WO2021240579A1

WO2021240579A1 - Rotor of rotary electric machine and rotary electric machine

Info

Publication number: WO2021240579A1
Application number: PCT/JP2020/020480
Authority: WO
Inventors: 勇気日高; 大河小松; 秀哲有田; 浩司川村
Original assignee: 三菱電機株式会社
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-12-02
Also published as: JP6827600B1; JPWO2021240579A1

Abstract

A rotor (30) of a rotary electric machine (100), including a shaft (31), a rotor core (35) provided on the shaft (31), and annular shaft end components (38) provided at both ends of the rotor core (35) in an axial direction and holding the rotor core (35) at both of the ends in the axial direction, wherein a first shaft end component (38), which is a shaft end component (38) provided on the shaft (31) and close to a terminal portion (36) for receiving power from the outside, includes guide portions (38h1, 38r2) that guide lead wires (W, WB) electrically connecting the terminal portion (36) and connection target components (37, S) protruding upward in the axial direction from the rotor core (35).

Description

Rotor of rotary electric machine and rotary electric machine

This application relates to a rotor of a rotary electric machine and a rotary electric machine.

Conventionally, a rotor core having a plurality of teeth portions protruding outward in the radial direction from the shaft, a rotor winding wound around each of the plurality of teeth portions, and axially protruding from the rotor core. A rotor of a rotary electric machine in which a fixed ring member for accommodating a coil end portion of a rotor winding is arranged is known (see, for example, Patent Document 1).

WO 2015/181895

However, the conventional rotor does not have a power supply path from the external drive circuit to the rotor winding, and for example, the fixed ring member is not provided with a lead wire guide connected to the rotor winding. Therefore, there is a problem that the quality of the lead wire from the external drive circuit is not uniform among the products and the productivity is poor.

The present application discloses a technique for solving the above-mentioned problems, in which the lead wire from the external drive circuit can be easily routed, the quality of the product can be made uniform, and the rotation of a rotating electric machine with high productivity can be performed. It is intended to provide a child and a rotary electric machine.

The rotor of the rotary electric machine disclosed in the present application is
The shaft, the rotor core provided on the shaft, and
A rotor of a rotary electric machine provided at both ends of the rotor core in the axial direction and having an annular shaft end component for holding the rotor core from both sides in the axial direction.
The first shaft end component, which is the shaft end component provided on the shaft and is close to the terminal portion to receive power from the outside, is a connection target that projects upward in the axial direction from the terminal portion and the rotor core. It has a guide unit that guides the lead wire that electrically connects to the component.
Further, the rotary electric machine disclosed in the present application is a rotary electric machine.
With the rotor of the rotary electric machine,
With a stator core and a stator consisting of a stator winding,
The rotor has an outer peripheral surface facing the inner peripheral surface of the stator and is rotatably supported via a gap.

According to the rotor of the rotary electric machine and the rotary electric machine disclosed in the present application, it is easy to route the lead wire from the external drive circuit, the quality of the product can be made uniform, and the rotor and the rotary electric machine of the rotary electric machine with high productivity. Can be provided.

It is a perspective view of the rotary electric machine according to Embodiment 1. FIG. It is sectional drawing of the rotary electric machine according to Embodiment 1. FIG. It is a perspective view of the stator according to Embodiment 1. FIG. It is a perspective view of the rotor according to Embodiment 1. FIG. It is a perspective view which shows the rotor which removed the shaft end component from FIG. It is a perspective view which shows the rotor excluding the rotor winding from FIG. It is a perspective view of the rotor core which wound the rotor winding by Embodiment 1. FIG. It is a perspective view of the shaft end component according to the first embodiment, and is the view which saw the shaft end component from the rotor core side. It is operation circuit diagram of the rotary electric machine according to Embodiment 1. FIG. It is sectional drawing of the rotary electric machine of another example by Embodiment 1. FIG. It is operation circuit diagram of the rotary electric machine of another example by Embodiment 1. FIG. FIG. 5 is a perspective view showing an insulating component for a permanent magnet and a rotor winding of a rotary electric machine according to a second embodiment. It is a top view of the shaft end component of the rotary electric machine according to Embodiment 3. FIG. It is sectional drawing of the rotary electric machine according to Embodiment 4. FIG. It is a top view of the connection board of the rotary electric machine according to Embodiment 4. FIG. It is sectional drawing of the rotary electric machine according to Embodiment 5. It is a perspective view of the rotor of the rotary electric machine according to Embodiment 6. It is a top view of the shaft end component according to Embodiment 7. It is a top view of the shaft end component according to Embodiment 7. It is sectional drawing of the rotary electric machine according to Embodiment 8. FIG.

