the main body portion 112d at a predetermined interval. The surface of the power module heat sink 112a is anodized. The power module heat sink 112a is electrically insulated with the other surface of the main body 112d exposed inside the case member 111a and the fin portion 112e exposed to the outside of the case member 111a on the rotary electric machine 10 side. , Is insert-molded on the bottom 111e.

The field heat sink 112b for a field circuit IC is a heat dissipation member for low heat generation made of metal for radiating the heat generated by the field circuit IC 110c to the outside of the case member 111a, and is made of, for example, aluminum. As shown in FIG. 12, the field heat sink 112b for a field circuit IC has a main body portion 112f and a fin portion 112g. The main body portion 112f is a plate-shaped portion. The fin portion 112g is a thin plate-shaped portion formed on one surface side of the main body portion 112f at predetermined intervals. The field circuit IC heat sink 112b is electrically insulated with the main body portion 112f protruding inside the case member 111a and the fin portion 112g exposed to the outside of the case member 111a on the rotary electric machine 10 side. It is insert-molded on the bottom 111e.

The heat sink 112c for a microcomputer is a heat-dissipating member for low heat generation made of metal for radiating the heat generated by the microcomputer 110d to the outside of the case member 111a, and is made of, for example, aluminum. As shown in FIG. 13, the heat sink 112c for a microcomputer has a main body portion 112h and a fin portion 112i. The main body portion 112h is a plate-shaped portion. The fin portion 112i is a thin plate-shaped portion formed on one surface side of the main body portion 112h at predetermined intervals. The heat sink 112c for a microcomputer is electrically insulated with the main body portion 112h protruding inside the case member 111a and the fin portion 112i exposed to the outside of the case member 111a on the rotary electric machine 10 side, and the bottom portion 111e. It is insert-molded into.

The fixing members 111b and 111c, the heat sink 112a for the power module, the heat sink 112b for the field circuit IC and the heat sink 112c for the microcomputer are separated from each other, and the case member 111a is interposed with the resin forming the case member 111a interposed therebetween. It is insert-molded into. The total area of the heat sink 112a for the power module, the heat sink 112b for the field circuit IC, and the heat sink 112c for the microcomputer as seen from the rotary electric machine 10 mounting surface side of the case member 111a is viewed from the rotary electric machine 10 mounting surface side of the case member 111a. It is set to be smaller than the area surrounded by the contour of the case member 111a. Further, the fixing members 111b and 111c have a total area of the case member 111a seen from the rotary electric machine 10 mounting surface side, and the heat sink 112a for the power module and the field circuit IC seen from the rotary electric machine 10 mounting surface side of the case member 111a. It is set to be smaller than the total area of the heat sink 112b and the heat sink 112c for a microcomputer.

The power supply wiring member 113b is a positive electrode bus bar made of metal for connecting the power supply connection portion of the control board 113a and the positive electrode power supply terminal of the power module 110b to the positive electrode terminal of the power supply 2 such as a battery provided outside the case member 111a. Is. The power supply wiring member 113c is a negative electrode made of metal for connecting the power supply connection portion of the control board 113a and the negative electrode power supply terminal of the power module 110b to the negative electrode terminal of the power supply 2 provided outside the case member 111a via the vehicle body. It is a bus bar. Hereinafter, the power supply wiring member 113b will be referred to as a positive electrode bus bar 113b, and the power supply wiring member 113c will be referred to as a negative electrode bus bar 113c, respectively. The positive electrode bus bar 113b and the negative electrode bus bar 113c are made of the same metal material.

The positive electrode bus bar 113b and the negative electrode bus bar 113c are, for example, plate-shaped members formed by bending and molding a copper plate, and are plate-shaped members having at least one flat surface. As shown in FIG. 14, the positive electrode bus bar 113b and the negative electrode bus bar 113c each have a rectangular cross-sectional shape ((A)), one surface is flat, and the back surface with respect to the one surface is tapered by cutting out corners. It is formed so as to have a convex shape ((B) in the same figure), which is a molded surface, or a flat square shape ((C) or (D) in the same figure) with chamfered corners. The shape may be formed by cutting out a plate material, and the flat shape may be formed by crushing a round material. Both the positive electrode bus bar 113b and the negative electrode bus bar 113c are integrated with the case member 111a. The bus bar 113b and the negative electrode bus bar 113c are insulated from each other by the case member 111a.

The positive electrode bus bar 113b exposes the connection portion 113g connected to the control board 113a and the connection portion 113i connected to each of the two-phase upper arm elements of each power module 110b to the inside of the case member 111a and to the power supply 2 side. The connecting portion 113k to be connected is insert-molded into the case member 111a in a state of being exposed to the outside of the case member 111a. Further, the negative electrode bus bar 113c exposes the connecting portion 113h connected to the control board 113a and the connecting portion 113j connected to each of the two-phase lower arm elements of each power module 110b inside the case member 111a, and also exposes the power supply 2 The connecting portion 113l connected to the side is insert-molded into the case member 111a in a state of being exposed to the outside of the case member 111a.

Both the connection portion 113k of the positive electrode bus bar 113b with the power supply 2 and the connection portion 113l of the negative electrode bus bar 113c with the power supply 2 are on the non-dispersed region 116 side around the rotation shaft 102a of the rotary electric machine 10, that is, the notch 115 side of the control board 113a. It is located in. The connecting portion 113k of the positive electrode bus bar 113b is divided into two and provided. These two connecting portions 113k are connected to each other. One connecting portion 113l of the negative electrode bus bar 113c is provided radially outward by an equal distance from the two connecting portions 113k of the positive electrode bus bar 113b.

The positive electrode bus bar 113b extends from the two connecting portions 113k to the left and right around the rotating shaft 102a of the rotary electric machine 10. The left and right directions are determined when the control device 11 is arranged on the upper side and the rotary electric machine 10 is arranged on the lower side when the positive electrode bus bar 113b faces the rotating shaft 102a, and the positive electrode bus bar 113b is used as the rotating electric machine. It is assumed that the rotation direction is not the one viewed from the inside in the axial direction on the 10 side, but the rotational direction when viewed from the outside in the axial direction on the rotating electric machine 10 side. As shown in FIG. 4, the positive electrode bus bar 113b includes a counterclockwise positive electrode bus bar portion 113bL and a clockwise positive electrode bus bar portion 113bR. The counterclockwise positive electrode bus bar portion 113bL is located on the rotation shaft 102a side from the connecting portion 113k of one of the two connecting portions 113k (specifically, the connecting portion 113l arranged radially outward with respect to the two connecting portions 113k). It extends counterclockwise (that is, counterclockwise) with respect to the rotation axis 102a from the side facing to the right (which is arranged on the right side). Further, the clockwise positive electrode bus bar portion 113bR rotates from the other connection portion 113k of the two connection portions 113k (specifically, the one arranged from the connection portion 113l toward the rotation shaft 102a side to the left). It extends clockwise (ie, clockwise) with respect to the axis 102a.

