WO2014132359A1 - 回転電機 - Google Patents
回転電機 Download PDFInfo
- Publication number
- WO2014132359A1 WO2014132359A1 PCT/JP2013/055135 JP2013055135W WO2014132359A1 WO 2014132359 A1 WO2014132359 A1 WO 2014132359A1 JP 2013055135 W JP2013055135 W JP 2013055135W WO 2014132359 A1 WO2014132359 A1 WO 2014132359A1
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- WIPO (PCT)
- Prior art keywords
- coil
- insertion hole
- stator
- temperature
- teeth
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/16—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
Definitions
- the present invention relates to a rotating electrical machine having a temperature detector element.
- a temperature detection element for detecting the temperature of the stator coil is incorporated in the stator, the current supplied to the stator coil is controlled based on the temperature detected by the temperature detection element, and damage due to excessive temperature rise of the stator coil occurs. Was preventing.
- a hollow tube portion an inner end portion connected to one end of the tube portion, and one side portion connected to the other end of the tube portion and connected to the tube portion
- An insulator having an outer end formed with a pair of coil grooves extending in the direction of the rotation axis in the vicinity passes through the coil support portion of the tooth inside the tube portion, and the inner end portion and the outer end portion are connected to the tip end portion of the tooth.
- the stator coil is configured by winding a conductor wire through one coil groove and wound around a pipe portion, and a temperature detection element is press-fitted into the other coil groove so as to detect the temperature of the stator coil.
- the temperature detection element inserted into the coil groove Detects the temperature of the tube portion side of the stator coil, that is, the coil inner layer portion.
- the temperature of the coil inner layer portion is lower than the temperature of the coil outer layer portion. Therefore, the temperature detection element has a problem that it cannot detect the temperature of the coil outer layer portion of the stator coil to be controlled.
- the rod-shaped portion is inserted into the gap between the coil end and the tooth from the inner peripheral side to dispose the body portion, and the body portion is in contact with the inner peripheral surface of the coil end.
- a conventional stator in which a temperature detection element is held has been proposed (see, for example, Patent Document 2).
- the present invention has been made to solve the above-described problems, and suppresses a decrease in the winding space in the slot and allows the insulator to hold the temperature detection element so as to detect the temperature of the coil outer layer portion, thereby increasing the number of parts.
- An object is to obtain an inexpensive, small rotating electric machine with a reduced amount of pressure.
- a rotating electrical machine includes an annular stator core, a stator having a concentrated winding coil wound around each tooth of the stator core, and a rotor, and includes a body portion and a length direction of the body portion. Insulators having a pair of flange portions connected to both ends, respectively, such that the length direction of the body portion coincides with the radial direction of the teeth, and the bottom surface of the body portion is aligned with both end surfaces in the axial direction of the teeth.
- the concentrated winding coil winds a conductor wire in multiple layers around the teeth through a concave space formed by the body portion and the pair of flange portions at both ends in the axial direction of the teeth. It is structured.
- One flange portion of the pair of flange portions is disposed on an end surface of the core back of the stator core, and a temperature detecting element is inserted into an element insertion hole formed in the one flange portion, and the coil of the concentrated winding coil It is installed so that the temperature of the end can be detected.
- the insulator also serves as a holding member for the temperature detection element, there is no need to newly provide a member for holding the temperature detection element, the number of parts can be reduced, and the manufacturing cost can be reduced. Since the temperature detection element is inserted and disposed in an element insertion hole formed in one flange portion of the insulator, the size of the rotating electrical machine can be reduced. Since one flange portion of the insulator holding the temperature detecting element is arranged on the end surface of the core back of the stator core, the winding space in the slot is not reduced, the space factor of the coil is increased, and the rotating electric machine High output can be achieved.
- FIG. 5 is a cross-sectional view taken along line VV in FIG. 2. It is a perspective view which shows the core assembly which comprises the stator in the rotary electric machine which concerns on Embodiment 1 of this invention.
- FIG. 9 is a cross-sectional view taken along arrow IX-IX in FIG. 8. It is a perspective view which shows the insulator which comprises the stator in the rotary electric machine which concerns on Embodiment 1 of this invention. It is an end elevation which shows the insulator which comprises the stator in the rotary electric machine which concerns on Embodiment 1 of this invention.
