WO2008096897A1 - Induit et procédé de fabrication de ce même - Google Patents

Induit et procédé de fabrication de ce même Download PDF

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Publication number
WO2008096897A1
WO2008096897A1 PCT/JP2008/052385 JP2008052385W WO2008096897A1 WO 2008096897 A1 WO2008096897 A1 WO 2008096897A1 JP 2008052385 W JP2008052385 W JP 2008052385W WO 2008096897 A1 WO2008096897 A1 WO 2008096897A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
rotor core
end plate
plate
core
Prior art date
Application number
PCT/JP2008/052385
Other languages
English (en)
Japanese (ja)
Inventor
Kazutaka Tatematsu
Hiroaki Urano
Original Assignee
Toyota Jidosha Kabushiki Kaisha
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Jidosha Kabushiki Kaisha filed Critical Toyota Jidosha Kabushiki Kaisha
Publication of WO2008096897A1 publication Critical patent/WO2008096897A1/fr

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Classifications

    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/50—Structural details of electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/42—Drive Train control parameters related to electric machines
    • B60L2240/425—Temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • the present invention relates to a rotor and a manufacturing method thereof, and more particularly to a rotor of a rotating electric machine having a rotor core and an end plate and a manufacturing method thereof.
  • a rotor having a rotor core and an end plate is conventionally known.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2 00 0-3 1 6 2 4 3
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2 00 0-3 1 6 2 4 3
  • an end plate is formed on a mouth core in which magnets are embedded. After fixing the magnet, it is disclosed that an adhesive for fixing the magnet is supplied through a through hole provided in the end plate.
  • Patent Document 2 Japanese Patent Laid-Open No. 2000-062 3 8 5 31 (Patent Document 2) describes a rotor in which a stainless steel plate is provided between a rotor core and an end plate.
  • the rotor generates heat during operation of the rotating electrical machine.
  • the magnet embedded in the rotor core is thermally demagnetized, and the drive efficiency of the rotating electrical machine is reduced.
  • a gap is formed between the rotor core and the end plate due to the unevenness of the surface. By increasing the gap, the heat transfer efficiency from the rotor core to the end plate is lowered, and the heat dissipation efficiency of the rotor is lowered.
  • Patent Documents 1 and 2 do not describe a configuration for reducing the gap between the rotor core and the end plate. Disclosure of the invention
  • An object of the present invention is to provide a rotor with high heat dissipation efficiency and a method for manufacturing the same.
  • a rotor according to the present invention includes a rotor core having a first axial end surface, and a rotor core An end plate having a second axial end surface opposed to the first axial end surface, and provided between the rotor core and the end plate, and the first and second shafts. And an unevenness absorbing portion that can be deformed according to the unevenness of the direction end face.
  • the formation of the unevenness absorbing portion that absorbs the unevenness of the first and second axial end faces suppresses the generation of a gap between the rotor core and the end plate.
  • the heat transfer efficiency from the rotor core to the end plate can be increased, and the heat dissipation characteristics of the rotor can be improved.
  • the unevenness absorbing portion is constituted by a plate-like member sandwiched between the rotor core and the end plate.
  • the plate member is made of a material softer than the rotor core and the end plate. By doing in this way, the member provided between the rotor core and the end plate can be easily deformed.
  • the end plate has a recess formed on the second axial end surface and a through-hole penetrating the end plate so as to reach the bottom surface of the recess, and absorbs unevenness.
  • the part is composed of a filler filled in the recess through the through hole.
  • the rotor further includes a magnet inserted into a hole formed in the rotor core, and the filler is filled in the recess, and flows into the gap between the hole and the magnet so that the magnet is inserted into the rotor core. Secure to. In this way, the magnet can be fixed and the unevenness of the axial end face can be absorbed simultaneously.
  • the method for manufacturing a rotor according to the present invention includes a step of mounting a plate-like member on the axial end surface of the rotor core, and the plate-like member is sandwiched between the rotor core and deformed. Pressing the end plate against the rotor core, and fixing the end plate to the rotor core.
  • the deformation of the plate-like member between the rotor core and the end plate suppresses the generation of a gap between the rotor core and the end plate. Therefore, heat transfer from the rotor core to the end plate The efficiency can be improved and the heat dissipation characteristics of the rotor can be improved.