The negative electrode bus bar 113c extends inward in the radial direction from the connecting portion 113l and extends to the left and right around the rotation shaft 102a of the rotary electric machine 10. The left and right directions are determined when the control device 11 is arranged on the upper side and the rotary electric machine 10 is arranged on the lower side when the negative electrode bus bar 113c faces the rotating shaft 102a. It is assumed that the rotation direction is not when viewed from the inside in the axial direction which is the 10 side, but when viewed from the outside in the axial direction which is not the 10 side of the rotary electric machine. As shown in FIG. 4, the negative electrode bus bar 113c includes a counterclockwise negative electrode bus bar portion 113cL and a clockwise negative electrode bus bar portion 113cR. The counterclockwise negative electrode bus bar portion 113cL extends counterclockwise (that is, counterclockwise) with respect to the rotation shaft 102a from the connecting portion 113l side. The clockwise negative electrode bus bar portion 113cR extends clockwise (that is, clockwise) with respect to the rotation shaft 102a from the connection portion 113l side.

Each of the positive electrode bus bar 113b and the negative electrode bus bar 113c has a rotation angle detection magnet 105 and a rotation angle detection circuit IC 110a arranged on a straight line passing through the center thereof (however, this straight line substantially coincides with the rotation axis 102a). Is formed in. That is, the rotation angle detection magnet 105 is fixed to the axial end of the rotation shaft 102a. Further, the rotation angle detection circuit IC 110a is arranged on an extension line of the rotation shaft 102a passing through the central portion of the positive electrode bus bar 113b and the negative electrode bus bar 113c.

The positive electrode bus bar 113b is formed and arranged symmetrically around the rotation axis 102a so as to face the rotation axis 102a from the midpoint of the two connecting portions 113k. Specifically, the counterclockwise positive bus bar portion 113bL and the clockwise positive positive bus bar portion 113bR extend substantially parallel to the plane orthogonal to the rotation axis 102a and pass through the center of the rotation axis 102a to rotate the axis. It is formed and arranged symmetrically (that is, line-symmetrically) with respect to a line extending in a direction orthogonal to 102a.

The positive electrode bus bar 113b has an opening 119b that opens at a part around the rotation shaft 102a of the rotary electric machine 10. The opening 119b is provided at a position opposite to the midpoint of the line segment connecting the two connecting portions 113k with the rotation shaft 102a interposed therebetween, and is opposite to the non-arranged region 116 with respect to the rotation shaft 102a. It is a part that opens to. The counterclockwise positive electrode bus bar portion 113bL and the clockwise positive electrode bus bar portion 113bR are separated from the two connecting portions 113k via the opening 119b at positions opposite to each other with the rotation shaft 102a interposed therebetween, without being connected to each other. ..

The negative electrode bus bar 113c is formed and arranged symmetrically around the rotation shaft 102a so as to face the rotation shaft 102a from the connection portion 113l. Specifically, the counterclockwise negative negative bus bar portion 113cL and the clockwise negative negative bus bar portion 113cR extend substantially parallel to the plane orthogonal to the rotation axis 102a and pass through the center of the rotation axis 102a to rotate the axis. It is formed and arranged symmetrically (that is, line-symmetrically) with respect to a line extending in a direction orthogonal to 102a.

The negative electrode bus bar 113c has an opening 119c that opens at a part around the rotation shaft 102a of the rotary electric machine 10. The opening 119c is provided at a position opposite to the connecting portion 113l with the rotating shaft 102a interposed therebetween, and is a portion that opens to the rotating shaft 102a on the opposite side of the non-dispersed region 116. The counterclockwise negative electrode bus bar portion 113cL and the clockwise negative electrode bus bar portion 113cR are separated from the connecting portion 113l via the opening 119c at positions opposite to each other with the rotation shaft 102a interposed therebetween, without being connected to each other.

Upper arm elements of the U phase and V phase included in the power module 110b-1 and the W phase included in the power module 110b-2 are connected to the clockwise positive electrode bus bar portion 113bR of the positive electrode bus bar 113b. Further, upper arm elements of the X phase included in the power module 110b-2 and the Y phase and Z phase included in the power module 110b-3 are connected to the counterclockwise positive electrode bus bar portion 113bL of the positive electrode bus bar 113b.

The lower arm elements of the U phase and V phase included in the power module 110b-1 and the W phase included in the power module 110b-2 are connected to the clockwise negative electrode bus bar portion 113cR of the negative electrode bus bar 113c. Further, lower arm elements of the X phase included in the power module 110b-2 and the Y phase and Z phase included in the power module 110b-3 are connected to the counterclockwise negative electrode bus bar portion 113cL of the negative electrode bus bar 113c.

Both the positive electrode bus bar 113b and the negative electrode bus bar 113c are arranged on the rotation shaft 102a side (that is, inside in the radial direction) with respect to the power module 110b arranged around the rotation shaft 102a. The positive electrode bus bar 113b and the negative electrode bus bar 113c are insulated from each other, and are arranged apart from each other in the radial direction of the rotating shaft 102a of the rotary electric machine 10. The positive electrode bus bar 113b and the negative electrode bus bar 113c may each have a U-shaped or rectangular portion that is bent or curved in the axial direction in order to avoid contact with the other bus bars 113c and 113b, respectively.

The positive electrode bus bar 113b and the negative electrode bus bar 113c each have a shape (for example, a rectangular shape) bent or curved around the rotation axis 102a along the inner peripheral side wall surfaces of the three power modules 110b on the radial inside with respect to the power module 110b. In addition to being formed, the positive electrode bus bar 113b is arranged so as to extend radially inward with respect to the negative electrode bus bar 113c.

The positive electrode bus bar 113b and the negative electrode bus bar 113c are formed and arranged along each other. As shown in FIG. 14, the positive electrode bus bar 113b and the negative electrode bus bar 113c are arranged so that their planes face each other in the radial direction. The positive electrode bus bar 113b and the negative electrode bus bar 113c are separated from each other in a state where a predetermined distance A is maintained in the radial direction over substantially the entire area extending along the portion. Currents flow in opposite directions between the positive electrode bus bar 113b and the negative electrode bus bar 113c separated by a predetermined interval A. In the positive electrode bus bar 113b and the negative electrode bus bar 113c, the normals of the respective plate surfaces extend parallel to the plane orthogonal to the rotation axis 102a, and the plate surfaces are separated from each other in the direction orthogonal to the rotation axis 102a. They are arranged so that they face each other (that is, face each other). The predetermined interval A may be a predetermined constant interval A. Further, in the positive electrode bus bar 113b and the negative electrode bus bar 113c, the normals of the respective plate surfaces extend in the axial direction of the rotation axis 102a, and the walls of the plates are separated from each other in the direction orthogonal to the rotation axis 102a. They may be arranged so as to face each other.

