WO2017209469A1 - Électroaimant et son procédé de fabrication - Google Patents

Électroaimant et son procédé de fabrication Download PDF

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Publication number
WO2017209469A1
WO2017209469A1 PCT/KR2017/005589 KR2017005589W WO2017209469A1 WO 2017209469 A1 WO2017209469 A1 WO 2017209469A1 KR 2017005589 W KR2017005589 W KR 2017005589W WO 2017209469 A1 WO2017209469 A1 WO 2017209469A1
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WO
WIPO (PCT)
Prior art keywords
electromagnet
core
manufacturing
coil
thin
Prior art date
Application number
PCT/KR2017/005589
Other languages
English (en)
Korean (ko)
Inventor
이종희
정의진
엄희윤
장기원
Original Assignee
주식회사 엔젤
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 주식회사 엔젤 filed Critical 주식회사 엔젤
Publication of WO2017209469A1 publication Critical patent/WO2017209469A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material

Definitions

  • the present invention relates to an electromagnet and a manufacturing method thereof, and more particularly to an electromagnet having a high performance and efficiency of a core and a coil constituting the electromagnet and a manufacturing method thereof.
  • an electromagnet is composed of a core and a coil, and a conventional core is formed by powder metallurgy, and a circular coil is wound around the core and used.
  • the core formed by powder metallurgy has a problem that the saturation magnetic flux density and permeability are lowered because the density and distribution of iron are low.
  • the circular coil of the general type has a problem in that a large amount of voids are formed between the coils when wound around the core, thereby lowering the coil spot ratio and lowering the magnetic flux density relative to the volume.
  • the circular coil of the general form is subjected to enamel coating, the cooling efficiency is lowered, there was a problem of melting at high temperatures.
  • the present invention has been made to solve the problems of the prior art as described above, by manufacturing the core constituting the electromagnet by a powder injection molding method, to increase the density and distribution of iron in the core to increase the strength and rigidity,
  • the present invention provides an electromagnet capable of increasing the saturation magnetic flux density and permeability by a constant dispersion and a manufacturing method thereof.
  • the thin coil by coating the thin coil with a ceramic insulator, it provides an electromagnet that can easily heat dissipation of the coating layer and withstands melting even at high temperatures, and a method of manufacturing the same.
  • the coating distribution is even, the coating layer is thin, the heat dissipation effect is increased, it provides an electromagnet capable of minimizing voids and a method of manufacturing the same.
  • Electromagnet and a method for manufacturing the same according to the present invention, a plurality of cores are provided in an annular shape inside the motor; And a thin coil formed in a thin stripe shape and wound around an outer circumferential surface of the core, wherein the thin coil comprises: a copper plate provided in a thin stripe shape; And a graphene plate provided on an upper portion or a lower portion of the copper plate, and a coating layer provided on upper and lower portions of the copper plate and the graphene plate.
  • the core constituting the electromagnet by a powder injection molding method, by increasing the density and distribution of iron in the core to increase the strength and stiffness, to increase the saturation magnetic flux density and permeability by a constant dispersion
  • an electromagnet by increasing the density and distribution of iron in the core to increase the strength and stiffness, to increase the saturation magnetic flux density and permeability by a constant dispersion
  • an electromagnet and a method of manufacturing the same.
  • an electromagnet capable of increasing the coil spot ratio and minimizing voids and increasing the thermal conductivity and cooling efficiency is provided.
  • an electromagnet capable of easily dissipating heat of the coating layer and being able to withstand even at high temperatures without melting.
  • the coating distribution is even, the coating layer is thin, the heat dissipation effect is increased, it provides an electromagnet capable of minimizing voids and a method of manufacturing the same.
  • FIG. 1 is a view showing a state of an electromagnet and a method of manufacturing the same according to the present invention.
  • FIG. 2 is a view showing a state of the filter unit of the electromagnet and the manufacturing method according to the present invention.
  • FIG. 3 is a view showing a state in which the components of the electromagnet and the manufacturing method of the present invention are connected.
  • Figure 4 is a block diagram showing a step of manufacturing a core of the electromagnet and a method for manufacturing the same according to the present invention.
  • the electromagnet according to the present invention includes a core 20 and a thin coil 30.
  • the core 20 is provided.
  • the core 20 is provided in a square pillar shape, a plurality of annular inside the motor 10 is installed.
  • the motor 10 includes an axial motor, a radial motor, a claw pole motor, and the like.
  • the core 20 constitutes an electromagnet inside the motor 10 together with the following thin coil 30.
  • the core 20 may be formed in various shapes and is formed of a soft magnetic composite material.
  • the soft magnetic composite material is also called smc or soft magnetic composite.
  • the core 20 is manufactured by powder injection molding.
