WO2017016724A1 - Rotor d'une machine électrique - Google Patents

Rotor d'une machine électrique Download PDF

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Publication number
WO2017016724A1
WO2017016724A1 PCT/EP2016/062797 EP2016062797W WO2017016724A1 WO 2017016724 A1 WO2017016724 A1 WO 2017016724A1 EP 2016062797 W EP2016062797 W EP 2016062797W WO 2017016724 A1 WO2017016724 A1 WO 2017016724A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
receiving openings
permanent magnets
magnet
receiving opening
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
Application number
PCT/EP2016/062797
Other languages
German (de)
English (en)
Inventor
Stefan Schuerg
Barlas Turgay
Harald Laue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2017016724A1 publication Critical patent/WO2017016724A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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

Definitions

  • the invention is based on a rotor of an electrical machine according to the preamble of the main claim.
  • Receiving openings provided, which are arranged in a V-shape to each other and in each of which a permanent magnet is arranged. Seen in the radial direction, a magnet holding portion of the rotor is formed between the two receiving openings of a magnetic pole and the outer circumference of the rotor, which includes the two
  • Main claim has the advantage that the flowing over the webs magnetic leakage flux is avoided by eliminating the webs and the resulting additional mechanical stress of the magnet-holding portions is evenly distributed over each magnet-holding section.
  • the filler is a thermoset, which completely fills the receiving openings each provided with two permanent magnets, in particular, the spaces between each of the magnet holding portion of the rotor and the permanent magnet.
  • the permanent magnets each act mechanically with a uniform surface load on the corresponding magnet-holding section.
  • a thermoplastic has a higher viscosity than a thermoset and would not completely fill the gap between each of the magnet-holding portion and the permanent magnet, so that in each case one
  • the rotor per magnetic pole has a receiving opening in which two permanent magnets are arranged, since comparatively small magnets can be used in this way, which in the
  • Receiving opening each V-shaped can be arranged.
  • the receiving openings are each designed in such a way that the permanent magnets arranged in the respective receiving opening are arranged in a V-shaped manner relative to each other. Due to the V-shaped arrangement of
  • Permanent magnets can achieve a concentration of the magnetic flux per magnetic pole. It is very advantageous if the receiving openings are each delimited by walls, of which in each case one wall, in particular the radially outer wall, has a section projecting into the corresponding receiving opening, on which at least one of the permanent magnets is supported at least in sections. This has the advantage that a predetermined gap between the magnet holding portion and the permanent magnet is set, which ensures a complete filling of the gap with thermoset. According to an advantageous embodiment, the projecting portion protrudes by a maximum of 0.1 millimeters into the receiving opening.
  • the projecting portion in each case parallel to the opposite wall of the corresponding receiving opening and / or parallel to a surface of one of the in the corresponding receiving opening
  • Permanent magnet in each case flat against the projecting portion and the projecting portion of the opposite wall of the receiving opening.
  • Receiving opening is formed in each case between two provided in the wall stages. Through the steps, a defined gap between the corresponding wall of the receiving opening and the permanent magnet is set, so that a complete filling of this gap is ensured with thermoset.
  • the receiving openings have means for fixing the position of the permanent magnets, since in this way the position of the magnets is defined in the receiving openings and the thermoset is evenly distributed between the walls of the respective receiving opening and the respective magnet.
  • Fig.l shows a partial view of the rotor according to the invention according to a first embodiment
  • FIG. 2 shows a partial view of the rotor according to the invention after a second
  • FIG. 1 shows a partial view of the rotor according to the invention of an electric motor
  • the rotor 1 is rotatable about a rotor axis 2 and formed as a so-called laminated core, which consists of a stack of electrical sheets.
  • receiving openings 3 are provided near its periphery, in each of which two permanent magnets 4 are added.
  • the permanent magnets 3 are in the Receiving openings 2 held by a filler 5, which fills the spaces between walls of the receiving openings 3 and the permanent magnet 4.
  • the receiving openings 2 are closed as seen in the radial direction, wherein each of the receiving opening 2 spanning portion of the rotor 1 is referred to as a magnetic holding portion 10.
  • This magnet-holding portion 10 is subjected to strong bending during rotation of the rotor 1 in each case by the centrifugal forces of the permanent magnets 4 in the radial direction.
  • the filler 5 is a thermosetting plastic.
  • a BMC thermoset so a bulk molding compound thermoset, is used, which contains glass fibers.
  • the rotor 1 has a plurality of magnetic poles 8, wherein per magnetic pole 8 a
  • Receiving opening 3 is provided with two permanent magnets 4 received therein.
  • the receiving openings 3 are each formed such that the provided in the respective receiving opening 3 permanent magnets 4 are arranged at an angle less than 180 degrees, in particular V-shaped, to each other.
  • the receiving openings 3 are each bounded by walls 9, of which in each case a wall 9, in particular with respect to the rotor axis 2 radially outer
  • the at least one projecting wall section 10 projects, for example, by 0.05 to 0.2 millimeters, in particular by 0.1 millimeters, into the receiving opening 3.
  • the projecting wall section 10 of the receiving opening 3 can be formed in each case between two provided in the corresponding wall 9 stages 12. The area of each projecting wall portion 10 is smaller than that of the projecting one
  • a separate projecting wall portion 10 on the radially outer wall 9, which is part of the magnet-holding portion 10 is provided.
  • the projecting wall section 10 is in each case parallel to a projecting wall section 10
  • each receiving opening 3 On the at least one projecting wall 10 opposite side of each receiving opening 3, for example, means 11 for fixing the position of the two permanent magnets 4 are provided, each in the corresponding
  • Projecting opening 3 protrude and are designed, for example, paragraph-shaped or nose-shaped. 2 shows a partial view of the rotor according to the invention of an electric machine according to a second embodiment.
  • a single projecting wall portion 10 is formed, on which the two permanent magnets 4 are supported together.
  • the protruding wall portion 10 has two surfaces which are arranged at an angle smaller than 180 degrees in accordance with the arrangement of the permanent magnets 4 to each other.