Embodiment 1.
Hereinafter, the rotor of the rotary electric machine and the rotary electric machine according to the first embodiment will be described with reference to the drawings.
Each figure illustrates the elements necessary to explain the present embodiment, and does not necessarily show all the elements of the actual product.

Further, in the present specification, the terms "axial direction", "circumferential direction", and "diameter direction" mean the "axial direction", "circumferential direction", and "diameter direction" of the rotor, respectively, without particular notice. And.

In addition, when referring to "upper" and "lower" in this specification without particular notice, a plane perpendicular to the axial direction is assumed at the reference location, and the center point of the rotor is set with that plane as the boundary. The included side is "bottom" and the opposite is "top".

Also, "fixing" is any fixing method as long as the object can be fixed, and the fixing method does not matter. "Equal" means that they are almost the same, and if they differ within the range of dimensional tolerances, they are considered to have the same function.

FIG. 1 is a perspective view of the rotary electric machine 100.
FIG. 2 is a cross-sectional view of the rotary electric machine 100, which is a view obtained by cutting the rotary electric machine 100 in a plane including the axis of the rotor 30.
Examples of the rotary electric machine 100 include an AC generator motor for vehicles. The rotary electric machine 100 includes a stator 20 composed of a stator core 21 and a stator winding 22, and a rotor 30 having an outer peripheral surface facing the inner peripheral surface of the stator 20 and rotatably supported via a gap. It is equipped with.

The stator 20 is fixed to a front bracket (not shown) and a rear bracket (not shown).

FIG. 3 is a perspective view of the stator 20.
The stator 20 includes a stator core 21 and a plurality of stator windings 22 provided on the stator core 21 as described above. The stator core 21 is formed in an annular shape. The plurality of stator windings 22 project from the inner peripheral surface of the stator core 21 toward the inside in the radial direction X, and are wound around the teeth portions arranged at equal intervals in the circumferential direction Y.

FIG. 4 is a perspective view of the rotor 30.
FIG. 5 is a perspective view showing the rotor 30 from which the shaft end component 38 is removed from FIG.
FIG. 6 is a perspective view showing the rotor 30 excluding the rotor winding 37 from FIG.
FIG. 7 is a perspective view of the rotor core 35 around which the rotor winding 37 is wound.
The rotor 30 is provided on the shaft 31, the bearing 32 provided on the shaft 31, the resolver rotor 33 provided for measuring the rotational position of the rotor 30, and used together with the resolver stator (not shown), and the shaft 31. The slip ring 34 and the rotor core 35 provided on the shaft 31 are provided.

The shaft 31 is rotatably supported by the above-mentioned front bracket and rear bracket via a bearing 32. The slip ring 34 is connected to an external drive power supply (external drive circuit) connected to the outside of a front or rear bracket (not shown). Therefore, the position in the axial direction Z is arranged farther from the rotor core 35 than the bearing 32 that is in contact with the front or rear bracket.

Further, the rotor 30 is provided with a brush (not shown) that comes into contact with the slip ring 34. The external drive power supply supplies electric power to the rotor winding 37 provided in the rotor 30 via the terminal portion 36 by bringing a brush (not shown) into contact with the slip ring 34. That is, the slip ring 34 is also electrically connected to the terminal portion 36.

The rotor core 35 is formed in a cylindrical shape, the radial direction X of the rotor core 35 coincides with the radial direction X of the rotor 30, and the axial direction Z of the rotor core 35 is the axis of the rotor 30. It coincides with the direction Z, and the circumferential direction Y of the rotor core 35 coincides with the circumferential direction Y of the rotor 30.

