WO2011048652A1 - Dispositif d'aimantation et procédé de fabrication d'un moteur à aimant permanent - Google Patents

Dispositif d'aimantation et procédé de fabrication d'un moteur à aimant permanent Download PDF

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Publication number
WO2011048652A1
WO2011048652A1 PCT/JP2009/068003 JP2009068003W WO2011048652A1 WO 2011048652 A1 WO2011048652 A1 WO 2011048652A1 JP 2009068003 W JP2009068003 W JP 2009068003W WO 2011048652 A1 WO2011048652 A1 WO 2011048652A1
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WO
WIPO (PCT)
Prior art keywords
magnetic field
magnetized
permanent magnet
magnetizing
permanent magnets
Prior art date
Application number
PCT/JP2009/068003
Other languages
English (en)
Japanese (ja)
Inventor
孝教 小松
隆一 瀧口
諭 山代
康樹 木村
覚 長谷川
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2011537035A priority Critical patent/JP5409800B2/ja
Priority to CN200980161730.7A priority patent/CN102576595B/zh
Priority to PCT/JP2009/068003 priority patent/WO2011048652A1/fr
Publication of WO2011048652A1 publication Critical patent/WO2011048652A1/fr

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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets

Definitions

  • the present invention relates to a magnetizing device and a method for manufacturing a permanent magnet type electric motor using the same.
  • Patent Document 1 As a conventional example using such a technique, for example, in Patent Document 1 below, by providing an output unit of a magnetized power supply corresponding to each divided magnetizing coil, and operating each output unit simultaneously, A multi-pole magnetizing method for large magnets that can secure the required output current without using a high-voltage, high-energy large-scale power supply and that can be magnetized by using a small, power-saving and inexpensive power supply. is suggesting.
  • JP-A-7-106129 (page 2, line 0007, FIG. 1)
  • Patent Document 1 requires a magnetized power source, there is a problem in that it is not possible to reduce power consumption even if power can be saved.
  • the present invention has been made to solve the above-described problems, and an object thereof is to provide a permanent magnet type magnetized power source that can be magnetized without using a magnetized power source. To do.
  • the present invention includes at least a magnetic field generating space having a dimension capable of passing a magnetized piece, and a pair of permanent magnets provided in opposite positions of the magnetic field generating space and having the same magnetic field direction. And a magnetic circuit that forms a circulating magnetic field that penetrates the magnetic field generation space from the permanent magnet, enters the other permanent magnet, and finally returns to the one permanent magnet.
  • Embodiment 6 of this invention It is a figure for demonstrating the magnetizing apparatus by Embodiment 6 of this invention. It is a perspective view which shows the structure of the magnetizing apparatus by Embodiment 7 of this invention. It is a perspective view which shows the structure of the magnetizing apparatus by Embodiment 8 of this invention. It is a perspective view which shows the structure of the magnetizing apparatus by Embodiment 9 of this invention. It is a perspective view which shows the structure of the magnetizing apparatus by Embodiment 10 of this invention. It is a perspective view of an example of the permanent magnet type magnetizing apparatus used with the manufacturing method of the permanent magnet type electric motor by Embodiment 11 of this invention.
  • FIG. 11 It is a perspective view of another example of the permanent magnet type
  • FIG. 1 is a side view showing a configuration of a magnetizing apparatus according to Embodiment 1 of the present invention.
  • the magnetizing device includes a pair of magnetic field generating permanent magnets 1a and 1b, a pair of pole pieces (magnetic pole pieces) 2a and 2b, and a yoke (junction) 2 connecting the magnetic field generating permanent magnets 1a and 1b.
  • the magnetic circuit 4 configured generates a circulating magnetic field 4a. This magnetic field 4 a passes through the magnetic field generation space 3 formed in the magnetic circuit 4.
  • the pole pieces 2a and 2b and the yoke 2 are made of a high magnetic permeability soft magnetic material such as pure iron or low carbon steel.
  • a pair of magnetic field generating permanent magnets (hereinafter referred to as magnets) 1 a and 1 b having the same magnetic field direction are arranged opposite to each other on both sides of the magnetic field generating space 3.
  • the magnetic field generation space 3 has a dimension that allows the magnetized piece 5 to pass through.
  • the magnetized piece 5 is, for example, a neodymium magnet (neodymium magnet before magnetization).
  • the pole pieces 2a and 2b provided adjacent to the magnets 1a and 1b on the magnetic field generation space 3 side are surfaces which are in contact with the magnets 1a and 1b at one end and the magnetic field generation space 3 at the other end and perpendicular to the magnetic field direction.
  • the yoke 2 connects between the pole pieces 2a and 2b opposite to the pair of magnets 1a and 1b.
  • the magnetic flux density can be improved by converging the magnetic flux of the magnets 1a and 1b to the surfaces of the pole pieces 2a and 2b facing the magnetic field generation space 3, and 2T (Tesla) or more necessary for magnetization.
