CN114389409A - Rotating electrical machine - Google Patents

Abstract

A rotating electrical machine in which the deviation of the mounting position of a temperature sensor and the deformation of the temperature sensor are suppressed to improve the reliability of the temperature sensor and the rotating electrical machine. The method comprises the following steps: a rotor having an excitation core around which an excitation winding is wound; a stator having a stator core and a stator coil; a temperature sensor that detects a temperature of the stator coil; and a mounting member that mounts the temperature sensor to the stator coil, wherein a part of a coil conductor of the stator coil, which extends linearly, is recessed in a direction orthogonal to an extending direction of the coil conductor to have a recess on a surface of the coil conductor, wherein a sensor portion of the temperature sensor is disposed on a side of the coil conductor where the recess is provided, and wherein the mounting member incorporates the sensor portion of the temperature sensor and has a protruding portion that abuts against the recess.

Description

Rotary motor

technical field

The present application relates to a rotating electrical machine.

Background technique

A rotating electrical machine includes a rotor and a stator, the stator having a stator core and stator coils. The rotating electrical machine operates as an electric motor that drives the internal combustion engine, and the rotating electrical machine functions as a generator that is driven by the internal combustion engine to generate electricity. When the rotating electrical machine operates as a motor, current flows in the stator coils. At this time, when the stator coil generates heat due to the current flowing in the stator coil, the temperature of the stator coil increases. When the temperature of the stator coil rises excessively, the stator coil and the components provided around the stator coil may be damaged. Therefore, a temperature sensor that detects the temperature of the stator coil is provided in the stator coil, and the energization current flowing to the stator coil is controlled based on the temperature detected by the temperature sensor to prevent damage to components caused by excessive temperature rise of the stator coil. produce.

As a configuration of a temperature sensor provided in a stator coil, a configuration is disclosed in which a bent portion that is bent in a U-shape so as to face the coil conductor of the stator coil is provided in the stator coil, and a gap portion of the bent portion is placed in the stator coil. The temperature sensor is in contact with the stator coil, and the temperature sensor is fixed by sandwiching and holding the two by the fixing member (for example, refer to Patent Document 1). Since the temperature sensor is in contact with the stator coil at the bent portion, the temperature sensor can detect the temperature of the stator coil.

The stator coil provided with the temperature sensor has a temperature deviation along the extending direction of the coil conductor forming the stator coil. Therefore, in order for the temperature sensor to accurately measure the temperature of the stator coil, it is necessary to suppress the displacement of the position where the temperature sensor is attached with respect to the extending direction of the coil conductor.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2013-225959

In the above-mentioned Patent Document 1, the temperature sensor is clamped and held by the gap of the stator coil bent in a U shape, and the temperature sensor is fixed by the fixing member, thereby suppressing displacement of the installation position of the temperature sensor. However, it is necessary to form the bent portion in a state slightly opened so that the temperature sensor can be inserted, and after inserting the temperature sensor, the coil conductor of the bent portion needs to be pushed back in order to press the temperature sensor. Therefore, there is a technical problem in that even if the coil conductor is pressed with the same force, the force with which the temperature sensor is pressed by the coil conductor varies due to the difference in the opening amount of the bent portion before inserting the temperature sensor and the difference in the hardness of the coil conductor. , since the temperature sensor cannot be fully pressed, the installation position of the temperature sensor relative to the extending direction of the coil conductor is shifted.

In addition, there is a technical problem in that the measured temperature of the stator coil varies due to the deviation of the installation position of the temperature sensor, the accurate temperature of the stator coil cannot be measured, and the reliability of the temperature sensor decreases. In addition, when the temperature sensor is sandwiched and held in the gap of the bent portion of the coil, when both sides of the coil conductor are pressed by the pressing member, the temperature sensor may be subjected to a load due to excessive pressing of the pressing member, and the temperature may increase. The sensor is deformed. When the temperature sensor is deformed, the temperature sensor cannot measure the exact temperature of the stator coil, and there is a technical problem that the reliability of the temperature sensor decreases. In addition, when the reliability of the temperature sensor decreases, the occurrence of damage to the components included in the rotating electrical machine cannot be suppressed, and therefore, there is a technical problem that the reliability of the rotating electrical machine decreases.

SUMMARY OF THE INVENTION

Therefore, an object of the present application is to obtain a rotating electrical machine that suppresses displacement of the installation position of the temperature sensor included in the rotating electrical machine and deformation of the temperature sensor, so as to improve the reliability of the temperature sensor and the rotating electrical machine.

The rotating electrical machine disclosed in the present application includes: a rotor having an excitation core part wound with an excitation winding and rotating integrally with a rotating shaft; and a stator having a cylindrical stator iron core and a stator coil, the The stator core is arranged radially outside the field core portion, the stator coil is arranged in a slot formed in the stator core; a temperature sensor detects the temperature of the stator coil; and a mounting member, the The mounting member attaches the temperature sensor to the stator coil, a part of the coil conductor extending linearly of the stator coil is recessed in the direction orthogonal to the extending direction of the coil conductor, and the surface of the coil conductor has a recess, and the sensor portion of the temperature sensor The mounting member is disposed on the side of the coil conductor on which the concave portion is provided, and the mounting member incorporates a sensor portion of the temperature sensor, and has a protruding portion abutting on the concave portion.

