WO2023026890A1 - フェライトシート並びにそれを用いたアンテナ装置及び非接触給電装置 - Google Patents

フェライトシート並びにそれを用いたアンテナ装置及び非接触給電装置 Download PDF

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Publication number
WO2023026890A1
WO2023026890A1 PCT/JP2022/030879 JP2022030879W WO2023026890A1 WO 2023026890 A1 WO2023026890 A1 WO 2023026890A1 JP 2022030879 W JP2022030879 W JP 2022030879W WO 2023026890 A1 WO2023026890 A1 WO 2023026890A1
Authority
WO
WIPO (PCT)
Prior art keywords
ferrite
ferrite sheet
sheet
groove
sintered plate
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/JP2022/030879
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
誠司 大前
哲也 木村
昭博 大橋
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.)
Toda Kogyo Corp
Original Assignee
Toda Kogyo Corp
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 Toda Kogyo Corp filed Critical Toda Kogyo Corp
Priority to US18/686,603 priority Critical patent/US20240243476A1/en
Priority to KR1020247009004A priority patent/KR20240043806A/ko
Priority to JP2023543819A priority patent/JPWO2023026890A1/ja
Priority to CN202280057914.4A priority patent/CN117859184A/zh
Priority to EP22861179.4A priority patent/EP4394813A4/en
Publication of WO2023026890A1 publication Critical patent/WO2023026890A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • 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
    • 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
    • H01F1/342—Oxides
    • H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • H01Q7/08—Ferrite rod or like elongated core
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling

Definitions

  • Patent Literature 1 proposes a ferrite sheet obtained by dividing a ferrite sintered body into individual pieces in advance to provide flexibility. Specifically, in Patent Document 1, a thin plate-shaped ferrite sintered body in which a plurality of lattice-shaped dividing grooves extending in the vertical and horizontal directions is formed on at least one of the front and back surfaces is used as a first coating layer and a second coating layer.
  • the ferrite sheet when the ferrite sheet is attached to an antenna base material having an antenna coil, it becomes difficult for the magnetic flux generated from the coil to collect in the ferrite sheet due to the gap that is generated. Communication characteristics may not be ensured.
  • unintended cracking may occur in the ferrite sintered plate, and depending on how the cracking occurs, an excessively large gap may occur between adjacent ferrite pieces. As a result, the continuity of the ferrite sintered plate is lost, the magnetic permeability of the ferrite sheet is lowered, and the communication characteristics of the antenna and the charging efficiency of the contactless power supply device may be lowered.
  • the groove extends to at least one-third in the thickness direction of the ferrite sintered plate.
  • the material of the base material 10 and the protective layer 40 is not particularly limited as long as it is a resin that can stretch without breaking when the ferrite sheet 1 is folded.
  • a resin material such as polyethylene terephthalate (PET) can be used. can be done.
  • PET polyethylene terephthalate
  • the base material 10 may be a laminate obtained by laminating another layer on a resin base material.
  • a composite magnetic sheet or the like obtained by mixing magnetic powder with resin may be laminated.
  • the resin component In order to prevent thermal deformation and cracking of the sheet, it is preferable to remove the resin component by raising the temperature from room temperature at a rate of about 10 to 20° C./hour and then maintaining a constant temperature. After that, it is preferable to raise the temperature at a rate of 30 to 60° C./hour, hold the temperature at a constant temperature, sufficiently sinter the material, grow the ferrite particles, and then gradually cool the material.
  • optimum conditions may be selected according to the number of ferrite molded sheets to be processed.
  • a ferrite sintered body is obtained by the above steps, and then the ferrite sintered body is divided by rollers or the like to form the ferrite sintered plates 30 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Soft Magnetic Materials (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Coils Or Transformers For Communication (AREA)
PCT/JP2022/030879 2021-08-26 2022-08-15 フェライトシート並びにそれを用いたアンテナ装置及び非接触給電装置 Ceased WO2023026890A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US18/686,603 US20240243476A1 (en) 2021-08-26 2022-08-15 Ferrite sheet, and antenna apparatus and non-contact power supply apparatus using same
KR1020247009004A KR20240043806A (ko) 2021-08-26 2022-08-15 페라이트 시트 및, 그것을 이용한 안테나 장치 및 비접촉 급전 장치
JP2023543819A JPWO2023026890A1 (https=) 2021-08-26 2022-08-15
CN202280057914.4A CN117859184A (zh) 2021-08-26 2022-08-15 铁氧体片以及使用其的天线装置和非接触供电装置
EP22861179.4A EP4394813A4 (en) 2021-08-26 2022-08-15 FERRITE SHEET, AND ANTENNA APPARATUS AND NON-CONTACT POWER SUPPLY APPARATUS USING SAME

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021138205 2021-08-26
JP2021-138205 2021-08-26

Publications (1)

Publication Number Publication Date
WO2023026890A1 true WO2023026890A1 (ja) 2023-03-02

Family

ID=85321929

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/030879 Ceased WO2023026890A1 (ja) 2021-08-26 2022-08-15 フェライトシート並びにそれを用いたアンテナ装置及び非接触給電装置

Country Status (7)

