Title:
COIL DEVICE AND POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/168857
Kind Code:
A1
Abstract:
A transformer (100) is provided with a core group (101, 102) and a winding group (103). Each of a plurality of winding layers (103a to 103c) extends through a plurality of closed magnetic paths composed of a plurality of cores (101a to 101g, 102a to 102g). In a top plan view, the plurality of cores (101a to 101g, 102a to 102g) are arranged at intervals along electrically conductive wires through which electric current of the plurality of winding layers (103a to 103c) flows, and the plurality of winding layers (103a to 103c) are arranged at intervals from the inside to the outside along a direction intersecting the electric current direction. Thus, it is possible to provide a high-efficiency and low-cost coil device having good heat dissipation and reduced size.
Inventors:
KUMAGAI TAKASHI (JP)
FUKUI KAZUAKI (JP)
YAMAMOTO YOSHIAKI (JP)
TANAKA KAZUFUMI (JP)
ASAI KENJI (JP)
OHASHI KAZUYA (JP)
ISHIHARA KOJI (JP)
FUKUI KAZUAKI (JP)
YAMAMOTO YOSHIAKI (JP)
TANAKA KAZUFUMI (JP)
ASAI KENJI (JP)
OHASHI KAZUYA (JP)
ISHIHARA KOJI (JP)
Application Number:
PCT/JP2022/004015
Publication Date:
August 11, 2022
Filing Date:
February 02, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NUNOME ELECTRIC CO LTD (JP)
NUNOME ELECTRIC CO LTD (JP)
International Classes:
H01F30/10; H01F27/24; H01F27/28
Foreign References:
| JP2015535657A | 2015-12-14 | |||
| JPS5940512A | 1984-03-06 | |||
| JP2011138931A | 2011-07-14 | |||
| JPS59193011A | 1984-11-01 | |||
| JPS57140720U | 1982-09-03 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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