  • FIG. FIG. 2 is a perspective view showing a configuration of a magnetizing apparatus according to Embodiment 2 of the present invention.
  • the magnetic circuit 4 of the magnetizing apparatus is composed of a pair of magnetic field generating permanent magnets 1a and 1b and a plurality of intermediate permanent magnets (hereinafter referred to as intermediate magnets) 1c provided therebetween.
  • the magnets 1a and 1b and the plurality of intermediate magnets 1c are arranged in a Halbach shape in an annular shape (in this embodiment, an octagonal column having a space in the center).
  • An octagonal columnar magnetic field generation space 3 is formed at the center of the octagonal columnar magnetic circuit 4.
  • each one octagonal column is centered on an octagonal column axis (an axis passing through the center of each of the upper and lower surfaces of the octagon).
  • the triangular prism divided into eight equal parts has a shape of a quadrangular prism having a trapezoidal horizontal cross section in which a notch portion is formed so as to form an inner side surface parallel to the outer side surface at a portion on the center side of the octagonal column.
  • the configuration of the magnetic circuit 4 is such that four or more even-numbered magnets including a pair of magnets whose magnetic field directions are oriented in the magnetic field generating space 3 are annularly arranged in Halbach, and four or more even angles having a space in the center.
  • the polygonal column may be used.
  • the magnetic circuit 4 is a magnet only, and forms a magnetic field in a plane orthogonal to the axial direction of the octagonal prism.
  • the magnetized piece 5 can be magnetized by the magnetic field generated in the magnetic field generating space 3 by inserting the magnetized piece 5 in the magnetic field generating space 3 along the axial direction of the octagonal prism.
  • the magnetic circuit can be formed only with permanent magnets without using pole pieces. Even when the length of the magnetizing device in the axial direction, that is, the length in the insertion direction of the magnetized piece 5 in the magnetic field generating space 3 is shorter than the length in the longitudinal direction of the magnetized piece 5, the magnetized piece 5. Can be magnetized regardless of the length of the magnetized piece 5, since the entire magnetized piece 5 can be magnetized by penetrating the inside of the magnetic field generating space 3 along the axial direction of the magnetizing device.
  • FIG. 3 is a perspective view showing the configuration of a magnetizing apparatus according to Embodiment 3 of the present invention.
  • the magnetized piece 5 is guided into the magnetic field generating space 3 or further magnetized in the magnetic field generating space 3.
  • a guide rail 6 is installed as a transport mechanism that passes in the axial direction of the apparatus.
  • the magnetized piece 5 can be inserted or penetrated into the magnetic field generating space 3 along the guide rail 6. Further, by fixing the guide rail 6 in the magnetic field generating space 3 with high precision (in this case, the guide rail 6 also has a function of a positioning mechanism), the magnetized piece 5 can be placed in a desired position (for example, a magnetic field). It can be accurately positioned so as to pass through the center of the generation space and the axial position of the polygonal column-shaped magnetizing device, thereby preventing poor magnetization.
  • a desired position for example, a magnetic field
  • FIG. 4 and 5 are perspective views showing the structure of a magnetizing apparatus according to Embodiment 4 of the present invention.
  • FIG. 4 shows a state before the magnetized piece 5 is inserted into the magnetizing device
  • FIG. 5 shows a state where the magnetized piece 5 is inserted into the magnetizing device.
  • the magnetized piece 5 is mounted on a tray 8 having a handle 8 a and inserted into the magnetic field generation space 3.
  • the tray 8 has a dimension capable of positioning the magnetized magnetic piece 5 at a desired position in the magnetic field generating space 3 when the magnetized piece 5 is mounted and inserted into the magnetic field generating space 3 (positioning mechanism).
  • the magnetized piece 5 can be passed through the magnetic field generating space 3 along the axial direction of the magnetizing device. As a result, the magnetized piece 5 can be magnetized manually and the magnetized piece 5 can be accurately positioned at a desired position in the magnetic field generating space 3, thereby preventing poor magnetization.
  • FIG. 6 is a perspective view showing the structure of a magnetizing apparatus according to Embodiment 5 of the present invention.
  • the magnetized piece 5 mounted on the tray 8 passes through the magnetic field generating space 3 along the axial direction of the magnetizing apparatus in the magnetizing apparatus of the second embodiment.
  • the belt conveyor 9 is installed and fixed.
  • the magnetized piece 5 can be magnetized automatically by using the tray 8 that can automatically magnetize the magnetized piece 5 and has the function of a positioning mechanism in the shape of the tray 8 of the fourth embodiment. 3 can be accurately positioned at a desired position in 3 so that a magnetization failure can be prevented.
  • Embodiment 6 7 and 8 are views for explaining a magnetizing apparatus according to Embodiment 6 of the present invention.
  • FIG. 7 is a perspective view of a magnetizing apparatus in the case of magnetizing a magnetized piece 5 having a cross-sectional shape of a D type (a saddle type, a semicylindrical type).
