WO2011070410A1 - Moteur comprenant un aimant fendu et procédé de fabrication de ce moteur - Google Patents

Moteur comprenant un aimant fendu et procédé de fabrication de ce moteur Download PDF

Info

Publication number
WO2011070410A1
WO2011070410A1 PCT/IB2010/002878 IB2010002878W WO2011070410A1 WO 2011070410 A1 WO2011070410 A1 WO 2011070410A1 IB 2010002878 W IB2010002878 W IB 2010002878W WO 2011070410 A1 WO2011070410 A1 WO 2011070410A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnet
cleft
lateral face
stator
motor
Prior art date
Application number
PCT/IB2010/002878
Other languages
English (en)
Inventor
Tomonari Kogure
Makoto Kitahara
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 WO2011070410A1 publication Critical patent/WO2011070410A1/fr

Links

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]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0205—Magnetic circuits with PM in general
    • 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

Definitions

  • the invention relates to a motor having a cleft magnet in, for example, a slot formed in a rotor (an interior permanent magnet motor, which will be referred to hereinafter as an ⁇ motor), and to a method of manufacturing the motor.
  • a motor having a cleft magnet in, for example, a slot formed in a rotor an interior permanent magnet motor, which will be referred to hereinafter as an ⁇ motor
  • ⁇ motor an interior permanent magnet motor
  • IPM motor a motor that includes a permanent magnet-embedded rotor, in which a plurality of permanent magnets are embedded within the rotor core
  • IPM motors may be employed as motors for hybrid vehicles.
  • a coil is formed by winding a winding wire around stator teeth in a concentrated manner or in a distributed manner.
  • a current is applied to the coil to generate a magnetic flux and create magnetic torque and a reluctance torque between the generated magnetic flux and the magnetic flux resulting of the permanent magnet.
  • the number of magnetic poles is greater than that of a concentrated-winding coil, and accordingly, the magnetic flux (or a change in magnetic flux) entering the permanent magnet of a rotor from the teeth side during rotation of the rotor is relatively continuous. Therefore, the change in magnetic flux during rotation of the rotor is relatively small.
  • the permanent magnet may be formed out of a plurality of split pieces that are bundled together before being installed in a rotor slot, as described in, for example, Japanese Patent Application Publication No. 2005-198365 (JP-A-2005- 198365), Japanese Patent Application Publication No. 2004-96868
  • JP-A-2004-96868 Japanese Patent Application Publication No. 2006-238565
  • JP-A-2006-238565 Japanese Patent Application Publication No.
  • the permanent magnet may be effectively manufactured from the plurality of the split pieces to suppress the possible induction of eddy currents in the permanent magnet, as described in JP-A-2005-198365, JP-A-2004-96868, and
  • JP-A-2006-238565 The split pieces constituting the permanent magnet described in JP-A-2005-198365, JP-A-2004-96868, and JP-A-2006-238565 are manufactured separately from one another, or according to a method in which a permanent magnet molded into an inner void shape and inner void dimension of a rotor slot into which the permanent magnet should be inserted is machined (cut) into a plurality of split strips. From the standpoint of manufacturing efficiency and manufacturing cost, it is prevalent to adopt the latter processing method.
  • a ferrite magnet or a rare earth magnet such as a neodymium magnet or the like as a permanent magnet has a metal structure composed of a main phase S contributing to magnetization and a grain boundary phase R contributing to a coercive force, as shown in FIG 6 as an enlarged view of the structure of the magnet.
  • this permanent magnet is split through machining, split strips are formed along a cutting line indicated by an LI line of FIG. 6.
  • this LI line is formed while cutting and splitting the main phase S. Therefore, the main phase S is smaller in size after it is cut than before it is cut. This constitutes a factor in a fall in residual magnetic flux density Br in comparison with a state prior to the cutting of the main phase S.
  • the grain boundary phase R applies a coercive force to the main phase S covered therewith.
  • the main phase S that is in contact with a cutting face is uncovered with the grain boundary phase R and is therefore likely to undergo magnetization inversion with respect to an external magnetic field.
  • This magnetization inversion phase serves as an origin to reduce the coercive force of the entire magnet.
  • the invention provides a motor that includes cleft magnets that do not cause an inconvenience in the case of the aforementioned machining in manufacturing a split magnet and prevents especially a stator-side dimension (width) of some of respective cleft strips of the cleft magnet from becoming larger than that of the other cleft strips to cause an increase in eddy-current loss as a result of dimensional dispersion of the cleft strips, and a method of manufacturing the motor.
  • a motor that includes a stator and a rotor disposed inside the stator and a cleft magnet is disposed within the rotor, wherein, a notch is formed in an outer lateral face of the cleft magnet that faces the stator, wherein the notch serves as a cleavage origin, and the cleft magnet is cleaved into a plurality of strips along a cleavage face that extends from the notch as a cleavage origin to an inner lateral face of the cleft magnet, which faces away from the stator.
