Magnetic device including winding and insulators, and power conversion device using the same

Patent metadata

Field	Value
Publication number	US-2016365804-A1
Application number	US-201615173700-A
Country	US
Kind code	A1
Filing date	Jun 5, 2016
Priority date	Jun 12, 2015
Publication date	Dec 15, 2016
Grant date	—

Abstract

A magnetic device includes a winding, and insulators by which the winding is surrounded. Each of the insulators is in contact with the winding. A gap exists between each two adjacent of the insulators in a winding direction of the winding.

First claim

What is claimed is:

1 . A magnetic device comprising:
a winding; and insulators by which the winding is surrounded, each of the insulators being in contact with the winding, a gap existing between each two adjacent of the insulators in a winding direction of the winding.

2 . The magnetic device according to claim 1 ,
wherein the insulators include a first insulator and a second insulator.

3 . The magnetic device according to claim 2 ,
wherein the insulators further include a third insulator.

4 . The magnetic device according to claim 1 ,
wherein the winding includes a pair of linear portions that extend in a linear direction when viewed from a winding axis direction of the winding, a length of each of the pair of linear portions is longer than ¼ of a length of one turn of the winding, and two of the insulators are in contact with the winding along the linear direction.

5 . The magnetic device according to claim 2 ,
wherein the winding includes a first portion that extends in a first direction when viewed from a winding axis direction of the winding, and a second portion that extends in a second direction and is shorter than the first portion, and the gap between one end of the first insulator and one end of the second insulator is located beside the second portion.

6 . The magnetic device according to claim 2 ,
wherein the winding has a corner when viewed from a winding axis direction of the winding, and the gap between one end of the first insulator and one end of the second insulator is located beside the corner.

7 . The magnetic device according to claim 2 ,
wherein one end of the first insulator and one end of the second insulator oppose each other through the gap, and the one end of the first insulator and the one end of the second insulator each have a stepped end face.

8 . The magnetic device according to claim 2 ,
wherein one end of the first insulator and one end of the second insulator oppose each other through the gap, the one end of the first insulator has a recess, and the one end of the second insulator has a protrusion that engages with the recess of the first insulator.

9 . The magnetic device according to claim 1 , further comprising:
another winding outside of the winding, the insulators being bobbins around which the other winding is wound.

10 . The magnetic device according to claim 1 ,
wherein the gap is larger than 0 mm and equal to or less than 3 mm.

11 . A power conversion device comprising:
the magnetic device according to claim 1 ; and a power conversion circuit that is connected to the winding.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Nakagawa Yoshitake
• Yamakawa Takehiko
• Fujimura Motohiko
• Kato Akira
• Sakiyama Kazuyuki

Classifications

• H01F27/306

  Fastening or mounting coils or windings on core, casing or other support · CPC title

• H01F27/2876 Primary

  Cooling (cooling transformers and inductances in general H01F27/08) · CPC title

• H01F27/325

  Coil bobbins (formers for coils in general H01F5/02) · CPC title

• H01F2005/025

  wound on coaxial arrangement of two or more formers · CPC title

• H02M3/33523

  with galvanic isolation between input and output of both the power stage and the feedback loop · CPC title