The stator wiring member 113d is a wiring member made of metal for connecting the output terminals of the upper and lower arm elements of each power module 110b to the stator winding 101b provided outside the case member 111a. The stator wiring member 113d is, for example, a member formed by bending a copper plate. The stator wiring member 113d is a case member in a state where the connecting portion 113m with the power module 110b is exposed inside the case member 111a and the connecting portion 113n with the stator winding 101b is exposed outside the case member 111a. It is insert-molded on 111a.

The rotor wiring member 113e is made of metal for connecting the rotor winding connection portion of the control board 113a to the rotor winding 102c provided outside the case member 111a via the brush 104 and the slip ring 103. It is an external wiring member. The rotor wiring member 113e is, for example, a member formed by bending a copper plate. The rotor wiring member 113e is inserted into the case member 111a in a state where the connection portion 113o with the control board 113a is exposed inside the case member 111a and the connection portion 113p with the brush 104 is exposed to the outside of the case member 111a. It is molded.

The external communication wiring member 113f is an external wiring member made of metal for wiring the external communication connection portion of the control board 113a to an external device provided outside the case member 111a. The external communication wiring member 113f is, for example, a member formed by bending a copper plate. The external communication wiring member 113f exposes the connection portion 113q to the control board 113a to the inside of the case member 111a and exposes the connection portion 113r to the external device to the outside of the case member 111a to the case member 111a. It is insert molded.

The power module 110b is arranged in contact with the other surface of the main body 112d of the heat sink 112a for the power module via a thin plate-shaped heat conductive member 110e having an insulating property. The power supply terminal of the power module 110b is connected to the connection portions 113i and 113j of the positive electrode bus bar 113b and the negative electrode bus bar 113c on the rotation shaft 102a side (that is, radially inside) of the power module 110b. The output terminal of the power module 110b is connected to the connection portion 113m of the stator wiring member 113d on the radial outer side of the power module 110b.

The rotation angle detection circuit IC 110a is arranged at a position facing the rotation angle detection magnet 105 in the axial direction of the rotation shaft 102a. The field circuit IC 110c is arranged in contact with the other surface of the main body 112f of the field circuit IC heat sink 112b via the control substrate 113a. The microcomputer 110d is arranged in contact with the other surface of the main body 112h of the heat sink 112c for the microcomputer via the control substrate 113a.

The resin member 114 has an insulating property injected into the case member 111a in order to waterproof the rotation angle detection circuit IC 110a, the power module 110b, the field circuit IC 110c, the microcomputer 110d, etc. housed inside the case member 111a. It is a member made of resin. The resin member 114 is, for example, a gel-like member. In the resin member 114, the rotation angle detection circuit IC 110a, the power module 110b, the field circuit IC 110c and the microcomputer 110d are housed inside the case member 111a, and the control board 113a, the bus bars 113b, 113c, the stator wiring member 113d, It is potted inside the case member 111a in a state of being wired by the rotor wiring member 113e and the external communication wiring member 113f. The opening 111g of the case member 111a is covered with the lid member 111d.

The control device 11 is fixed to the housing 100 by bolts 111o inserted into the holes of the fixing members 111b and 111c in a state where the fitting portion 111h of the case member 111a is fitted to the fitting portion 100a of the rotary electric machine 10. ing. An external connection terminal member 113u for connecting to the positive electrode terminal of the power supply 2 is connected to the connection portion 113k of the positive electrode bus bar 113b. An external connection terminal member 113v for connecting to the negative electrode terminal of the power supply 2 is connected to the connection portion 113l of the negative electrode bus bar 113c via the housing 100 and the vehicle body.

The external connection terminal members 113u and 113v are, for example, bolt-shaped members, respectively. The external connection terminal members 113u and 113v are arranged in the notch 115 provided in the control board 113a or outside the notch 115 in the radial direction, and are on the non-arranged region 116 side around the rotation shaft 102a of the rotary electric machine 10. It is located in. The connecting portion 113n of the stator wiring member 113d is connected to the stator winding 101b via the wiring member 113s. The connecting portion 113p of the rotor wiring member 113e is connected to the brush 104 via the wiring member 113t.

Next, the operation of the controller-integrated rotary electric machine 1 of the present embodiment will be described. First, the operation when the driving force for driving the vehicle is generated will be described.

The negative electrode terminal of the power supply 2 such as a battery is connected to the vehicle body and is connected to the connection portion 113l of the negative electrode bus bar 113c via the housing 100. When the ignition switch (not shown) of the vehicle is turned on, the positive electrode terminal of the power supply 2 is connected to the connecting portion 113k of the positive electrode bus bar 113b via the external connection terminal member 113u while the ignition switch (not shown) is turned on.

When such a connection is made, direct current is supplied to the power supply terminal of the power module 110b via the connection portions 113i and 113j of the positive electrode bus bar 113b and the negative electrode bus bar 113c. Further, direct current is supplied to the control board 113a via the connection portions 113g and 113h of the positive electrode bus bar 113b and the negative electrode bus bar 113c, and the rotation angle detection circuit IC 110a, the field circuit IC 110c and the microcomputer 110d are supplied via the wiring pattern of the control board 113a. DC is supplied to. The rotation angle detection circuit IC110a, the field circuit IC110c, and the microcomputer 110d each operate by supplying direct current.

The rotation angle detection circuit IC 110a detects the rotation angle of the rotor 102 based on the magnetic field generated by the rotation angle detection magnet 105 during operation. Further, during operation, the microcomputer 110d is based on a command input from the outside via the wiring pattern of the external communication wiring member 113f and the control board 113a, and the detection result of the rotation angle detection circuit IC 110a, and the power module 110b. And the operation of the field circuit IC110c are controlled.

The control board 113a is connected to the connection portion 113o of the rotor wiring member 113e. The connecting portion 113p of the rotor wiring member 113e is connected to the brush 104 via the wiring member 113t. The field circuit IC 110c is controlled by the microcomputer 110d, and supplies direct current to the rotor winding 102c via the wiring pattern of the control board 113a, the rotor wiring member 113e, the wiring member 113t, the brush 104, and the slip ring 103. ..

