WO2023013129A1 - コア及びコアの生産方法 - Google Patents

コア及びコアの生産方法 Download PDF

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Publication number
WO2023013129A1
WO2023013129A1 PCT/JP2022/009836 JP2022009836W WO2023013129A1 WO 2023013129 A1 WO2023013129 A1 WO 2023013129A1 JP 2022009836 W JP2022009836 W JP 2022009836W WO 2023013129 A1 WO2023013129 A1 WO 2023013129A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
linear material
shape
producing
linear
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/JP2022/009836
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
勇治 関冨
重利 山下
栄吉 吉田
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.)
Matsuo Industries Inc
Original Assignee
Matsuo Industries Inc
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 Matsuo Industries Inc filed Critical Matsuo Industries Inc
Priority to US18/579,229 priority Critical patent/US20240347269A1/en
Priority to EP22852558.0A priority patent/EP4383284A4/en
Priority to CN202280050437.9A priority patent/CN117652006A/zh
Priority to JP2023539622A priority patent/JPWO2023013129A1/ja
Publication of WO2023013129A1 publication Critical patent/WO2023013129A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/06—Cores, Yokes, or armatures made from wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • 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
    • H01F2027/348—Preventing eddy currents

Definitions

  • the disclosed technology relates to cores and core production methods.
  • Cores are parts used in motors, magnetic circuits, magnetic sensors, etc., and are used in various industries.
  • the core also called an iron core, functions as a path for magnetic flux.
  • the technology disclosed herein aims to provide a production method for cores that can be designed into various shapes.
  • a method of producing a core according to the present disclosure is a method of producing a core that is used by arranging a plurality of cores in a ring, wherein a linear material that is a magnetic material is bent, formed into a design shape, and an excess of the linear material is formed. cutting off the excess if any.
  • the core production method according to the disclosed technique includes the above steps, the core can be designed in various shapes.
  • FIG. 1 is a flowchart showing processing steps of a core production method according to Embodiment 1.
  • FIG. 2 is a schematic diagram showing an example of the shape of the core according to Embodiment 1.
  • FIG. 3 is a schematic diagram showing an example of a design shape according to Embodiment 1.
  • FIG. 4A is a schematic diagram 1 showing an example of forming the linear material 1 into a designed shape.
  • FIG. 4B is a second schematic diagram showing an example of forming the linear material 1 into a designed shape.
  • FIG. 4C is a schematic diagram 3 showing an example of forming the linear material 1 into a designed shape.
  • FIG. 5 is a schematic diagram showing an example of forming linear materials 1 arranged in a plane into a designed shape.
  • FIG. 6 is a schematic diagram showing an example of forming a three-dimensionally bundled linear material 1 into a designed shape.
  • FIG. 7A is an example of a graph comparing the output voltages of a rotating device according to a conventional technology and a rotating device according to the technology of the present disclosure.
  • FIG. 7B is an example of a graph comparing the impedances of the rotary device according to the conventional technology and the rotary device according to the technology of the present disclosure.
  • FIG. 8 is a diagram for explaining the wire drawing process in the core production method according to the second embodiment.
  • FIG. 9 is an explanatory diagram showing changes in the cross-sectional shape of the linear material 1 before and after the wire drawing process in the core production method according to the second embodiment.
  • FIG. 1 is a flow chart showing processing steps of a core 2 production method according to the first embodiment.
  • the method for producing the core 2 according to Embodiment 1 comprises a step (ST2) of bending the linear material 1, which is a magnetic material, a step (ST4) of forming it into a designed shape, and a step (ST4) of forming the linear material and a step (ST6) of cutting off the excess of 1.
  • the linear material 1, which is a magnetic material, may contain silicon by CVD (Chemical Vapor Deposition).
  • FIG. 2 is a schematic diagram showing an example of the shape of the core 2 according to Embodiment 1.
  • FIG. FIG. 2 illustrates a case where the cross-sectional shape of the linear material 1 is square.
  • the core 2 since the core 2 is formed by stacking the linear materials 1, it can be adapted to various shapes, and can be applied to rotating equipment such as high-output motors.
  • FIG. 3 is a schematic diagram showing an example of the design shape according to Embodiment 1.
  • FIG. The shape shown on the left side of FIG. 3 is the designed shape.
  • FIG. 3 shows an example in which two cores 2 face each other and are joined together in an annular shape.
  • a design shape is a shape that includes the shape of at least one core 2 .
  • the right side of FIG. 3 shows an example in which two cores 2 are produced by cutting a linear material 1 bent into a design shape into two.
  • the design shape shown in FIG. 3 is annular, the method of manufacturing the core 2 according to the disclosed technique is not limited to this.
  • the design shape may be a plurality of cores 2 connected in series.
  • the design shape includes the shapes of a plurality of cores 2, it is preferable that there is a so-called cutting margin (white space) between the cores 2 adjacent to each other.
  • the linear material 1 is preferably stacked in the direction of the magnetic flux of the magnetic circuit in which the core 2 is incorporated.
  • the bent linear material 1 In order for the bent linear material 1 to maintain its design shape, it is preferable that the bent linear material 1 be subjected to a treatment process for maintaining its shape.
  • the processing steps for maintaining the shape may include thermocompression bonding such as self-bonding by heating, bonding with an adhesive, twisting a plurality of strands together, and pressure bonding by applying pressure.
  • the linear material 1 When self-bonding is used for the treatment process for maintaining the shape, it is preferable to use a wire coated with enamel or the like as the linear material 1 . That is, in the case of self-bonding, the linear material 1 is preferably coated with a material for self-bonding.
  • the step (ST6) of cutting the excess of the linear material 1 can also be said to be a step of cutting out the core shape on the right side of FIG. 3 from the design shape on the left side of FIG. 3, for example.
  • cutting the excess is also included.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
PCT/JP2022/009836 2021-08-06 2022-03-08 コア及びコアの生産方法 Ceased WO2023013129A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US18/579,229 US20240347269A1 (en) 2021-08-06 2022-03-08 Core and method for producing core
EP22852558.0A EP4383284A4 (en) 2021-08-06 2022-03-08 CORE AND METHOD FOR PRODUCING CORE
CN202280050437.9A CN117652006A (zh) 2021-08-06 2022-03-08 铁芯和铁芯的生产方法
JP2023539622A JPWO2023013129A1 (enExample) 2021-08-06 2022-03-08