  • the cleavage face of the cleft magnet may be cleaved along a grain boundary phase that is lower in strength than a main phase of the cleft magnet.
  • the cleft magnet may include a plurality of parallel notches that are zonation.
  • the magnet (permanent magnet) applied to the motor equipped with the cleft magnet according to the first aspect of the invention includes a rare earth magnet, a ferrite magnet, an alnico magnet or the like.
  • the magnet is not limited in particular as long as it has a metal structure composed of a main phase contributing to magnetization and a grain boundary phase contributing to a coercive force.
  • the "permanent magnet” mentioned herein is meant to include an unmagnetized sintered body and a simple green compact as well as the aforementioned magnetized rare earth magnet and the like.
  • a three-component neodymium magnet obtained by adding iron and boron to neodymium, a samarium-cobalt magnet made of a two-component alloy of samarium and cobalt, a samarium-iron-nitrogen magnet, a praseodymium magnet or the like can be mentioned as the rare earth magnet.
  • the rare earth magnet is larger in maximum energy product (BH) max than the ferrite magnet and the alnico magnet, and hence is suited to be applied to a motor for driving a hybrid vehicle or the like, that is, a motor requiring high output.
  • a plurality of zonate notches serving as cleavage origins are formed at intervals of a predetermined distance in one lateral face of a hexahedron
  • the aforementioned plurality of the notches be formed in, for example, only one lateral face of the hexahedron permanent magnet.
  • a cleavage path is more likely to be formed from the notch in one of the faces toward the notch in the other face.
  • the permanent magnet tends to develop chips, cracks and the like and deteriorates in magnetic characteristic due to the provision of the notches in the two opposed lateral faces, namely, an increase in chipped cross-sectional area.
  • the magnet is split along the grain boundary phase exhibiting relatively low strength (so-called grain boundary separation). Therefore, the problems in manufacturing the split magnet through machining, namely, a fall in residual magnetic flux density, a decrease in coercive force resulting from magnetization inversion, also the troublesomeness of maintenance in replacing the cutting tool, and a rise in manufacturing cost can all be solved.
  • a method of manufacturing a motor that includes a stator and a rotor disposed inside the stator and a cleft magnet disposed within the rotor, the method including: preparing a magnet equipped, in one lateral face thereof, with a notch serving as a cleavage origin; cleaving the magnet using the notch as a cleavage origin to form two or more cleft strips and fitting cleavage faces of adjacent cleft strips to one another to reintegrate the magnet; and disposing the reintegrated magnet in a slot formed through the rotor such that the notch corresponds to an outer lateral face of the magnet that faces the stator.
  • the magnet which has formed in the one lateral face thereof a plurality of parallel zonate notches spaced apart from one another by a clearance, is prepared, and the magnet may be cleft by applying thereto a diagonal tensile force as a resultant force of a tensile component in a direction
  • the magnet may be gripped, at one end that extends parallel to the plurality of the notches, by a fixed gripper, the magnet may be gripped, at the other end thereof extending parallel to the plurality of the notches, by a tension gripper, and the magnet may be cleft by pulling the magnet diagonally from the one lateral face in which the notches are provided toward the other lateral face via the tension gripper.
  • the magnet is cleft by being subjected to a diagonal tensile force transmitted from the lateral face side where the notches are formed toward the other lateral face or tensile bending. Therefore, in addition to the promotion of the cleaving of the magnet, cleft strips whose error in width dimension has been minimized can be obtained on the lateral face located opposite the lateral face in which the notches are provided.
  • Motors equipped with cleft magnets according to the first aspect of the invention and motors (IPM motors) obtained through the manufacturing method according to the second aspect of the invention have been actively mass-produced in recent years, and are also suitable as motors for driving hybrid vehicles and electric vehicles of which high-output performance is expected.
  • FIG. 1 is a perspective view of a motor according to the embodiment of the invention.
  • FIG. 2 is a schematic view illustrating how cleft magnets constituting the motor of FIG. 1 according to the embodiment of the invention are disposed in a rotor core;
  • FIG. 3 is a view illustrating a cleavage path formed in cleaving a permanent magnet according to the embodiment of the invention
  • FIG 4 is a view illustrating the method of cleaving a permanent magnet (a first step) in a method of manufacturing a motor according to the embodiment of the invention
  • FIG. 5A is a graph showing the result of an analysis of the width and magnet loss of cleft or split magnets
  • FIG. 5B is a graph showing a result of an analysis of a comparison in magnet eddy-current loss among a motor equipped with cleft magnets cut through machining (Comparative Example 1), a motor equipped with cleft magnets each having a magnet lateral face with a notch directed toward a stator side (Example), and a motor equipped with cleft magnets each having a magnet lateral face with a notch directed toward the opposite of a stator side (Comparative Example 2); and
