WO2008012880A1 - Machine dynamo-électrique - Google Patents
Machine dynamo-électrique Download PDFInfo
- Publication number
- WO2008012880A1 WO2008012880A1 PCT/JP2006/314774 JP2006314774W WO2008012880A1 WO 2008012880 A1 WO2008012880 A1 WO 2008012880A1 JP 2006314774 W JP2006314774 W JP 2006314774W WO 2008012880 A1 WO2008012880 A1 WO 2008012880A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stator core
- stator
- magnetic thin
- core
- axial direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/22—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators
-
- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/04—Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
- H02K9/227—Heat sinks
Definitions
- the present invention relates to a rotating electrical machine such as a generator, a motor, and a generator motor mounted on a passenger car, a truck, or the like.
- a notch having an L-shaped cross-section for fitting is formed in a ring shape by cutting or the like on the outer peripheral portions of both axial end surfaces of a cylindrical stator core.
- a pair of hook-shaped frames are fitted into the notches of the stator core from both sides in the axial direction, and the stator is in-row coupled to the pair of frames (see, for example, Patent Document 1). .
- the stator core is formed in a cylindrical shape by winding and laminating strip-shaped steel plates in a spiral shape.
- a groove-shaped recess extending in the axial direction is provided on the outer peripheral portion of the stator core.
- both axial end surfaces of the stator core are formed as flat surfaces.
- the pair of flange-shaped frame forces are attached to both axial end surfaces of the stator core from both sides in the axial direction, and are fastened by through bolts arranged in the recesses. Thereby, the stator core is pressed and clamped from both sides in the axial direction by a pair of frames (see, for example, Patent Document 2).
- Patent Document 1 Japanese Patent Laid-Open No. 62-88442
- Patent Document 2 JP 2002-186232 A
- the stator iron core and the frame are in-row coupled, so the same roundness and coaxiality are required for both in-row portions. That is, the outer peripheral surface of the L-shaped notch formed in the outer peripheral portion of the stator core to be in-row coupled and the inner peripheral surface of the opening edge of the frame may have the same roundness and coaxiality. Required. However, the outer peripheral surface of the notch of the stator core and the inner peripheral surface of the opening edge of the frame It has been difficult to produce such that have the same roundness and coaxiality. As a result, a minute gap has formed between the outer peripheral surface of the notch of the stator core and the inner peripheral surface of the opening edge of the frame.
- an exhaust hole is formed in the frame in the vicinity of the coil end of the stator coil in order to cool the stator coil, which is a heat generating component. Therefore, when the vehicle is running, salt water or muddy water that has entered the frame through the exhaust hole enters the gap between the stator core and the in-row part of the frame. Then, salt water and muddy water stay in the gap of the in-row part to promote the acidity of the stator core, and the in-row part of the parenthesis is close to the coil end of the stator coil. A leak path is easily formed between the coil and the frame serving as a ground, and insulation failure is likely to occur.
- stator core is pressed and clamped between the pair of frames by the tightening force of the through bolts. Therefore, the abutting portion between the stator core and the frame Thus, the occurrence of the above-described insulation failure, in which gaps are difficult to occur, is suppressed.
- recess is formed so as to extend in the axial direction on the outer peripheral portion of the stator core, there is a problem in that the magnetic resistance of the magnetic circuit increases and the output decreases.
- the present invention has been made to solve the above-described problems, and suppresses the occurrence of insulation failure due to the oxidation of the stator core without lowering the output, and the stator coil.
- the purpose is to obtain a rotating electric machine that efficiently transmits the heat generated in the cylinder to the frame and suppresses the temperature rise of the stator.
- the present invention is formed in a bowl shape, each having a cylindrical stator core in which slots opened on the inner diameter side are arranged in the circumferential direction, and a stator coil mounted on the slot.
- a pair of frames in which the fitting grooves are formed on the inner periphery of the bowl-shaped opening over the entire circumference, and the outer peripheral portions at both ends in the axial direction of the stator core are fitted and held in the fitting grooves;
- a rotor disposed coaxially with the stator core in the stator core and rotatably supported by the pair of frames; an axis direction of the stator core with an axial direction on an outer diameter side of the stator core
- stator core is formed by laminating and integrating magnetic thin plates and has a cylindrical outer peripheral surface, and the fitting groove has a flat surface force perpendicular to the axis of the stator core. An annular axial surface and a radial surface force that is a cylindrical surface force centered on the axial center are also obtained. Furthermore, the stator iron core is sandwiched between the metal surfaces of the magnetic thin plates at both ends in the axial direction in close contact with each of the axial surfaces of the pair of frames over the entire circumference.