- FIG. 13 is a cross-sectional view taken along arrow XIII-XIII in FIG. 11. It is a front view which shows the temperature detection element which comprises the stator in the rotary electric machine which concerns on Embodiment 1 of this invention. It is a side view which shows the temperature detection element which comprises the stator in the rotary electric machine which concerns on Embodiment 1 of this invention. It is a perspective view which shows the insulator which comprises the stator in the rotary electric machine which concerns on Embodiment 2 of this invention.
- FIG. 18 is a cross-sectional view taken along arrow XIX-XIX in FIG. 17. It is a perspective view which shows the core assembly which comprises the stator in the rotary electric machine which concerns on Embodiment 2 of this invention. It is an end elevation which shows the core assembly which comprises the stator in the rotary electric machine which concerns on Embodiment 2 of this invention. It is an end elevation which shows the stator in the rotary electric machine which concerns on Embodiment 2 of this invention. It is an end view which shows the stator in the rotary electric machine which concerns on Embodiment 2 of this invention.
- FIG. 24 is a cross-sectional view taken along arrow XXIV-XXIV in FIG. 22. It is sectional drawing which shows the core assembly which comprises the stator in the rotary electric machine which concerns on Embodiment 3 of this invention. It is an end elevation which shows the insulator which comprises the stator in the rotary electric machine which concerns on Embodiment 4 of this invention.
- FIG. 27 is a sectional view taken along arrow XXVII-XXVII in FIG. 26.
- FIG. 1 is an end view showing a rotating electrical machine according to Embodiment 1 of the present invention
- FIG. 2 is an end view showing a stator in the rotating electrical machine according to Embodiment 1 of the present invention
- FIG. 3 is Embodiment 1 of the present invention.
- FIG. 4 is a perspective view showing the stator in the rotary electric machine according to Embodiment 1 of the present invention
- FIG. 5 is a cross-sectional view taken along line VV in FIG. 2
- FIG. 7 is a perspective view showing a core assembly constituting the stator in the rotary electric machine according to Embodiment 1 of the invention
- FIG. 7 is an end view showing the core assembly constituting the stator in the rotary electric machine according to Embodiment 1 of the invention
- FIG. FIG. 9 is a side view showing a core assembly constituting a stator in a rotary electric machine according to Embodiment 1 of the present invention
- FIG. 9 is a cross-sectional view taken along arrow IX-IX in FIG. 8
- FIG. 10 is according to Embodiment 1 of the present invention.
- FIG. 11 is an end view showing the insulator constituting the stator in the rotary electric machine according to Embodiment 1 of the present invention
- FIG. 12 relates to Embodiment 1 of the present invention.
- FIG. 13 is a cross-sectional view taken along arrow XIII-XIII in FIG.
- FIG. 11 shows a temperature detection element constituting the stator in the rotary electric machine according to Embodiment 1 of the present invention.
- FIG. 15 is a side view showing a temperature detection element constituting the stator in the rotary electric machine according to Embodiment 1 of the present invention.
- the frame is omitted.
- the winding start side edge part and winding end side edge part of the conductor wire which comprises a concentrated winding coil are abbreviate
- a rotating electrical machine 100 includes a shaft 4 rotatably supported by a frame 1, a rotor 2 fixed to the shaft 4 and rotatably disposed in the frame 1, an annular stator core 9, and And a stator 8 having a stator coil 10 mounted on the stator core 9, the stator core 9 being held by the frame 1, and being disposed so as to surround the rotor 2 via a predetermined gap.
- the rotor 2 is press-fitted and fixed in, for example, a rotor core 3 manufactured by laminating and integrating electromagnetic steel plates punched into a predetermined shape, and a shaft insertion hole 6 formed so as to penetrate the axial center position of the rotor core 3.
- the shaft 4 is provided with permanent magnets 5 that are formed so as to penetrate the rotor core 3 and that are respectively inserted into eight magnet insertion holes 7 that are arranged at an equiangular pitch on the same circumference.
- the stator 8 is composed of an annular stator core 9 and a stator coil 10, as shown in FIGS.