  • FIG. 6 is a view illustrating a splitting line in a structure of a permanent magnet split by a machine according to the related art.
  • FIG 1 is a perspective view showing a motor that includes cleft magnets according to the embodiment of the invention.
  • FIG 2 is a schematic view showing a relationship between the cleft magnets disposed in a rotor core constituting the motor of FIG 1 and a stator, with the cleft magnets in the rotor core seen through.
  • An IPM motor 100 shown in FIG. 1 is generally composed of a stator 20 and a rotor 10.
  • the stator 20 is formed by laminating a plurality of electromagnetic steel plates 2 composed of yokes 22 generally annular in a plan view and teeth 21 that protrude radially inward from the yokes 22.
  • the rotor 10 is rotatably disposed inside the stator 20, and formed by laminating a plurality of electromagnetic steel plates 1 in the shape of a circular disc.
  • a rotor shaft 11 (a drive shaft slot) is opened through this rotor 10 at the center of the rotor, and a plurality of magnet slots, extending along the rotor shaft 11, are formed through the rotor 10 near the periphery of the rotor.
  • Cleft magnets 30, formed by cleaving a permanent magnet are inserted into each magnet slot. Gaps between the slots and the cleft magnets 30 may be filled with, for example, a fixing resin to ensure that the cleft magnets 30 remain fixed in the slots. It should be noted that although the example shown in FIGS. 1 and 2 is configured so that one of the cleft magnets 30 is disposed per pole in such a posture that a longitudinal direction thereof is arranged face to face with the teeth 21 in a plan view , a configuration in which one pole is formed by two permanent magnets and the permanent magnets are disposed in the shape of V in a plan view.
  • the stator 20 is integrally formed of, for example, the plurality of the laminated electromagnetic steel plates 2 caulked at the yokes 22.
  • the rotor 10 is also integrally formed of the plurality of the electromagnetic steel plates 1 caulked in regions between the cleft magnets 30 and the rotor shaft 11 respectively.
  • both the stator 20 and the rotor 10 is not restricted to lamination of electromagnetic steel plates.
  • Suitable alternative include a dust core made of a soft magnetic metallic powder of iron, an iron-silicon alloy, an iron-nitrogen alloy, an iron-nickel alloy, an iron-carbon alloy, an iron-boron alloy, an iron-cobalt alloy, an iron-phosphorus alloy, an iron-nickel-cobalt alloy, an
  • iron-aluminum-silicon alloy or the like or a magnetic powder having a soft magnetic metallic oxide powder covered with a resin binder such as a silicon resin or the like.
  • Each cleft magnet 30 is formed by cleaving a rectangular parallelepiped permanent magnet in which a plurality of zonate notches 31, as shown in FIG. 2, formed in one lateral face of the cleft magnet 30 and are used as cleavage origins. After cleaving the cleft magnet 30, cleft strips 30A to 30E are fitted together along the cleavage faces of the notches 31, and reintegrated into a permanent of an original shape and an original dimension.
  • Each cleft magnet 30 is then inserted into the rotor slot and fixed therein so that the outer lateral face 30a of the cleft magnet 30, in which the plurality of the notches 31 are formed, faces toward the stator (radially outward of the rotor 10).
  • the clearance between adjacent ones of the notches 31 and 31 is uniformly prescribed in advance as a predetermined clearance t as shown in FIG. 2. Accordingly, in each of the cleft magnets 30 obtained by cleaving the permanent magnet, the respective cleft strips on the lateral face 30a in which the plurality of the notches 31 are formed are still ensured of a constant width and hence a constant area. On the other hand, the respective cleft strips are inhomogeneous in width on a lateral face 30b of each of the cleft magnets 30 (radially inward of the rotor 10) located on the other side, depending on the proceeding of cleaving. As is apparent from the example shown in the drawings, while some of the cleft strips may be relatively narrow, others may be relatively wide.
  • each cleft strip constituting the lateral face 30a facing the stator be all ensured of a desired width or area that is uniformly assumed at first (determined at the stage of designing).
  • the variation in width or area of each cleft strip constituting the lateral face 30b located on the other side does not greatly affect the eddy-current loss in the cleft magnet.
  • the motor 100 according to the invention has a new technical concept in that a mode of disposing the cleft magnets as described above is applied, and also is obtained through an extremely simple structural improvement, namely, a construction in which the plurality of the notches are provided in the permanent magnet and the magnet is inserted into the slot and fixed therein in such a posture that the lateral face of the magnet in which these notches are provided is arranged face to face with the stator side.
  • the clearance between the respective notches 31 and 31 is uniformly set as a width t in the example shown in the drawings, but that the clearance between the notches may not necessarily be uniform in view of the fact that the possible eddy-current loss also decreases as the width t decreases, and that it is appropriate to adopt a configuration in which the eddy-current loss in the cleft strip having the widest clearance between the notches is so adjusted as to be equal to or smaller than a desired value.