The control board 113a is also connected to the signal terminal of the power module 110b. The output terminal of the power module 110b is connected to the connection portion 113m of the stator wiring member 113d. The connecting portion 113n of the stator wiring member 113d is connected to the stator winding 101b via the wiring member 113s. The switching element 117 of the power module 110b is controlled by the microcomputer 110d, converts the direct current supplied to the power supply terminal into a three-phase AC, and connects to the stator winding 101b via the stator wiring member 113d and the wiring member 113s. Supply. When direct current is supplied from the power supply 2 to the stator winding 101b via the power module 110b in this way, the rotary electric machine 10 generates a driving force to drive the vehicle.

Next, the operation when generating the electric power for charging the power source 2 will be described.

When the driving force is supplied from the vehicle engine, the stator winding 101b generates three-phase alternating current. The microcomputer 110d stops the switching of the switching element 117 of the power module 110b. The diode 118 of the power module 110b converts the three-phase alternating current supplied from the stator winding 101b via the wiring member 113s and the stator wiring member 113d into DC, and converts the positive bus bar 113b, the negative negative bus bar 113c, and the external connection terminal. It is supplied to the power supply 2 via the member 113u. When direct current is supplied to the power source 2 in this way, the power source 2 is charged by the electric power generated by the rotary electric machine 10. The microcomputer 110d converts the three-phase alternating current generated by the stator winding 101b into direct current by switching the switching element 117 of the power module 110b based on the rotation angle detected by the rotation angle detection circuit IC 110a. It may be that.

Next, the feature portion of the controller-integrated rotary electric machine 1 of the present embodiment and its effect will be described.

In the present embodiment, the positive electrode bus bar 113b and the negative electrode bus bar 113c are formed and arranged so as to be separated from each other while maintaining a predetermined interval A in the radial direction with respect to the rotation shaft 102a. In such a configuration, as shown in FIG. 15, the direction of the current flowing through the positive electrode bus bar 113b and the direction of the current flowing through the negative electrode bus bar 113c are opposite to each other during the current flow. When currents flow in opposite directions to the positive electrode bus bar 113b and the negative electrode bus bar 113c, mutual inductance by the negative electrode bus bar 113c acts on the positive electrode bus bar 113b in the opposite direction to the self-inductance, and the positive electrode bus bar 113c has the positive electrode bus bar in the opposite direction to the self-inductance. Since the mutual inductance due to 113b acts, the self-inductance of the positive electrode bus bar 113b and the self-inductance of the negative electrode bus bar 113c can be canceled by the mutual inductance, respectively.

Therefore, according to the present embodiment, the adverse effect due to the self-inductance generated in each of the bus bars 113b and 113c can be minimized. Specifically, the surge voltage (V = L × dI / dt; where V is the surge voltage, L is the self-inductance, and I is the current) generated with the change in current during self-inductance generation. ) Can be suppressed, whereby the chip size of the power module 110b can be reduced, and eventually the control device 11 can be reduced in size. Further, the magnetic flux generated when a current flows through the bus bars 113b and 113c (Φ = L × I; where Φ is a magnetic flux) can be reduced, so that the magnetic flux is generated as noise in an external device or inside. It is possible to suppress adverse effects on the sensor (including the rotation angle detection circuit IC110a) and the like.

In the present embodiment, the positive electrode bus bar 113b and the negative electrode bus bar 113c are each formed in a plate shape having at least one flat surface. The positive electrode bus bar 113b and the negative electrode bus bar 113c are formed and arranged along each other, and are arranged so that the planes face each other. In such a configuration, the distance between the positive electrode bus bar 113b and the negative electrode bus bar 113c in the radial direction can be easily maintained at a predetermined distance A. Therefore, the effect of reducing the inductance generated in each of the bus bars 113b and 113c can be ensured.

Further, in the present embodiment, the output terminals of the power modules 110b are provided on the outer side in the radial direction of the module housing as shown in FIGS. 4 and 7. The control device 11 has a stator wiring member 113d and a wiring member 113s that connect the output terminal of the power module 110b and the stator winding 101b of the stator 101. The stator wiring member 113d and the wiring member 113s are arranged radially outward with respect to each power module 110b, and are connected to the stator winding 101b on the radial outside thereof.

As shown in FIG. 2, the stator winding 101b is arranged at a position radially outwardly separated from the rotation shaft 102a of the rotor 102, so that a lead wire connected to the stator winding 101b of the rotary electric machine 10 is provided. It is pulled out from the radial outside of the rotary electric machine 10. Therefore, the wiring path can be configured at the shortest distance in connecting the stator winding 101b and the output terminal of the power module 110b, and it is not necessary to route the wiring in a complicated path.

Further, since there is no path through which current flows simultaneously between the stator winding 101b and the output terminal of the power module 110b, such as the relationship between the positive bus bar 113b and the negative negative bus bar 113c, the bus bar (that is, the stator wiring member) It is impossible to reduce the inductance by devising the arrangement and shape of the 113d and the wiring member 113s). On the other hand, in the present embodiment, the wiring path connecting the stator winding 101b and the output terminal of the power module 110b is provided at a position radially outward from the rotating shaft 102a of the rotary electric machine 10. .. As described above, the rotation angle detection circuit IC 110a is arranged on the extension line of the rotation shaft 102a. Therefore, the wiring connecting the stator winding 101b and the output terminal of the power module 110b can be separated from the rotation angle detection circuit IC110a in terms of distance, so that the magnetic flux generated when a current flows through the wiring is the rotation angle. It can be made difficult to act on the detection circuit IC110a, and the magnetic flux noise can be further reduced.

In the present embodiment, the positive electrode bus bar 113b extends from the connection portion 113k side with the external connection terminal member 113u to the left and right around the rotation shaft 102a of the rotary electric machine 10, and is formed and arranged symmetrically. .. Further, the negative electrode bus bar 113c extends from the connection portion 113l side with the external connection terminal member 113v to the left and right around the rotation shaft 102a of the rotary electric machine 10, and is formed and arranged symmetrically.

In such a configuration, the difference between the shortest path and the longest path among the path lengths from the connection portion 113k of the positive electrode bus bar 113b to the three power modules 110b-1, 110b-2, 110b-3 can be reduced. The difference between the shortest path and the longest path among the path lengths from the connection portion 113l of the negative electrode bus bar 113c to the three power modules 110b-1, 110b-2, 110b-3 can be reduced. Therefore, according to the present embodiment, it is possible to reduce the difference in inductance and the difference in electrical resistance in each of the power modules 110b-1, 110b-2, 110b-3, thereby suppressing the surge voltage described above. And the magnetic flux noise can be further reduced.