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-130281 2021-08-06
JP2021130281 2021-08-06

Publications (1)

Publication Number Publication Date
WO2023013129A1 true WO2023013129A1 (ja) 2023-02-09

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ID=85155497

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/009836 Ceased WO2023013129A1 (ja) 2021-08-06 2022-03-08 コア及びコアの生産方法

Country Status (5)

Country Link
US (1) US20240347269A1 (enExample)
EP (1) EP4383284A4 (enExample)
JP (1) JPWO2023013129A1 (enExample)
CN (1) CN117652006A (enExample)
WO (1) WO2023013129A1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025096525A1 (en) * 2023-10-31 2025-05-08 Murata Manufacturing Co., Ltd. Inductor, made from bundled fibers, and components, systems and methods
DE102024106870A1 (de) * 2024-03-11 2025-09-11 Rolls-Royce Deutschland Ltd & Co Kg Magnetkern für eine elektrische Maschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3614311Y1 (enExample) * 1959-03-27 1961-06-02
JP2006060053A (ja) * 2004-08-20 2006-03-02 Yasuhiko Okubo 鉄心
JP2008072070A (ja) * 2006-09-11 2008-03-27 Masashi Otsubo 小形電源トランス
JP2011239645A (ja) 2010-05-13 2011-11-24 Toyota Motor Corp 可変リラクタンス型レゾルバおよびその製造方法
JP2018148119A (ja) 2017-03-08 2018-09-20 株式会社神戸製鋼所 イグニッションコイル用鉄心及びイグニッションコイル用鉄心の製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009442A1 (en) * 1989-12-20 1991-06-27 Benford Susan M Magnetic flux return path for an electrical device
EP1840908A1 (en) * 2006-03-30 2007-10-03 NV Bekaert SA Magnetic flux return path with collated bands of wire
WO2021031191A1 (zh) * 2019-08-22 2021-02-25 深圳市大疆创新科技有限公司 铁芯、电子器件及电子装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3614311Y1 (enExample) * 1959-03-27 1961-06-02
JP2006060053A (ja) * 2004-08-20 2006-03-02 Yasuhiko Okubo 鉄心
JP2008072070A (ja) * 2006-09-11 2008-03-27 Masashi Otsubo 小形電源トランス
JP2011239645A (ja) 2010-05-13 2011-11-24 Toyota Motor Corp 可変リラクタンス型レゾルバおよびその製造方法
JP2018148119A (ja) 2017-03-08 2018-09-20 株式会社神戸製鋼所 イグニッションコイル用鉄心及びイグニッションコイル用鉄心の製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4383284A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025096525A1 (en) * 2023-10-31 2025-05-08 Murata Manufacturing Co., Ltd. Inductor, made from bundled fibers, and components, systems and methods
DE102024106870A1 (de) * 2024-03-11 2025-09-11 Rolls-Royce Deutschland Ltd & Co Kg Magnetkern für eine elektrische Maschine

Also Published As

Publication number Publication date
EP4383284A4 (en) 2025-08-27
JPWO2023013129A1 (enExample) 2023-02-09
EP4383284A1 (en) 2024-06-12
CN117652006A (zh) 2024-03-05
US20240347269A1 (en) 2024-10-17

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