  • FIG. 3 is a view illustrating a cleavage path formed in cleaving the permanent magnet according to the embodiment of the invention, and also shows the internal composition of the permanent magnet.
  • the cleft strips are formed by cleaving the permanent magnet along the cleavage path L2, as shown in FIG. 3.
  • the metallic composition of the permanent magnet is formed through the interposition of a grain boundary phase R, which contributes to a coercive force between main phases S, which contribute to magnetization.
  • a cutting line LI segmenting the main phase S as shown in FIG. 6 is formed.
  • the cleavage path L2 is formed along the grain boundary phase R, which has a lower strength than the main phases S. Therefore, the cleft strips are formed in which each main phase S maintains its original size and is protected by the grain boundary phase R along the outer periphery thereof. Thus, residual magnetic flux density and coercive force are greater in the cleft magnet than the split magnet that has been mechanically cut.
  • the method of manufacturing the motor according to the embodiment of the invention namely, the method of manufacturing the motor 100 shown in FIGS. 1 and 2 is made up of a first step of preparing a permanent magnet equipped in one lateral face thereof with a plurality of notches 31 serving as cleaving origins, a second step of cleaving the permanent magnet using the plurality of the notches 31 as the cleaving origins to form two or more cleft strips 30A to 30E and fitting cleavage faces of adjacent ones of the cleft strips to each other respectively to reintegrate the permanent magnet and hence obtain the cleft magnet 30, and a third step of disposing this cleft magnet 30 in the slot of the rotor 10 such that the notches 31 correspond to the stator side.
  • FIG. 4 shows one embodiment of a step of cleaving the permanent magnet in the first step of the aforementioned manufacturing method.
  • One end of a permanent magnet 30' so machined as to fit the shape and dimension of the slot more specifically, one end of the permanent magnet 30' that extends parallel to the plurality of the notches 31 formed in one lateral face of the permanent magnet 30' is gripped by a fixing gripper K, and the other end of the permanent magnet 30' is gripped by a tension gripper H.
  • the permanent magnet 30' is then subjected to a tensile (bending) process diagonally on the lateral face side thereof located opposite the lateral face in which the notches 31 are provided, via the tension gripper H.
  • the cleft strips can thereby be efficiently manufactured using the respective notches 31 as the cleaving origins.
  • This diagonal tensile force P may be regarded as a resultant tensile force composed of a tensile component PI applied horizontally to the permanent magnet 30' and a tensile component P2 applied vertically downward to the permanent magnet 30', and can also be regarded as diagonally downward tensile bending.
  • a current condition as a condition of this analysis was set as an amplitude of 4.8 (A), a frequency of 1700 (Hz), and a phase of 0 (deg). It should be noted that this amplitude condition is a condition for ensuring the magnets of a magnet flux density of 0.1 (T).
  • the magnets used are neodymium sintered magnets with an Hcb of 985000 A/m, a recoil ratio magnetic permeability of 1.05, a specific resistance of 1.35xl0 ⁇ 6 (Qm), and a density of 7600 (kg/m 3 ).
  • electromagnetic steel plates forming rotor cores and stator cores are isotropic electromagnetic steel plates, and the magnetization characteristic thereof is so set as to prevent the electromagnetic steel plates from being saturated.
  • FIG. 5A shows an analysis result of a magnet width and a magnet loss. As is apparent from FIG. 5A, while the magnet loss increases like a quadratic curve with increases in width and there is almost no loss when the width is about 2 mm, the increase in magnet loss is remarkable from an inflexion point corresponding to a width of about 3 mm.
  • condition of the analysis is the same as described above, and that a difference between machining and cleaving and a difference between lateral faces of even a cleft magnet subjected to cleaving during insertion into a rotor slot thereof (whether or not that lateral face which has notches is directed toward a stator side) are added as the conditions to be set.
  • FIG 5B shows respective analysis conditions of Comparative Examples 1 and 2 and Example. It has been substantiated from FIG. 5B that the eddy-current loss of Comparative Example 1 in which the respective split magnets are uniformly processed into the same width (the same dimension) is the smallest, and that Example in which the lateral face in which the notches are formed is arranged face to face with the stator side achieves an eddy-current loss reduction effect of no less than 1 kW in comparison with Comparative Example 2.
  • This analysis has substantiated that an eddy-current loss in a permanent magnet can be reduced by equipping a motor with a cleft magnet whose lateral face in which notches are formed is arranged face to face with a stator side, and that an IPM motor can be made excellent in torque performance and rotation performance in view of the fact that a magnet high in coercive force performance and magnetization performance (residual magnetic flux density) is obtained as an effect intrinsically exerted through the application of a cleft magnet.