- the stator core 9 is composed of 12 core pieces 11. That is, the core piece 11 is formed in a shape obtained by dividing the stator core 9 into 12 equal parts in the circumferential direction.
- the core piece 11 is produced, for example, by laminating and integrating a large number of electromagnetic steel sheets punched into the same shape, and has a diameter from the center in the circumferential direction of the arc-shaped core back portion 12 and the inner peripheral surface of the core back portion 12. Teeth 13 extending inward in the direction.
- the insulator 20 is a resin molded body using, for example, nylon or polyphenylene sulfide (PPS) resin. As shown in FIGS. 10 to 13, the insulator 20 has a cross section orthogonal to the length direction as a substantially rectangular shape with rounded corners on both upper corners, and the length direction matches the radial direction of the teeth 13. Thus, the bottom surface is connected to one end in the length direction of the body portion 21 so as to cover the end surface and the side surface on the front end side of the tooth 13.
- the U-shaped first flange portion 22 is connected to the other end in the longitudinal direction of the body portion 21 so as to face the first flange portion 22 so as to cover the inner peripheral side of the end surface of the core back portion 12.
- the thin skirt portion 24 is formed so as to extend a predetermined length from both ends in the width direction of the trunk portion 21 and the inner peripheral lower end portions of both wing portions of the second flange portion 22 to the side opposite to the upper surface of the trunk portion 21. It is arrange
- An introduction groove 25 for inserting the conductor wire 31 is formed so as to penetrate in the thickness direction center portion of the second flange portion 23 in the thickness direction.
- the element insertion hole 26 is formed in the wing portion on the one side in the width direction of the second flange portion 23 so that the hole direction is perpendicular to the bottom surface of the second flange portion 23. Further, the opening side of the element insertion hole 26 is formed in an inclined surface and has a mouth opening shape.
- the temperature detection element 27 includes a detection unit 28 and a lead wire 29, and is configured by inserting the detection unit 28 into a tubular pipe 30 serving as a protective member. ing.
- the temperature detection element and the protection member may be integrated by wrapping and solidifying the detection unit 28 to which the lead wire 29 is connected by molten resin by insert molding.
- an NTC thermistor manufactured by mixing and sintering oxides such as nickel, manganese, cobalt, and iron is used.
- a pair of insulators 20 are arranged on the end face of the core piece 11 with the length direction of the body portion 21 aligned with the radial direction of the teeth 13 from both axial sides of the core piece 11.
- the end surface of the tooth 13 is covered by the body portion 21 and the first flange portion 22
- the inner peripheral side of the end surface of the core back portion 12 is covered by the second flange portion 23
- the end face side of the inner peripheral surface of the portion 12 is covered with the first flange portion 22 and the skirt portion 24.
- the conductor wire 31 is drawn onto the trunk portion 21 from the introduction groove 25 formed in the second flange portion 23 of the insulator 20 on one axial side, and is disposed at both axial ends of the teeth 13 of the core piece 11.
- the body portion 21 and the first and second flange portions 22 and 23 are passed through a concave space, wound around the teeth 13 in multiple layers, and then pulled out to one side in the axial direction.
- the conductor wire 31 is wound from the second flange portion 23 side toward the first flange portion 22 to form the first layer, and then wound toward the second flange portion 23 to form the second layer.
- the concentrated winding coil 15 having the conductor wire 31 wound in multiple layers is obtained by repeating this operation. Thereby, as shown in FIGS. 6 to 8, the core assembly 16 in which the concentrated winding coil 15 is wound around the core piece 11 is manufactured.
- the conductor wire 31 is a copper round wire or aluminum round wire having a circular cross section that is coated with insulation.
- the core assembly 16 is arranged in an annular shape in the circumferential direction by abutting the end faces in the circumferential direction of the core back portion 12 of the core piece 11, and is press-fitted and fixed to the annular frame 1.
- the stator 8 is assembled by being inserted into and fixed in 1. Further, the temperature detection element 27 is inserted into the element insertion hole 26.
- the core pieces 11 are arranged in an annular shape by abutting the end faces in the circumferential direction of the core back portion 12 to constitute the stator core 9. Further, the core back portion 12 is connected in the circumferential direction to constitute the core back of the stator core 9, and the space formed by the core back and the adjacent teeth 13 constitutes the slot 14.