  • the powder injection molding is also called pim (powder injection molding) or mim (metal injection molding). Since the core 20 is manufactured by a powder injection molding method, the density of the metal is higher than that of the core manufactured by the conventional powder metallurgy method, thereby increasing the strength and rigidity. In addition, there is an effect of improving the saturation magnetic flux density and permeability.
  • the thin coil 30 is provided on the outer circumferential surface of the core 20.
  • the thin coil 30 is formed in a thin or thin plate shape and wound around the outer circumferential surface of the core 20.
  • the thin coil 30 includes a copper plate 31, a graphene plate 32, and a coating layer 33.
  • the copper plate 31 is provided in a thin strip shape.
  • the copper plate 31 may be provided in plurality in the vertical direction.
  • the graphene plate 32 is formed of graphene, and may be installed between one side or between the copper plates 31.
  • the graphene is a material that is more electrically conductive than copper and has a higher thermal conductivity than diamond, and may be formed of any material as long as it is installed in the thin coil 30 so as to be electrically conductive and increase thermal conductivity.
  • the coating layer 33 is provided on the upper and lower portions of the copper plate 31 and the graphene plate 32, and is provided on the upper or lower portion of the copper plate 31.
  • the coating layer 33 is composed of a ceramic insulator, and may be formed of any material as long as the performance of the thin coil 30 can be improved.
  • the copper plate 31, the graphene plate 32, and the coating layer 33 are combined to form the thin coil 30.
  • the thin coil 30 is formed of a single layer in which a copper plate 31, a graphene plate 32, and a coating layer 33 are combined, or a graphene plate installed between a plurality of copper plates 31 and the copper plate 31.
  • the copper plate 31 and the graphene plate 32 may be formed in a multilayered combination of coating layers 33 provided on upper and lower portions thereof.
  • the thin coil 30 may be formed only of the copper plate 31 and the coating layer 33.
  • the voids that may be formed between the thin coils 30 may be minimized, thereby increasing cooling efficiency. That is, due to the plurality of voids generated between the coils when the conventional coil is wound, since the heat is not stored and discharged in the voids, the cooling efficiency is solved and the cooling efficiency is increased.
  • the coil spot ratio is increased as compared with the conventional coil, thereby increasing the volume-to-volume efficiency.
  • the coil spot ratio refers to the ratio of the cross-sectional area of the conductor making the coil and the cross-sectional area of the entire coil.
  • the thin coil 30 Since the thin coil 30 is formed in a thin flat shape, it may be easily coated with a ceramic insulator.
  • the ceramic insulator refers to silicon, boron nitride, boron, zirconia and the like. Since the thin coil 30 is coated with a ceramic insulator, heat resistance is increased, so that the thin coil 30 does not melt or deform even at high temperatures. In addition, the conventional coil solves the cooling efficiency is lowered by the enamel coating, the cooling efficiency is increased.
  • the electromagnet is formed including a feedstock manufacturing step 110, an injection molding step 120, a binder removal step 130, a sintering step 140, and a coil winding step 150. .
  • the feedstock manufacturing step 110 by mixing a trace amount of boron nitride or boron, which serves as an insulating coating function and a surface active agent to the metal powder and polymer binder having different powder sizes, in the injection molding step 120 It is a step to prepare a feedstock of a suitable size to be used as a material.
  • the injection molding step 120 is a step of manufacturing the core 20 by injection molding the feedstock.
  • the core 20 manufactured in the injection molding step 120 is in a state in which the metal powder and the polymer binder are mixed.
  • the metal powder and the polymer binder constituting the core 20 may be formed more densely because the sizes of the powder grains are different from each other, and the core 20 collapses in the following sintering step 140. Is prevented.
  • the binder removal step 130 is a step of removing the polymer binder from the core 20 in which the metal powder and the polymer binder prepared in the injection molding step 120 are mixed.
  • a method of removing there is a method of using a chemical or heat treatment.
  • the core 20, which has passed through the binder removal step 130, is removed with the polymer binder, leaving only pure metal and ceramic insulators.
  • the sintering step 140 by applying a secondary heat to the core 20 remaining only pure metal and ceramic-based insulator through the binder removal step 130 to reduce the voids and further increase the density and strength of the final core You are done.
  • the coil winding step 150 is to wind the final core completed through the sintering step 130 with the thin coil 30.
  • the powder injection molding comprising the feedstock manufacturing step 11 to the sintering step 140 has a merit in that a small amount of boron nitride or boron is added to facilitate decomposition of the oxidized impurities in comparison with the conventional powder injection molding.
  • the coating distribution is even, the coating layer is thin, the heat dissipation effect is high, there is an advantage that the voids are minimized.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