- the stator core since the stator core has the outer peripheral surface of the cylindrical surface, the magnetic path cross-sectional area of the core back constituting the magnetic circuit is not reduced, and the output decreases as the magnetic resistance increases. Is suppressed.
- both end surfaces in the axial direction of the stator core are pressed and clamped in close contact with each of the axial surfaces of the fitting grooves of the pair of frames, the end surfaces of the stator core and the shafts of the fitting grooves There is no gap between the end face and the penetration of salt water and muddy water between the end face of the stator core and the axial face of the fitting groove.
- FIG. 1 is a longitudinal sectional view showing an automotive alternator according to Embodiment 1 of the present invention.
- FIG. 2 is a perspective view showing a stator applied to an automotive alternator according to Embodiment 1 of the present invention.
- FIG. 3 is an electric circuit diagram of the automotive alternator according to Embodiment 1 of the present invention.
- FIG. 4 is a cross-sectional view of a main part for explaining the stator fixing structure in the automotive alternator according to Embodiment 1 of the present invention.
- FIG. 5 is a diagram for explaining a pressing process for a strip-shaped magnetic thin plate in a method for manufacturing a stator applied to an automotive alternator according to Embodiment 1 of the present invention.
- FIG. 6 is a plan view showing a belt-like magnetic thin plate obtained in the manufacturing process of the stator applied to the automotive alternator according to Embodiment 1 of the present invention.
- FIG. 7 is a perspective view showing a laminated body of strip-like magnetic thin plates obtained in the manufacturing process of the stator applied to the automotive alternator according to Embodiment 1 of the present invention.
- FIG. 8 is a perspective view showing a rectangular parallelepiped laminated core obtained in the manufacturing process of the stator applied to the automotive alternator according to Embodiment 1 of the present invention.
- FIG. 9 is a side view showing a winding assembly obtained in the manufacturing process of the stator applied to the automotive alternator according to Embodiment 1 of the present invention.
- FIG. 10 is a perspective view for explaining a step of bending a laminated core in a method for manufacturing a stator applied to an automotive alternator according to Embodiment 1 of the present invention.
- FIG. 11 is a longitudinal sectional view showing an embodiment of an automotive alternator according to Embodiment 1 of the present invention.
- FIG. 12 is a cross-sectional view of an essential part for explaining a stator fixing structure in a vehicle AC generator according to Embodiment 2 of the present invention.
- FIG. 13 is a cross-sectional view of a principal part for explaining a stator fixing structure in a vehicle AC generator according to Embodiment 3 of the present invention.
- FIG. 1 is a longitudinal sectional view showing an automotive alternator according to Embodiment 1 of the present invention
- FIG. 2 is a perspective view showing a stator applied to the automotive alternator according to Embodiment 1 of the present invention
- FIG. 3 is an electric circuit diagram of the vehicle alternator according to Embodiment 1 of the present invention
- FIG. 4 is a cross-sectional view of the main part for explaining the stator fixing structure in the vehicle alternator according to Embodiment 1 of the present invention. It is.
- a vehicular AC generator 100 includes a case 3 including a front bracket 1 and a rear bracket 2 as a substantially bowl-shaped aluminum frame.
- a shaft 4 rotatably supported, a pulley 5 fixed to an end of a shaft 4 extending to the front side of the case 3, and a rotor 6 fixed to the shaft 4 and accommodated in the case 3
- a fan 7 fixed to both axial end faces of the rotor 6, a stator 8 fixed to the inner wall surface of the case 3 so as to surround the outer periphery of the rotor 6, and a rear side of the shaft 4
- a slip ring 9 that is fixed and supplies current to the rotor 6, a pair of brushes 10 disposed in the case 3 so as to slide on the slip ring 9, and a brush holder 11 that houses the brush 10
- the stator 8 is electrically connected to the stator
- the rectifier 12 that rectifies the alternating current generated in 8 to direct current, the heat sink 13 fitted to the brush holder 11, and the regulator that is adhered to
- the rotor 6 is provided so as to cover a field magnetic wire 18 that generates a magnetic flux when an electric current flows, and a pair of first and second magnetic poles that are formed by the magnetic flux. It has 2 pole cores 1 and 20.
- the stator 8 includes a cylindrical stator core 15 and a stator coil 16 mounted on the stator core 15.
- the stator core 15 is provided with slots 15a extending in the axial direction at equal angular pitches in the circumferential direction at a rate of 2 per pole per phase with the opening directed toward the inner circumferential side.
- An insulator 17 is mounted in the slot 15a to ensure insulation between the stator core 15 and the stator coil 16.
- the stator coil 16 is composed of two three-phase AC wires 160 each formed by Y-connecting three phase wires 161. Then, two three-phase AC feeders 160 are connected to the rectifier 12 respectively.