  • the heat dissipation characteristics of the rotor can be improved.
  • FIG. 1 is a diagram showing a configuration of a vehicle drive device including a rotor according to Embodiments 1 and 2 of the present invention.
  • FIG. 2 is a cross-sectional view showing a rotating electrical machine included in the drive device shown in FIG.
  • FIG. 3 is a partial cross-sectional view showing the rotor according to the first embodiment of the present invention.
  • FIG. 4 is a flowchart for explaining the rotor manufacturing method according to the first embodiment of the present invention.
  • FIG. 5 is a partial cross-sectional view showing a rotor according to Embodiment 2 of the present invention.
  • FIG. 6 is a top view of the rotor shown in FIG.
  • FIG. 7 is a flowchart for explaining a rotor manufacturing method according to the second embodiment of the present invention.
  • FIG. 1 is a diagram showing a configuration of a vehicle drive device including a rotor according to Embodiments 1 and 2 of the present invention to be described later.
  • drive device 10 is a drive device that drives a hybrid vehicle, and includes motor generators 1 0 0 and 2 0 0, a planetary gear mechanism 3 0 0, and a speed reduction mechanism 4 0 0.
  • Motor generators 1 00, 2 0 0, planetary gear mechanism 3 0 0, reduction mechanism 4 0 0 and differential mechanism 5 0 0 are provided in housing 8 0 0.
  • Motor generators 100 and 200 are rotating electrical machines having at least one function of an electric motor and a generator, and include a rotating shaft, a rotor fixed to the rotating shaft, and a stator. .
  • Planetary gear mechanism 300 as the “power split mechanism” includes a sun gear, a ring gear, and a planetary carrier (all not shown).
  • the sun gear in planetary gear mechanism 300 is connected to the rotating shaft of motor generator 100.
  • the ring gear in the planetary gear mechanism 300 is connected to the rotating shaft of the motor generator 200.
  • the planetary carrier in the planetary gear mechanism 300 is connected to a shaft 20 to which power output from the engine is transmitted. Then, the power of the ring gear in the planetary gear mechanism 300 is transmitted to the speed reduction mechanism 400.
  • the speed reduction mechanism 400 is provided between the planetary gear mechanism 300 and the differential mechanism 500.
  • the differential tone mechanism 500 is connected to the drive shaft via a drive shaft receiving portion 600.
  • Motor generators 1 0 0 and 2 0 0 are electrically connected to cables 3 OA 1 and 3 0 A 2 via terminal blocks 7 1 0 and 7 2 0 provided on housing 8 0 0, respectively. .
  • the other ends of the cables 30 A 1 and 30 A 2 are connected to the PCU 30.
  • PCU 30 is electrically connected to battery 40 via cable 4 OA.
  • the battery 40 and the motor generator 1 0 0, 2 0 0 are electrically connected. Is done.
  • the power output from the engine is transmitted to the shaft 20 and divided into two paths by the planetary gear mechanism 30.
  • One of the two paths is a path that is transmitted from the speed reduction mechanism 400 to the drive shaft receiving portion 600 via the differential mechanism 500.
  • the driving force transmitted to the drive shaft receiving portion 60 is transmitted as a rotational force to the drive wheels via the drive shaft, and causes the vehicle to travel.
  • the other is a path for generating electric power by driving the motor generator 100.
  • the motor generator 100 generates power using the engine power distributed by the planetary gear mechanism 30.
  • the electric power generated by the motor generator 100 is selectively used according to the running state of the vehicle and the state of the battery 40. For example, during normal driving and sudden acceleration of the vehicle, the electric power generated by motor generator 100 becomes the electric power for driving motor generator 200 as it is.
  • the electric power generated by motor generator 100 is stored in battery 40 via an inverter and a comparator provided in PCU 30.
  • Motor generator 200 is driven by at least one of the electric power stored in battery 40 and the electric power generated by motor generator 100.
  • the driving force of the motor generator 20 0 is transmitted from the speed reduction mechanism 4 0 0 to the drive shaft receiving portion 6 0 0 via the differential mechanism 5 0 0. By doing so, it is possible to assist the driving force of the engine with the driving force from the motor generator 200, or to run the hybrid vehicle only with the driving force from the motor generator 200.