According to the rotating electric machine disclosed in the present application, the stator coil has the concave portion on the surface of the coil conductor, the sensor portion of the temperature sensor is disposed on the side of the coil conductor where the concave portion is provided, and the mounting member incorporates the sensor portion of the temperature sensor, and has the same sensor portion as the temperature sensor. Since the protruding portion abuts against the recessed portion, the position of the sensor portion of the temperature sensor incorporated in the mounting member is determined by the recessed portion and the protruding portion, thereby suppressing displacement of the mounting position of the temperature sensor with respect to the coil conductor. Since a member for pressing the temperature sensor is not used in the attachment of the temperature sensor, deformation of the temperature sensor can be suppressed. Since the deviation of the mounting position of the temperature sensor and the deformation of the temperature sensor are suppressed, the reliability of the temperature sensor and the rotating electrical machine can be improved.

Description of drawings

FIG. 1 is a perspective view showing an outline of a rotating electrical machine according to Embodiment 1. FIG.

FIG. 2 is a cross-sectional view parallel to the axial direction, showing the outline of the rotating electrical machine according to Embodiment 1. FIG.

3 is a perspective view of a main part showing the outline of the rotating electrical machine according to the first embodiment.

4 is a perspective view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to Embodiment 1. FIG.

5 is a front view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to Embodiment 1. FIG.

6 is a plan view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to Embodiment 1. FIG.

FIG. 7 is a cross-sectional view of the additional wire, temperature sensor, and mounting member cut at the A-A cross-sectional position of FIG. 6 .

8 is a cross-sectional view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to Embodiment 2. FIG.

FIG. 9 is a cross-sectional view of the additional wire and mounting member cut at the B-B cross-sectional position of FIG. 8 .

FIG. 10 is a cross-sectional view of the additional wire and another mounting member cut at the B-B cross-sectional position of FIG. 8 .

11 is a cross-sectional view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to Embodiment 3. FIG.

12 is a plan view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to Embodiment 4. FIG.

13 is a cross-sectional view of the additional wire, temperature sensor, and mounting member cut at the C-C cross-sectional position of FIG. 12 .

14 is a cross-sectional view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to the fifth embodiment.

15 is a cross-sectional view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to Embodiment 6. FIG.

16 is a cross-sectional view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to Embodiment 7. FIG.

17 is a front view of an additional wire, a temperature sensor, and a mounting member of the rotary electric machine according to the eighth embodiment.

FIG. 18 is a cross-sectional view of the additional wire, temperature sensor, and mounting member cut at the D-D cross-sectional position of FIG. 17 .

(Symbol Description)

1 rotating motor;

2 stator;

3 rotors;

4 shells;

5 axes;

6a bearing;

6b bearing;

7 stator core;

8 stator coils;

9 rotor core;

11 temperature sensor;

12 sensor section;

13 installation components;

13a protrusion;

14 sensor holding part;

14a protrusion;

15 fixed components;

15a protrusion;

101 additional line;

102 main body;

102a surface;

102b side;

The face on the opposite side of 102c;

103 erection;

104 recess;

104a bottom;

105 conductor part;

106 insulating film;

111 additional line;

112 main body;

113 erection;

114 Recess.

Detailed ways

Hereinafter, the rotating electrical machine according to the embodiment of the present application will be described based on the drawings. In addition, in each figure, the same code|symbol is attached|subjected to the same or equivalent member and part, and it demonstrates.

Embodiment 1

1 is a perspective view showing the outline of the rotary electric machine 1 according to Embodiment 1, FIG. 2 is a cross-sectional view parallel to the axial direction of the rotary electric machine 1 showing the outline of the rotary electric machine 1 , and FIG. 1 is an enlarged perspective view of the part enclosed by the dotted line in FIG. 1 attached to the mounting member 13, FIG. 4 is a perspective view of the additional wire 101, the temperature sensor 11, and the mounting member 13 of the rotary electric machine 1, and FIG. 5 is a perspective view of the rotary electric machine 1 The front view of the additional wire 101, the temperature sensor 11 and the mounting member 13 of FIG. 6 is a plan view of the additional wire 101, the temperature sensor 11 and the mounting member 13 of the rotary electric machine 1, and FIG. 7 is cut at the A-A cross-sectional position of FIG. Cross-sectional view of additional wire 101 , temperature sensor 11 and mounting member 13 . The rotating electrical machine 1 includes a stator 2 and a rotor 3 and operates as an electric motor for driving an internal combustion engine (not shown). The stator includes a stator core 7 and a stator coil 8 . Alternatively, the rotating electrical machine 1 functions as a generator driven by an internal combustion engine to generate electricity.