- a fitting groove 21 having an L-shaped cross section is formed in an annular shape on the inner periphery of the opening edge portion of the front bracket 1 and the rear bracket 2.
- a plurality of front side flanges 22 and rear side flanges 23 are provided on the outer periphery of the opening edge of the base 2 so as to protrude in the outer diameter direction.
- the front side flange 22 is provided with a bolt hole 22a
- the rear side flange 23 is provided with a screw hole 23a.
- the fitting groove 21 having an L-shaped cross section includes an annular axial surface 21a that also has a flat surface force orthogonal to the shaft 4 axis, and a radial direction that is a cylindrical surface force about the shaft 4 axis.
- Surface 21b is a flat surface force orthogonal to the shaft 4 axis, and a radial direction that is a cylindrical surface force about the shaft 4 axis.
- Both ends in the axial direction of the stator core 15 are fitted in the fitting grooves 21 at the opening edges of the front bracket 1 and the rear bracket 2 in both axial directions, and through bolts 24 passed through the bolt holes 22a. Is fastened to the screw hole 23a, and the stator 8 is pressure-clamped by the case 3. At this time, the outer peripheral edge portions of both end surfaces in the axial direction of the stator core 15 are in the axial direction of the fitting groove 21 over the entire circumference due to the restraining force of the thrust F and reaction force R of the through bolt 24. Close to face 21a. Further, both end edges in the axial direction of the outer peripheral surface of the stator core 15 are engaged with 2 lb of the radial surface of the fitting groove 21, and the radial movement is restricted.
- a strip-shaped magnetic thin plate 31 is punched at a pitch p while moving a rolled steel plate 30 having a thickness of 0.3 mm in the direction of arrow A, for example.
- the strip-shaped magnetic thin plate 31 has a rectangular planar shape, and a tooth portion 3 lb extends from the core back portion 31c to one side in the width direction and is formed at a predetermined pitch in the longitudinal direction.
- the slot portion 31a is formed between the teeth portions 31b so as to open to one side in the width direction of the belt-like magnetic thin plate 31.
- the width of the tooth portion 31b at both ends in the longitudinal direction is half of the width of the other tooth portion 31b.
- the length of the strip-shaped magnetic thin plate 31 matches the circumferential length of the stator core 15.
- the punched strip-shaped magnetic thin plate 31 is laminated with the thickness of the stator core 15 in the axial direction by superimposing the slot portion 31a, the tooth portion 31b, and the cover portion 31c.
- the outer wall surface of the core back portion 31c of the strip-shaped magnetic thin plate 31 is laser-welded, for example, at the position where the longitudinal direction of the laminated body 32A is divided into, for example, four equal parts, and to the one end force in the lamination direction of the laminated body 32A.
- the laminated belt-like magnetic thin plates 31 are integrated together.
- each end force in the laminating direction of the laminated body 32A is reached to the other end.
- the outer wall surface of the core back portion 31c of the strip-shaped magnetic thin plate 31 is, for example, laser welded to integrate the laminated strip-shaped magnetic thin plate 31.
- the laminated belt-like magnetic thin plates 31 are integrated together by the five thin plate connecting welds 33, and a rectangular parallelepiped laminated core 32 is produced.
- the winding assembly 40 shown in FIG. 9 is produced.
- the winding assembly 40 is produced, for example, by continuously supplying twelve continuous conductor wires 41 formed by insulating a copper wire having a circular cross section to a winding forming apparatus (not shown) at the same time. Then, the twelve continuous conductor wires 41 are collectively bent and formed by the wire forming apparatus in a state of being arranged at one slot pitch.
- the winding assembly 40 is arranged by the number of slots at a 1-slot pitch, and the ends of the slot accommodating portions 42 separated from each other by 6 slots, which are adjacent to each other in the direction perpendicular to the paper surface in FIG. Are connected at the turn part 43.
- each continuous conductor wire 41 is separated by six slots.
- the upper slot accommodating portion 42 and the lower slot accommodating portion 42 are configured in a wave shape in which the upper end and the lower end are alternately connected by a turn portion 43.
- six end portions 41 a of the twelve continuous conductor wires 41 are extended from both ends of the wire assembly 40.
- the supply amount of the corresponding continuous conductor wire 41 is increased at a predetermined time, and the conductor end portion 44 bent in the subsequent process is extended from the turn portion 43 of the winding assembly 40.
- the insulator 17 is mounted in each slot 32 a of the rectangular parallelepiped laminated core 32.
- three wire assemblies 40 are mounted so as to be stacked in three layers in the slot depth direction, with the pair of slot accommodating portions 42 accommodated in the respective slot portions 32a of the rectangular parallelepiped laminated core 32.