  • FIG. 2 is a cross-sectional view showing motor generator 200 shown in FIG. Referring to FIG.
  • motor generator 20 0 includes rotating shaft 2 1 0, rotor 2 2 0 fixed to rotating shaft 2 1 0, and stator 2 3 0.
  • the rotor 2 20 has a rotor core 2 2 1 attached to the rotary shaft 2 10.
  • the rotor core 2 2 1 has a hole extending in the axial direction, and a permanent magnet 2 2 2 is embedded in the hole.
  • the rotor core 2 2 1 is configured by laminating electromagnetic steel plates made of iron or iron alloy.
  • the permanent magnets 2 2 2 are arranged, for example, in the vicinity of the outer periphery of the mouth core 2 2 1 at almost equal intervals.
  • end plates 2 2 3 are provided at both axial ends of the rotor core 2 2 1.
  • the rotary shaft 2 10 is rotatably attached to a case (not shown) of a rotating electrical machine via a bearing portion (not shown).
  • the stator 2 3 0 has a ring-shaped stator core 2 3 1.
  • the stator core 2 3 1 is configured by laminating electromagnetic steel plates made of iron or iron alloy.
  • a plurality of teeth portions (not shown) and a slot portion (not shown) as a recess formed between the teeth portions are formed on the inner peripheral surface of the stator core 23 1.
  • the slot portion is provided so as to open to the inner peripheral side of the stator core 2 31.
  • Stator coil 2 3 2 including three winding phases, U phase, V phase and W phase, is wound around the tooth portion so as to fit into the slot portion.
  • the U phase, the V phase, and the W phase are wound so as to be displaced from each other on the circumference.
  • the U phase, the V phase, and the W phase may be wound around one tooth portion that is different from each other (this is referred to as “concentrated winding” in the present specification), and some of them are over each other.
  • Each may be wound around a plurality of teeth portions so as to wrap (in the present specification, this is referred to as “distribution rod”).
  • the temperature of the permanent magnet 2 2 2 increases due to eddy current loss in the permanent magnet 2 2 2 or magnetic flux fluctuation in the rotor core 2 2 1.
  • the permanent magnet 2 2 2 may be thermally demagnetized. As a result, the driving force of the motor generator 200 is reduced. Therefore, it is required to cool the rotor 2 20 effectively.
  • the motor generator 20 0 is applied to the vehicle drive device 10, and has a high rotational speed and tends to have a large magnetic flux fluctuation. Therefore, it is important to effectively cool the rotor in the motor generator 200.
  • the concentrated rod rotor has the advantage of high productivity, but the magnetic flux tends to fluctuate with the rotation of the rotor, so the temperature of the permanent magnet tends to rise. Therefore, in the case of a concentrated winding rotor, effective cooling of the rotor is particularly required.
  • the surface of the rotor core 2 2 1 facing the end plate 2 2 3 and the surface of the end plate 2 2 3 facing the rotor core 2 2 1 are uneven due to waviness and surface roughness. Is formed.
  • a gap is formed between the rotor core 2 2 1 and the end plate 2 2 3 due to the unevenness. In this way, a gap is formed between the rotor core 2 2 1 and the end plate 2 2 3, so that the efficiency of heat transfer from the rotor core 2 2 1 to the end plate 2 2 3 is reduced, and the heat dissipation of the rotor 2 2 0 Characteristics are degraded.
  • the above problem is the same for the motor generator 100, but the rotor 220 of the motor generator 200 rotates at a higher speed than the rotor of the motor generator 100 during steady running of the hybrid vehicle. Therefore, the temperature of the permanent magnet 2 2 2 in the motor generator 200 tends to be higher than that of the permanent magnet in the motor generator 100. Therefore, in the motor generator 200, particularly effective cooling of the rotor 220 is required.
  • the inventors of the present application improve the heat dissipation from the rotor core 2 2 1 and improve the cooling of the rotor 2 2 1 by improving the contact state between the rotor core 2 2 1 and the end plate 2 2 3. Devised.
  • FIG. 3 is a partial cross-sectional view showing the rotor according to the first embodiment.