<Rotary Electric Machine 1>

The rotor 3 has a rotor core 9 which is a field core portion to which a field coil (not shown) is wound and attached, and rotates integrally with the shaft 5 as a rotating shaft. As shown in FIG. 2 , the rotor 3 includes a bearing 6a on one end side in the axial direction of the shaft 5, and includes a bearing 6b on the other end side. The rotor 3 is rotatably supported by a bracket (not shown) via bearings 6 a and 6 b fixed to the shaft 5 . The rotor core 9 is fixed to the shaft 5 by press fitting or the like. The rotor core 9 is arranged in the inner space surrounded by the stator core 7 . The outer peripheral surface of the rotor core 9 faces the inner peripheral surface of the stator core 7 with a gap therebetween.

The stator 2 includes: a cylindrical stator core 7 arranged radially outside the rotor core 9; and a multiphase stator, which is an armature coil arranged in a slot (not shown) formed in the stator core 7 Coil 8. The stator core 7 is arranged inside the cylindrical casing 4 . The stator coil 8 is formed of coil conductors. The coil conductor includes: a conductor portion; and an insulating coating provided to surround the conductor portion. The cross section of the coil conductor is rectangular or circular. The stator coil 8 includes a coil portion (not shown) and an additional wire 101 . The coil portion is a portion on which the coil conductor is wound and attached, and is inserted into a slot formed between adjacent pole teeth of the stator core 7 . The ends of the coil conductors forming the coil portions protrude from the stator core 7 toward one side in the axial direction. The additional wire 101 is a coil conductor that connects both ends of the coil portion. In the present embodiment, as shown in FIG. 3 , a temperature sensor 11 and a mounting member 13 are provided at the additional wire 101 , and the temperature sensor 11 measures the temperature of the stator coil 8 . In addition, the temperature sensor 11 and the mounting member 13 are omitted in FIGS. 1 and 2 .

The multi-phase stator coil 8 is, for example, one set of three-phase windings or two sets of three-phase windings, but is not limited to this, and is set according to the type of the rotating electrical machine 1 . When the stator coil 8 is a three-phase coil, a rotating magnetic field is generated in the stator 2 by supplying three-phase AC power to the stator coil 8 in the rotating electrical machine 1 . The rotor 3 is rotated by the interaction of the magnetic flux generated by the excitation magnetic poles provided in the rotor 3 and the rotating magnetic field.

<The temperature sensor 11 and the mounting member 13>

The temperature sensor 11 and the mounting member 13, which are the main parts of the present application, will be described. The rotating electrical machine 1 includes a temperature sensor 11 that detects the temperature of the stator coil 8 , and an attachment member 13 that attaches the temperature sensor 11 to the stator coil 8 . As shown in FIG. 4 , the temperature sensor 11 and the mounting member 13 are provided on the additional wire 101 of the stator coil 8 . The additional wire 101 of the stator coil 8 includes a main body portion 102 that is a portion of a coil conductor extending linearly, and a rising portion 103 that is a portion of the coil conductor connected to the end of the coil portion. A part of the main body part 102 extending linearly of the additional wire 101 is recessed in a direction orthogonal to the extending direction of the main body part 102 and has a recessed part 104 on the surface of the main body part 102 . As shown in FIG. 7 , a portion of the body portion 102 extending linearly is bent in a direction orthogonal to the extending direction of the body portion 102 , and the recessed portion 104 in this embodiment is formed on the surface of the body portion 102 . Although the recessed portion 104 is provided at the center of the main body portion 102, the position where the recessed portion 104 is provided is not limited to the center of the main body portion 102, and may be other positions.

The temperature sensor 11 includes a sensor portion 12 as a portion that detects temperature. The sensor portion 12 of the temperature sensor 11 is arranged on the side of the main body portion 102 on which the recessed portion 104 is provided. The temperature sensor 11 is, for example, a thermistor whose resistance value changes with temperature. The temperature sensor 11 is connected to a control unit (not shown) that controls electric power supplied to the rotating electrical machine 1 . Based on the temperature detected by the temperature sensor 11 , the control unit controls the energization current flowing to the stator coil 8 to suppress the occurrence of damage to the stator coil 8 or components provided around the stator coil 8 due to an excessive temperature rise of the stator coil 8 .

The attachment member 13 incorporates the sensor portion 12 of the temperature sensor 11 , and has a protruding portion 13 a that is in contact with the recessed portion 104 . The mounting member 13 insulates and protects the sensor portion 12 of the temperature sensor 11 from the outside. The attachment member 13 is attached to the main body portion 102 so as to cover part or all of the portion of the main body portion 102 where the recessed portion 104 is formed. In the present embodiment, the attachment member 13 covers a part of the surface of the main body part 102 on the side where the recessed part 104 is provided and a part of the side surface of the main body part 102 on both sides of the recessed part 104 . The mounting member 13 is, for example, a molded resin composed of an insulating material. The mounting member 13 is provided on the main body portion 102 by bonding the protruding portion 13 a of the mounting member 13 of the sensor portion 12 in which the temperature sensor 11 is built with the recessed portion 104 . The arrangement of the mounting member 13 is not limited to the adhesion of the protruding portion 13 a and the recessed portion 104 . The attachment member 13 may be provided by integrally molding the sensor portion 12 of the temperature sensor 11 and a part of the portion of the main body portion 102 where the recessed portion 104 is formed.