Further, in the present embodiment, the external connection terminal member 113u for connecting the connection portion 113k of the positive electrode bus bar 113b to the positive electrode terminal of the power supply 2 and the connection portion 113l of the negative electrode bus bar 113c for connecting to the negative electrode terminal of the power supply 2 are connected. Both of the external connection terminal members 113v are arranged on the non-arranged region 116 side around the rotating shaft 102a of the rotary electric machine 10. In such a configuration, the positive electrode bus bar 113b and the negative electrode bus bar 113c are aligned with each other in substantially the entire area around the rotation shaft 102a of the rotary electric machine 10.

Therefore, according to the present embodiment, it is possible to cancel the self-inductance of the bus bars 113b and 113c over substantially the entire area around the rotation shaft 102a, thereby suppressing the surge voltage and reducing the magnetic flux noise. Can be further planned.

In the present embodiment, the positive electrode bus bar 113b has an opening 119b that opens on the side opposite to the non-arranged region 116 with respect to the rotating shaft 102a of the rotating electric machine 10, and the negative electrode bus bar 113c is a rotating electric machine. It has an opening 119c that opens on the side opposite to the non-dispersed region 116 with respect to the rotating shaft 102a of 10.

In such a configuration, the longest path among the path lengths from the connection portion 113k of the positive electrode bus bar 113b to the three power modules 110b-1, 110b-2, 110b-3 can be shortened, and the connection portion of the negative electrode bus bar 113c can be shortened. The longest path among the path lengths from 113l to the three power modules 110b-1, 110b-2, 110b-3 can be shortened. Therefore, according to the present embodiment, it is possible to reduce the difference in inductance and the difference in electrical resistance in each of the power modules 110b-1, 110b-2, 110b-3, thereby suppressing the surge voltage described above. And the magnetic flux noise can be further reduced.

In the present embodiment, the rotation angle detection circuit IC 110a, the microcomputer 110d as a control circuit, and the like are mounted on the control board 113a in which the notch 115 is formed in a part around the rotation shaft 102a. The control board 113a is arranged so that the notch 115 is located on the non-arranged region 116 side around the rotation shaft 102a. In such a configuration, it is possible to secure an arrangement space for the external connection terminal members 113u, 113v and the like to which the bus bars 113b and 113c are connected without affecting the arrangement of the power module 110b around the rotation shaft 102a. Further, since the control board 113a can be formed and arranged according to the mounting layout of the power module 110b around the rotating shaft 102a, a wide board area can be secured in the control board 113a to increase the mounting area of each element. Can be done.

In the present embodiment, both the positive electrode bus bar 113b and the negative electrode bus bar 113c are arranged radially inside with respect to each power module 110b. Further, as shown in FIGS. 4 and 7, the power supply terminal of the power module 110b is provided on the radial inside of the module housing, and the connection portions 113i and 113j of the positive electrode bus bar 113b and the negative electrode bus bar 113c are provided on the radial inside. It is connected.

Therefore, according to the present embodiment, it is possible to avoid the connection between the power supply terminal in the power module 110b and the output terminal connected to the outside in the radial direction. It is not necessary to arrange a plurality of positive electrode bus bars 113b or negative electrode bus bars 113c (particularly, negative electrode bus bars 113c) on the radial outer side of the power module 110b, and the number of parts thereof can be reduced. Can be done. Further, the total length of the bus bars 113b and 113c itself can be shortened as compared with the configuration in which both the positive electrode bus bar 113b and the negative electrode bus bar 113c are arranged radially outward with respect to each power module 110b, whereby the bus bar 113b can be shortened. , 113c self-inductance can be reduced. Further, the outer diameter of the control device 11 can be reduced.

In the present embodiment, the positive electrode bus bar 113b and the negative electrode bus bar 113c are arranged apart from each other in the radial direction with respect to the rotating shaft 102a of the rotary electric machine 10. Therefore, the total length of the control device 11 in the axial direction can be shortened.

In the present embodiment, the positive electrode bus bar 113b and the negative electrode bus bar 113c are integrated with the resin case member 111a and insert-molded into the case member 111a, and the positive electrode bus bar 113b and the negative electrode bus bar 113c are formed by the case member 111a. Insulated from each other. In such a configuration, the controller-integrated rotary electric machine 1 is provided with an insulating member by a case member 111a arranged between the positive electrode bus bar 113b and the negative electrode bus bar 113c. Therefore, according to the present embodiment, it is possible to secure the insulating property between the positive electrode bus bar 113b and the negative electrode bus bar 113c by using the case member 111a.

In the present embodiment, the positive electrode bus bar 113b and the negative electrode bus bar 113c are integrated with the resin case member 111a, and the resin member 114 is injected into the case member 111a. In such a configuration, the rotary electric machine 1 integrated with the control device has a case member 111a in which the positive electrode bus bar 113b and the negative electrode bus bar 113c are integrated, a microcomputer 110d, a power module 110b, and a rotation angle detection inside the case member 111a. It includes a resin member 114 injected with the circuit IC 110a housed therein.

Therefore, according to the present embodiment, the microcomputer 110d, the power module 110b, and the rotation angle detection circuit IC 110a housed inside the case member 111a can be securely fixed by using the resin member 114. Further, as compared with the configuration in which the resin member 114 is not injected into the case member 111a, the thermal resistance can be lowered, and the heat generating parts such as the power module 110b and the bus bars 113b and 113c can be easily dissipated and cooled easily. At the same time, it is possible to improve the environmental resistance of the element in the power module 110b and the like and the reliability against foreign matter intrusion.

In the present embodiment, the rotation angle detection circuit IC 110a is arranged so as to face the rotation angle detection magnet 105 fixed to the axial end of the rotation shaft 102a in the axial direction. The positive electrode bus bar 113b and the negative electrode bus bar 113c are each formed so that the rotation angle detection circuit IC 110a is arranged on a straight line passing through the central portion thereof. In such a configuration, the rotary electric machine 1 integrated with the control device is arranged vertically above the central portion of the positive electrode bus bar 113b and the negative electrode bus bar 113c, that is, on the extension line of the rotary shaft 102a, and rotates for detecting the rotation of the rotary electric machine 10. The angle detection circuit IC110a is provided.

Therefore, according to the present embodiment, the self-inductance exerted by the positive electrode bus bar 113b and the negative electrode bus bar 113c on the rotation angle detection circuit IC110a can be made uniform around the rotation shaft 102a, and the rotation angle detection circuit IC110a by the bus bars 113b and 113c can be equalized. It is possible to reduce the magnetic flux noise in.

(Transformed form)
In the above embodiment, the positive electrode bus bar 113b and the negative electrode bus bar 113c are formed and arranged so as to be separated from each other while maintaining a predetermined interval in the radial direction with respect to the rotation shaft 102a. However, the present invention is not limited to this. That is, the positive electrode bus bar 113b and the negative electrode bus bar 113c may be formed and arranged so as to be separated from each other while maintaining a predetermined distance in the axial direction with respect to the rotation shaft 102a. According to such a modification, the outer diameter of the control device 11 can be reduced.