- the laminated core 32 is bent into a cylindrical shape with the opening of the slot portion 32a directed toward the inner peripheral side in a state where the winding assembly 40 is mounted, and the laminated core 34 is obtained.
- both end surfaces of the bent laminated core 34 are butted together, and the outer periphery of the butted portion 46 is welded, for example, by laser welding to obtain a cylindrical stator core 15.
- Ends 41a of continuous conductor wire 41 extending to both ends of both ends of winding assembly 40 are extended so as to be adjacent to each other on both axial sides of butted portion 46 of stator core 15. And thus, the end portions 41 a of the continuous conductor wire 41 are connected to each other, and the accompanying connection portions 45 are formed on both sides of the butting portion 46 in the axial direction. Next, the conductor end portions 44 are connected to form the stator coil 16 shown in FIG.
- This stator coil 16 is composed of two three-phase AC wires 160 formed by Y-connecting three phase wires 161.
- the continuous conductor wire 41 is folded outside the slot 15a on the end face side of the stator core 15, and the inner and outer layers are connected to each other in the depth direction of the slot 15a every six slots. Consists of six shorelines that are alternately wound in a wave winding. Further, the turn portions 43 formed by folding the continuous conductor wire 41 outside the slot 15a on the end face side of the stator core 15 are arranged in three rows in the radial direction on both ends in the axial direction of the stator core 15. The coil ends 16a of the stator coil 16 are arranged in an orderly manner with a 1-slot pitch.
- the slot 3la, the teeth 31b, and the core back 31c of the strip-shaped magnetic thin plate 31 are overlapped in the axial direction so that the slot 15a, the teeth 15b, and the core back are overlapped.
- a current is supplied from the notch 25 to the field winding wire 18 via the brush 10 and the slip ring 9.
- magnetic flux is generated, the first pole core 19 is excited to the N pole, and the second pole core 20 is excited to the S pole.
- the pulley 5 is driven to rotate by the engine, and the rotor 6 rotates together with the shaft 4.
- a rotating magnetic field is applied to the stator coil 16, and an electromotive force is generated.
- the alternating electromotive force is rectified to direct current through the rectifier 12, and the magnitude of the voltage value is adjusted by the regulator 14 to charge the notch 25.
- the fan 7 is rotated in synchronization with the rotation of the rotor 6. Then, air is sucked into the case 3 from the intake holes la, 2a formed in the end surfaces of the front bracket 1 and the rear bracket 2. The air sucked into the case 3 flows to the rotor 6 in the axial direction, is bent in the centrifugal direction by the fan 7, and the coil end of the stator coil 16 is formed on the side surfaces of the front bracket 1 and the rear bracket 2. It is discharged to the outside through exhaust holes lb and 2b formed close to 16a. This air flow cools heat generating components such as the rectifier 12, the regulator 14, and the stator coil 16.
- the first pole core 19 excited to the N pole exits.
- the magnetic flux enters the teeth 15b of the stator core 15 through the air gap between the rotor 6 and the stator 8, enters the adjacent teeth 15b through the core back 15c, and passes through the air gap.
- a closed magnetic circuit enters the second pole core 20 excited by the S pole. At this time, the amount of magnetic flux that flows through the magnetic circuit and determines the output of the generator is determined by the magnetomotive force of the rotating magnetic field generated by the rotor 6 and the magnetic resistance of the magnetic circuit.
- the magnetic circuit is compared with a conventional stator core in which a recess for passing through bolts is formed on the outer peripheral surface.
- the cross-sectional area of the magnetic path is increased as much as there is no recess, the magnetic resistance is reduced, and the output can be increased.
- both end surfaces of the stator core 15 are pressed and clamped to the axial surface 21a of the fitting groove 21 of the front bracket 1 and the rear bracket 2 by the fastening force of the through bolts 24, the stator core Even if the end face of 15 does not have perfect flatness, and the end face of the stator core 15 and the axial direction surface 21a are not completely parallel, both end faces of the stator core 15 and the axial face Can be in close contact with 21a. Therefore, as shown by arrow B in FIG. 4, even if salt water or muddy water enters through the exhaust holes lb, 2b, it cannot enter between the end surface of the stator core 15 and the axial surface 21a. Therefore, it is possible to suppress the occurrence of insulation failure caused by salt water or muddy water staying in the fitting portion (the fitting portion between the end surface of the stator core 15 and the axial surface 21a) close to the coil end 16a. .
- a minute gap force S is generated between the outer peripheral surface of the stator core 15 and the radial surface 21b of the fitting groove 21.