- the stator coil 10 is configured by twelve concentrated winding coils 15 wound around the teeth 13 of the core piece 11. A portion of the concentrated winding coil 15 that protrudes outward in the axial direction from the stator core 9 constitutes a coil end of the stator coil 10.
- the circumferential width of the teeth 13 is constant with respect to the radial direction, and the slot 14 has a fan-like cross-sectional shape in which the circumferential width gradually decreases from the bottom toward the opening. Therefore, as shown in FIG. 9, the concentrated winding coil 15 is wound so that the number of layers increases from the front end side of the tooth 13 toward the core back portion 12, thereby increasing the space factor.
- the concentrated winding coil 15 is restricted from moving in the radial direction by the first flange portion 22 and the second flange portion 23.
- the core back portion 12 side wound around the multilayer of the concentrated winding coil 15 is in contact with the inner peripheral surface of the second flange portion 23.
- the detection unit 28 is located at the corner part of the coil end of the concentrated winding coil 15 and radially outward of the coil outer layer part.
- the concentrated winding coil 15 and the core piece 11 There is no direct contact, and insulation between the concentrated winding coil 15 and the core piece 11 is ensured.
- the skirt portions 24 of the pair of insulators 20 disposed at both ends of the core piece 11 are extended so as to overlap each other, or if an insulating sheet is disposed between the skirt portions 24 of the pair of insulators 20, the concentrated winding coil 15 And the core piece 11 can be reliably ensured. Furthermore, if an insulating sheet is disposed between adjacent concentrated winding coils 15, insulation between the concentrated winding coils 15 can be ensured.
- the rotating electrical machine 100 configured as described above is fed to the stator coil 10 from an external power source and operates as an 8-pole 12-slot inner rotor type synchronous motor.
- the insulator 20 also serves as a holding member for the temperature detecting element 27, there is no need to newly provide a member for holding the temperature detecting element 27, the number of parts is reduced, and the manufacturing cost is reduced. Can be reduced. Since the temperature detecting element 27 is inserted and disposed in the element insertion hole 26 formed in the second flange portion 23 of the insulator 20, the rotating electrical machine 100 can be reduced in size.
- the second flange portion 23 of the insulator 20 that holds the temperature detection element 27 is disposed on the end surface of the core back portion 12 of the core piece 11. Therefore, since the temperature detecting element 27 and its holding member are not arranged in the slot 14, the winding space in the slot 14 is not reduced, the coil space factor is increased, and the output of the rotating electrical machine 100 is increased. Figured.
- the temperature detection element 27 can be easily inserted into the element insertion hole 26, and productivity is increased. Since the hole direction of the element insertion hole 26 is the axial direction, the lead wire 29 of the temperature detecting element 27 does not protrude in the radial direction, the radial dimension of the rotating electrical machine 100 can be reduced, and the radial dimension restrictions are severe. Effective for use.
- the conductor wire 31 is wound, the conductor wire 31 is rubbed against the opening edge portion of the element insertion hole to damage the insulating film. Is likely to occur. Therefore, when the element insertion hole is opened on the inner peripheral surface of the second flange portion 23, it is necessary to deburr the opening edge of the element insertion hole. In the first embodiment, since the element insertion hole 26 is not opened on the inner peripheral surface of the second flange portion 23, the deburring process of the opening edge portion of the element insertion hole becomes unnecessary, and the productivity is improved.
- the stator core 9 has a large heat radiating area, is fixed to a stationary member, has high heat radiating properties, and has a lower temperature than the stator coil 10 which is a heat generating component. Therefore, in the concentrated winding coil 15 constituting the stator coil 10, the temperature of the coil outer layer portion is higher than the temperature of the coil inner layer portion close to the stator core 9 (core piece 11).
- the detection part 28 of the temperature detection element 27 is located at the corner part of the coil end of the concentrated winding coil 15 and radially outward of the coil outer layer part. The temperature of the coil outer layer that becomes high can be detected. Therefore, excessive temperature rise of the stator coil 10 can be avoided to prevent the stator coil 10 from being damaged.