Abstract

L'invention porte sur un moteur (100) qui comprend un stator (20) et un rotor (10) disposé à l'intérieur du stator (20), et un aimant fendu (30) qui est disposé à l'intérieur du rotor (10), le moteur (100) étant caractérisé en ce qu'une encoche (31) est formée dans une face latérale extérieure (30a) de l'aimant fendu (30) qui fait face au stator (20), l'encoche (31) servant d'origine du clivage, et l'aimant fendu (30) étant fendu en une pluralité de bandes sur la longueur d'une face de clivage qui s'étend à partir de l'encoche (31) constituant l'origine du clivage jusqu'à une face latérale intérieure (30b) de l'aimant fendu (30) qui regarde à l'opposé du stator (20).
PCT/IB2010/002878 2009-12-09 2010-11-11 Moteur comprenant un aimant fendu et procédé de fabrication de ce moteur WO2011070410A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009279320A JP2011125105A (ja) 2009-12-09 2009-12-09 割断磁石を備えたモータとその製造方法
JP2009-279320 2009-12-09

Publications (1)

Publication Number Publication Date
WO2011070410A1 true WO2011070410A1 (fr) 2011-06-16

Family

ID=43806948

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/002878 WO2011070410A1 (fr) 2009-12-09 2010-11-11 Moteur comprenant un aimant fendu et procédé de fabrication de ce moteur

Country Status (2)

Country Link
JP (1) JP2011125105A (fr)
WO (1) WO2011070410A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105122609A (zh) * 2013-04-10 2015-12-02 日产自动车株式会社 向转子铁芯磁体插入孔的磁体插入装置以及方法
EP3041114A4 (fr) * 2013-08-29 2016-08-31 Nissan Motor Procédé de découpe et dispositif de découpe pour la fabrication d'un morceau d'aimant constituant un corps d'aimant pour pièce polaire à disposer dans une machine électrique tournante
DE102015103418B4 (de) 2015-03-09 2019-03-21 Schuler Pressen Gmbh Verfahren und Vorrichtung zum Trennen eines Ausgangsbleches und Blechteil