- the distance ⁇ between the fitting portion between the outer peripheral surface of the stator core 15 and the radial surface 21b and the coil end 16a is equal to the end surface of the stator core 15 and the axial surface 21a. This is significantly longer than the distance between the fitting portion and the coil end 16a. Therefore, even if salt water or muddy water stays in the fitting portion between the outer peripheral surface of the stator core 15 and the radial surface 21b and promotes the oxidation of the stator core 15, the leak path will be between the case 3 and the coil end 16 a. Not formed between
- the stator core 15 is manufactured by laminating a thin strip-like magnetic thin plate 31 and bending it into a cylindrical shape at the same time, and welding the butted portion 46, so that it has a high degree of cylindricity. Stator core 15 to be obtained. At the same time, the strip-shaped magnetic thin plate constituting the stator core 15 31 A gap is generated between them, so that intrusion between the strip-like magnetic thin plates 31 of salt water or muddy water is prevented.
- each phase wire 161 constituting the stator coil 16 has a continuous conductor wire 41 folded back outside the slot 15a on the end face side of the stator core 15, and within each slot 15a.
- the turn portions 43 folded back outside the slots 15a on the end face side of the stator core 15 are arranged in three rows in the radial direction on the both ends in the axial direction of the stator core 15, and are spaced by one slot pitch in the circumferential direction.
- the coil ends 16a of the stator coil 16 are arranged in an orderly manner. Therefore, since the outer diameter shape of the coil end 16a is configured uniformly in the circumferential direction, the distance between the coil end 16a and the case 3 can be kept constant, and the dielectric strength of the coil end 16a can be increased. .
- stator core 15 is made by laminating the strip-shaped magnetic thin plates 31 that are not covered with the insulating film, the end surface of the stator core 15 and the axial surface 21a of the fitting groove 21 are formed. They are in contact with the same metal surface. Furthermore, the end face of the stator core 15 and the axial direction face 21a pass, and the bolt 24 is in a tight state due to the fastening force. Therefore, the contact thermal resistance between the end face of the stator core 15 and the axial direction surface 21a is remarkably reduced. As a result, the heat generated in the stator coil 16 is efficiently transferred to the case 3 through the stator core 15 and radiated from the surface of the case 3 having a large surface area. Can be suppressed.
- the AC generator 100 for the vehicle is fastened with the mounting flange portions 26 and 27 provided on the front bracket 1 and the rear bracket 2 to the vehicle-side grounding portion 28 using mounting bolts (not shown), It is attached. As a result, the front bracket 1 and the rear bracket 2 are securely grounded, and an earth float is prevented from occurring.
- the stator core 15 is manufactured by laminating the strip-shaped magnetic thin plates 31 that are not covered with the insulating coating, and the stator core 15 is attached to the case 3 by the fastening force of the through bolt 24. Since salt water and muddy water are sandwiched between the belt-like magnetic thin plates 31 and the stator core 15 Good electrical conductivity is ensured without entering between the axial plane 2 la. Therefore, since the front bracket 1 and the rear bracket 2 are securely electrically connected via the stator core 15, it is not necessary to attach both the mounting flange portions 26 and 27 to the vehicle-side grounding portion 28. The degree of freedom in mounting the AC generator 100 can be increased. For example, as shown in FIG.
- the mounting flange portion 27 is eliminated, and the mounting flange portion 27 provided on the front bracket 1 is fastened to the vehicle-side grounding portion 28 using mounting bolts (not shown). But ... In this case, it is not necessary to connect the ground side wiring to the rear bracket 2, and the vehicle wiring can be easily handled.
- FIG. 12 is a cross-sectional view of a main part for explaining the stator fixing structure in the vehicle alternator according to Embodiment 2 of the present invention.
- an insulating coating 29 is coated on the outer peripheral surface of the stator core 15.
- the strip-shaped magnetic thin plates 31 are laminated and integrated to produce a cuboid laminated core 32, and the laminated iron core 32 to which the winding assembly 40 is attached is obtained.
- the stator core 15 is fabricated by bending into a cylindrical shape and butting both end faces of the laminated core 34 bent into a cylindrical shape.
- an insulating resin made of epoxy-based resin is applied to the outer peripheral surface of the stator core 15 to produce the stator core 15 in which the insulating coating 29 is coated on the entire outer peripheral surface.
- the stator is formed at the fitting portion between the outer peripheral surface of the stator core 15 and the radial surface 21 b of the fitting groove 21.
- the metal surface of iron core 15 is exposed. Therefore, when salt water or muddy water stays between the outer peripheral surface of the stator core 15 and the radial surface 21b, the acidity of the stator core 15 is promoted.
- the oxide of the stator core 15 is formed between the outer peripheral surface of the stator core 15A and the radial surface 21b, the stator core 15 is pressed toward the inner diameter side, and in the worst case, the stator core 15 is pressed. A situation occurs in which the iron core 15 is displaced to the inner diameter side and interferes with the rotor 6.