According to this configuration, the position of the sensor portion 12 of the temperature sensor 11 incorporated in the mounting member 13 is determined by the recessed portion 104 of the main body portion 102 and the protruding portion 13 a that abuts against the recessed portion 104 of the mounting member 13 , and the temperature sensor 11 can be restrained from being relative to the temperature sensor 11 . Offset of the installation position of the additional wire 101 . Moreover, since the member which presses the temperature sensor 11 is not used in attachment of the temperature sensor 11, deformation|transformation of the temperature sensor 11 can be suppressed. Since the displacement of the attachment position of the temperature sensor 11 and the deformation of the temperature sensor 11 are suppressed, the reliability of the temperature sensor 11 can be improved.

Although the temperature sensor 11 and the mounting member 13 are provided in the main body portion 102 of the additional wire 101 of the stator coil 8 in the present embodiment, the arrangement of the temperature sensor 11 and the mounting member 13 with respect to the stator coil 8 is not limited to the main body portion 102 . As long as the concave portion is formed in the coil conductor, displacement of the attachment positions of the temperature sensor 11 and the attachment member 13 can be suppressed, and the temperature sensor 11 and the attachment member 13 can be provided in the coil conductor. Therefore, a recessed portion may be formed in the rising portion 103 of the additional wire 101 of the stator coil 8 or the coil portion of the stator coil 8, and the temperature sensor 11 and the mounting member 13 may be provided in the rising portion 103 or the coil portion. Since the temperature sensor 11 and the mounting member 13 can be arranged at any position of the stator coil 8, the temperature sensor 11 and the mounting member 13 can be arranged at a position where the temperature of the stator coil 8 may increase. Therefore, the temperature sensor 11 can realize the control under the worst condition of the temperature of the stator coil 8 , so that the reliability of the rotating electrical machine 1 can be improved.

As described above, in the rotating electrical machine 1 according to Embodiment 1, the stator coil 8 has the recessed portion 104 on the surface of the coil conductor, the sensor portion 12 of the temperature sensor 11 is arranged on the side of the coil conductor where the recessed portion 104 is provided, and the mounting member 13. The sensor portion 12 of the temperature sensor 11 is built in, and has a protruding portion 13a that is in contact with the concave portion 104. Therefore, the concave portion 104 and the protruding portion 13a that abuts against the concave portion 104 of the mounting member 13 determine the built-in mounting member 13. Because of the position of the sensor portion 12 of the temperature sensor 11, displacement of the mounting position of the temperature sensor 11 with respect to the coil conductor can be suppressed. Moreover, since the member which presses the temperature sensor 11 is not used in attachment of the temperature sensor 11, deformation|transformation of the temperature sensor 11 can be suppressed. Since the displacement of the attachment position of the temperature sensor 11 and the deformation of the temperature sensor 11 are suppressed, the temperature sensor 11 can measure the accurate temperature of the stator coil 8 . Since the exact temperature of the stator coil 8 can be measured, the reliability of the temperature sensor 11 can be improved. By improving the reliability of the temperature sensor 11 , the occurrence of damage to the stator coil 8 or components provided around the stator coil 8 is further suppressed, and therefore, the reliability of the rotating electrical machine 1 can be further improved.

When the attachment member 13 is attached to the coil conductor so as to cover a part of the portion of the coil conductor in which the recessed portion 104 is formed, the attachment member 13 can stably attach the temperature sensor 11 to the recessed portion 104 , and can further suppress the relative relationship between the temperature sensor 11 and the temperature sensor 11 . Offset from the installation position of the coil conductors. In addition, when part of the linearly extending coil conductor is bent in a direction orthogonal to the extending direction of the coil conductor to form the concave portion 104 on the surface of the coil conductor, the concave portion 104 can be easily formed in the coil conductor place. In addition, as long as the shape of the recessed portion 104 abuts against the protruding portion 13a, regardless of the accuracy of the shape, it is not affected by the hardness of the coil conductor, and high-precision molding is not required to form the recessed portion 104. Therefore, even with conductor coils having different hardnesses, variation in the mounting position of the temperature sensor 11 can be reliably suppressed, accurate temperature measurement can be performed, and the reliability of the temperature sensor 11 can be improved, and the coil conductor can be easily formed, thereby reducing the number of rotating electrical machines. 1 processing fee.

Only one coil conductor is required for fixing the temperature sensor 11 , and it is not necessary to arrange the coil conductors on both sides of the temperature sensor 11 . Therefore, the structure in which the temperature sensor 11 and the attachment member 13 are attached to the coil conductor saves space, and the rotary electric machine 1 can be reduced in size.

Embodiment 2

The rotating electrical machine 1 of Embodiment 2 will be described. 8 is a cross-sectional view of the additional wire 101 , the temperature sensor 11 , and the mounting member 13 of the rotary electric machine 1 according to Embodiment 2 cut at the same position as the cross-sectional position A-A in FIG. 6 , and FIG. 9 is the cross-sectional position B-B in FIG. 8 . FIG. 10 is a cross-sectional view of the additional wire 101 and the mounting member 13 cut at the B-B cross-sectional position of FIG. 8 and the other mounting member 13 . The rotating electrical machine 1 according to the second embodiment has a structure in which the attachment member 13 also covers the surface 102 c on the opposite side of the surface on which the recessed portion 104 of the main body portion 102 is provided.