Further, in the above embodiment, the positive electrode bus bar 113b sandwiches the rotating shaft 102a with a part of the rotating electric machine 10 around the rotating shaft 102a (specifically, the midpoint of the line segment connecting the two connecting portions 113k). The negative electrode bus bar 113c has an opening 119b that opens at a position opposite to the rotation shaft 102a of the rotary electric machine 10 (specifically, is opposite to the connection portion 113l with the rotation shaft 102a in between). It has an opening 119c that opens at the side position). However, the present invention is not limited to this. That is, only one of the positive electrode bus bar 113b and the negative electrode bus bar 113c is formed so as to have openings 119b and 119c, and the other is formed in an annular shape around the rotation shaft 102a so as not to have openings 119c and 119b. You may.

Further, in the above embodiment, the positive electrode bus bar 113b or the negative electrode bus bar 113c extends in an annular shape around the rotation shaft 102a. However, the present invention is not limited to this, and the positive electrode bus bar 113b or the negative electrode bus bar 113c may be divided into a plurality of parts in the circumferential direction. According to this modification, the total length of the rotary electric machine 1 integrated with the control device in the axial direction can be shortened.

Further, in the above embodiment, each power module 110b has two sets of upper and lower arm elements, and has a total of four switching elements 117 and a total of four diodes 118. However, the present invention is not limited to this, and one power module 110b may have one set of upper and lower arm elements, or may have three or more sets of upper and lower arm elements.

Further, in the above embodiment, the heat sink 112a for the power module is arranged on the rotary electric machine 10 side in the axial direction with respect to the power module 110b. However, the present invention is not limited to this. That is, as shown in FIG. 16, the heat sink 112a for the power module may be arranged on the side opposite to the rotary electric machine 10 in the axial direction with respect to the power module 110b. According to such a modification, the heat sink 112a for the power module can be easily cooled, so that the heat dissipation of the power module 110b can be improved.

Further, in the above embodiment, a smoothing circuit for smoothing a capacitor or the like is interposed between the positive electrode terminal and the negative electrode terminal of the power supply 2, that is, between the positive electrode power supply terminal and the negative electrode power supply terminal of the power module 110b. Absent. However, the present invention is not limited to this, and as shown in FIGS. 17 and 18, between the positive electrode terminal and the negative electrode terminal of the power supply 2, that is, between the positive electrode power supply terminal and the negative electrode power supply terminal of the power module 110b. The smoothing circuit 120 may be interposed and the control device 11 may have the smoothing circuit 120.

The smoothing circuit 120 is a device or circuit element having a power storage element capable of storing electric charges between electrodes. The smoothing circuit 120 has a capacitor (capacitor) such as an aluminum electrolytic capacitor or a multilayer capacitor formed in a substantially columnar shape. The smoothing circuit 120 is provided to smooth the voltage in the inverter circuit. The smoothing circuit 120 is provided with a total of four capacitors, for example, two on each side, corresponding to the case where the positive electrode bus bar 113b and the negative electrode bus bar 113c extend from the connection portions 113k and 113l to the left and right around the rotation axis 102a. There is. Hereinafter, the two capacitors arranged on the left side of the connection portions 113k and 113l facing the rotation shaft 102a side will be referred to as capacitors 120a, and will be represented by subscripts 1 and 2, respectively. Further, the two capacitors arranged on the right side of the connection portions 113k and 113l facing the rotation shaft 102a side are referred to as capacitors 120b, and are represented by subscripts 1 and 2, respectively.

The capacitors 120a and 120b are housed inside the case member 111a. The capacitor 120a and the capacitor 120b are arranged in a balanced manner on the left and right sides around the rotation shaft 102a sandwiching the connection portion 113k (specifically, the midpoint of the line segment connecting the two connection portions 113k). The capacitors 120a-1 and 120a-2 are arranged on the left side of the two connecting portions 113k with respect to the left connecting portion 113k in FIG. 18 around the rotation axis 102a, and are arranged side by side with each other. The capacitors 120b-1 and 120b-2 are arranged on the right side of the two connecting portions 113k with respect to the right connecting portion 113k in FIG. 18 around the rotation axis 102a, and are arranged side by side with each other.

One terminal of each of the capacitors 120a and 120b is connected to the positive electrode bus bar 113b, and the other terminal is connected to the negative electrode bus bar 113c. Specifically, the capacitor 120a-1 and the capacitor 120a-2 are connected in parallel between the right-handed positive electrode bus bar portion 113bR of the positive electrode bus bar 113b and the right-handed negative electrode bus bar portion 113cR of the negative electrode bus bar 113c. The capacitor 120b-1 and the capacitor 120b-2 are connected in parallel between the counterclockwise positive electrode bus bar portion 113bL of the positive electrode bus bar 113b and the counterclockwise negative electrode bus bar portion 113cL of the negative electrode bus bar 113c. Both terminals of the capacitors 120a-1 and 120b-1 are directly connected to the positive electrode bus bar 113b and the negative electrode bus bar 113c. Further, both terminals of the capacitors 120a-2 and 120b-2 are connected to the positive electrode bus bar 113b and the negative electrode bus bar 113c via the terminals of the capacitors 120a-1 and 120b-1.

The capacitor 120a is arranged near the connection portions 113k and 113l of the clockwise positive electrode bus bar portion 113bR and the clockwise negative electrode bus bar portion 113cR with the power supply 2, and is connected to the connection portions 113zb and 113zc of the bus bar portions 113bR and 113cR. .. The capacitor 120b is arranged near the connection portions 113k and 113l of the counterclockwise positive electrode bus bar portion 113bL and the counterclockwise negative electrode bus bar portion 113cL with the power supply 2, and is connected to the connection portions 113zb and 113zc of the bus bar portions 113bL and 113cL. .. The capacitors 120a and the capacitors 120b are arranged symmetrically on the left and right sides around the rotation shaft 102a with the connection portion 113k interposed therebetween. Specifically, the capacitors 120a-1 and the capacitors 120b-1 are arranged symmetrically on the left and right sides around the rotation axis 102a sandwiching the connection portion 113k, and the capacitors 120a-2 and 120b-2 Are arranged symmetrically on the left and right sides around the rotation axis 102a with the connection portion 113k interposed therebetween.

The total capacitance of the capacitance of the capacitor 120a-1 and the capacitance of the capacitor 120a-2 and the total capacitance of the capacitance of the capacitor 120b-1 and the capacitance of the capacitor 120b-2 are the same as each other. The capacitance of the capacitor 120a-1 and the capacitance of the capacitor 120b-1 are the same as each other. Further, the capacitance of the capacitor 120a-2 and the capacitance of the capacitor 120b-2 are the same as each other.

