Title:
CORE PIECE, REACTOR, CONVERTER, AND POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/209760
Kind Code:
A1
Abstract:
This core piece is formed from a molded body of a composite material in which soft magnetic powder is dispersed in a resin, the core piece comprising a middle core portion disposed inside a coil, and an end core portion facing an end surface of the coil, wherein: the middle core portion has a hole or a groove extending in an axial direction of the coil; the radius of a first inscribed circle in a horizontal cross section of the middle core portion is 0.6 times or less of the radius of a reference inscribed circle; the horizontal cross section is a cross section obtained by cutting the middle core portion so as to pass through the hole or the groove at a plane orthogonal to the axial direction of the coil; the first inscribed circle is the largest inscribed circle in a contour line of the hole or the groove in the horizontal cross section and an outer peripheral contour line of the middle core portion in the horizontal cross section; the reference inscribed circuit is the largest inscribed circle in a first virtual external shape; and the first virtual external shape is the smallest square circumscribed to the horizontal cross section.
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Inventors:
YAMAMOTO SHINICHIRO (JP)
KUSAWAKE KAZUSHI (JP)
KUSAWAKE KAZUSHI (JP)
Application Number:
PCT/JP2022/010881
Publication Date:
October 06, 2022
Filing Date:
March 11, 2022
Export Citation:
Assignee:
AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
H01F37/00; H01F27/24
Foreign References:
| JP2020092117A | 2020-06-11 | |||
| JP2018142624A | 2018-09-13 |
Attorney, Agent or Firm:
YAMANO Hiroshi et al. (JP)
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