As shown in FIG. 8 , the attachment member 13 is attached to the main body portion 102 so as to cover the entire portion of the main body portion 102 where the recessed portion 104 is formed. As shown in FIG. 9 , the attachment member 13 abuts a part of the surface 102 a of the main body 102 on the side where the recess 104 is provided, side surfaces 102 b on both sides of the recess 104 , and a surface 102 c on the opposite side of the surface where the recess 104 is provided. By bringing the surface 102 c on the opposite side of the surface on which the recessed portion 104 is provided to the mounting member 13 , the mounting member 13 can more stably mount the temperature sensor 11 to the recessed portion 104 , and it is possible to further restrain the temperature sensor 11 from attaching to the mounting member 13 . Offset of the installation position of the wire 101 .

In the present embodiment, the mounting member 13 has shown a structure in which the entire surface 102c on the opposite side of the surface of the main body 102 on which the recessed portion 104 is provided is covered by the mounting member 13, but the mounting member 13 is not limited to covering the surface 102c on the opposite side with the mounting member 13. The structure of the full coverage of the face 102c. As shown in FIG. 10, the attachment member 13 may cover a part of the surface 102c on the opposite side. Even if the attachment member 13 covers a part of the surface 102c on the opposite side, the deviation of the attachment position of the temperature sensor 11 can be further suppressed.

As described above, in the rotating electrical machine 1 according to Embodiment 2, the attachment member 13 is attached to the main body portion 102 so as to cover the entire portion of the main body portion 102 where the recessed portion 104 is formed, and therefore, the attachment member 13 can attach the temperature sensor Since the temperature sensor 11 is stably attached to the recessed portion 104, the displacement of the attachment position of the temperature sensor 11 with respect to the additional wire 101 can be further suppressed. Since the deviation of the attachment position of the temperature sensor 11 can be further suppressed, the temperature sensor 11 can measure the temperature of the stator coil 8 more accurately. Since the exact temperature of the stator coil 8 can be measured, the reliability of the temperature sensor 11 can be improved. By improving the reliability of the temperature sensor 11 , the occurrence of damage to the stator coil 8 or components provided around the stator coil 8 is further suppressed, and therefore, the reliability of the rotating electrical machine 1 can be further improved.

Embodiment 3

The rotating electrical machine 1 according to the third embodiment will be described. 11 is a cross-sectional view of the additional wire 101 , the temperature sensor 11 , and the mounting member 13 of the rotary electric machine 1 according to Embodiment 3, cut at the same position as the A-A cross-sectional position of FIG. 6 . The rotating electrical machine 1 according to the third embodiment has a configuration in which the arrangement of the sensor portion 12 of the temperature sensor 11 is different.

The sensor portion 12 of the temperature sensor 11 is arranged at a position facing the bottom portion 104 a of the recessed portion 104 . In Embodiment 1, as shown in FIG. 7 , the sensor portion 12 of the temperature sensor 11 is arranged at the end portion of the recessed portion 104 . When the arrangement of the sensor portion 12 is shifted from the end portion of the concave portion 104 to the bottom portion 104a side, the distance between the sensor portion 12 and the main body portion 102 increases. When the arrangement of the sensor portion 12 is shifted from the end portion of the recessed portion 104 to the side opposite to the bottom portion 104a side, the distance between the sensor portion 12 and the main body portion 102 becomes shorter. In this way, the distance between the sensor portion 12 and the main body portion 102 changes due to a slight shift in the arrangement of the sensor portion 12 , so that the accurate temperature of the stator coil 8 cannot be measured in some cases. In the present embodiment, since the sensor portion 12 is arranged at a position facing the bottom portion 104a of the recessed portion 104, even if the arrangement of the sensor portion 12 is shifted, the distance between the sensor portion 12 and the main body portion 102 does not change. Variety. Therefore, the sensor unit 12 can measure the temperature of the stator coil 8 more accurately.

As described above, in the rotating electrical machine 1 according to the third embodiment, the sensor portion 12 of the temperature sensor 11 is arranged at a position opposite to the bottom portion 104a of the recessed portion 104, and therefore, even if the arrangement of the sensor portion 12 is shifted, the sensor portion 12 and Since the distance between the main body parts 102 does not change, the sensor part 12 can measure the temperature of the stator coil 8 more accurately. Since the exact temperature of the stator coil 8 can be measured, the reliability of the temperature sensor 11 can be improved. By improving the reliability of the temperature sensor 11 , the occurrence of damage to the stator coil 8 or components provided around the stator coil 8 is further suppressed, and therefore, the reliability of the rotating electrical machine 1 can be further improved.