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9251951B2 (en) 2012-02-01 2016-02-02 Nissan Motor Co., Ltd. Method of manufacturing magnet segment of field pole magnet body
JP5849774B2 (ja) * 2012-03-01 2016-02-03 日産自動車株式会社 回転電機に配設される界磁極用磁石体を構成する磁石片を、永久磁石体を割断して製造する割断方法及び割断装置
WO2014030547A1 (fr) * 2012-08-21 2014-02-27 日産自動車株式会社 Structure de rotor et procédé de fabrication de rotor pour machine électrique tournante de type à aimant permanent

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026014A1 (fr) * 1979-09-25 1981-04-01 Koninklijke Philips Electronics N.V. Procédé de fabrication d'un assemblage d'aimants permanents destiné à être placé dans un entrefer d'un noyau de transformateur
JPH0255107A (ja) * 1988-08-19 1990-02-23 Matsushita Electric Ind Co Ltd セラミック基板の分割方法
US20020115390A1 (en) * 2000-11-24 2002-08-22 Sadahiko Kondo Method for cutting rare earth alloy, method for manufacturing rare earth magnet, and wire-saw machine
US6501047B1 (en) * 1999-11-19 2002-12-31 Seagate Technology Llc Laser-scribing brittle substrates
US20040045637A1 (en) * 2001-07-31 2004-03-11 Atsuo Tanaka Method for manufacturing sintered magnet
JP2004096868A (ja) 2002-08-30 2004-03-25 Toyota Motor Corp Ｉｐｍモータの磁石分割方法及びｉｐｍモータ
JP2005198365A (ja) 2003-12-26 2005-07-21 Neomax Co Ltd モータ用希土類永久磁石とその製造方法
US7040969B1 (en) * 1999-09-16 2006-05-09 Neomax Co., Ltd. Method and apparatus for grinding magnetic member and method and apparatus for treating waste fluid
JP2006238565A (ja) 2005-02-23 2006-09-07 Toyota Motor Corp 永久磁石式回転電機、それに用いる永久磁石の製造方法およびその製造方法を用いた永久磁石式回転電機の製造方法
DE102006015142A1 (de) * 2006-03-31 2007-10-04 Dyntest Technologies Gmbh Vorrichtung zum Brechen von Halbleiterscheiben oder ähnlichen Substraten
WO2008142519A1 (fr) * 2007-05-23 2008-11-27 Toyota Jidosha Kabushiki Kaisha Machine électrique rotative à aimant permanent et procédé de fabrication d'un rotor pour machine électrique rotative à aimant permanent
JP2009033958A (ja) 2007-06-29 2009-02-12 Nissan Motor Co Ltd 界磁極用磁石体、この界磁用磁石体の作製方法、及び永久磁石型回転電機
WO2009071975A1 (fr) * 2007-12-06 2009-06-11 Toyota Jidosha Kabushiki Kaisha Aimant permanent, procédé de fabrication dudit aimant, et rotor et moteur à aimant permanent intérieur

