Magnetic component

Patent metadata

Field	Value
Publication number	US-12148562-B2
Application number	US-201817252182-A
Country	US
Kind code	B2
Filing date	Jun 29, 2018
Priority date	Jun 29, 2018
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

A magnetic component has a primary coil 10 ; a secondary coil 20 disposed to face the primary coil 10 ; a core 500 which passes through the primary coil 10 and the secondary coil 20 ; and a coil sealing part 50 which seals at least the primary coil 10 and the secondary coil 20 , and a part or whole of region between the primary coil 10 and the secondary coil 20 and the core 500.

First claim

The invention claimed is:

1. A magnetic component comprising:
a primary coil having a first coil and a second coil connected to the first coil;
a secondary coil disposed to face the primary coil;
a core comprising a middle leg and a pair of outer legs, wherein the middle leg is configured to pass through the primary coil and the secondary coil; and
a coil sealing part which seals at least the primary coil and the secondary coil, and a part or whole of region between the primary coil and the secondary coil and the core,
wherein an insulating sheet is provided between outer lateral side surfaces of the primary coil and the secondary coil, and an inner surface of outer leg of the core, the insulating sheet being in contact with the outer lateral side surfaces of the primary coil and the secondary coil, and the inner surface of outer leg of the core;
wherein upper surface of the core is covered by the coil sealing part and lower surface of the core is exposed from the coil sealing part, and
wherein the primary coil including the first coil and the second coil is provided entirely on lower side of the secondary coil.

2. The magnetic component according to claim 1 wherein an insulating sheet is provided between upper surface side of the primary coil or the secondary coil and the core, or between lower surface side of the primary coil or the secondary coil and the core.

3. The magnetic component according to claim 1 further comprising:
a primary-side electronic element connected to the primary coil;
a primary-side sealing part sealing the primary-side electronic element;
a secondary-side electronic element connected to the secondary coil; and
a secondary-side sealing part sealing the secondary-side electronic element, wherein
materials of the coil sealing part, the primary-side sealing part, and the secondary-side sealing part are identical.

4. The magnetic component according to claim 1 wherein the coil sealing part has a first sealing part which seals the primary coil and the secondary coil, and a second sealing part which seals at least a part of the core, and
a material for the first sealing part has a higher fluidity than a material for the second sealing part.

5. The magnetic component according to claim 1 wherein the coil sealing part has a first sealing part which seals the primary coil and the secondary coil, and a second sealing part which seals at least a part of the core, and
thermal conductivity of the second sealing part is higher than thermal conductivity of the first sealing part.

6. The magnetic component according to claim 1 further comprising:
a primary-side electronic element connected to the primary coil;
a primary-side sealing part sealing the primary-side electronic element;
a secondary-side electronic element connected to the secondary coil; and
a secondary-side sealing part sealing the secondary-side electronic element, wherein
the coil sealing part has a first sealing part which seals the primary coil and the secondary coil, and a second sealing part which seals at least a part of the core,
a material of the first sealing part and a material of the second sealing part are different, and
materials of the first sealing part, the primary-side sealing part and the secondary-side sealing part are identical, or materials of the second sealing part, the primary-side sealing part and the secondary-side sealing part are identical.

Assignees

• Shindengen Electric Mfg

Inventors

• Ikeda Kosuke
• Hiruma Yoshiaki

Classifications

• H01F30/10

  Single-phase transformers (H01F30/16 takes precedence) · CPC title

• H01F27/324

  Insulation between coil and core, between different winding sections, around the coil; Other insulation structures · CPC title

• H01F27/2847

  Sheets; Strips (H01F27/2866 takes precedence) · CPC title

• H01F27/22

  Cooling by heat conduction through solid or powdered fillings · CPC title

• H01F27/327

  Encapsulating or impregnating (encapsulating coil and core H01F27/022) · CPC title