The capacitor 120a-1 is arranged on the side electrically closer to the connection portion 113k than the capacitor 120a-2. The capacity of the capacitor 120a-1 is larger than the capacity of the capacitor 120a-2. The capacitor 120b-1 is arranged on the side electrically closer to the connection portion 113k than the capacitor 120b-2. The capacitance of the capacitor 120b-1 is larger than the capacitance of the capacitor 120b-2. Both terminals of the capacitors 120a and 120b are potted with resin. The resin potting to both terminals of the capacitors 120a and 120b may be realized by using the resin member 114.

According to the configuration provided with the smoothing circuit 120, the ripple current flowing from the outside to the power supply path can be absorbed by the smoothing circuit 120, so that it is between the positive electrode terminal and the negative electrode terminal of the power supply 2, that is, the positive electrode of the power module 110b. The voltage between the power supply terminal and the negative electrode power supply terminal can be smoothed.

In this modified configuration, the portion where the positive electrode bus bar 113b and the negative electrode bus bar 113c extend along each other, specifically, the portion where the predetermined distance A is maintained in the radial direction between the positive electrode bus bar 113b and the negative electrode bus bar 113c is At least, the positive electrode power supply terminal and the negative electrode power supply of the power module 110b (specifically, the power module 110b-2 located farthest on the path from the connection portions 113k and 113l) from the connection portions 113zb and 113zc with the smoothing circuit 120. It suffices if it extends over the connection portions 113i and 113j with the terminals. That is, the positive electrode bus bar 113b and the negative electrode bus bar 113c are at least connected to the positive electrode power supply terminal and the negative electrode power supply terminal of the power module 110b (specifically, the power module 110b-2) from the connection portions 113zb and 113zc with the smoothing circuit 120. It suffices that the connecting portions 113i and 113j are formed and arranged so as to be spaced apart from each other while maintaining a predetermined interval A in the radial direction.

Positive electrode power supply terminal and negative electrode power supply terminal of the power module 110b (specifically, the power module 110b-2 located farthest on the path) from the connection portions 113zb, 113zc to the smoothing circuit 120 in the positive electrode bus bar 113b and the negative electrode bus bar 113c. If a predetermined interval A is maintained in the radial direction at the portion extending to the connection portions 113i and 113j, the smoothing circuit 120 suppresses the voltage fluctuation between the positive electrode bus bar 113b and the negative electrode bus bar 113c, and the positive electrode bus bar 113b and Currents in opposite directions can be passed through the negative electrode bus bar 113c. Therefore, according to the configuration of this modified form, the effect of reducing the inductance generated inside the rotary electric machine 10 can be ensured.

In this modified form, in the positive electrode bus bar 113b and the negative electrode bus bar 113c, at least the connection portions 113zb and 113zc with the smoothing circuit 120 to the power module 110b (specifically, the power module 110b located farthest on the path-. It is sufficient that the portions of the connection portions 113i and 113j between the positive electrode power supply terminal and the negative electrode power supply terminal of 2) maintain a predetermined interval A in the radial direction, and are connected to other portions (for example, the smoothing circuit 120). A predetermined interval A may also be maintained in the radial direction (such as a portion extending from the portions 113 zb and 113 zc to the connecting portions 113 k and 113 l). On the contrary, the connection portions 113zb and 113zc with the smoothing circuit 120 are connected to the positive electrode power supply terminal and the negative electrode power supply terminal of the power module 110b (specifically, the power module 110b-2 located farthest on the path). Even in the parts extending over the parts 113i and 113j, if the self-inductance canceling action by the mutual inductance works sufficiently, the part where the predetermined distance A is not maintained in the radial direction, that is, the part where the separation distance is smaller or larger than the predetermined distance A. May be included in a part.

Further, in the above embodiment, the positive electrode bus bar 113b and the negative electrode bus bar 113c are arranged apart from each other in the radial direction with respect to the rotating shaft 102a of the rotary electric machine 10, and specifically, the positive electrode bus bar 113b is arranged with respect to the negative electrode bus bar 113c. It is arranged radially inside. However, the present invention is not limited to this, and as shown in FIG. 19, the negative electrode bus bar 113c may be arranged radially inside the positive electrode bus bar 113b.

A fluid path through which a fluid for cooling or the like flows may be formed in the control device 11 near the rotation shaft 102a of the rotary electric machine 10 (that is, inside in the radial direction) (particularly, see FIG. 16). Assuming that the positive electrode bus bar 113b is arranged radially inside the negative electrode bus bar 113c and the positive electrode bus bar 113b is exposed in the fluid path, when an object such as metal flows through the fluid path, It may come into contact with the positive electrode bus bar 113b and cause an unexpected short circuit. On the other hand, according to the configuration in which the negative electrode bus bar 113c is arranged radially inside the positive electrode bus bar 113b as described above, even if the negative electrode bus bar 113c is exposed in the fluid path, the negative electrode bus bar 113c Since the electric potential of the vehicle body is the same as the electric potential of the vehicle body, a short circuit is unlikely to occur even when an object such as metal flows through the fluid path and comes into contact with the negative electrode bus bar 113c, and safety can be improved.

Further, in the above embodiment, the notch 115 is provided in a part of the control board 113a around the rotation shaft 102a. However, the present invention is not limited to this, and may be applied to the control board 113a in which the above-mentioned notch 115 is not provided. Further, in the above embodiment, a non-dispersion region 116 in which the power module 110b is not disposed is provided in a part around the rotation shaft 102a of the rotary electric machine 10, and the non-dispersion region 116 and the control board 113a are provided. The external connection terminal members 113u and 113v are arranged so as to correspond to the notch 115 of the above and to correspond to the non-arranged region 116 and the notch 115. However, the present invention is not limited to this, and the external connection terminal members 113u and 113v may be applied to those that are arranged regardless of the position or presence of the non-arranged region 116 or the notch 115.

Further, in the above embodiment, an example is given in which the rotor 102 of the rotary electric machine 10 includes a rotor winding 102c that forms a magnetic pole when a current flows. However, the present invention is not limited to this. That is, a magnet may be provided instead of the rotor winding 102c. In such a configuration, the slip ring 103 and the brush 104 are not required, and the field circuit IC 110c of the control device 11 is also unnecessary, so that the configuration can be simplified.