Embodiment 4

The rotating electrical machine 1 according to the fourth embodiment will be described. 12 is a plan view of the additional wire 101 , the temperature sensor 11 , and the attachment member 13 of the rotary electric machine 1 according to Embodiment 4, and FIG. 13 is a view of the additional wire 101 , the temperature sensor 11 , and the attachment member 13 cut at the position of the C-C cross-section in FIG. 12 . Cutaway view. In the rotating electrical machine 1 according to the fourth embodiment, the mounting member 13 is constituted by the sensor holding portion 14 and the fixing member 15 .

The mounting member 13 includes a sensor holding portion 14 and a fixing member 15 . The sensor holding portion 14 has a protruding portion 14 a that is in contact with the recessed portion 104 . The sensor holding portion 14 incorporates the sensor portion 12 of the temperature sensor 11 . The fixing member 15 fixes the sensor holding portion 14 to the additional wire 101 so as to integrally surround the sensor holding portion 14 and the portion of the additional wire 101 in which the concave portion 104 is formed as the coil conductor. The sensor holding portion 14 and the fixing member 15 are formed of an insulating material, for example, a molded resin. The sensor holding portion 14 and the fixing member 15 protect the sensor portion 12 of the temperature sensor 11 by being insulated from the outside.

The sensor holding portion 14 is provided on the main body portion 102 of the additional wire 101 by bonding the protruding portion 14 a of the sensor holding portion 14 in which the sensor portion 12 is built with the recessed portion 104 . The arrangement of the sensor holding portion 14 is not limited to the adhesion of the protruding portion 14 a and the recessed portion 104 . The sensor holding portion 14 may be provided by integrally molding the sensor portion 12 of the temperature sensor 11 and a part of the portion of the main body portion 102 where the recessed portion 104 is formed. The fixing member 15 is provided by integral molding so as to integrally surround the portion of the additional wire 101 where the recessed portion 104 is formed and the sensor holding portion 14 .

As described above, in the rotary electric machine 1 according to Embodiment 4, the mounting member 13 includes the sensor holding portion 14 and the fixing member 15 to integrally integrate the portion of the additional wire 101 where the recessed portion 104 is formed and the sensor holding portion 14 Since the sensor holding portion 14 is fixed to the additional wire 101 in a surrounding manner, the fixing of the sensor holding portion 14 to the portion of the additional wire 101 where the recessed portion 104 is formed is further strengthened, so that the temperature sensor 11 can be further restrained relative to the additional wire 101 the offset of the installation position. Since the deviation of the attachment position of the temperature sensor 11 can be further suppressed, the temperature sensor 11 can measure the temperature of the stator coil 8 more accurately. Since the exact temperature of the stator coil 8 can be measured, the reliability of the temperature sensor 11 can be improved. By improving the reliability of the temperature sensor 11 , the occurrence of damage to the stator coil 8 or components provided around the stator coil 8 is further suppressed, and therefore, the reliability of the rotating electrical machine 1 can be further improved.

Embodiment 5

The rotating electrical machine 1 according to the fifth embodiment will be described. 14 is a cross-sectional view of the additional wire 101 , the temperature sensor 11 , and the mounting member 13 of the rotary electric machine 1 according to Embodiment 5, cut at the same position as the C-C cross-sectional position of FIG. 12 . The rotary electric machine 1 according to the fifth embodiment has a configuration in which the shape of the sensor holding portion 14 is different from that of the fourth embodiment.

The mounting member 13 includes a sensor holding portion 14 and a fixing member 15 . The sensor holding portion 14 incorporates the sensor portion 12 of the temperature sensor 11 . The shape of the sensor holding portion 14 is, for example, a rectangular parallelepiped, but is not limited to this, and may be a cylinder. The fixing member 15 fixes the sensor holding portion 14 to the additional wire 101 so as to integrally surround the portion of the additional wire 101 in which the concave portion 104 is formed, which is a coil conductor, and the sensor holding portion 14 , and has a protruding portion abutting against the concave portion 104 . 15a. The sensor holding portion 14 and the fixing member 15 are formed of an insulating material, for example, a molded resin. The sensor holding portion 14 and the fixing member 15 protect the sensor portion 12 of the temperature sensor 11 by being insulated from the outside.

In a state where the sensor holding portion 14 is relatively positioned and held by the portion of the additional wire 101 where the recessed portion 104 is formed, the portion of the additional wire 101 where the recessed portion 104 is formed and the sensor holding portion 14 are integrally surrounded and integrally molded to fix it. member 15. The fixing member 15 is filled between the recessed portion 104 and the sensor holding portion 14 . Since the fixing member 15 is filled between the recessed portion 104 and the sensor holding portion 14 , the air layer formed between the recessed portion 104 and the sensor holding portion 14 can be filled by the fixing member 15 . Since the formation of the air layer between the concave portion 104 and the sensor holding portion 14 is suppressed, variation in the detected temperature of the stator coil 8 due to the influence of the air layer is suppressed.