- a rotating electrical machine that is required to be small and light, such as a motor for a vehicle, it is often operated with a high coil temperature using a heat-resistant grade conductor wire.
- a heat-resistant grade conductor wire covered with an insulating film such as polyimide
- the heat resistance temperature of the insulator 20 made of nylon, PPS, or the like is lower than the heat resistance temperature of the insulating film covered with the conductor wire.
- the insulator 20 may exceed the heat resistance temperature even when the stator coil 10 is at or below the allowable temperature.
- the insulator temperature is estimated from the measured coil temperature, and the energization current to the stator coil 10 is controlled so that the estimated insulator temperature does not exceed the set temperature. .
- the accuracy of the estimated value of the insulator temperature is not high. Therefore, in consideration of the estimation accuracy of the insulator temperature, the set temperature is set to a low temperature far from the allowable temperature of the insulator 20, and the energization current to the stator coil 10 is ensured so that the temperature of the insulator 20 does not exceed the allowable temperature. Because of the control, high output cannot be achieved.
- the set temperature can be set to a temperature close to the allowable temperature of the insulator 20.
- energization to the stator coil 10 can be controlled under operating conditions close to the upper limit of the allowable temperature of the rotating electrical machine 100, a high-output rotating electrical machine 100 can be realized.
- the temperature detection element is inserted into the element insertion hole.
- an adhesive may be filled into the element insertion hole.
- the element insertion hole may be filled with a heat conductive resin. In this case, the responsiveness of temperature detection by the temperature detection element is enhanced.
- the element insertion hole is formed with a bottom, but the element insertion hole may penetrate the first flange portion.
- the molten resin is filled in the mold while the shaft provided in one mold is in contact with the other mold.
- the rigidity of the mold is increased, the deformation of the shaft due to pressure during molding is prevented, and the dimensional accuracy of the insulator can be increased.
- the core pieces arranged in an annular shape are press-fitted into the frame and fixed and integrated, but after arranging the core pieces in an annular shape, adjacent core pieces are welded together. May be fixed and integrated.
- the element insertion hole is formed in the wing portion on one side in the circumferential direction of the second flange portion, but the temperature detection element inserted into the element insertion hole is the coil outer layer portion of the concentrated winding coil.
- the element insertion hole is not limited to the wing part.
- FIG. 16 is a perspective view showing an insulator constituting a stator in a rotating electrical machine according to Embodiment 2 of the present invention
- FIG. 17 is an end view showing the insulator constituting the stator in the rotating electrical machine according to Embodiment 2 of the present invention
- 18 is a side view showing an insulator constituting a stator in a rotary electric machine according to Embodiment 2 of the present invention
- FIG. 19 is a cross-sectional view taken along arrow XIX-XIX in FIG. 17, and
- FIG. 20 is Embodiment 2 of the present invention.
- FIG. 21 is a perspective view showing a core assembly constituting a stator in the rotating electric machine
- FIG. 21 is a perspective view showing a core assembly constituting a stator in the rotating electric machine
- FIG. 21 is an end view showing the core assembly constituting the stator in the rotating electric machine according to Embodiment 2, and FIG. 22 is an embodiment of the invention.
- FIG. 23 is an end view showing a stator in the rotating electrical machine according to FIG. 2, and FIG. Side view of the motor,
- Figure 24 is a XXIV-XXIV arrow sectional view of FIG. 22. 22 and 23, the winding start side end and winding end side end of the conductor wire constituting the frame and the concentrated winding coil are omitted.
- the element insertion hole 26 ⁇ / b> A has a wing portion on one side in the width direction of the second flange portion 23, the hole direction is a direction perpendicular to the bottom surface of the second flange portion 23, and the second flange portion 23. It is formed so that it may open to the inner peripheral surface. Further, the opening side of the element insertion hole 26A is formed in an inclined surface and has an opening shape.
- the insulator 20A configured in this way is configured in the same manner as the insulator 20 except that the element insertion hole 26A is formed instead of the element insertion hole 26.
- a pair of insulators 20 ⁇ / b> A are disposed on the end surface of the core piece 11 such that the length direction of the body portion 21 coincides with the radial direction of the teeth 13 from both axial sides of the core piece 11.