  • FIGS. 8A to 8C are diagrams in the case of magnetizing the magnetized magnetized piece 5 having a C-shaped (arch-shaped) cross section.
  • FIG. 8A is a perspective view
  • the direction of the magnetized piece 5 to be inserted into the magnetizing device is reversed for each polarity.
  • the inner side surface of the guide rail 6 is formed in accordance with the shape of both end surfaces of the magnetized magnetic piece 5 as shown in FIGS.
  • the magnetizing device does not require a power source, it is easy to prepare the magnetizing device for the N pole and the S pole separately. In that case, if one of the two magnetizing devices having the same configuration is turned upside down, both polarities can be handled.
  • FIG. 9 is a perspective view showing the configuration of a magnetizing apparatus according to Embodiment 7 of the present invention.
  • pole pieces 2a and 2b are provided adjacent to the respective magnetic field generating spaces 3 of the magnets 1a and 1b in the magnetizing apparatus of the second embodiment. ing.
  • the pole pieces 2a and 2b are arranged to face each other with the magnetic field generation space 3 interposed therebetween.
  • the magnetizing device can be downsized. It can. Further, it is possible to use the guide rail 6, the tray 8, and the belt conveyor 9 according to the third to sixth embodiments.
  • FIG. 10 is a perspective view showing the configuration of a magnetizing apparatus according to Embodiment 8 of the present invention.
  • the magnetizing apparatus of this embodiment in the magnetic circuit 4 of the magnetizing apparatus of the second embodiment, it is parallel to the magnetic flux direction of magnetization (the direction of the arrow indicating the magnetic field of the magnets 1a and 1b).
  • At least one of the intermediate magnets 1c is extracted to form the opening 10.
  • the opening 10 has such a size that the magnetized piece 5 can be inserted into the magnetic field generating space 3 from the opening 10 in a direction orthogonal to the axial direction of the magnetizing device in the horizontal plane.
  • the magnetization range can be adjusted at the insertion position of the magnetized piece 5 in the direction perpendicular to the axial direction into the magnetic field generating space 3.
  • the magnet assembly operation is facilitated.
  • FIG. FIG. 11 is a perspective view showing the configuration of a magnetizing apparatus according to Embodiment 9 of the present invention.
  • the magnetizing apparatus of this embodiment shown in FIG. 11 has a length necessary for magnetizing the field side magnet of the permanent magnet type linear motor.
  • the permanent magnet rows 11 and 12 of Halbach arrangement arranged in two rows in a straight line are arranged facing each other across the magnetic field generation space 3.
  • the intermediate permanent magnets 11 a and 12 a having a magnetic field parallel to the arrangement direction of the permanent magnets in the permanent magnet rows 11 and 12 are permanent in which the magnetic flux direction of the intermediate permanent magnet 11 a in the permanent magnet row 11 is opposed across the magnetic field generation space 3.
  • the intermediate permanent magnets 12a of the magnet array 12 are arranged so as to be opposite to each other in the magnetic flux direction.
  • the magnetic field generating permanent magnets 11b and 12b having a magnetic field perpendicular to the direction in which the permanent magnets in the permanent magnet arrays 11 and 12 are aligned are such that the magnetic flux generating direction of the magnetic field generating permanent magnet 11b in the permanent magnet array 11 is the magnetic field generating space 3.
  • FIG. 12 is a perspective view showing the structure of a magnetizing apparatus according to Embodiment 10 of the present invention.
  • the magnetizing apparatus of this embodiment shown in FIG. 12 is adjacent to the surface of the magnetic field generating permanent magnets 11b, 12b on the magnetic field generating space 3 side of each magnetic field generating permanent magnet 11b, 12b of the magnetizing apparatus of the eighth embodiment.
  • pole pieces 2a and 2b are provided.
  • the pole pieces 2a and 2b are made to face each other with the magnetic field generation space 3 interposed therebetween.
  • the magnetic flux generated by the magnetic field generating permanent magnets 11b and 12b can be converged by the pole pieces 2a and 2b, and a stronger magnetic field can be generated in the magnetic field generating space 3 than the magnetizing device of the eighth embodiment.
  • the magnetizing device can be reduced in size.
  • FIG. FIGS. 13 to 15 are views for explaining a method of manufacturing the permanent magnet type motor according to the present invention.
  • This manufacturing method includes magnetization of a magnetized piece and attachment of the magnetized magnetized piece, that is, a permanent magnet to a field yoke.
  • 13 and 14 are perspective views of a permanent magnet type magnetizing apparatus used in this manufacturing method.
  • FIG. 15 is a diagram showing a magnetized magnetized piece (magnet) affixed to a field yoke 15 for a permanent magnet motor.