As described above, in the rotary electric machine 1 according to Embodiment 5, the mounting member 13 includes the sensor holding portion 14 and the fixing member 15 to integrally integrate the portion of the additional wire 101 where the recessed portion 104 is formed and the sensor holding portion 14 Since the sensor holding portion 14 is fixed to the coil conductor in a surrounding manner, the fixing of the sensor holding portion 14 to the portion of the additional wire 101 where the recessed portion 104 is formed is further strengthened, and thus the temperature sensor 11 to the additional wire 101 can be further restrained from being fixed. Offset of the installation position. In addition, since the fixing member 15 is filled between the concave portion 104 and the sensor holding portion 14 , the formation of an air layer between the concave portion 104 and the sensor holding portion 14 is suppressed, and thus detection due to the influence of the air layer is suppressed. temperature deviation. Since the variation of the detected temperature detected by the temperature sensor 11 is suppressed, the temperature sensor 11 can measure the temperature of the stator coil 8 more accurately. Since the exact temperature of the stator coil 8 can be measured, the reliability of the temperature sensor 11 can be improved. By improving the reliability of the temperature sensor 11 , the occurrence of damage to the stator coil 8 or components provided around the stator coil 8 is further suppressed, and therefore, the reliability of the rotating electrical machine 1 can be further improved.

Embodiment 6

The rotating electrical machine 1 according to the sixth embodiment will be described. 15 is a cross-sectional view of the additional wire 101 , the temperature sensor 11 , and the mounting member 13 of the rotary electric machine 1 according to Embodiment 6, cut at the same position as the A-A cross-sectional position of FIG. 6 . The rotating electrical machine according to the sixth embodiment has a structure in which the cross-sectional area of the portion of the coil conductor in which the recessed portion 104 is formed is different from that of the other portions.

By making the cross-sectional area of a part of the additional wire 101 as a coil conductor smaller than the cross-sectional area of the front and rear of a part of the additional wire 101 , the concave portion 104 is recessed in the direction orthogonal to the extending direction of the additional wire 101 and formed on the surface of the additional wire 101 superior. By reducing the cross-sectional area of a part of the additional wire 101 , the resistance of the additional wire 101 at a portion with a small cross-sectional area can be increased.

As described above, in the rotating electrical machine 1 according to the sixth embodiment, by reducing the cross-sectional area of a part of the additional wire 101 to form the recessed portion 104, the resistance of the recessed portion 104 increases, and therefore, the temperature sensor 11 can be applied to a specially provided stator coil. The temperature of the high temperature part of 8 was measured. The temperature sensor 11 can measure the temperature of the high temperature portion of the stator coil 8 , so that the reliability of the rotating electrical machine 1 can be improved.

Embodiment 7

The rotating electrical machine 1 of Embodiment 7 will be described. 16 is a cross-sectional view of the additional wire 101 , the temperature sensor 11 , and the mounting member 13 of the rotary electric machine 1 according to Embodiment 7, cut at the same position as the A-A cross-sectional position of FIG. 6 . The rotary electric machine 1 according to the seventh embodiment has a configuration in which the insulating film 106 of the portion of the coil conductor where the recessed portion 104 is formed is removed.

The coil conductor includes a conductor portion 105 , and an insulating coating 106 provided to surround the conductor portion 105 . The insulating coating 106 is removed from the additional wire 101 at the portion of the additional wire 101 that is the coil conductor where the recessed portion 104 is formed. In the present embodiment, the concave portion 104 is formed by removing the insulating coating 106 from a part of the additional wire 101 to reduce the cross-sectional area of a part of the additional wire 101 . The structure of the concave portion 104 from which the insulating film 106 is removed is not limited to this. As shown in Embodiment 1, the insulating film 106 may be removed from the portion of the recess 104 formed on the surface of the main body 102 by bending in a direction orthogonal to the extending direction of the main body 102 . By removing the insulating film 106, the thermal resistance around the additional wire 101 can be reduced.

As described above, in the rotary electric machine 1 according to Embodiment 7, the insulating film 106 is removed from the additional wire 101 at the portion of the additional wire 101 where the concave portion 104 is formed, and therefore, the thermal resistance around the additional wire 101 can be enabled Therefore, the temperature sensor 11 can more accurately measure the temperature of the conductor portion 105 of the additional wire 101 itself. Since the temperature sensor 11 can measure the temperature of the stator coil 8 more accurately, the reliability of the temperature sensor 11 can be improved. By improving the reliability of the temperature sensor 11 , the occurrence of damage to the stator coil 8 or components provided around the stator coil 8 is further suppressed, and therefore, the reliability of the rotating electrical machine 1 can be further improved.

Embodiment 8

The rotating electrical machine 1 according to the eighth embodiment will be described. 17 is a front view of the additional wires 101 , 111 , the temperature sensor 11 , and the mounting member 13 of the rotary electric machine 1 according to the eighth embodiment, and FIG. 18 is a front view of the additional wires 101 , 111 , and the temperature sensor 11 cut at the D-D cross-sectional position of FIG. 17 . and a cross-sectional view of the mounting member 13 . The rotating electrical machine 1 according to the eighth embodiment has a structure in which the temperature sensor 11 is arranged between the two recesses 104 and 114 .

