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WO2018127252A2 - Inducteur de type assemblage et son procédé de fabrication - Google Patents

Inducteur de type assemblage et son procédé de fabrication Download PDF

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Publication number
WO2018127252A2
WO2018127252A2 PCT/CN2018/083646 CN2018083646W WO2018127252A2 WO 2018127252 A2 WO2018127252 A2 WO 2018127252A2 CN 2018083646 W CN2018083646 W CN 2018083646W WO 2018127252 A2 WO2018127252 A2 WO 2018127252A2
Authority
WO
WIPO (PCT)
Prior art keywords
core
hat
shaped
cap
filled
Prior art date
Application number
PCT/CN2018/083646
Other languages
English (en)
Chinese (zh)
Other versions
WO2018127252A3 (fr
Inventor
苏雨坡
李有云
何海根
黄敬新
侯勤田
Original Assignee
深圳顺络电子股份有限公司
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 深圳顺络电子股份有限公司 filed Critical 深圳顺络电子股份有限公司
Priority to PCT/CN2018/083646 priority Critical patent/WO2018127252A2/fr
Priority to CN201880000301.0A priority patent/CN108701531A/zh
Publication of WO2018127252A2 publication Critical patent/WO2018127252A2/fr
Publication of WO2018127252A3 publication Critical patent/WO2018127252A3/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/04—Fixed inductances of the signal type with magnetic core
    • H01F17/043—Fixed inductances of the signal type with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/255—Magnetic cores made from particles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F27/292—Surface mounted devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F3/14—Constrictions; Gaps, e.g. air-gaps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type
    • H01F17/04—Fixed inductances of the signal type with magnetic core
    • H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core