  • the magnet Since the magnet is attached to the field yoke 15 (rotor core) for the permanent magnet motor using an adhesive (not shown), it is necessary to pressurize the magnet until the adhesive is cured. Therefore, in the present invention, the magnet is partially magnetized before being attached to the field yoke. Alternatively, the entire magnet may be incompletely magnetized with a slightly weak magnetic field. The partial magnetization or the weak magnetization (pre-magnetization) before the sticking is performed using the permanent magnet type magnetizing apparatus shown in FIG. Positioning and passing the adherent magnetic piece 5 with respect to the magnetic field generation space 3 of the magnetizing device as in the above-described embodiment so that the magnetic field is applied to the desired position of the adherent magnetic piece 5 with the desired intensity. Thus, for example, only the vicinity of both end surfaces of the magnetized piece 5, which is a portion that hits between the poles when fixed to the field yoke, is magnetized.
  • the magnetizing device of FIG. 14 is a combination of two magnetizing devices of Embodiment 8 (see FIG. 10) having openings 10 in the opposite direction, shifted in the axial direction, for example.
  • an adhesive is applied to the affixed surface of the magnetized magnetized piece 5 or field yoke 15, and the magnetized piece 5 is affixed to the field yoke 15 as shown in FIG.
  • the magnetized piece 5 is partially magnetized or weakly magnetized, there is no work risk due to magnetic attraction when being attached, and the magnetized piece 5 caused by an impact is not affected. There is no damage.
  • the magnetized piece 5 is completely magnetized before being attached, the magnetized piece 5 is attracted to the field yoke 15 with a strong magnetic force. At this time, if it is affixed carelessly, the magnetized piece 5 may be broken by an impact that collides with the field yoke 15. Therefore, when sticking the fully magnetized magnetized piece 5, it is necessary to work while paying attention not to break the magnetized piece 5.
  • the magnetized magnetic piece 5 pressurizes the bonded portion by its magnetic attraction force without being peeled off by its own weight before the adhesive is cured, so there is no need to prepare any other pressurizing means. . Since the applied pressure is uniform for all the magnetized magnetic pieces 5, there is also an effect of making the adhesive thickness uniform. On the other hand, when the magnetization is performed after the magnetized pieces 5 are attached, all the magnetized pieces 5 must be continuously pressed until the adhesive is cured. The more a multipolar motor is used, the larger the pressurizing jig becomes.
  • the magnetized piece 5 is only partially magnetized or weakly magnetized, after the adhesive is cured, the remaining part is energized by a power source and magnetized. Ordinary magnetization is performed using a magnetizing device (not shown).
  • the rotor of the permanent magnet type motor manufactured in this way is as shown in FIG.
  • the magnetizing magnetic field is parallel to the magnetization direction of the magnetized piece at the pole interval 16, that is, at both ends of the magnetized piece. It is hard to magnetize because it does not become. Therefore, in general, the power source capacity is increased due to both ends of the magnetized piece.
  • both ends of the magnetizing magnetic field are magnetized in advance, the capacity of the magnetizing power source here can be suppressed.
  • the magnetizing apparatus of the present invention is not limited to magnetizing a permanent magnet of a permanent magnet type motor, and can be used for magnetizing work in many other fields.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L'invention concerne une alimentation électrique d'aimantation de type aimant permanent, qui permet une aimantation sans utiliser une alimentation électrique d'aimantation et qui comprend : un espace de génération de champ magnétique (3) ayant une dimension qui permet à une pièce aimantée (5) de passer à travers ; et un circuit magnétique (4) qui comprend au moins une paire d'aimants permanents (1a, 1b) disposés à des positions se faisant face l'un l'autre avec l'espace de génération de champ magnétique entre eux et ayant mutuellement la même direction de champ magnétique, et qui forme un champ magnétique circulaire (4a) passant à travers l'espace de génération du champ magnétique à partir de l'un des aimants permanents, entrant dans l'autre aimant permanent et retournant finalement à l'autre aimant permanent. Le circuit magnétique (4) peut comprendre en outre, par exemple, des pièces polaires (2a, 2b) disposées sur les côtés de l'espace de génération du champ magnétique de la paire d'aimants permanents (1a, 1b), ayant une extrémité en contact avec l'aimant permanent et l'autre extrémité en contact avec l'espace de génération de champ magnétique, et ayant une forme telle que la surface de section transversale d'un plan orthogonal à la direction du champ magnétique diminue d'une extrémité vers l'autre, et une culasse (2) se connectant entre les côtés opposés des aimants permanents respectifs par rapport aux pièces polaires.
PCT/JP2009/068003 2009-10-19 2009-10-19 Dispositif d'aimantation et procédé de fabrication d'un moteur à aimant permanent WO2011048652A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2011537035A JP5409800B2 (ja) 2009-10-19 2009-10-19 永久磁石式電動機の製造方法
CN200980161730.7A CN102576595B (zh) 2009-10-19 2009-10-19 磁化装置、永磁电动机的制造方法
PCT/JP2009/068003 WO2011048652A1 (fr) 2009-10-19 2009-10-19 Dispositif d'aimantation et procédé de fabrication d'un moteur à aimant permanent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/068003 WO2011048652A1 (fr) 2009-10-19 2009-10-19 Dispositif d'aimantation et procédé de fabrication d'un moteur à aimant permanent