At both ends of the rotor core 35 in the axial direction Z, annular shaft end parts 38 for contacting the rotor core 35 and holding the rotor core 35 from both sides in the axial direction Z are arranged. ..

As shown in FIGS. 5 to 7, the rotor core 35 is provided with eight pairs of coil insertion holes 35h1 penetrating in the axial direction Z. A rotor winding 37 is wound around each of the pair of coil insertion holes 35h1. Electric power is supplied to the rotor winding 37 from the outside via the slip ring 34 and the terminal portion 36.

As shown in FIG. 6, two magnet insertion holes 35h2, two in total, are provided between the pair of coil insertion holes 35h1 so as to penetrate in the axial direction Z, and are permanently inserted in the magnet insertion holes 35h2. The magnet MG is inserted. The permanent magnet MG is magnetized in the same direction as the magnetic flux generated by the current flowing through the rotor winding 37 to form a rotor magnetomotive force. The coil end portion 37e is a portion of the rotor winding 37 that protrudes from the pair of coil insertion holes 35h1 to the outside of the rotor core 35.

FIG. 8 is a perspective view of the shaft end component 38, and is a view of the shaft end component 38 as viewed from the rotor core 35 side.
The shaft end component 38 is provided with a coil end accommodating portion 38r1 which is a groove provided in an annular shape so as to include the rotor winding 37. The coil end portion 37e of the rotor winding 37 is covered on both sides in the radial direction X and above the axial direction Z by the coil end accommodating portion 38r1.

Further, the shaft end component 38 (first shaft end component) on the side close to the terminal portion 36 is provided with a guide groove portion 38r2 (guide portion) that extends in the radial direction X and is recessed on the upper side in the axial direction Z. The guide groove portion 38r2 guides the lead wire W shown in FIG. 2 so as to extend from the rotor winding 37 to the terminal portion 36. For example, when the terminal portions 36 are provided at two locations corresponding to the + -potential, the guide groove portions 38r2 are also provided at two locations symmetrical with respect to the shaft 31.

The guide groove portion 38r2 is not limited to the case where the groove is machined as shown in FIG. 8, and the guide portion may be provided with a space capable of guiding the lead wire W. For example, the same function can be obtained even if the hole penetrates the shaft end component 38 in the axial direction Z as in the guide hole portion 38h1 shown in FIG. 8 (as in the guide hole portion 38h1 in FIG. 8). The intention is that the guide part may be provided only by drilling holes).

As shown in FIG. 2, when the guide groove portion 38r2 is used, the lead wire W extending from the end portion (connection target component) of the rotor winding 37 is connected to the terminal portion 36 through the guide groove portion 38r2. .. When the guide hole portion 38h1 is used, the lead wire W is drawn out through the guide hole portion 38h1 in the axial direction Z and is connected to the terminal portion 36.

Next, the operation of the rotary electric machine 100 will be described. First, a case where the rotary electric machine 100 operates as an electric machine will be described.
FIG. 9 is an operation circuit diagram of an AC generator motor as a rotary electric machine 100.
DC current is supplied from the battery BA to the power circuit unit PC via the power supply terminal. The control circuit unit CC controls ON / OFF of each switching element PC1 of the power circuit unit PC. As a result, the power circuit unit PC converts the direct current into an alternating current. The converted alternating current is supplied to the stator winding 22 of the stator 20.

On the other hand, a direct current is supplied to the rotor winding 37 based on a command from the control circuit unit CC. A drive torque is generated by interlinking the magnetic flux generated by the rotor winding 37 and the magnetic flux generated by the magnetic flux generated by the permanent magnet MG with the alternating current flowing through the stator winding 22. The generated drive torque causes the rotor 30 to rotate with respect to the stator 20.

Next, a case where the rotary electric machine 100 operates as a generator will be described. When the engine is being driven, the rotational torque of the engine is transmitted from the crankshaft to the shaft 31 via mechanical connection parts such as belts and gears. As a result, the rotor 30 rotates with respect to the stator 20.