Definitions

  • the present invention relates to magnetic electronic components, and more particularly to an assembled inductor and a method of fabricating the same.
  • the assembled inductor needs to be centered to control the air gap to keep the inductance stable
  • the dimensional tolerance of the magnetic core material has a great influence on the electrical properties and needs to be strictly controlled
  • the automatic centering control air gap is more difficult, mainly in a semi-automatic way.
  • the main object of the present invention is to provide an assembled inductor and a manufacturing method thereof for solving the deficiencies of the prior art, and to solve the problem that the existing assembled inductor air gap is difficult to control.
  • the present invention adopts the following technical solutions:
  • An assembled inductor comprising a hat core, a T-shaped core, a conductive winding and a pair of hardware assemblies, wherein the inside of the hat core is formed with a groove, and the conductive winding is wound around the T-shaped core a middle pillar of the T-shaped magnetic core and the conductive coil inserted into the recess inside the hat core, a center pillar of the T-shaped magnetic core and a body of the hat core a gap having a predetermined separation distance between the bottoms of the grooves, forming an air gap, the hardware assembly being fixed to the hat core and electrically connected to the conductive winding, the hat core and the
  • the T-shaped magnetic cores are fixed by an adhesive at least filled in a bottom region of the recess inside the cap core, the filling of the bottom region of the recess inside the cap core
  • the binder fills the air gap.
  • the hardware assembly is fixed to the hat core by an adhesive.
  • the material of the T-shaped magnetic core and the hat magnetic core is NiZn ferrite, the relative magnetic permeability is 350-500, and the interval of the air gap is 0.25 mm-0.45 mm.
  • the material of the T-shaped magnetic core is alloy powder, the relative magnetic permeability is 45-60, the material of the hat magnetic core is NiZn ferrite, and the relative magnetic permeability is 350-500, the air gap The interval ranges from 0.15 mm to 0.25 mm.
  • the material of the T-shaped magnetic core is MnZn ferrite, the relative magnetic permeability is 2000-3500, the material of the hat magnetic core is NiZn ferrite, the relative magnetic permeability is 350-500, and the air gap is The interval ranges from 0.30 mm to 0.50 mm.
  • the material of the T-shaped magnetic core and the hat core is an alloy powder, the relative magnetic permeability is 45-60, and the width of the air gap is not more than 0.20 mm.
  • the binder filled in the bottom region of the groove inside the cap core is an epoxy system adhesive having a relative magnetic permeability of 1.
  • spherical or nearly spherical soft magnetic powder particles are mixed in the binder filled in the bottom region of the groove inside the cap core.
  • the binder having a bottom region of the groove filled inside the cap core has a relative magnetic permeability of 1.5 to 6.0.
  • a method of fabricating the assembled inductor includes the following steps:
  • At least the bottom region of the groove is filled with an adhesive
  • the obtained semi-finished product is baked to solidify the binder to obtain a final product, that is, an assembled inductor.
  • the winding manner of winding the conductive winding onto the center pillar of the T-shaped core is ⁇ winding.
  • spherical or nearly spherical soft magnetic powder particles are mixed in the binder filled in the bottom region of the groove inside the cap core.
  • the present invention provides an assembled inductor that can achieve mass automated production and maintain high performance stability and a method of manufacturing the same.
  • the magnet adopts a combination of a hat core having a groove and a T-shaped core to move the position of the air gap to the inside of the core, thereby eliminating the need for centering control; and greatly changing the structure of the core
  • the influence of the structure of the assembled inductor on the air gap is reduced, and the tolerance requirement for the magnetic core is expanded from ⁇ 0.05 mm to ⁇ 0.1 mm, which is advantageous for mass automated production.
  • the core adopts a combination of a hat core and a T-shaped core to move the air gap position to the inside of the assembly, so that the product performance maintains high stability;
  • the influence factors of air gap include two aspects of structural control precision and core tolerance of inductive equipment.
  • the technical solution of the invention greatly reduces the influence of the structure of the inductive device on the air gap, and reduces the requirement for the core tolerance;
  • the invention is advantageous for realizing automatic mass production of assembled inductors while ensuring high stability of product quality.
  • FIG. 1 is an exploded view of an assembled inductor according to a first embodiment of the present invention
  • FIG. 2(a) is a schematic view of the assembled inductor product of the first embodiment of the present invention.
  • Figure 2 (b) is a cross-sectional view showing the assembled inductor of the first embodiment of the present invention
  • Figure 3 (a) is a cross-sectional view showing the assembled inductor of the second embodiment of the present invention.
  • 3(b) is a schematic view showing an adhesive inside a cap core in the assembled inductor of the second embodiment of the present invention
  • FIG. 4(a) is a schematic view showing the finished product of the assembled inductor according to the third embodiment of the present invention.
  • Figure 4 (b) is a cross-sectional view showing the assembled inductor of the third embodiment of the present invention.
  • Fig. 4 (c) is a left side view of the assembled inductor of the third embodiment of the present invention.
  • an assembled inductor includes a hat core 11, a T-shaped core 10, a conductive winding 12, and a pair of hardware assemblies 13, the hat core
  • the inside of the 11 is formed with a groove
  • the conductive winding 12 is wound around the center pillar of the T-shaped core 10, the center pillar of the T-shaped core 10, and the conductive winding is inserted into the hat core 11
  • a gap 16 of a predetermined distance between the center pillar of the T-shaped core 10 and the bottom of the groove of the hat core 11 forms an air gap
  • the hardware assembly The member 13 is fixed on the hat core 11 and electrically connected to the conductive winding 12, and the hat core 11 and the T-shaped core 10 are filled at least inside the hat core 11
  • the adhesive 15, 17, 18 of the bottom region of the recess is fixed, and the adhesive filling the bottom region of the recess inside the cap core 11 fills the air gap.
  • the hardware assembly 13 is secured to the hat core 11 by an adhesive 14.
  • the air gap formed by the combination of the T-shaped magnetic core 10 and the hat core 11 has an interval ranging from 0.1 mm to 0.6 mm.
  • the T-shaped magnetic core 10 and the hat core 11 are made of NiZn ferrite, the relative magnetic permeability is 350-500, and the air gap is spaced between 0.25 mm and 0.45. Mm.
  • the T-shaped magnetic core 10 is made of alloy powder, the relative magnetic permeability is 45-60, and the material of the hat core 11 is NiZn ferrite, and the relative magnetic permeability is 350 to 500, the interval of the air gap is in the range of 0.15 mm to 0.25 mm.
  • the T-shaped magnetic core 10 is made of MnZn ferrite, the relative magnetic permeability is 2000 to 3500, the material of the hat core 11 is NiZn ferrite, and the relative magnetic permeability. 350 to 500, the interval of the air gap is in the range of 0.30 mm to 0.50 mm.
  • the T-shaped magnetic core 10 and the hat core 11 are made of alloy powder having a relative magnetic permeability of 45 to 60 and a width of the air gap of not more than 0.20 mm.
  • the binder filled in the bottom region of the recess inside the cap core 11 is an epoxy system adhesive having a relative magnetic permeability of one.
  • the binder filled in the bottom region of the groove inside the cap core 11 is mixed with spherical or nearly spherical soft magnetic powder particles.
  • the binder having a bottom region of the recess filled inside the cap core 11 has a relative magnetic permeability of 1.5 to 6.0.
  • a method of fabricating the assembled inductor includes the following steps:
  • the obtained semi-finished product is baked, and the binders 15, 17, 18 (and, if appropriate, the binder 14) are solidified to obtain a final product, that is, an assembled inductor.
  • the winding of the conductive winding 12 onto the center post of the T-shaped core 10 is an alpha winding.
  • the binder filled in the bottom region of the groove inside the cap core 11 is mixed with spherical or nearly spherical soft magnetic powder particles.
  • an assembled inductor includes a hat core 11, a T-shaped core 10, a conductive winding 12 and a pair of hardware assemblies 13, the inside of the hat core 11.
  • the conductive winding 12 is wound around the center pillar of the T-shaped core 10, the center pillar of the T-shaped core 10, and the conductive winding around the inside of the hat core 11
  • the hardware assembly 13 passes
  • the adhesive 14 is fixed on the hat core 11 and electrically connected to the conductive winding 12, and the hat core 11 and the T-shaped core 10 are filled in the hat core 11
  • the adhesive 15, 15, 18 of the bottom region of the inner groove is fixed, and the adhesive 15, 17, 18 filling the bottom region of the groove inside the cap core 11 will The air gap is filled.
  • the assembled semi-finished product is solidified in an oven, and the binders 14, 15 are solidified to obtain a final product.
  • the assembled inductor of the second embodiment is different from the assembled inductor of the first embodiment only in the second embodiment, and is filled in the inside of the hat core 11 .
  • the binder 17 in the bottom region of the groove is mixed with spherical or approximately spherical soft magnetic powder particles, and in the first embodiment, the groove is filled in the inside of the hat core 11.
  • the binder 15 in the bottom region does not contain the soft magnetic powder particles.
  • the assembled semi-finished product is solidified in an oven, and the binders 14, 17 are solidified to obtain a final product.
  • the assembled inductor of the third embodiment is different from the assembled inductor of the first embodiment only in that the hardware assembly of the first embodiment is formed with the conductive winding.
  • the electrical connection is located on a diagonal of the approximately square top blade of the T-shaped core at an angle between the two sides of the tip blade; and the hardware assembly of the third embodiment is The location where the electrically conductive windings form an electrical connection is on the edge of the approximately square top blade of the T-shaped core, rather than at the corner of the edge and edge of the tip blade.
  • the hardware assembly of the third embodiment is electrically connected to the conductive winding, and only needs to form a relatively small gap on the top blade of the T-shaped core and the hardware assembly.
  • the hardware assembly is electrically connected to the conductive winding in the T-shaped magnetic core. Therefore, compared with the first embodiment, the contact area of the T-shaped magnetic core and the hat magnetic core of the third embodiment is compared. Large, thus having better structural stability and magnetic shielding properties.
  • the steps employed in the method of fabricating the assembled inductor of this embodiment may be the same as those employed in the method of fabricating the assembled inductor of the first embodiment or the second embodiment.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