La présente invention porte sur un électroaimant et son procédé de fabrication, et sur : un électroaimant dans lequel les performances et l'efficacité d'un noyau et d'une bobine constituant l'électroaimant sont améliorées; et son procédé de fabrication. La présente invention porte sur un électroaimant, et son procédé de fabrication, comprenant : une pluralité de noyaux disposés en une forme annulaire à l'intérieur d'un moteur; et une bobine mince prenant la forme d'une bande mince et enroulée sur une surface circonférentielle extérieure du noyau, la bobine mince comprenant : une plaque de cuivre disposée sous la forme d'une bande mince; une plaque de graphène disposée sur ou sous la plaque de cuivre; et une couche de revêtement disposée sur et sous la plaque de cuivre et la plaque de graphène. Selon un mode de réalisation, la présente invention porte sur : un électroaimant dans lequel des noyaux constituant l'électroaimant sont fabriqués par un procédé de moulage par injection d'une poudre, ce qui permet d'augmenter la résistance mécanique et la rigidité par augmentation de la densité et de la distribution de fer à l'intérieur des noyaux, et de répartir uniformément et d'augmenter la densité de flux magnétique à saturation et la perméabilité magnétique; et un procédé de fabrication associé.
PCT/KR2017/005589 2016-05-30 2017-05-29 Électroaimant et son procédé de fabrication WO2017209469A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0066496 2016-05-30
KR1020160066496A KR101850107B1 (ko) 2016-05-30 2016-05-30 전자석 및 그 제조방법

Publications (1)

Publication Number Publication Date
WO2017209469A1 true WO2017209469A1 (fr) 2017-12-07

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PCT/KR2017/005589 WO2017209469A1 (fr) 2016-05-30 2017-05-29 Électroaimant et son procédé de fabrication

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KR (1) KR101850107B1 (fr)
WO (1) WO2017209469A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102158474B1 (ko) 2019-09-09 2020-09-22 주식회사 알앤디웨어 연구용 전자석

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120037289A (ko) * 2010-10-11 2012-04-19 현대자동차주식회사 연자성 분말로 제조된 고정자 코어를 구비한 차량용 모터 어셈블리
JP2012144421A (ja) * 2010-12-21 2012-08-02 Meijo Univ グラフェン配線構造
WO2016006943A1 (fr) * 2014-07-09 2016-01-14 재단법인대구경북과학기술원 Nanofil métallique ayant une structure coque-noyau revêtue de graphène, et son procédé de fabrication
KR20160016393A (ko) * 2014-08-05 2016-02-15 전정호 금속과 비금속 나노물질을 이용한 고효율의 제너레이터가 장착된 스쿠터
JP2016039191A (ja) * 2014-08-05 2016-03-22 株式会社カネカ コイル

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120037289A (ko) * 2010-10-11 2012-04-19 현대자동차주식회사 연자성 분말로 제조된 고정자 코어를 구비한 차량용 모터 어셈블리
JP2012144421A (ja) * 2010-12-21 2012-08-02 Meijo Univ グラフェン配線構造
WO2016006943A1 (fr) * 2014-07-09 2016-01-14 재단법인대구경북과학기술원 Nanofil métallique ayant une structure coque-noyau revêtue de graphène, et son procédé de fabrication
KR20160016393A (ko) * 2014-08-05 2016-02-15 전정호 금속과 비금속 나노물질을 이용한 고효율의 제너레이터가 장착된 스쿠터
JP2016039191A (ja) * 2014-08-05 2016-03-22 株式会社カネカ コイル

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Publication number Publication date
KR101850107B1 (ko) 2018-04-20
KR20170135104A (ko) 2017-12-08

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