  • plate-like member 2 24 is provided between rotor core 2 2 1 and end bullet 2 2 3.
  • the plate 2 2 4 is made of a softer material than the rotor core 2 2 1 and the end plate 2 2 3 Consists of.
  • the axial end surface of the rotor core 2 2 1 and the rotor core in the end plate 2 2 3 It is possible to suppress the formation of a gap between the rotor core 2 2 1 and the end plate 2 2 3 by absorbing irregularities on the surface facing the 2 2 1.
  • the gap between the rotor core 2 2 1 and the end plate 2 2 3 is filled with the plate-like member 2 2 4.
  • the heat transfer coefficient of the plate member 2 2 4 is higher than the heat transfer coefficient of air, the gap between the rotor core 2 2 1 and the end plate 2 2 3 is filled with the plate member 2 2 4. As a result, the heat transfer efficiency from the rotor core 2 2 1 to the end plate 2 2 3 is increased, and the heat dissipation characteristics of the rotor 2 2 0 are improved.
  • the plate-like member 2 24 it is possible to use, for example, a heat transfer sheet that includes a silicon-based resin.
  • a heat transfer sheet that includes a silicon-based resin. Examples of such a heat transfer sheet include those shown in Table 1.
  • the heat transfer coefficient of the heat transfer sheet can be changed as appropriate. From the viewpoint of improving the heat transfer efficiency from the rotor core 2 2 1 to the end braid 2 2 3, the heat transfer rate is as high as possible (for example, 2 It is preferable to use a heat transfer sheet having about 0.0 W / mK or more, more preferably about 3.0 W / mK or more.
  • a metal gasket may be used as the plate-like member 2 2 4.
  • the rotor core 2 2 1 and the end plate 2 2 absorb the unevenness of the end face in the axial direction of the rotor core 2 2 1 and the surface of the end plate 2 2 3 facing the rotor core 2 2 1. It is possible to suppress the formation of voids between the two. As a result, the heat transfer efficiency from the rotor core 2 2 1 to the end plate 2 2 3 is increased, and the heat dissipation characteristics of the rotor 2 2 0 are improved.
  • step 1 1 0 plate member 2 2 4 is placed on the axial end surface of rotor core 2 2 1.
  • step 1 2 0 the plate-like member 2 2 4 is sandwiched between the rotor core 2 2 1, and the plate-like member 2 2 4 is deformed in conformity with the unevenness, and the rotor core 2 2 1 ends Press plate 2 2 3
  • S 1 3 the end plate 2 2 3 is fixed to the rotor core 2 2 1 by, for example, caulking the end plate 2 2 3 and the rotating shaft 2 10.
  • a mouth 220 is formed in which a plate-like member 2 24 is interposed between the mouth core 2 21 and the end plate 2 2 3.
  • the rotor 2 20 includes a rotor core 2 2 1, an end plate 2 2 3 provided at an axial end of the rotor core 2 2 1, a rotor core 2 2 1 and an end plate 2 2 3.
  • a plate-like member 2 2 4 as an “unevenness absorbing portion” that can be deformed according to the unevenness of the axial end surface of the rotor core 2 2 1 and the axial end surface of the end plate 2 2 3 Is provided.
  • FIG. 5 is a partial cross-sectional view showing the rotor according to the second embodiment.
  • end plate 2 2 3 is provided with recess 2 2 3 A on the surface of end plate 2 2 3 facing port core 2 2 1 and end plate 2 2.
  • a through hole 2 2 3 B is provided from the outer surface of 3 to the bottom of the recess 2 2 3 A.
  • the resin portion 2 2 5 is filled in the recess 2 2 3 A.
  • the resin material constituting the resin part 2 2 5 is injected in the direction of the arrow in FIG. 5 through the through hole 2 2 3 B.
  • Rotor 2 As shown in FIG. 6, which is a top view of 20, the resin material injected through the through-hole 2 2 3 B flows into the magnet housing hole 2 2 1 A that houses the permanent magnet 2 2 2.
  • the permanent magnet 2 2 2 is fixed to the rotor core 2 2 1 when the resin material flowing into the magnet housing hole 2 2 1 A is cured.