A direct current is supplied to the rotor winding 37 based on a command from the control circuit unit CC. A three-phase AC voltage is induced in the stator winding 22 by interlinking the magnetic flux generated by the rotor winding 37 and the magnetic flux generated by the permanent magnet MG with the stator winding 22. As a result, an alternating current is supplied to the power circuit unit PC. The control circuit unit CC controls ON / OFF of each switching element PC1 of the power circuit unit PC. As a result, the power circuit unit PC converts the alternating current into the direct current. The converted direct current is supplied to the battery BA. As a result, the battery BA is charged.

When the rotary electric machine 100 operates as an electric motor and a generator, it is not always necessary to supply a current to the rotor winding 37. The rotary electric machine 100 can operate as an electric motor and a generator by using only the magnetic flux generated by the permanent magnet MG.

According to the rotary electric machine 100 and the rotor 30 of the rotary electric machine 100 according to the first embodiment, the guide groove portion 38r2 or the guide that guides the lead wire W connecting the terminal portion 36 and the rotor winding 37 to the shaft end component 38. By providing the hole portion 38h1 (both are guide portions within the scope of the patent claim), it is possible to secure a connection path between the rotor winding 37 and the terminal portion 36. As a result, the lead wire W from the terminal portion 36 can be easily routed, the quality of the product can be made uniform, and the rotor 30 and the rotary electric machine 100 of the rotary electric machine having high productivity can be provided.

Further, since the coil end portion 37e of the rotor winding 37 is arranged so as to be covered with the coil end accommodating portion 38r1 of the shaft end component 38, the rotor winding 37 and the rotor winding 37 generated by the rotational centrifugal force of the rotor 30 are generated. The shear stress between the rotor cores 35 can be suppressed.

Further, the laminated rotor core 35 can be held from both sides in the axial direction Z by the shaft end component 38. In this way, one shaft end component 38 can realize three functions.

FIG. 10 is a cross-sectional view of the rotary electric machine 100B, which is a view obtained by cutting the rotary electric machine 100B in a plane including the axis of the rotor 30B.
FIG. 11 is an operation circuit diagram of the rotary electric machine 100B.
An example of utilizing the guide groove portion 38r2 or the guide hole portion 38h1 as a guide portion for the lead wire W of the rotor winding 37 has been described so far, but for example, the rotary electric machine 100B having no rotor winding provided. The same function can be obtained for the rotor 30B.
For example, as shown in FIG. 10, the lead wire WB of the analog sensor S (connection target component) such as temperature attached to the permanent magnet MG may be connected to the terminal portion 36 via the guide groove portion 38r2. can.

In this case, the temperature of the permanent magnet MG is measured by connecting the analog voltage value acquired by the analog sensor S to an external circuit (external drive circuit) via the terminal portion 36 and the slip ring 34. However, since the rotor winding is not provided in the rotor 30B, the operating circuit is a circuit excluding the power supply path to the rotor winding 37 from the operating circuit of FIG. 9, as shown in FIG. It becomes. In this operation circuit, the circuit other than the circuit for supplying electric power to the rotor winding 37 operates in the same manner as in FIG.

Embodiment 2.
Hereinafter, the rotor of the rotary electric machine and the rotary electric machine according to the second embodiment will be described with reference to the drawings.
FIG. 12 is a perspective view showing an insulating component 60 for the permanent magnet MG and the rotor winding 37 of the rotary electric machine according to the second embodiment.
The rotor winding 37 is wound around the permanent magnet MG via the insulating component 60. Other configurations are the same as those in the first embodiment.

According to the rotor of the rotary electric machine and the rotary electric machine according to the second embodiment, the rotor winding 37 is wound so as to cover the periphery of the permanent magnet MG via the insulating component 60. As a result, the permanent magnet MG is held by the rotor winding 37 from both sides in the axial direction Z and from both sides in the circumferential direction Y. Since the rotor winding 37 is held by the coil end accommodating portion 38r1 of the shaft end component 38, as a result, the permanent magnet MG is indirectly held by the shaft end component 38. Therefore, it is possible to obtain a function of holding both the rotor winding 37 and the permanent magnet MG with one shaft end component 38.