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JP (1) JP5409800B2 (fr)
CN (1) CN102576595B (fr)
WO (1) WO2011048652A1 (fr)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN105161251A (zh) * 2015-10-23 2015-12-16 天津博雅全鑫磁电科技有限公司 常温下静磁场充磁装置及充磁方法
JP2018049903A (ja) * 2016-09-21 2018-03-29 株式会社村田製作所 フェライトコアの着磁方法及び着磁装置
JPWO2020138094A1 (ja) * 2018-12-25 2021-11-18 ダイセルミライズ株式会社 表面に粗面化構造を有する希土類磁石前駆体または希土類磁石成形体とそれらの製造方法

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CN102879754B (zh) * 2012-09-19 2015-07-22 中国科学院电工研究所 一种用于质子电子双共振成像的磁场循环装置
CN203423549U (zh) * 2013-08-30 2014-02-05 中山大洋电机制造有限公司 一种永磁转子结构
CN105979463B (zh) * 2016-04-30 2023-11-17 苏州亿欧得电子有限公司 程控受话器自动磁化测试设备
TWI767971B (zh) * 2017-01-03 2022-06-21 日商東京威力科創股份有限公司 工作件磁化系統及其操作方法
CN107578882A (zh) * 2017-09-29 2018-01-12 杭州史宾纳科技有限公司 一种永磁式连续充磁方法及装置
JPWO2020195005A1 (fr) * 2019-03-28 2020-10-01
CN110010325B (zh) * 2019-04-12 2021-12-21 上海浩灵磁电器件有限公司 一种永磁式多极磁体充磁器
CN113903542B (zh) * 2021-09-02 2022-05-20 华中科技大学 一种直线型Halbach阵列的充磁方法及装置

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CN105161251A (zh) * 2015-10-23 2015-12-16 天津博雅全鑫磁电科技有限公司 常温下静磁场充磁装置及充磁方法
JP2018049903A (ja) * 2016-09-21 2018-03-29 株式会社村田製作所 フェライトコアの着磁方法及び着磁装置
JPWO2020138094A1 (ja) * 2018-12-25 2021-11-18 ダイセルミライズ株式会社 表面に粗面化構造を有する希土類磁石前駆体または希土類磁石成形体とそれらの製造方法
JP2022000907A (ja) * 2018-12-25 2022-01-04 ダイセルミライズ株式会社 表面に粗面化構造を有する希土類磁石前駆体または希土類磁石成形体の製造方法
JP2022002318A (ja) * 2018-12-25 2022-01-06 ダイセルミライズ株式会社 希土類磁石前駆体または希土類磁石成形体と、それを使用した複合成形体
JP7100185B2 (ja) 2018-12-25 2022-07-12 ダイセルミライズ株式会社 希土類磁石前駆体または希土類磁石成形体と、それを使用した複合成形体
US11810713B2 (en) 2018-12-25 2023-11-07 Daicel Miraizu Ltd. Rare earth magnet precursor or rare earth magnet molded body having roughened structure on surface and method for manufacturing same

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CN102576595A (zh) 2012-07-11
CN102576595B (zh) 2014-12-10
JPWO2011048652A1 (ja) 2013-03-07
JP5409800B2 (ja) 2014-02-05

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