- the insulating coating 29 is applied so as to cover the entire outer peripheral surface of the stator core 15.
- the insulating coating 29 is applied to the outer peripheral surface of the stator core 15. It only needs to be formed so as to cover at least a region facing the radial surface 21b of the fitting groove 21.
- FIG. 13 is a cross-sectional view of a main part for explaining a stator fixing structure in an automotive alternator according to Embodiment 3 of the present invention.
- the stator core 15A is formed by laminating a predetermined number of strip-shaped magnetic thin plates 31 having a thickness of 0.1 mm (tl), for example, and, for example, 1. a strip-shaped magnetic thin plate 31 A having a thickness of Omm (t2), for example. It is produced by laminating the laminated body of the magnetic thin plate 31 on both ends and integrating the laminated body of the strip-like magnetic thin plates 31 and 31A into a welded shape, bending it into a cylindrical shape, and welding the butted portions of both end faces. Other configurations are the same as those in the first embodiment.
- Embodiment 3 since the strip-shaped magnetic thin plate 31A having a thick plate force is disposed at both ends of the laminated body that is bent into a cylindrical shape, the rigidity of the laminated body is enhanced. Therefore, when the laminate is bent into a cylindrical shape, the undulation phenomenon that occurs on both end faces is suppressed. Thereby, the flatness of both end faces of the stator core 15A is increased, and the end face of the stator core 15A and the axial surface 2 la of the fitting groove 21 are brought into close contact with each other without any gap. Therefore, it is possible to further suppress the occurrence of insulation failure caused by salt water or muddy water remaining between the end surface of the stator core 15A and the axial surface 21a.
- stator core 15A Is formed between the outer peripheral surface of the stator core 15A and the radial surface 21b.
- the formation of the oxide of the stator core 15A acts to press the stator core 15A toward the inner diameter side.
- the strip-shaped magnetic thin plate 31A with thick plate force is arranged at both ends of the stator core 15A. Therefore, the rigidity against displacement in the radial direction of the stator core 15A is increased.
- the strip-shaped magnetic thin plate 31A having a thick plate force is arranged at both ends in the axial direction of the stator core 15A.
- the strip-shaped magnetic thin plate 31A having a thick plate force is always fixed. It is not necessary to arrange at both ends of the core 15A in the axial direction. It may be arranged only at one end of the stator core 15A in the axial direction.
- the fans are disposed at both ends of the rotor in the axial direction.
- the fans are not necessarily disposed at both ends of the rotor in the axial direction. It may be arranged only on the rear side of the rotor. In this case, the intake and exhaust holes should be at least formed in the rear bracket.
- stator slot is applied to a vehicle alternator manufactured at a rate of 2 per pole per phase.
- This can be applied to a vehicular AC generator in which the number of child slots is n per pole per phase (where n is an integer of 2 or more).
- the force stator coil may be configured with one three-phase AC winding, assuming that the stator coil is configured with two three-phase AC winding forces.
- each three-phase AC power wire is assumed to be configured by Y-connection of three phase wires.
- Each three-phase AC power wire may be configured by ⁇ -connection of three phase wires! /.