Further, the insulating component 60 also has a function of lowering the thermal resistance from the permanent magnet MG to the outside air because the heat generated in the permanent magnet MG can be passed to the shaft end component 38 via the rotor winding 37. ing. As a result, there is an effect of suppressing thermal demagnetization of the permanent magnet MG.

Embodiment 3.
Hereinafter, the rotor of the rotary electric machine and the rotary electric machine according to the third embodiment will be described with reference to the drawings.
FIG. 13 is a plan view of the shaft end component 338 of the rotary electric machine according to the third embodiment, and is a view of the shaft end component 338 as viewed from the rotor core 35 side.
The shaft end component 338 includes a resin injection hole 338h3. In FIG. 13, a resin injection hole 338h3 having the same shape is provided at the same position as the guide hole portion 38h1 of the first embodiment.
Inside the rotor 30, resin is injected from the resin injection hole 338h3 so as to fill the space between the rotor core 35, the permanent magnet MG, and the rotor winding 37.

The resin injection holes 338h3 are provided at two locations 180 degrees apart in the circumferential direction Y so as to correspond to the inlet and the outlet for injecting the resin. Further, the resin injection hole 338h3 may also serve as the guide hole portion 38h1 described in the first embodiment, and the configuration for injecting the resin and the heat generated in the lead wire W are transferred to the shaft end component via the resin. It may be a form compatible with a configuration that allows it to escape to 338.

According to the rotor of the rotary electric machine and the rotary electric machine according to the third embodiment, the resin injection holes 338h3 for injecting the resin into the shaft end component 338 are provided at two positions symmetrical with respect to the shaft 31. , The rotor core 35, the permanent magnet MG and the rotor winding 37 are mutually fixed by the resin, and the influence of vibration during rotation of the rotor can be minimized.

Further, since the rigidity of the rotor core 35, the permanent magnet MG and the rotor winding 37 is increased, the centrifugal force resistance strength of the rotor can be increased. In addition, the heat generated by energizing the rotor winding 37 can be passed to the rotor core 35 and dissipated to the outside via the shaft 31, so that the thermal durability of the rotor can be significantly improved.

Embodiment 4.
Hereinafter, the rotor of the rotary electric machine and the rotary electric machine according to the fourth embodiment will be described with reference to the drawings.
FIG. 14 is a cross-sectional view of the rotary electric machine 400, which is a view obtained by cutting the rotary electric machine 400 in a plane including the axis of the rotor 430.
FIG. 15 is a plan view of the connection board 50 of the rotary electric machine 400.
For example, a connection board 50 as shown in FIG. 15 is arranged between the rotor core 35 and the shaft end component 38 (first shaft end component), and the connection board 50 is arranged in the circumferential direction Y of the rotor core 35. A plurality of pins 51 for holding the crossover wire 52 between the rotor windings 37 arranged in the plurality of pins 51 are provided. From the end of the rotor winding 37, the lead wire W passes through the guide groove portion 38r2 and is connected to the terminal portion 36 via the connection board 50 so that the connection board 50 is covered with the shaft end component 38. It is arranged in and attached to the shaft 31.

According to the rotor 430 of the rotary electric machine 400 and the rotary electric machine 400 according to the fourth embodiment, the connection board 50 forming the crossing wire of the rotor winding 37 is provided at the shaft end portion of the rotor 430, and the connection is made. The board 50 is attached to the shaft 31 so as to be covered with the shaft end component 38.

As a result, the inlet line and the exit line of the rotor winding 37 are held by using the plurality of pins 51 arranged on the connection board 50, so that the plurality of rotor windings 37 arranged in the circumferential direction Y are held. The process of forming the crossing line becomes easy. Further, since the connection board 50 is arranged so as to be covered with the shaft end component 38, it is possible to simultaneously hold the rotor winding 37, the permanent magnet MG, and the connection board 50 with one shaft end component 38.

Embodiment 5.
Hereinafter, the rotor of the rotary electric machine and the rotary electric machine according to the fifth embodiment will be described with reference to the drawings.
FIG. 16 is a cross-sectional view of the rotary electric machine 500, which is a view obtained by cutting the rotary electric machine 500 in a plane including the axis of the rotor 530.
The shaft end component 538 is integrally formed with the slip ring holding component 34HLD that holds the slip ring 34. Other configurations of the shaft end component 538 are the same as the configuration of the shaft end component 38 described in the first embodiment.