The stator coil 8 includes two linear additional wires 101 and 111 as coil conductors, which are opposed to each other with an interval therebetween. Like the additional wire 101 , the additional wire 111 includes a main body portion 112 and a standing portion 113 . As shown in FIG. 18 , the additional wires 101 and 111 are respectively formed with concave portions 104 and 114 which are recessed so as to widen the interval at the portions facing each other. The temperature sensor 11 is arranged between the two recesses 104 and 114 . Since the recesses 104 and 114 are arranged on both sides of the temperature sensor 11, the heat receiving area of the temperature sensor 11 can be increased.

Although in this embodiment, the temperature sensor 11 is arranged between the recesses 104 and 114 provided in each of the two additional wires 101 and 111 , the structures of the two recesses 104 and 114 are not limited to this. It is also possible to have a structure in which one additional wire is bent and recessed portions are provided at opposing positions, respectively.

As described above, in the rotary electric machine 1 according to the eighth embodiment, the stator coil 8 is formed in such a manner as to widen the interval at the portions facing each other among the two linear additional wires 101 and 111 opposed to each other at an interval. The recessed recesses 104 and 114 have the temperature sensor 11 disposed between the two recesses 104 and 114 , so that the heat receiving area of the temperature sensor 11 can be increased, and the temperature sensor 11 can measure the temperature of the stator coil 8 more accurately. Since the temperature sensor 11 can measure the temperature of the stator coil 8 more accurately, the reliability of the temperature sensor 11 can be improved. By improving the reliability of the temperature sensor 11 , the occurrence of damage to the stator coil 8 or components provided around the stator coil 8 is further suppressed, and therefore, the reliability of the rotating electrical machine 1 can be further improved.

In addition, various exemplary embodiments and examples are described in this application, but the various features, forms, and functions described in one or more embodiments are not limited to the application of a specific embodiment. , can be applied to the embodiments alone or in various combinations.

Therefore, innumerable modification examples which are not illustrated are envisaged within the technical scope disclosed in the specification of this application. For example, at least one of the constituent elements is modified, added, or omitted, and at least one of the constituent elements is extracted and combined with the constituent elements of other embodiments.

Claims (9)

1. a rotating electrical machine, is characterized in that, comprises: a rotor, the rotor has an excitation core part wound with an excitation winding, and rotates integrally with the rotating shaft; A stator including a cylindrical stator core and a stator coil, the stator core being arranged radially outside the field core portion, and the stator coil being arranged in a slot formed in the stator core middle; a temperature sensor that detects the temperature of the stator coil; and a mounting member that mounts the temperature sensor to the stator coil, A part of the linearly extending coil conductor of the stator coil is recessed in a direction orthogonal to the extending direction of the coil conductor, and a recessed portion is provided on the surface of the coil conductor, The sensor portion of the temperature sensor is arranged on the side of the coil conductor on which the recessed portion is provided, The attachment member incorporates a sensor portion of the temperature sensor, and has a protruding portion abutting on the recessed portion. 2. The rotating electrical machine according to claim 1, characterized in that, The attachment member is attached to the coil conductor so as to cover a part or all of the portion of the coil conductor in which the recessed portion is formed. 3. The rotating electrical machine according to claim 1 or 2, characterized in that, The sensor part of the said temperature sensor is arrange|positioned in the position which opposes the bottom part of the said recessed part. 4. The rotating electrical machine according to any one of claims 1 to 3, characterized in that, The mounting member includes: a sensor holding portion having the protruding portion abutting on the concave portion and incorporating a sensor portion of the temperature sensor; and A fixing member that is made of an insulating material and that fixes the sensor holding portion to the coil conductor so as to integrally surround a portion of the coil conductor where the recessed portion is formed and the sensor holding portion . 5. The rotating electrical machine according to any one of claims 1 to 3, characterized in that, The mounting member includes: a sensor holding portion that incorporates a sensor portion of the temperature sensor; and A fixing member that is made of an insulating material and that fixes the sensor holding portion to the coil conductor so as to integrally surround a portion of the coil conductor where the recessed portion is formed and the sensor holding portion , and the fixing member has the protruding portion abutting on the concave portion. 6. The rotating electrical machine according to any one of claims 1 to 5, characterized in that, The concave portion is formed on the surface of the coil conductor by bending a part of the linearly extending coil conductor in a direction orthogonal to the extending direction of the coil conductor. 7. The rotating electrical machine according to any one of claims 1 to 5, characterized in that, The concave portion is formed by being recessed in a direction orthogonal to the extending direction of the coil conductor by making the cross-sectional area of a part of the coil conductor smaller than the cross-sectional area of the coil conductor before and after a part of the coil conductor. on the surface of the coil conductor. 8. The rotating electrical machine according to any one of claims 1 to 7, characterized in that, The coil conductor includes: a conductor portion; and an insulating coating provided to surround the conductor portion, The insulating coating is removed from the coil conductor at the portion of the coil conductor where the recessed portion is formed. 9. The rotating electrical machine according to any one of claims 1 to 8, characterized in that, In the stator coil, the concave portions recessed so as to widen the interval are formed at portions facing each other among the two linear coil conductors opposed to each other at an interval. The temperature sensor is arranged between the two recesses.

Images