Inductor

Patent metadata

Field	Value
Publication number	US-10930419-B2
Application number	US-201616309544-A
Country	US
Kind code	B2
Filing date	Jun 21, 2016
Priority date	Jun 21, 2016
Publication date	Feb 23, 2021
Grant date	Feb 23, 2021

Abstract

An inductor includes a substrate as a base material, a core portion, a coil portion, an insulating portion formed between conductors of the coil portion, and a terminal portion connecting the core portion and the coil portion to the outside. A main direction of a magnetic field that is generated in accordance with current flowing through the coil portion extends in a planar direction of the substrate. In at least a portion of the coil portion, both width and thickness of a rectangular cross-sectional area of the coil portion are larger than the width of the insulating portion.

First claim

The invention claimed is:

1. An inductor using a substrate as a base material, the inductor comprising:
a core portion;
a coil portion;
an insulating portion formed between conductors of the coil portion; and
a terminal portion connecting the core portion and the coil portion to outside of the inductor;
a main direction of a magnetic field being generated in accordance with a current flowing through the coil portion extends in a planar direction of the substrate, and
in at least a portion of the coil portion, both a width and a thickness of a rectangular cross-sectional area of the coil portion are larger than a width of the insulating portion, the main direction of the planar direction being a direction of the width of the rectangular cross-sectional area of the coil portion and the width of the insulating portion.

2. The inductor according to claim 1 , wherein
both the width and the thickness of the rectangular cross-sectional area of the coil portion are larger than the width of the insulating portion in all regions of the coil portion.

3. The inductor according to claim 1 , wherein
the width of the rectangular cross-sectional area of the coil portion is larger than the thickness of the rectangular cross-sectional area of the coil portion.

4. The inductor according to claim 1 , wherein
a plurality of the coil portions are provided,
the plurality of the coil portions are formed side by side in a planar direction of the substrate, and
a magnetic flux is generated in accordance with the current flowing through the plurality of the coil portions are coupled in series inside of the plurality of coil portions.

5. The inductor according to claim 1 , wherein
a plurality of the coil portions are provided having different main directions, and
a magnetic flux is generated in accordance with the current flowing through the plurality of the coil portions that are coupled in series between the plurality of the coil portions.

6. The inductor according to claim 1 , further comprising
at least one outer layer coil portion disposed on an outer layer of the coil portion via the insulating portion, and
the main direction of the magnetic field that is generated in accordance with the current that flows in the outer layer coil portion is the same as the main direction of the magnetic field that is generated in accordance with the current that flows in the coil portion.

7. The inductor according to claim 6 , wherein
the outer layer coil portion has conductors disposed on the outer layer of the insulating portion that is formed between the conductors of the coil portion.

8. The inductor according to claim 6 , wherein
the number of the conductors of the outer layer coil portion is less than the number of conductors of the coil portion.

9. The inductor according to claim 6 , wherein
the outer layer coil portion is connected in series with the coil portion.

10. The inductor according to claim 6 , wherein
a plurality of the coil portions are connected together in series,
a plurality of the outer layer coil portions are connected together in series, and
the plurality of the coil portions connected together in series and the plurality of the outer layer coil portions connected together in series are connected in parallel.

11. The inductor according to claim 5 , wherein
the core portion is disposed between at least one of the coil portions.

12. The inductor according to claim 1 , wherein
the width of the rectangular cross-sectional area of the coil portion increases with decreasing distance to a center of the substrate.

13. The inductor according to claim 1 , wherein
the base material is any one of silicon, ferrite, or glass epoxy.

Assignees

• Nissan Motor

Inventors

• Zushi Yusuke
• Hayashi Tetsuya
• Hayami Yasuaki
• Ni Wei
• Yamamoto Akimitsu

Classifications

• H01F5/06 Primary

  Insulation of windings · CPC title

• H01F27/28 Primary

  Coils; Windings; Conductive connections · CPC title

• H01F27/323

  Insulation between winding turns, between winding layers · CPC title

• H01F27/29

  Terminals; Tapping arrangements {for signal inductances} · CPC title

• H01F17/06 Primary

  with core substantially closed in itself, e.g. toroid · CPC title