According to the rotor 530 of the rotary electric machine 500 and the rotary electric machine 500 according to the fifth embodiment, since the slip ring holding component 34HLD on which the slip ring 34 is arranged and the shaft end component 538 are integrally formed, the slip ring 34 is formed. The function of holding the rotor winding 37 and the function of holding the permanent magnet MG can be compatible with each other.

Further, since the slip ring holding component 34HLD is connected to an external circuit via a brush, the heat generated in the rotor winding 37 and the permanent magnet MG is allowed to flow to the outside via the slip ring holding component 34HLD. Can be done. As a result, the heat resistance of the rotor winding 37 and the permanent magnet MG can be improved.

Embodiment 6.
Hereinafter, the rotor of the rotary electric machine and the rotary electric machine according to the sixth embodiment will be described with reference to the drawings.
FIG. 17 is a perspective view of the rotor 630 of the rotary electric machine according to the sixth embodiment. The shaft end component 638 is integrally configured with a fan 638F that generates cooling air when the rotor 630 rotates. Other configurations of the shaft end component 638 are the same as the configuration of the shaft end component 38 described in the first embodiment.

According to the rotor 630 of the rotary electric machine and the rotary electric machine according to the sixth embodiment, since the shaft end component 638 and the cooling fan 638F are integrally configured, the function of cooling the rotor 630 and the rotor winding are performed. The function of holding the 37 and the permanent magnet MG can be compatible with each other.

Further, since the heat of the permanent magnet MG and the permanent magnet winding 37 held by the shaft end component 638 can be passed to the outside through the fan 638F, the heat resistance of the rotor winding 37 and the permanent magnet MG is greatly improved. Can be improved.

Embodiment 7.
Hereinafter, the rotor of the rotary electric machine and the rotary electric machine according to the seventh embodiment will be described with reference to the drawings.
FIG. 18A is a plan view of the shaft end component 338.
FIG. 18B is a plan view of the shaft end component 738.
The shaft end component 338 shown in FIG. 18A has the same configuration as the shaft end component described in the third embodiment.
The shaft end component 738 shown in FIG. 18B is configured not to have a resin injection hole.
In the seventh embodiment, the shaft end component 338 is used on one side in the axial direction Z, and the shaft end component 738 is used on the other side in the axial direction Z.

In order to increase the heat resistance of the rotor, it is desirable to use a resin with low viscosity and high fluidity. According to the rotor of the rotary electric machine according to the seventh embodiment and the rotary electric machine, when the rotor is filled with the resin, the resin is injected from the resin injection hole 338h3 of the shaft end component 338 on one side in the axial direction Z. Since it is necessary to prevent the resin from leaking from the shaft end component 738 on the other side, the resin filling step in the rotor becomes easy by using this configuration.

Embodiment 8.
Hereinafter, the rotor of the rotary electric machine and the rotary electric machine according to the eighth embodiment will be described with reference to the drawings.
FIG. 19 is a cross-sectional view of the rotary electric machine 800, which is a view obtained by cutting the rotary electric machine 800 in a plane including the axis of the rotor 830.
The shaft end component 838 (second shaft end component) provided on the right side of the paper surface in FIG. 19 (the side opposite to the shaft end component 38 in the axial direction Z) is integrally formed with the shaft 831.
According to the rotor 830 and the rotary electric machine 800 of the rotary electric machine 800 according to the eighth embodiment, since the shaft end component 838 and the shaft 831 on the side where the lead wire W does not need to be routed are integrally formed, the shaft 831 is used. It is possible to achieve both the rotational support of the rotor 830 and the holding function of the rotor winding 37 and the permanent magnet MG by the shaft end component 838.

Further, since the heat generated in the rotor winding 37 and the permanent magnet MG is configured to flow to the outside air via the shaft end component 838 and the shaft 831, the heat resistance of the rotor winding 37 and the permanent magnet MG is high. Can be improved.