Further, in the above embodiment, two sets of stator windings 101b provided in the stator 101 of the rotary electric machine 10 are provided. That is, two sets of stator windings 101b-1 and 101b-2 are arranged with respect to one rotary electric machine 10 with a predetermined electrical angle deviation. However, the present invention is not limited to this, and may be applied to a rotary electric machine 10 provided with two separate and independent ones. That is, it is assumed that two rotary electric machines 10 are provided, and each rotary electric machine 10 has a housing 100, a stator 101, a rotor 102, a slip ring 103, a brush 104, and a magnet for detecting a rotation angle. It may be provided with 105. That is, one stator winding 101b may be arranged for each of the two rotary electric machines 10. In this modification, it is preferable that the shaft of the rotor 102 of one rotary electric machine and the shaft of the rotor 102 of the other rotary electric machine are arranged coaxially.

1 ... Control device integrated rotary electric machine, 2 ... Power supply, 10 ... Rotating electric machine, 11 ... Control device, 101b ... Stator winding, 102a ... Rotating shaft, 110a ... -Rotation angle detection circuit IC, 110b, 110b-1, 110b-2, 110b-3 ... Power module, 110d ... Microcomputer, 111a ... Case member, 111b, 111c ... Fixing member, 112a ... Power module heat sink, 112b ... Field circuit IC heat sink, 112c ... Microcomputer heat sink, 113a ... Control board, 113b ... Positive bus bar, 113c ... Negative bus bar, 113d ... Stator wiring member, 113s ... Wiring member, 113u, 113v ... External connection terminal member, 114 ... Resin member, 115 ... Notch, 116 ... Non-dispersed area 117 ... switching element, 118 ... diode, 119b, 119c ... opening, 120 ... smoothing circuit, 120a, 120b ... capacitor, A ... predetermined interval.

Claims (15)

Rotating electric machine (10) and
A control circuit (110d) for controlling the rotary electric machine, a plurality of switching element modules (110b) arranged around the rotary shaft (102a) of the rotary electric machine, and each of them controlled by the control circuit, and the switching element module. The positive electrode bus bar (113b) that connects the positive electrode power supply terminal of the above to the first external connection terminal member (113u) and the negative electrode bus bar (113c) that connects the negative electrode power supply terminal of the switching element module to the second external connection terminal member (113v). And the control device (11) having
It is a rotary electric machine (1) with an integrated control device, which is equipped with
Both the positive electrode bus bar and the negative electrode bus bar are arranged radially inside the switching element module.
The positive electrode bus bar and the negative electrode bus bar are formed and arranged so as to be aligned with each other while being separated from each other while maintaining a predetermined interval (A) .
The control device has wiring members (113d, 113s) arranged radially outside the switching element module to connect the output terminal of the switching element module to the stator winding (101b) of the rotary electric machine. Have and
The positive electrode power supply terminal and the negative electrode power supply terminal are each provided inside the switching element module in the radial direction.
The output terminal is a controller-integrated rotary electric machine provided on the outer side in the radial direction of the switching element module . Wherein the control device, with one terminal connected between the connecting portion of the connecting portion between the first external connection terminal members in the positive electrode bus bar and (113k) and before KiTadashi electrode power terminal (113i), the other terminal is connected between the connecting portion of the connecting portion between the second external connection terminal member in the negative electrode bus bar and (113l) and before Kimake electrode power terminal (113j), smoothing of voltage It has a smoothing circuit (120, 120a, 120b) and has
The positive electrode bus bar and the negative electrode bus bar are separated from each other from the connection portion (113 zb, 113 zc) with the smoothing circuit to the connection portion with the power supply terminal of the switching element module while maintaining the predetermined interval. The controller-integrated rotary electric machine according to claim 1, which is formed and arranged so as to be aligned with each other. The controller-integrated rotary electric machine according to claim 1 or 2, wherein the positive electrode bus bar and the negative electrode bus bar are formed in a plate shape, respectively. The positive electrode bus bar extends from the connection portion side with the first external connection terminal member to the left and right around the rotation axis of the rotary electric machine.
The control device integrated rotary electric machine according to any one of claims 1 to 3 , wherein the negative electrode bus bar extends from the connection portion side with the second external connection terminal member to the left and right around the rotation axis of the rotary electric machine. .. At least one of the positive electrode bus bar and the negative electrode bus bar is located on the left and right sides of the rotation axis of the rotary electric machine from the connection portion side with the first external connection terminal member or the connection portion side with the second external connection terminal member. The controller-integrated rotary electric machine according to any one of claims 1 to 4 , which is extended and symmetrically formed and arranged. A plurality of the switching element modules are arranged so that a non-arranged region (116) is partially provided around the rotation axis of the rotary electric machine.
The control according to any one of claims 1 to 5 , wherein at least the first external connection terminal member or the second external connection terminal member is arranged on the non-dispersed region side around the rotation axis of the rotary electric machine. Device-integrated rotary electric machine. The control device integrated rotary electric machine according to claim 6, wherein the positive electrode bus bar or the negative electrode bus bar has an opening (119b, 119c) that opens on the side opposite to the non-dispersed region with respect to the rotation axis of the rotary electric machine. .. The control circuit is mounted on a control board (113a) in which a notch (115) is formed in a part around the rotation axis of the rotary electric machine.
The control device integrated rotary electric machine according to claim 6 or 7 , wherein the control board is arranged so that the notch is located on the non-dispersed region side around the rotation axis of the rotary electric machine. The control device-integrated rotary electric machine according to any one of claims 1 to 8 , wherein the positive electrode bus bar and the negative electrode bus bar are arranged apart from each other in the radial direction with respect to the rotation axis of the rotary electric machine. The controller-integrated rotary electric machine according to claim 9 , wherein the negative electrode bus bar is arranged radially inside the positive electrode bus bar. The control device integrated rotary electric machine according to any one of claims 1 to 8 , wherein the positive electrode bus bar and the negative electrode bus bar are arranged apart from each other in the axial direction with respect to the rotation axis of the rotary electric machine. The controller-integrated rotary electric machine according to any one of claims 1 to 11 , further comprising an insulating member (111a) disposed between the positive electrode bus bar and the negative electrode bus bar. A resin case (111a) in which the positive electrode bus bar and the negative electrode bus bar are integrated,
A resin member (114) injected with the control circuit and the switching element module housed inside the resin case, and
The control device integrated rotary electric machine according to any one of claims 1 to 12 . The control device integrated rotary electric machine according to any one of claims 1 to 12 , further comprising a rotation detection sensor (110a) for detecting the rotation of the rotary electric machine, which is arranged on an extension line of the rotation axis of the rotary electric machine. A resin case (111a) in which the positive electrode bus bar and the negative electrode bus bar are integrated,
A resin member (114) injected with the control circuit, the switching element module, and the rotation detection sensor housed inside the resin case.
14. The controller-integrated rotary electric machine according to claim 14 .

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