  • the resin material that has flowed into the recess 2 2 3 A absorbs the unevenness of the end surface of the rotor core 2 2 1 facing the rotor core 2 2 1 in the axial direction of the rotor core 2 2 1 and the end of the rotor core 2 2 1 It is possible to suppress the formation of voids between the plates 2 2 3.
  • the gap between the rotor core 2 2 1 and the end plate 2 2 3 is filled with the resin portion 2 25.
  • the heat transfer coefficient of the resin part 2 2 5 is higher than the heat transfer coefficient of air, the gap formed between the rotor core 2 2 1 and the end plate 2 2 3 is filled with the resin part 2 2 5. As a result, the heat transfer efficiency from the rotor core 2 2 1 to the end plate 2 2 3 is increased, and the heat dissipation characteristics of the rotor 2 2 0 are improved.
  • the resin material constituting the resin portion 2 25 is filled in the recess 2 2 3 A and flows into the gap between the magnet insertion hole 2 2 1 A and the permanent magnet 2 2 2.
  • the permanent magnet 2 2 2 it is possible to simultaneously fix the permanent magnet 2 2 2 and absorb the unevenness of the end faces in the axial direction of the rotor core 2 2 1 and the end plate 2 2 3. it can.
  • end plate 2 2 3 is fixed to rotor core 2 2 1 so as to form a gap with the axial end surface of rotor core 2 2 1.
  • the resin material is poured into the gap formed between the axial end surface of the rotor core 2 2 1 and the end plate 2 2 3.
  • the resin material that has flowed into the gap between the rotor core 2 2 1 and the end plate 2 2 3 is cured. By doing so, the rotor 2 2 0 filled with the resin portion 2 2 5 is formed in the gap between the rotor core 2 2 1 and the end plate 2 2 3.
  • the rotor 2 20 includes the rotor core 2 2 1 and the axial end of the rotor core 2 2 1.
  • the end plate 2 2 3 provided on the rotor and the end face of the rotor core 2 2 1 between the rotor core 2 2 1 and the end plate 2 2 3 facing each other and the end face of the end plate 2 2 3
  • a resin part 2 2 5 as an “unevenness absorbing part” that can be deformed according to the conditions.
  • the end plate 2 2 3 has a recess 2 2 3 A formed on the axial end surface facing the rotor core 2 1 and a through hole 2 2 3 B reaching the bottom surface of the recess 2 2 3 A.
  • the resin portion 2 25 is made of a resin material which is a “filler” filled in the recess 2 2 3 A via the through hole 2 2 3 B.
  • the rotor 2 20 included in the motor generator 2 200 was mainly described. However, the same idea can also be applied to the rotor included in the motor generator 1 0 0. . Furthermore, the scope of the present invention is not limited to a rotor included in a vehicle drive device, and the idea of the present invention can be applied to a rotor included in rotating electrical machines in all fields.
  • the present invention can be applied to, for example, a rotor included in a rotating electrical machine mounted on a vehicle drive device and a manufacturing method thereof.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention concerne un induit ayant un noyau d'induit (221), des plaques d'extrémité (223) fournies aux extrémités axiales du noyau d'induit (221), et des éléments semblables à une plaque (224) maintenus entre le noyau d'induit (221) et les plaques d'extrémité (223) et déformables en fonction d'irrégularités des faces d'extrémité axiales faisant face de chaque noyau d'induit (221) et de la plaque d'extrémité (223).
PCT/JP2008/052385 2007-02-09 2008-02-06 Induit et procédé de fabrication de ce même WO2008096897A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007030264A JP2008199725A (ja) 2007-02-09 2007-02-09 ロータおよびその製造方法
JP2007-030264 2007-02-09

Publications (1)

Publication Number Publication Date
WO2008096897A1 true WO2008096897A1 (fr) 2008-08-14

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WO (1) WO2008096897A1 (fr)

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* Cited by examiner, † Cited by third party
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JP5258509B2 (ja) * 2008-10-28 2013-08-07 三菱電機株式会社 永久磁石型モータの回転子
JP5402154B2 (ja) * 2009-03-30 2014-01-29 アイシン精機株式会社 電動機
JP2012125034A (ja) * 2010-12-08 2012-06-28 Hitachi Ltd 永久磁石式回転電機及びその回転子製造方法
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