Landscapes

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

Abstract

On connaît déjà un rotor d'une machine électrique avec des ouvertures de logement et avec des aimants permanents, logés dans les ouvertures de logement, qui sont maintenus dans les ouvertures de logement au moyen d'une résine synthétique, qui sera désignée par la suite par le terme de matière de remplissage et qui remplit l'espace intermédiaire entre les parois des ouvertures de logement et les aimants permanents. Avec ce mode de réalisation sont prévues, par pôle magnétique, deux ouvertures de logement, séparées l'une de l'autre par une nervure, qui sont disposées l'une par rapport à l'autre en forme de V et dans chacune desquelles est disposé un aimant permanent. Vu dans une direction radiale, entre les deux ouvertures de logement d'un pôle magnétique et le pourtour externe du rotor est formé un secteur de maintien d'aimant du rotor qui soutient les deux aimants permanents et est fixé mécaniquement au reste du rotor par la nervure. Un flux de dispersion magnétique non souhaité, qui ne contribue pas à générer le couple, peut toutefois s'écouler par le biais de cette nervure. Pour le rotor selon l'invention, le flux de dispersion magnétique s'écoulant par le biais de la nervure est empêché en ce que les nervures sont omises et que la charge mécanique supplémentaire des secteurs de maintien d'aimant en résultant est répartie uniformément sur chaque secteur de maintien d'aimant. Selon l'invention, la matière de remplissage (5) est une résine thermodurcissable.
PCT/EP2016/062797 2015-07-27 2016-06-06 Rotor d'une machine électrique Ceased WO2017016724A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015214169.1 2015-07-27
DE102015214169.1A DE102015214169A1 (de) 2015-07-27 2015-07-27 Rotor einer elektrischen Maschine

Publications (1)

Publication Number Publication Date
WO2017016724A1 true WO2017016724A1 (fr) 2017-02-02

Family

ID=56101474

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/062797 Ceased WO2017016724A1 (fr) 2015-07-27 2016-06-06 Rotor d'une machine électrique

Country Status (2)

Country Link
DE (1) DE102015214169A1 (fr)
WO (1) WO2017016724A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108512328A (zh) * 2017-02-23 2018-09-07 发那科株式会社 转子
CN110462995A (zh) * 2017-03-29 2019-11-15 日立汽车系统株式会社 旋转电机的转子的制造方法
CN110957827A (zh) * 2019-12-03 2020-04-03 重庆宝迪科技有限公司 一种有利于保证磁路对称的转子冲片结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111769668A (zh) * 2020-07-09 2020-10-13 精进电动科技股份有限公司 一种内置式永磁体电机转子结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007063307A1 (de) * 2007-12-28 2009-07-02 Robert Bosch Gmbh Montageverfahren zum Einpassen eines Permanentmagneten in ein Halteelement
EP2613426A1 (fr) * 2010-09-02 2013-07-10 Sumitomo Bakelite Co., Ltd. Composition de résine de fixation destinée à être utilisée dans un rotor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007063307A1 (de) * 2007-12-28 2009-07-02 Robert Bosch Gmbh Montageverfahren zum Einpassen eines Permanentmagneten in ein Halteelement
EP2613426A1 (fr) * 2010-09-02 2013-07-10 Sumitomo Bakelite Co., Ltd. Composition de résine de fixation destinée à être utilisée dans un rotor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108512328A (zh) * 2017-02-23 2018-09-07 发那科株式会社 转子
US10707710B2 (en) * 2017-02-23 2020-07-07 Fanuc Corporation Rotor with sintered u-shaped magnets
CN108512328B (zh) * 2017-02-23 2022-02-15 发那科株式会社 转子
CN110462995A (zh) * 2017-03-29 2019-11-15 日立汽车系统株式会社 旋转电机的转子的制造方法
CN110957827A (zh) * 2019-12-03 2020-04-03 重庆宝迪科技有限公司 一种有利于保证磁路对称的转子冲片结构

Also Published As

Publication number Publication date
DE102015214169A1 (de) 2017-02-02

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