Country Link
US (1) US20240243476A1 (https=)
EP (1) EP4394813A4 (https=)
JP (1) JPWO2023026890A1 (https=)
KR (1) KR20240043806A (https=)
CN (1) CN117859184A (https=)
TW (1) TW202309939A (https=)
WO (1) WO2023026890A1 (https=)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005015293A (ja) * 2003-06-27 2005-01-20 Toda Kogyo Corp 焼結フェライト基板
WO2006129704A1 (ja) * 2005-06-03 2006-12-07 Murata Manufacturing Co., Ltd. フェライトシート及びその製造方法
JP2007123373A (ja) * 2005-10-26 2007-05-17 Tdk Corp ノイズ対策用複合磁性シート積層体及びその装着方法
JP2008124197A (ja) 2006-11-10 2008-05-29 Kitagawa Ind Co Ltd 複合磁性部材
JP2009113370A (ja) 2007-11-07 2009-05-28 Kitagawa Ind Co Ltd セラミックシート
JP2016076645A (ja) * 2014-10-08 2016-05-12 Tdk株式会社 平面コイル
WO2018155162A1 (ja) * 2017-02-23 2018-08-30 株式会社村田製作所 シールド板付き電子部品及び電子部品用シールド板
JP2020083731A (ja) * 2018-11-30 2020-06-04 パナソニックＩｐマネジメント株式会社 フェライトシート及びそれを用いたコイルモジュール

Family Cites Families (13)

* Cited by examiner, † Cited by third party
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DK2060076T3 (da) * 2006-08-21 2011-06-27 Interdigital Tech Corp Fremgangsmåde og apparat til at forhindre transmissionsblokering i et trådløst HSUPA-kommunikationssystem
JP5023377B2 (ja) * 2007-05-30 2012-09-12 北川工業株式会社 セラミックシート
JP5070353B1 (ja) * 2011-04-08 2012-11-14 株式会社Ｍａｒｕｗａ フェライト複合シートとその製造方法及びそのようなフェライト複合シートに用いられる焼結フェライト小片
US9640304B2 (en) * 2012-07-12 2017-05-02 Skc Co., Ltd. Ceramic laminate sheet with flexibility and preparation method thereof
KR20140040460A (ko) * 2012-09-26 2014-04-03 삼성전기주식회사 자성 기판 및 자성 기판 제조 방법
KR20140062730A (ko) * 2012-11-15 2014-05-26 삼성전기주식회사 자성시트 및 이의 제조방법
JP6127959B2 (ja) * 2013-12-20 2017-05-17 Tdk株式会社 フェライト組成物、フェライトプレート、アンテナ素子用部材、およびアンテナ素子
KR101762778B1 (ko) * 2014-03-04 2017-07-28 엘지이노텍 주식회사 무선 충전 및 통신 기판 그리고 무선 충전 및 통신 장치
US10931152B2 (en) * 2015-07-20 2021-02-23 Amosense Co., Ltd. Method of manufacturing magnetic field shielding sheet and magnetic field shielding sheet formed thereby
KR20170093029A (ko) * 2016-02-04 2017-08-14 주식회사 아모센스 무선전력 전송모듈용 차폐유닛 및 이를 구비한 무선전력 전송모듈
US10578049B2 (en) * 2017-04-28 2020-03-03 Mahle International Gmbh Thermal barrier coating for engine combustion component
US11192184B2 (en) * 2019-06-20 2021-12-07 Southwest Research Institute Engineered platelets for additive manufacturing
FR3119252B1 (fr) * 2021-01-26 2023-01-06 Commissariat A L’Energie Atomique Et Aux Energies Alternatives Dispositif de protection et de supervision d’un système électronique comprenant au moins un composant électronique. Procédé associé de protection et de supervision de l’intégrité du système électronique et du dispositif, et de brouillage d’attaques.

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005015293A (ja) * 2003-06-27 2005-01-20 Toda Kogyo Corp 焼結フェライト基板
WO2006129704A1 (ja) * 2005-06-03 2006-12-07 Murata Manufacturing Co., Ltd. フェライトシート及びその製造方法
JP2007123373A (ja) * 2005-10-26 2007-05-17 Tdk Corp ノイズ対策用複合磁性シート積層体及びその装着方法
JP2008124197A (ja) 2006-11-10 2008-05-29 Kitagawa Ind Co Ltd 複合磁性部材
JP2009113370A (ja) 2007-11-07 2009-05-28 Kitagawa Ind Co Ltd セラミックシート
JP2016076645A (ja) * 2014-10-08 2016-05-12 Tdk株式会社 平面コイル
WO2018155162A1 (ja) * 2017-02-23 2018-08-30 株式会社村田製作所 シールド板付き電子部品及び電子部品用シールド板
JP2020083731A (ja) * 2018-11-30 2020-06-04 パナソニックＩｐマネジメント株式会社 フェライトシート及びそれを用いたコイルモジュール

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Title
See also references of EP4394813A4

Also Published As

Publication number Publication date
TW202309939A (zh) 2023-03-01
CN117859184A (zh) 2024-04-09
EP4394813A4 (en) 2025-08-27
JPWO2023026890A1 (https=) 2023-03-02
EP4394813A1 (en) 2024-07-03
KR20240043806A (ko) 2024-04-03
US20240243476A1 (en) 2024-07-18

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