- the conductor wire 31 is drawn into the body portion 21 from the introduction groove 25 formed in the second flange portion 23 of the insulator 20A on the one axial side, and is formed on the teeth 13 of the core piece 11 and both axial ends thereof.
- a core assembly 16A in which the concentrated winding coil 15 is wound around the core piece 11 is produced.
- the core assembly 16A is abutted with the end faces in the circumferential direction of the core back portion 12 of the core piece 11, arranged in a ring shape in the circumferential direction, and press-fitted and fixed to the annular frame 1 (not shown).
- the stator 8A is assembled. Further, the temperature detection element 27 is inserted into the element insertion hole 26A.
- the temperature detecting element 27 is inserted into the element insertion hole 26A formed in the second flange portion 23 of the insulator 20A disposed on the end surface of the core back portion 12 of the core piece 11. Since it is disposed, the same effect as in the first embodiment can be obtained.
- the detection portion 28 of the temperature detection element 27 is in contact with the coil outer layer portion at the corner portion of the coil end of the concentrated winding coil 15 via the pipe 30.
- the responsiveness of temperature detection by the temperature detection element 27 is enhanced.
- the temperature of the stator coil 10 can be directly detected, it is particularly effective when applied to a rotating electrical machine in which the heat resistance temperature of the stator coil 10 is lower than the heat resistance temperature of the insulator 20A.
- FIG. 25 is a sectional view showing a core assembly constituting a stator in a rotary electric machine according to Embodiment 3 of the present invention.
- the element insertion hole 26 ⁇ / b> B penetrates the second flange portion 23 with the wing portion on one side in the width direction of the second flange portion 23, with the hole direction being a direction perpendicular to the bottom surface of the second flange portion 23. Is formed. Further, a locking hole 32 as an engaging portion is formed on the bottom surface of the second flange portion 23 so as to reach the element insertion hole 26B from the side opposite to the tooth 13 with the hole direction as the length direction of the tooth 13. Yes. A flange portion 33 as an engaged portion is formed so as to protrude from the tip of the pipe 30 of the temperature detection element 27B.
- the insulator 20B configured in this manner is configured in the same manner as the insulator 20 except that the element insertion hole 26B and the locking hole 32 are formed.
- the temperature detection element 27B is inserted into the element insertion hole 26B formed in the second flange portion 23 of the insulator 20B disposed on the end surface of the core back portion 12 of the core piece 11. Since it is disposed, the same effect as in the first embodiment can be obtained.
- the flange 33 at the tip of the pipe 30 of the temperature detection element 27B inserted into the element insertion hole 26B enters the locking hole 32. It is possible to prevent a situation where 27B comes off. Further, since the temperature detection element 27B can be fixed to the second flange portion 23 simply by inserting the temperature detection element 27B into the element insertion hole 26B, the assembly of the stator is improved.
- the element insertion hole may be filled with a heat conductive resin or an adhesive after the temperature detection element is inserted into the element insertion hole.
- FIG. FIG. 26 is an end view showing an insulator constituting the stator in the rotary electric machine according to Embodiment 4 of the present invention
- FIG. 27 is a cross-sectional view taken along the line XXVII-XXVII in FIG.
- the winding start side end and winding end side end of the conductor wire constituting the frame and the concentrated winding coil are omitted.
- the stator 8C is configured by arranging the core assemblies 16C in a ring shape in the circumferential direction.
- the core assembly 16C is produced by arranging a pair of insulators 20C on the end face of the core piece 11, and winding the conductor wire 31 a predetermined number of times.
- the element insertion hole 26C is formed in the wing portion on the one side in the width direction of the second flange portion 23 of the insulator 20C so as to penetrate the second flange portion 23 with the hole direction as the length direction of the teeth 13. Yes.
- the temperature detection element 27 is inserted into the element insertion hole 26 ⁇ / b> C, and the detection unit 28 is disposed so as to be in contact with the coil outer layer portion at the corner portion of the coil end of the concentrated winding coil 15 via the pipe 30.