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- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Synchronous Machinery (AREA)
Description
Claims
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/307,480 US8134272B2 (en) | 2006-07-26 | 2006-07-26 | Dynamoelectric machine |
| PCT/JP2006/314774 WO2008012880A1 (fr) | 2006-07-26 | 2006-07-26 | Machine dynamo-électrique |
| EP06781686.8A EP2045896B1 (en) | 2006-07-26 | 2006-07-26 | Dynamo-electric machine |
| KR1020087029243A KR101030844B1 (ko) | 2006-07-26 | 2006-07-26 | 회전 전기기계 |
| JP2006549732A JP5005354B2 (ja) | 2006-07-26 | 2006-07-26 | 回転電機 |
| CN200680055393XA CN101501958B (zh) | 2006-07-26 | 2006-07-26 | 旋转电机 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2006/314774 WO2008012880A1 (fr) | 2006-07-26 | 2006-07-26 | Machine dynamo-électrique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2008012880A1 true WO2008012880A1 (fr) | 2008-01-31 |
Family
ID=38981195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2006/314774 Ceased WO2008012880A1 (fr) | 2006-07-26 | 2006-07-26 | Machine dynamo-électrique |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8134272B2 (ja) |
| EP (1) | EP2045896B1 (ja) |
| JP (1) | JP5005354B2 (ja) |
| KR (1) | KR101030844B1 (ja) |
| CN (1) | CN101501958B (ja) |
| WO (1) | WO2008012880A1 (ja) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013247837A (ja) * | 2012-05-29 | 2013-12-09 | Asmo Co Ltd | モータ |
| JP2014103827A (ja) * | 2012-11-22 | 2014-06-05 | Panasonic Corp | ブラシレスモータ及びこれを搭載した洗濯機 |
| JP2014147179A (ja) * | 2013-01-28 | 2014-08-14 | Asmo Co Ltd | モータ |
| US10148140B2 (en) | 2013-01-28 | 2018-12-04 | Denso Corporation | Motor |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2925895B1 (fr) * | 2007-12-28 | 2010-02-05 | Messier Dowty Sa | Procede de fabrication d'une piece metallique renforcee de fibres ceramiques |
| DE102011083868A1 (de) * | 2011-09-30 | 2013-04-04 | Robert Bosch Gmbh | Kühlkreislaufpumpe für ein Kraftfahrzeug |
| EP2768123B1 (en) * | 2011-10-06 | 2017-06-21 | Mitsubishi Electric Corporation | Electric motor |
| JP5607708B2 (ja) * | 2012-12-04 | 2014-10-15 | ファナック株式会社 | 電動機の固定子 |
| US10164487B2 (en) * | 2013-01-28 | 2018-12-25 | Asmo Co., Ltd. | Motor, method for manufacturing magnetic plate, and method for manufacturing stator |
| EP2793361B1 (de) * | 2013-04-17 | 2017-08-30 | Siemens Aktiengesellschaft | Rotierende elektrische Maschine |
| MX390850B (es) | 2015-11-20 | 2025-03-21 | Mitsubishi Electric Corp | Maquina electrica rotatoria. |
| EP3468014B1 (en) * | 2016-06-01 | 2021-07-21 | Mitsubishi Electric Corporation | Electric rotary machine |
| KR102768391B1 (ko) * | 2019-12-26 | 2025-02-13 | 엘지전자 주식회사 | 전자식 클러치 결합형 모터 조립체 및 이를 포함하는 세탁기의 구동장치 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6288442A (ja) | 1985-10-15 | 1987-04-22 | Matsushita Electric Ind Co Ltd | テレビジヨン受像機用のブ−スタ |
| JPH04150746A (ja) * | 1990-10-09 | 1992-05-25 | Toshiba Corp | 回転電機 |
| JPH1094200A (ja) * | 1996-09-18 | 1998-04-10 | Sawafuji Electric Co Ltd | コンデンサ励磁式発電機におけるステータコア構造 |
| JP2001112197A (ja) * | 1999-10-06 | 2001-04-20 | Denso Corp | 回転電機 |
| JP2001211619A (ja) * | 2000-01-25 | 2001-08-03 | Mitsubishi Electric Corp | 車両用交流発電機 |
| JP2001275283A (ja) * | 2000-03-28 | 2001-10-05 | Mitsubishi Electric Corp | 車両用交流発電機の固定子 |
| JP2002153008A (ja) * | 2000-11-09 | 2002-05-24 | Hitachi Ltd | 回転電機 |
| JP2002186232A (ja) | 1997-10-17 | 2002-06-28 | Denso Corp | 車両用交流発電機 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63265532A (ja) * | 1987-04-22 | 1988-11-02 | Mitsubishi Electric Corp | 車両用交流発電機のステ−タコア |
| CN1200591A (zh) * | 1997-05-26 | 1998-12-02 | 株式会社电装 | 车用发电机 |