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026014A1 (fr) * 1979-09-25 1981-04-01 Koninklijke Philips Electronics N.V. Procédé de fabrication d'un assemblage d'aimants permanents destiné à être placé dans un entrefer d'un noyau de transformateur
JPH0255107A (ja) * 1988-08-19 1990-02-23 Matsushita Electric Ind Co Ltd セラミック基板の分割方法
US7040969B1 (en) * 1999-09-16 2006-05-09 Neomax Co., Ltd. Method and apparatus for grinding magnetic member and method and apparatus for treating waste fluid
US6501047B1 (en) * 1999-11-19 2002-12-31 Seagate Technology Llc Laser-scribing brittle substrates
US20020115390A1 (en) * 2000-11-24 2002-08-22 Sadahiko Kondo Method for cutting rare earth alloy, method for manufacturing rare earth magnet, and wire-saw machine
US20040045637A1 (en) * 2001-07-31 2004-03-11 Atsuo Tanaka Method for manufacturing sintered magnet
JP2004096868A (ja) 2002-08-30 2004-03-25 Toyota Motor Corp Ｉｐｍモータの磁石分割方法及びｉｐｍモータ
JP2005198365A (ja) 2003-12-26 2005-07-21 Neomax Co Ltd モータ用希土類永久磁石とその製造方法
JP2006238565A (ja) 2005-02-23 2006-09-07 Toyota Motor Corp 永久磁石式回転電機、それに用いる永久磁石の製造方法およびその製造方法を用いた永久磁石式回転電機の製造方法
DE102006015142A1 (de) * 2006-03-31 2007-10-04 Dyntest Technologies Gmbh Vorrichtung zum Brechen von Halbleiterscheiben oder ähnlichen Substraten
WO2008142519A1 (fr) * 2007-05-23 2008-11-27 Toyota Jidosha Kabushiki Kaisha Machine électrique rotative à aimant permanent et procédé de fabrication d'un rotor pour machine électrique rotative à aimant permanent
JP2009033958A (ja) 2007-06-29 2009-02-12 Nissan Motor Co Ltd 界磁極用磁石体、この界磁用磁石体の作製方法、及び永久磁石型回転電機
WO2009071975A1 (fr) * 2007-12-06 2009-06-11 Toyota Jidosha Kabushiki Kaisha Aimant permanent, procédé de fabrication dudit aimant, et rotor et moteur à aimant permanent intérieur

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105122609A (zh) * 2013-04-10 2015-12-02 日产自动车株式会社 向转子铁芯磁体插入孔的磁体插入装置以及方法
EP3041114A4 (fr) * 2013-08-29 2016-08-31 Nissan Motor Procédé de découpe et dispositif de découpe pour la fabrication d'un morceau d'aimant constituant un corps d'aimant pour pièce polaire à disposer dans une machine électrique tournante
DE102015103418B4 (de) 2015-03-09 2019-03-21 Schuler Pressen Gmbh Verfahren und Vorrichtung zum Trennen eines Ausgangsbleches und Blechteil

Also Published As

Publication number Publication date
JP2011125105A (ja) 2011-06-23

Similar Documents

Publication Publication Date Title
US9876397B2 (en) Electrical machine
US9608485B2 (en) Rotor for rotating electrical machine, rotating electric machine, and method for producing rotor for rotating electrical machine with magnet having surfaces tilted with respect to magnet insertion hole
EP3125405B1 (fr) Ensemble aimant permanent et moteur
US8729763B2 (en) Rotor and IPM motor
US8497613B2 (en) Permanent magnet, manufacturing method thereof, and rotor and IPM motor
EP2378632B1 (fr) Machine électrique rotative du type à aimant permanent
EP1420499B1 (fr) Rotor à aimants permanents encastrés
EP2056431A1 (fr) Rotor de dispositif électrique rotatif du type à aimants permanents
CN108475971B (zh) 磁化方法、转子、电动机以及涡旋压缩机
WO2011070410A1 (fr) Moteur comprenant un aimant fendu et procédé de fabrication de ce moteur
JP5359895B2 (ja) Ｉｐｍモータ用ロータとｉｐｍモータ
JP5640678B2 (ja) Ｉｐｍモータ用ロータとｉｐｍモータ
WO2007146251A2 (fr) Machine électrique à aimants permanents internes
CN108462268B (zh) 旋转电机的转子
US11710994B2 (en) Rotating electrical machine
JP2009273240A (ja) Ｉｐｍモータ用ロータとその製造方法
JP2013165625A (ja) Ｉｐｍモータ用ロータの製造方法
JP5099147B2 (ja) Ｉｐｍモータ用ロータとその製造方法
JP2011229329A (ja) 永久磁石式モータ
US20210344240A1 (en) Machines utilizing heavy rare earth free permanent magnets
JP6330425B2 (ja) 回転電気機械
CN214900396U (zh) 旋转电机的转子
CN112737172B (zh) 电机转子及电机
US20230421035A1 (en) Linear motor
JP2017135857A (ja) モータ用ロータの製作方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10790472

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10790472

Country of ref document: EP

Kind code of ref document: A1