EP0986073A4 - Separation type transformer core - Google Patents

Separation type transformer core

Info

Publication number
EP0986073A4
EP0986073A4 EP99912044A EP99912044A EP0986073A4 EP 0986073 A4 EP0986073 A4 EP 0986073A4 EP 99912044 A EP99912044 A EP 99912044A EP 99912044 A EP99912044 A EP 99912044A EP 0986073 A4 EP0986073 A4 EP 0986073A4
Authority
EP
European Patent Office
Prior art keywords
type transformer
separation type
transformer core
soft magnetic
core
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.)
Granted
Application number
EP99912044A
Other languages
German (de)
French (fr)
Other versions
EP0986073A1 (en
EP0986073B1 (en
Inventor
Dongzhi Jin
Fumihiko Abe
Hajime Mochizuki
Hideharu Yonehara
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.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
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 Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Publication of EP0986073A1 publication Critical patent/EP0986073A1/en
Publication of EP0986073A4 publication Critical patent/EP0986073A4/en
Application granted granted Critical
Publication of EP0986073B1 publication Critical patent/EP0986073B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/18—Rotary transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/20—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/22—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H01F1/24—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
    • H01F1/26—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated by macromolecular organic substances
    • 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
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • H01F1/14791—Fe-Si-Al based alloys, e.g. Sendust
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
    • H01F1/36—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles
    • H01F1/37—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites in the form of particles in a bonding agent
    • 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
    • H01F2017/048—Fixed inductances of the signal type  with magnetic core with encapsulating core, e.g. made of resin and magnetic powder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
    • H01F19/08—Transformers having magnetic bias, e.g. for handling pulses
    • H01F2019/085—Transformer for galvanic isolation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/14—Inductive couplings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Insulating Of Coils (AREA)

Abstract

A separation type transformer core (1) having a coil (3) and a core material (2), wherein the core material (2) includes an insulating material having an electric insulating property and a mixed soft magnetic material having a soft magnetic material, the content of the soft magnetic material being not less than 10 vol.% and not more than 70 vol.%.
EP99912044A 1998-03-27 1999-03-26 Separation type transformer core Expired - Lifetime EP0986073B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8165198 1998-03-27
JP8165198 1998-03-27
PCT/JP1999/001567 WO1999050858A1 (en) 1998-03-27 1999-03-26 Separation type transformer core

Publications (3)

Publication Number Publication Date
EP0986073A1 EP0986073A1 (en) 2000-03-15
EP0986073A4 true EP0986073A4 (en) 2006-09-20
EP0986073B1 EP0986073B1 (en) 2011-02-09

Family

ID=13752243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99912044A Expired - Lifetime EP0986073B1 (en) 1998-03-27 1999-03-26 Separation type transformer core

Country Status (6)

Country Link
EP (1) EP0986073B1 (en)
JP (1) JP4278719B2 (en)
KR (1) KR100533494B1 (en)
CA (1) CA2291104C (en)
DE (1) DE69943179D1 (en)
WO (1) WO1999050858A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2373434C (en) * 2000-03-08 2008-05-06 The Furukawa Electric Co., Ltd Abnormality diagnosis method and apparatus for separable transformer
FR2976152B1 (en) * 2011-05-31 2013-06-28 Renault Sa MAGNETIC SHIELDING SCREEN FOR NON-CONTACT LOADING OF A BATTERY OF A MOTOR VEHICLE
JPWO2015064694A1 (en) * 2013-11-01 2017-03-09 戸田工業株式会社 Soft magnetic ferrite resin composition, soft magnetic ferrite resin composition molded body, and power transmission device for non-contact power feeding system
KR102166881B1 (en) 2014-04-03 2020-10-16 엘지이노텍 주식회사 Wireless power transmitting apparatus
WO2015173196A1 (en) * 2014-05-14 2015-11-19 Dsm Ip Assets B.V. Soft magnetic material composition and component made from the material
KR102283168B1 (en) * 2014-11-17 2021-07-29 엘지이노텍 주식회사 Soft magnetic alloy, wireless power transmitting apparatus and wireless power receiving apparatus comprising the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320080A (en) * 1978-03-22 1982-03-16 Robert Bosch Gmbh Method to manufacture soft magnetic pressed bodies
US4543208A (en) * 1982-12-27 1985-09-24 Tokyo Shibaura Denki Kabushiki Kaisha Magnetic core and method of producing the same
JPS62188303A (en) * 1986-02-14 1987-08-17 Shigeo Fukuda Manufacture of magnetic core of rotary transformer in video tape recorder
US5160447A (en) * 1988-02-29 1992-11-03 Kabushiki Kaisha Sankyo Seiki Seisakusho Compressed powder magnetic core and method for fabricating same
EP0587142A2 (en) * 1992-09-09 1994-03-16 Matsushita Electric Industrial Co., Ltd. A rotary transformer

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5926214U (en) * 1982-08-11 1984-02-18 クラリオン株式会社 rotary transformer
JPH07307237A (en) * 1994-05-13 1995-11-21 Tokin Corp Manufacture of rotary transformer and magnetic material used for the manufacture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320080A (en) * 1978-03-22 1982-03-16 Robert Bosch Gmbh Method to manufacture soft magnetic pressed bodies
US4543208A (en) * 1982-12-27 1985-09-24 Tokyo Shibaura Denki Kabushiki Kaisha Magnetic core and method of producing the same
JPS62188303A (en) * 1986-02-14 1987-08-17 Shigeo Fukuda Manufacture of magnetic core of rotary transformer in video tape recorder
US5160447A (en) * 1988-02-29 1992-11-03 Kabushiki Kaisha Sankyo Seiki Seisakusho Compressed powder magnetic core and method for fabricating same
EP0587142A2 (en) * 1992-09-09 1994-03-16 Matsushita Electric Industrial Co., Ltd. A rotary transformer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 012, no. 035 (E - 579) 2 February 1988 (1988-02-02) *
See also references of WO9950858A1 *

Also Published As

Publication number Publication date
KR20010012948A (en) 2001-02-26
JP4278719B2 (en) 2009-06-17
CA2291104C (en) 2010-11-30
WO1999050858A1 (en) 1999-10-07
EP0986073A1 (en) 2000-03-15
WO1999050858A8 (en) 1999-12-02
KR100533494B1 (en) 2005-12-06
DE69943179D1 (en) 2011-03-24
CA2291104A1 (en) 1999-10-07
EP0986073B1 (en) 2011-02-09

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