L'invention concerne un inducteur de type assemblage et son procédé de fabrication. L'inducteur de type assemblage comprend un noyau magnétique formant capuchon, un noyau magnétique en T, un bobinage conducteur et une paire de pièces d'assemblage matérielles. Un évidement est réalisé à l'intérieur du noyau magnétique formant capuchon. Le bobinage conducteur est enroulé sur une colonne centrale du noyau magnétique en T. La colonne centrale du noyau magnétique en T et le bobinage conducteur sont placés dans l'évidement ménagé à l'intérieur du noyau magnétique formant capuchon. Un espace d'une distance prédéfinie est ménagé entre la colonne centrale du noyau magnétique en T et le fond de l'évidement du noyau magnétique formant capuchon de manière à former un entrefer. Les pièces d'assemblage matérielles sont fixées sur le noyau magnétique formant capuchon et établissent une connexion électrique avec le bobinage conducteur. Le noyau magnétique formant capuchon et le noyau magnétique en T sont fixés par un liant remplissant au moins une zone inférieure de l'évidement réalisé à l'intérieur du noyau magnétique formant capuchon, et le liant remplissant la zone inférieure de l'évidement réalisé à l'intérieur du noyau magnétique formant capuchon comble l'entrefer. L'invention concerne également le procédé de fabrication dudit inducteur de type assemblage. L'inducteur de type assemblage et son procédé de fabrication permettent ainsi de mettre en oeuvre une production automatisée par lots et de conserver une grande stabilité de performance.
PCT/CN2018/083646 2018-04-19 2018-04-19 Inducteur de type assemblage et son procédé de fabrication WO2018127252A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2018/083646 WO2018127252A2 (fr) 2018-04-19 2018-04-19 Inducteur de type assemblage et son procédé de fabrication
CN201880000301.0A CN108701531A (zh) 2018-04-19 2018-04-19 一种组装式电感及其制造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/083646 WO2018127252A2 (fr) 2018-04-19 2018-04-19 Inducteur de type assemblage et son procédé de fabrication