| JPH118138A (ja) * | 1997-06-15 | 1999-01-12 | Mitsutsu Electric Kk | 同軸変圧器、同軸変圧器群、多軸同軸変圧器、同軸直交変圧器、移相同軸直交変圧器、移相調整同軸直交変圧器、多相移相調整同軸直交変圧器、同軸直交変圧器群、移相同軸直交変圧器群、相変成同軸直交変圧器、三相単相同軸直交変圧器、多相単相同軸直交変圧器群、可変電圧調整同軸変圧器、可変移相同軸直交変圧器、全変成同軸直交変圧器、消磁装置付変圧器、冷却マニホルド付変圧器、リアクトル |
| JPH11318047A (ja) | 1998-05-06 | 1999-11-16 | Sankyo Seiki Mfg Co Ltd | トロイダル巻式回転電機の電機子構造 |
| JPH11332140A (ja) | 1998-05-08 | 1999-11-30 | Sankyo Seiki Mfg Co Ltd | 放射リブ巻線式回転電機の電機子構造 |
| JP3430016B2 (ja) * | 1998-06-05 | 2003-07-28 | 三菱電機株式会社 | 車両用交流発電機 |
| JP3913903B2 (ja) * | 1998-07-21 | 2007-05-09 | 三菱電機株式会社 | 車両用交流発電機 |
| JP2001119883A (ja) * | 1999-10-15 | 2001-04-27 | Mitsubishi Electric Corp | 車両用交流発電機 |
| JP4665275B2 (ja) | 1999-11-22 | 2011-04-06 | シンフォニアテクノロジー株式会社 | 高耐熱回転電機 |
| JP3400776B2 (ja) * | 1999-12-14 | 2003-04-28 | 三菱電機株式会社 | 交流発電機 |
| JP3400760B2 (ja) * | 1999-12-17 | 2003-04-28 | 三菱電機株式会社 | 交流発電機 |
| JP3432474B2 (ja) * | 1999-12-27 | 2003-08-04 | 三菱電機株式会社 | 回転電機の固定子 |
| JP3783832B2 (ja) * | 2000-03-30 | 2006-06-07 | 三菱電機株式会社 | 車両用交流発電機 |
| DE10051499A1 (de) * | 2000-10-17 | 2002-04-25 | Bosch Gmbh Robert | Blech-Lamellen-Paket |
| JP3946950B2 (ja) * | 2000-10-17 | 2007-07-18 | 三菱電機株式会社 | 車両用交流発電機 |
| JP2003333771A (ja) | 2002-05-16 | 2003-11-21 | Mitsuba Corp | 回転電機の積層コア |
| JP2004023916A (ja) * | 2002-06-18 | 2004-01-22 | Denso Corp | 回転電機の固定子 |
| JP2004112961A (ja) * | 2002-09-20 | 2004-04-08 | Matsushita Electric Ind Co Ltd | 樹脂モールドモータ |
| JP2004336883A (ja) * | 2003-05-07 | 2004-11-25 | Mitsubishi Electric Corp | 車両用交流発電機 |
-
2006
- 2006-07-26 US US12/307,480 patent/US8134272B2/en not_active Expired - Fee Related
- 2006-07-26 EP EP06781686.8A patent/EP2045896B1/en not_active Ceased
- 2006-07-26 KR KR1020087029243A patent/KR101030844B1/ko not_active Expired - Fee Related
- 2006-07-26 WO PCT/JP2006/314774 patent/WO2008012880A1/ja not_active Ceased
- 2006-07-26 CN CN200680055393XA patent/CN101501958B/zh not_active Expired - Fee Related
- 2006-07-26 JP JP2006549732A patent/JP5005354B2/ja not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6288442A (ja) | 1985-10-15 | 1987-04-22 | Matsushita Electric Ind Co Ltd | テレビジヨン受像機用のブ−スタ |
| JPH04150746A (ja) * | 1990-10-09 | 1992-05-25 | Toshiba Corp | 回転電機 |
| JPH1094200A (ja) * | 1996-09-18 | 1998-04-10 | Sawafuji Electric Co Ltd | コンデンサ励磁式発電機におけるステータコア構造 |
| JP2002186232A (ja) | 1997-10-17 | 2002-06-28 | Denso Corp | 車両用交流発電機 |
| JP2001112197A (ja) * | 1999-10-06 | 2001-04-20 | Denso Corp | 回転電機 |
| JP2001211619A (ja) * | 2000-01-25 | 2001-08-03 | Mitsubishi Electric Corp | 車両用交流発電機 |
| JP2001275283A (ja) * | 2000-03-28 | 2001-10-05 | Mitsubishi Electric Corp | 車両用交流発電機の固定子 |
| JP2002153008A (ja) * | 2000-11-09 | 2002-05-24 | Hitachi Ltd | 回転電機 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2045896A4 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013247837A (ja) * | 2012-05-29 | 2013-12-09 | Asmo Co Ltd | モータ |
| JP2014103827A (ja) * | 2012-11-22 | 2014-06-05 | Panasonic Corp | ブラシレスモータ及びこれを搭載した洗濯機 |
| JP2014147179A (ja) * | 2013-01-28 | 2014-08-14 | Asmo Co Ltd | モータ |
| US10148140B2 (en) | 2013-01-28 | 2018-12-04 | Denso Corporation | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101501958B (zh) | 2011-10-26 |
| EP2045896A4 (en) | 2016-03-02 |
| KR101030844B1 (ko) | 2011-04-22 |
| EP2045896B1 (en) | 2019-09-04 |
| JP5005354B2 (ja) | 2012-08-22 |
| EP2045896A1 (en) | 2009-04-08 |
| US20090200887A1 (en) | 2009-08-13 |
| US8134272B2 (en) | 2012-03-13 |
| KR20090006868A (ko) | 2009-01-15 |
| JPWO2008012880A1 (ja) | 2009-12-17 |
| CN101501958A (zh) | 2009-08-05 |
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