- the temperature detecting element 27 is inserted into the element insertion hole 26 ⁇ / b> C formed in the second flange portion 23 of the insulator 20 ⁇ / b> C disposed on the end surface of the core back portion 12 of the core piece 11. Since it is disposed, the same effect as in the first embodiment can be obtained.
- the lead wire 29 of the temperature detection element 27 does not protrude in the axial direction, and the axial dimension of the rotating electrical machine can be reduced. It is effective for applications where dimensional constraints in the axial direction are severe.
- the element insertion hole is formed so as to penetrate the second flange portion in the radial direction.
- the element insertion hole penetrates the second flange portion in the radial direction.
- the opening edge portion of the element insertion hole that opens to the bottom surface of the second flange portion does not contact the conductor wire during winding, so that the insulating coating of the conductor wire is not damaged.
- the teeth of the core piece extend radially inward from the circumferential center of the inner peripheral surface of the core back portion, but the teeth extend from the circumferential center of the inner peripheral surface of the core back portion. There is no need to extend.
- the annular side stator core can be produced by arranging the core pieces in the circumferential direction by bringing the circumferential side surfaces of the core back portion into contact with each other, the length of the core back portion extending on both sides in the circumferential direction of the teeth. May be different.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
図1はこの発明の実施の形態1に係る回転電機を示す端面図、図2はこの発明の実施の形態1に係る回転電機におけるステータを示す端面図、図3はこの発明の実施の形態1に係る回転電機におけるステータを示す側面図、図4はこの発明の実施の形態1に係る回転電機におけるステータを示す斜視図、図5は図2のV-V矢視断面図、図6はこの発明の実施の形態1に係る回転電機におけるステータを構成するコアアッセンブリを示す斜視図、図7はこの発明の実施の形態1に係る回転電機におけるステータを構成するコアアッセンブリを示す端面図、図8はこの発明の実施の形態1に係る回転電機におけるステータを構成するコアアッセンブリを示す側面図、図9は図8のIX-IX矢視断面図、図10はこの発明の実施の形態1に係る回転電機におけるステータを構成するインシュレータを示す斜視図、図11はこの発明の実施の形態1に係る回転電機におけるステータを構成するインシュレータを示す端面図、図12はこの発明の実施の形態1に係る回転電機におけるステータを構成するインシュレータを示す側面図、図13は図11のXIII-XIII矢視断面図、図14はこの発明の実施の形態1に係る回転電機におけるステータを構成する温度検出素子を示す正面図、図15はこの発明の実施の形態1に係る回転電機におけるステータを構成する温度検出素子を示す側面図である。なお、図2、図3および図4では、フレームが省略されている。また、図1、図2、図3および図4では、集中巻コイルを構成する導体線の巻き始め側端部および巻き終わり側端部が省略されている。
温度検出素子27がインシュレータ20の第2フランジ部23に形成された素子挿入穴26に挿入されて配設されているので、回転電機100の小型化が図られる。
素子挿入穴26の穴方向が軸方向となっているので、温度検出素子27のリード線29が径方向に突出せず、回転電機100の径方向寸法を縮小でき、径方向の寸法制約が厳しい用途に有効である。
また、上記実施の形態1では、素子挿入穴が第2フランジ部の周方向一側の翼部に形成されているが、素子挿入穴に挿入された温度検出素子が集中巻コイルのコイル外層部の温度を検出できればよく、素子挿入穴の形成位置は翼部に限定されない。
