Global Patent Index - EP 4279630 A2

EP 4279630 A2 20231122 - METHOD FOR MAKING A STRUCTURED MAGNETIC MATERIAL WITH INTEGRATED PARTICLE INSULATION

Title (en)

METHOD FOR MAKING A STRUCTURED MAGNETIC MATERIAL WITH INTEGRATED PARTICLE INSULATION

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES STRUKTURIERTEN MAGNETISCHEN MATERIALS MIT INTEGRIERTER PARTIKELISOLIERUNG

Title (fr)

PROCÉDÉ DE FABRICATION D'UN MATÉRIAU MAGNÉTIQUE STRUCTURÉ AVEC ISOLATION DE PARTICULES INTÉGRÉE

Publication

EP 4279630 A2 20231122 (EN)

Application

EP 23200660 A 20140305

Priority

  • US 201313836615 A 20130315
  • EP 20203613 A 20140305
  • EP 14769666 A 20140305
  • US 2014020736 W 20140305

Abstract (en)

A system for forming a soft magnetic bulk material of a motor stator from a magnetic material and a source of insulating material, the system comprising: a support; a heating device; a deposition device; and an indexing mask subsystem. The support is configured to support the soft magnetic bulk material of the motor stator. The heating device is for heating the magnetic material to form particles having a softened state. The deposition device is for depositing successive layers of particles of the magnetic material in the softened state on the support. The indexing mask subsystem is configured as a first negative of an inner shape of the motor stator and a second negative of an outer shape of the motor stator. The indexing mask subsystem is located between the deposition device and the support and indexed relative to the support upon deposition of the successive layers to selectively block the successive layers of particles of the magnetic material in the softened state from being deposited on the support, thus forming the soft magnetic bulk material of the motor stator as the inner shape of the motor stator and the outer shape of the motor stator on the support. The soft magnetic bulk material has a plurality of adhered domains of magnetic material, wherein substantially all of the domains of magnetic material are separated by a predetermined layer of high resistivity insulating material.

IPC 8 full level

C23C 4/123 (2016.01)

CPC (source: EP)

B05B 1/083 (2013.01); B05B 7/224 (2013.01); C23C 4/01 (2016.01); C23C 4/08 (2013.01); C23C 4/131 (2016.01); C23C 24/04 (2013.01); H01F 1/24 (2013.01); H01F 41/0246 (2013.01)

Citation (applicant)

  • US 5266098 A 19931130 - CHUN JUNG-HOON [US], et al
  • JANSSON, P.: "Advances in Soft Magnetic Composites Based on Iron Powder", SOFT MAGNETIC MATERIALS, no. 7, April 1998 (1998-04-01)
  • UOZUMI, G. ET AL.: "Properties of Soft Magnetic Composite With Evaporated MgO Insulation Coating for Low Iron Loss", MATERIALS SCIENCE FORUM, vol. 534-536, 2007, pages 1361 - 1364
  • JACK, A. G.MECROW, B.C.MADDISON, C.P.: "Combined Radial and Axial Permanent Magnet Motors Using Soft Magnetic Composites", NINTH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND DRIVES, CONFERENCE PUBLICATION, no. 468, 1999
  • JACK, A.G. ET AL.: "Permanent-Magnet Machines with Powdered Iron Cores and Prepressed Windings", IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol. 36, no. 4, July 2000 (2000-07-01), pages 1077 - 1084, XP001099911, DOI: 10.1109/28.855963
  • HUR, J. ET AL.: "Development of High-Efficiency 42V Cooling Fan Motor for Hybrid Electric Vehicle Applications", IEEE VEHICLE POWER AN PROPULSION CONFERENCE, September 2006 (2006-09-01)
  • CVETKOVSKI, G.PETKOVSKA, L.: "Performance Improvement of PM Synchronous Motor by Using Soft Magnetic Composite Material", IEEE TRANSACTIONS ON MAGNETICS, vol. 44, no. 11, November 2008 (2008-11-01), pages 3812 - 3815, XP011240125, DOI: 10.1109/TMAG.2008.2001314
  • UOZUMI, G. ET AL.: "Properties of Soft Magnetic Composite with Evaporated MgO Insulation Coating for Low Iron Loss", MATERIALS SCIENCE FORUM, vol. 534-536, 2007, pages 1361 - 1364
  • CHUN, J.-H.PASSOW, C.H., PRODUCTION OF CHARGED UNIFORMLY SIZED METAL DROPLETS
  • ROY, S.ANDO T.: "Nucleation Kinetics and Microstructure Evolution of Traveling ASTM F75 Droplets", ADVANCED ENGINEERING MATERIALS, vol. 12, no. 9, September 2010 (2010-09-01), pages 912 - 919, XP072135469, DOI: 10.1002/adem.201000136

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2014149761 A2 20140925; WO 2014149761 A3 20141231; EP 2969315 A2 20160120; EP 2969315 A4 20170419; EP 2969315 B1 20201202; EP 3792944 A1 20210317; EP 3792944 B1 20231108; EP 4279630 A2 20231122; EP 4279630 A3 20240313; JP 2016516896 A 20160609; JP 6173554 B2 20170802

DOCDB simple family (application)

US 2014020736 W 20140305; EP 14769666 A 20140305; EP 20203613 A 20140305; EP 23200660 A 20140305; JP 2016500661 A 20140305