Publications (2)

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WO2018127252A2 true WO2018127252A2 (fr) 2018-07-12
WO2018127252A3 WO2018127252A3 (fr) 2019-02-14

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PCT/CN2018/083646 WO2018127252A2 (fr) 2018-04-19 2018-04-19 Inducteur de type assemblage et son procédé de fabrication

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CN (1) CN108701531A (fr)
WO (1) WO2018127252A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111430111A (zh) * 2020-05-09 2020-07-17 深圳威迈斯新能源股份有限公司 一种电感
CN111816406A (zh) * 2020-08-04 2020-10-23 深圳可立克科技股份有限公司 一种多线圈连绕电感

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
JPH11354344A (ja) * 1998-04-06 1999-12-24 Hitachi Ferrite Denshi Kk インダクタンス素子
CN101325122B (zh) * 2007-06-15 2013-06-26 库帕技术公司 微型屏蔽磁性部件
US20100253456A1 (en) * 2007-06-15 2010-10-07 Yipeng Yan Miniature shielded magnetic component and methods of manufacture
JP2010212271A (ja) * 2009-03-06 2010-09-24 Fdk Corp 低背型インダクタ
JP6237268B2 (ja) * 2014-01-28 2017-11-29 Tdk株式会社 リアクトル
CN104616878B (zh) * 2014-12-30 2019-01-08 深圳顺络电子股份有限公司 一种微型模压电感元件及其制造方法
JP2016157751A (ja) * 2015-02-23 2016-09-01 スミダコーポレーション株式会社 電子部品
CN204834241U (zh) * 2015-06-26 2015-12-02 深圳市高斯博电子科技有限公司 一种共模电感器
TW201735065A (zh) * 2016-03-31 2017-10-01 全漢企業股份有限公司 磁性元件

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111430111A (zh) * 2020-05-09 2020-07-17 深圳威迈斯新能源股份有限公司 一种电感
CN111816406A (zh) * 2020-08-04 2020-10-23 深圳可立克科技股份有限公司 一种多线圈连绕电感

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Publication number Publication date
CN108701531A (zh) 2018-10-23
WO2018127252A3 (fr) 2019-02-14

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