Although the present application describes various exemplary embodiments and examples, the various features, embodiments, and functions described in one or more embodiments are applications of a particular embodiment. It is not limited to, but can be applied to embodiments alone or in various combinations.
Therefore, innumerable variations not exemplified are envisioned within the scope of the techniques disclosed in the present application. For example, it is assumed that at least one component is modified, added or omitted, and further, at least one component is extracted and combined with the components of other embodiments.

100,100B, 400,500,800 Rotor, 20 stator, 21 stator core, 22 stator winding, 30,30B, 430,530,630,830 rotor, 31,831 shaft, 32 bearing, 33 Resolver rotor, 34 slip ring, 34HLD slip ring holding part, 35 rotor core, 35h1 coil insertion hole, 35h2 magnet insertion hole, 36 terminal part, 37 rotor winding, 37e coil end part, 38,338,538,638 , 738, 838 shaft end parts, 38h1 guide hole part, 38r1 coil end storage part, 38r2 guide groove part, 338h3 resin injection hole, 638F fan, 50 connection board, 51 pin, 52 cross wire, 60 insulation parts, BA battery, CC Control circuit section, MG permanent magnet, PC power circuit section, PC1 switching element, S analog sensor, W, WB lead wire.

Claims

The shaft, the rotor core provided on the shaft, and
A rotor of a rotary electric machine provided at both ends of the rotor core in the axial direction and having an annular shaft end component for holding the rotor core from both sides in the axial direction.
The first shaft end component, which is the shaft end component provided on the shaft and is close to the terminal portion to receive power from the outside, is a connection target that projects upward in the axial direction from the terminal portion and the rotor core. A rotor of a rotating electric machine having a guide portion that guides a lead wire that electrically connects to a component.
The rotor of the rotary electric machine according to claim 1, wherein the guide portion is provided in the radial direction on the surface of the first shaft end component on the rotor core side, and is a groove recessed in the upper side in the axial direction.
The rotor of the rotary electric machine according to claim 1, wherein the guide portion is a hole that penetrates the first shaft end component in the axial direction.
The rotor of the rotary electric machine according to any one of claims 1 to 3, wherein the component to be connected is an end portion of a rotor winding wound around the rotor core.
The rotor of the rotary electric machine according to any one of claims 1 to 3, wherein the connection target component is a sensor attached to a permanent magnet inserted in the rotor in the axial direction.
The rotor of a rotary electric machine according to claim 2, wherein the first shaft end component has a resin injection hole that penetrates the first shaft end component in the axial direction and injects resin between the two shaft end components.
The rotor of the rotary electric machine according to claim 3, wherein the hole of the first shaft end component also serves as a resin injection hole for injecting resin between the two shaft end components.
The rotor winding wound around the rotor core and
The rotor is equipped with a permanent magnet inserted in the axial direction.
The rotor of the rotary electric machine according to any one of claims 1 to 3, wherein the rotor winding is wound so as to cover the periphery of the permanent magnet.
A wire board having a pin for connecting a plurality of the rotor windings between the rotor core and the first shaft end component and holding a crossover between the plurality of rotor windings is provided.
The rotor of a rotary electric machine according to claim 8, wherein the lead wire is connected to the terminal portion via the connection board.
Any of claims 1 to 9, wherein the first shaft end component is integrally formed with a slip ring holding component that is attached to the rotor and holds a slip ring connected to the external drive power supply and the terminal portion. The rotor of the rotary electric machine according to item 1.
The rotor of a rotary electric machine according to any one of claims 1 to 10, wherein the first shaft end component protrudes in the axial direction and is integrally configured with a fan that generates cooling air.
The second shaft end component, which is the shaft end component provided on the opposite side in the axial direction from the first shaft end component, is any one of claims 1 to 11 integrally formed with the shaft. The rotor of the rotary electric machine described in.
The rotor of the rotary electric machine according to any one of claims 1 to 12,
With a stator core and a stator consisting of a stator winding,
The rotor is a rotary electric machine in which an outer peripheral surface faces the inner peripheral surface of the stator and is rotatably supported via a gap.