図16はこの発明の実施の形態2に係る回転電機におけるステータを構成するインシュレータを示す斜視図、図17はこの発明の実施の形態2に係る回転電機におけるステータを構成するインシュレータを示す端面図、図18はこの発明の実施の形態2に係る回転電機におけるステータを構成するインシュレータを示す側面図、図19は図17のXIX-XIX矢視断面図、図20はこの発明の実施の形態2に係る回転電機におけるステータを構成するコアアッセンブリを示す斜視図、図21はこの発明の実施の形態2に係る回転電機におけるステータを構成するコアアッセンブリを示す端面図、図22はこの発明の実施の形態2に係る回転電機におけるステータを示す端面図、図23はこの発明の実施の形態2に係る回転電機におけるステータを示す側面図、図24は図22のXXIV-XXIV矢視断面図である。なお、図22および図23では、フレームおよび集中巻コイルを構成する導体線の巻き始め側端部および巻き終わり側端部が省略されている。
図25はこの発明の実施の形態3に係る回転電機におけるステータを構成するコアアッセンブリを示す断面図である。
図26はこの発明の実施の形態4に係る回転電機におけるステータを構成するインシュレータを示す端面図、図27は図26のXXVII-XXVII矢視断面図である。なお、図26では、フレームおよび集中巻コイルを構成する導体線の巻き始め側端部および巻き終わり側端部が省略されている。
また、上記各実施の形態では、本願を電動機に適用した場合について説明しているが、本願を発電機に適用しても、同様の効果を奏する。
また、上記各実施の形態では、8極12スロットの回転電機について説明しているが、極数およびスロット数は、8極12スロットに限定されないことは言うまでもないことである。
Claims (7)
- 円環状のステータコア、および該ステータコアの各ティースに巻装された集中巻コイルを有するステータと、
ロータと、を備え、
胴部、および該胴部の長さ方向の両端に連結された一対のフランジ部を有するインシュレータが、それぞれ、該胴部の長さ方向を上記ティースの径方向に一致させて、該胴部の底面を該ティースの軸方向両端面に沿わせて配置され、
上記集中巻コイルが、導体線を、上記ティースの軸方向両端の上記胴部と上記一対のフランジ部とにより形成される凹空間内を通って、該ティースのまわりを多層に巻かれて構成されている回転電機において、
上記一対のフランジ部の一方のフランジ部が、上記ステータコアのコアバックの端面上に配置され、
温度検出素子が上記一方のフランジ部に形成された素子挿入穴に挿入されて上記集中巻コイルのコイルエンドの温度を検出可能に設置されていることを特徴とする回転電機。 - 上記素子挿入穴は、穴方向を軸方向として上記一方のフランジ部に形成されていることを特徴とする請求項1記載の回転電機。
- 上記素子挿入穴は、穴方向を径方向として上記一方のフランジ部に形成されていることを特徴とする請求項1記載の回転電機。
- 上記素子挿入穴は、上記凹空間と隔離されて上記一方のフランジ部に形成されていることを特徴とする請求項1から請求項3のいずれか1項に記載の回転電機。
- 上記温度検出素子は、被係合部を有し、
上記温度検出素子は、上記温度検出素子が上記素子挿入穴に挿入されたときに上記被係合部に係合し、上記温度検出素子の抜けを阻止する係合部を有していることを特徴とする請求項1から請求項4のいずれか1項に記載の回転電機。 - 樹脂が上記素子挿入穴と上記温度検出素子との間の隙間に充填されていることを特徴とする請求項1から請求項4のいずれか1項に記載の回転電機。
- 上記樹脂は接着剤であることを特徴とする請求項6記載の回転電機。
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DE112013006739.0T DE112013006739T5 (de) | 2013-02-27 | 2013-02-27 | Elektrische Rotationsmaschine |
CN201380073871.XA CN105009426B (zh) | 2013-02-27 | 2013-02-27 | 旋转电机 |
US14/758,817 US10680481B2 (en) | 2013-02-27 | 2013-02-27 | Rotary electric machine |
JP2015502625A JP5959715B2 (ja) | 2013-02-27 | 2013-02-27 | 回転電機 |
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JP2021035245A (ja) * | 2019-08-28 | 2021-03-01 | 日本電産サンキョー株式会社 | ステータおよびモータ |
WO2024070367A1 (ja) * | 2022-09-29 | 2024-04-04 | 株式会社Ihi | 過給機 |
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JP6221804B2 (ja) * | 2014-02-13 | 2017-11-01 | トヨタ自動車株式会社 | 回転電機のステータ |
WO2017088082A1 (zh) * | 2015-11-25 | 2017-06-01 | 巨铠实业股份有限公司 | 电机结构 |
JP2019205260A (ja) | 2018-05-22 | 2019-11-28 | 本田技研工業株式会社 | ステータおよび回転電機 |
CN113675965B (zh) * | 2020-12-07 | 2023-04-18 | 博格华纳动力驱动系统(天津)有限公司 | 一种电机定子及电机 |
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